Powersoft M28Q, M20D User's Guide

M Series ampliers

M30D / M30D HDSP+ETH

M20D / M20D HDSP+ETH

M14D / M14D HDSP+ETH

M50Q / M50Q HDSP+ETH

M28Q / M28Q HDSP+ETH

CLIP

6dB

-18dB

SIGNAL

8

-

+32

dB

READY

8

-

+32

dB

TEMP

powersoft_MSeries_uguide_en_v2.6

user guide

REV 1.1 August 2013

DO000100

Keep This Manual For Future Reference© 2012 - 2013 Powersoft

Table of contents

1 Important safety instructions 4

2 Precautions regarding installation 4

2.1 Location 4

2.2 Wiring 5

2.3 Speaker damage 5

3 Mechanical drawings 6

4 Interfaces 7

5 Welcome 9

6 The M Series 9

6.1 More sound and less weight 9

7 Installation 9

7.1 Unpacking 9

7.2 Mounting 10

7.3 Cooling 10

7.4 Operating precautions 10

7.5 Grounding 10

7.6 AC mains connection 10

8 Connections and Operation 10

8.1 Front panel air lters access 10

8.2 Front panel adjustments 11

8.3 Front panel monitoring 11

8.4 Connecting audio inputs 11

8.4.1 MxxD models 11

8.4.2 MxxQ models 11

8.5 Connecting audio outputs 11

8.5.1 Lo-Z and 70V/100V operations 11

8.5.2 Bridge Mode Connection 11

9 M Series HDSP+ETH operation 12

9.1 Rear Panel LEDs 12

9.2 Ethernet por t and remote ID selection 12

9.3 V Ext 12

9.4 DSP features and operations 12

9.4.1 DSP Features 12

9.4.2 Input routing selection and internal signal route 13

9.4.3 Input section 13

9.4.4 Output section 13

9.5 Internal processing layout 13

9.5.1 Input routing 13

9.5.2 Input section 13

9.5.3 Output section 13

9.6 Locking 14

9.7 On/Off 14

9.8 Preset Management 14

10 Remote control 14

10.1 Networking 14

10.1.1 Discovery device 14

10.1.2 DHCP 14

10.1.3 AUTOIP 15

10.1.4 Static IP 15

10.1.5 Rever t from static IP 15

10.2 Setup device 16

10.2.1 Virtual device 16

10.2.2 Congure layout 16

10.2.3 Real device 16

10.3 File operations 17

10.3.1 Binary preset le .preset 17

10.4 Input/output curves .icp, .ocp 17

10.5 Channel preset .chp 17

10.6 Device preset le .pam 18

10.7 System File .paw 18

10.8 DSP remote operations 18

10.8.1 Routing 18

10.8.2 Input eq 18

10.8.3 Output eq 19

2

M Series

User Guide

10.8.4 Limiters 19

10.8.5 RMS limiter 19

10.8.6 Peak limiter 19

10.8.7 Damping factor correction 19

10.9 Locking 20

10.10 On board preset operations 20

10.11 Copy and paste operations 21

10.12 Input/output eq curves 21

10.13 Channels 21

10.14 Workspace 21

11 Protection 21

11.1 Turn on/Turn off muting 21

11.2 Short circuit protection 21

11.3 Thermal protection 21

11.4 Thermal warning 22

11.5 Thermal shutdown 22

11.6 DC fault protection 22

11.7 Input/output protection 22

12 User Maintenance 22

12.1 Cleaning 22

12.2 Service 22

12.3 Dust Removal 22

18 Specications 25

M14D and M14D HDSP+ETH 25
M20D and M20D HDSP+ETH 26
M30D and M30D HDSP+ETH 27
M28Q and M28Q HDSP+ETH 28
M50Q and M50Q HDSP+ETH 29

Annex A: IP management and recovery 30

A.1.1 Reset IP conguration 30

13 Warranty 22

13.1 Product warranty 22

13.2 Return of Goods 22

13.3 Repair or replacement 22

13.4 Cost and responsibility of transport 22

14 Assistance 23

15 M Series power rating 24

16 Output SpeakON connection polarities 24

17 M Series load compatibility chart 24

3

1 Important safety instructions

!

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT ATTEMPT TO OPEN ANY PART OF THE UNIT. NO
USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO
QUALIFIED SERVICE PERSONNEL.

WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS APPARATUS TO RAIN OR
MOISTURE. OBJECTS FILLED WITH LIQUIDS, SUCH AS VAS­ES, SHOULD NOT BE PLACED ON THIS APPARATUS.

TO COMPLETELY DISCONNECT THIS APPARATUS FROM
THE AC MAINS, DISCONNECT THE POWER SUPPLY CORD
PLUG FROM THE AC RECEPTACLE.

THE MAINS PLUG OF THE POWER SUPPLY CORD MUST
REMAIN READILY ACCESSIBLE.

NOTES: This equipment has been tested and found to comply
by Competent Body (Directive 2004 /108 / EC) pursuant to the
product family standard for audio professional use: EN 55103-1
and EN 55103-2 standard.

This equipment has been tested and found to comply by Notied

Body 2014 (Directive 2006 / 95 / EC) pursuant to the audio appa­ratus safety requirements: EN 60065 and EN 6006/A1 standard.

EXPLANATIONS OF GRAPHICAL SYMBOLS

The Lightning Flash with arrowhead symbol within an
equilateral triangle is intended to alert the user to the
presence of uninsulated “dangerous voltage” within the

product enclosure that may be of sufcient magnitude to

constitute a risk of shock to persons.

The Exclamation Point within an equilateral triangle is
intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in the
literature accompanying the product.

2 Precautions regarding installation

2.1 Location

SAFEGUARDS: This unit has been engineered and manufactured
to assure your personal safety. Improper use can result in potential
electrical shock or re hazards. In order not to defeat the safe­guards, observe the following instructions for its installation, use
and servicing.

f Read these instructions.
f Keep these instructions.
f Heed all warnings.
f Follow all instructions.
f Do not use this amplier near water.
f Clean only with a dry cloth.
f Ensure a proper ventilation.
f Install in accordance with Powersoft’s instructions.
f Do not install near any heat sources or apparatus that

produce heat.

f Protect the power cord from being walked on or pinched

particularly at plugs, convenience receptacles, and the point
where they exit from the apparatus.

f Do not defeat the safety purpose of the polarized or

grounding-type plug. A polarized plug has two blades with

one wider than the other. A grounding type plug has two
blades and a third grounding prong. The wide blade or the
third prong are provided for your safety. If the provided

plug does not t into your outlet, consult an electrician for

replacement of the obsolete outlet.

f Unplug this amplier during lightning storms or when unused

for long periods of time.

f Contact the authorized service center for ordinary and

extraordinary maintenance.

f Only use attachments/accessories specied by Powersoft.

Install the amplier in a well-ventilated location where it

will not be exposed to high temperature or humidity.

Do not install the amplier in a location that is exposed to direct

sun rays, or near hot appliances or radiators. Excessive heat can
adversely affect the cabinet and internal components. Installation

of the amplier in a damp or dusty environment may result in

malfunction or accident.

Placing and using the amplier for long periods of time on

heat generating sources will affect its performance. Avoid

placing the amplier on heat generating sources. Install this am­plier as far as possible from tuners and TV sets. An amplier

installed in close proximity of such equipment may experience
noise or generic performance degradation.

No naked ame sources such as lighted candles should be
placed on the amplier.

Do not spill water or other liquids into or on the amplier.

WARNING

To prevent re or electric shock:

f The ventilation openings must not be impeded by any item

such as newspapers, tablecloths, curtains etc; keep a distance
of at least 50 cm from the front and rear ventilation openings

of the amplier.

f Do not expose this amplier to rain or moisture.

f This equipment must not be exposed to dripping or splashing

liquids: objects lled with liquids, such as vases, must not be
placed on the amplier.

4

2.2 Wiring

This device must be powered exclusively by ear th con-

nected mains sockets in electrical networks compliant to
the IEC 364 or similar rules. It is absolutely necessary to verify this
fundamental requirement of safety and, in case of doubt, require

an accurate check by qualied personnel.

POWERSOFT cannot be considered responsible for eventual
damages caused to persons, things or data due to an improper
or missing ground connection.

f Before powering this amplier, verify that the correct voltage

rating is being used.

f Verify that your mains connection is capable of satisfying the

power ratings of the device.

f Do not use this ampliler if the electrical power cord is frayed

or broken.

f Do not remove the cover. Failing to do so will expose you to

potentially dangerous voltage.

f Provide a sectioning breaker between the mains connections

and the amplier. The suggested device is a 16A/250V AC, C

or D curve, 10 kA.

f Switching mode amplier is capable of producing hazardous

output voltages. To avoid electrical shock, do not touch any

exposed speaker wiring while the amplier is operating.

This manual contains important information on operating your

Powersoft amplier correctly and safely. Please read it carefully
before operating your amplier. If you have any questions, con-

tact your Powersoft dealer.

2.3 Speaker damage

Powersof t switching mode ampliers are among the most

powerful professional ampliers available and are capable

of producing much more power than many loudspeakers can han­dle. It is the user’s responsibility to use speakers suitable to the

amplier and to use them in a sensible way that will not cause

damage.

Powersoft will not be held responsible for damaged speakers.
Consult the speaker manufacturer for power handling recom­mendations.

Even if you reduce the output volume using the amplier’s

front panel attenuation controls, it is still possible to reach full
output power if the input signal level is high enough.

A single high-power tone can damage high frequency drivers
almost instantaneously, while low frequency drivers can usually
withstand very high, continuous power levels for a few seconds
before they fail. Reduce power immediately if you hear any
speaker “bottoming out”: harsh pops or cracking distor tion that
indicate that the speaker voice coil or diaphragm is striking the
magnet assembly.

Powersof t recommends that you use ampliers in this power

range for more headroom (cleaner sound) rather than for in­creased volume.

5

3 Mechanical drawings

437,6

379,5

337,3

44,1

482

FIGURE 1: M Series mechanical drawing. All dimensions in millimiters.

6

1 2 3 4

6 7

4 Interfaces

5

FIGURE 2: M Series – MxxD front panel view.

8

9

PAT. PEND.

10 11

Made in Italy

FIGURE 3: M Series – MxxD (non HDSP+ETH) rear panel view.

3

3

2

2

4

4

1

1

5

0

5

0

6

6

9

9

7

7

8

8

Made in Italy

12

13 14

FIGURE 4: M Series

15 16 17 18 19

1. Channel 1 input attenuator

2. Channel 1 meter LEDs

3. Channel 2 meter LEDs

4. Channel 2 input attenuator

5. On/off power switch

6. Channels 1&2 ready LED

7

7. Channels 1&2 temperature warning LED

8. AC mains power plug

9. Air vents

10. Channels 1&2 line output XLR connector

11. Channels 1&2 line input XLR connector

12. Channel 2 output Speakon connector

13. Link switch channels 1-2

14. Channel 1 output Speakon connector

HDSP+ETH

rear panel view.

15. Amplier’s remote ID selector

16. Preset LEDs

17. Preset selector button

18. AUX supply plug

19. Ethernet port

8

1 2 3 4

5

CLIP

6dB

-18dB

SIGNAL

8

-

+32

dB

READY

TEMP

8

-

+32

dB

FIGURE 5: M Series – MxxQ front panel view.

6 7

8

9

PAT. PEND.

FIGURE 6: M Series – MxxQ (non HDSP+ETH) rear panel view.

18 2019 21 22 23

1. Channel 1 input attenuator

2. Channel 1 meter LEDs

3. Channel 2 meter LEDs

4. Channel 2 input attenuator

5. On/off power switch

6. Channels 1&2 ready LED

7. Channels 1&2 temperature warning LED

8. AC mains power plug

9. Air vents

10 11

Made in Italy

3

3

2

2

4

4

1

1

5

0

5

0

6

6

9

9

7

7

8

8

Made in Italy

FIGURE 7: M Series

HDSP+ETH

rear panel view.

10. Channels 3&4 line input XLR connector

11. Channels 1&2 line input XLR connector

12. Channel 4 output Speakon connector

13. Link switch channels 3-4

14. Channel 3 output Speakon connector

15. Channel 2 output Speakon connector

16. Link switch channels 1-2

17. Channel 1 output Speakon connector

1512

1613 1714

18. Amplier’s remote ID selector

19. Preset LEDs

20. Preset selector button channels 3&4

21. Preset selector button channels 1&2

22. AUX supply plug

23. Ethernet port

M Series

User Guide

5 Welcome

Congratulations on buying a Powersoft M Series amplier!
Powersof t is a leading company in the eld of high efciency

audio power management. The Powersoft Class D technology
has changed the way the world looks at professional audio

amplication: no other amplier’s performance comes close for

applications demanding high power and long term reliability.

Thanks to amazing reductions in heat output and weight, without
sacricing output powers, Powersoft ampliers can be used in an

unlimited range of PA applications such as opera houses, theaters,
churches, cinema, and theme parks.

6 The M Series

M Series ampliers are specically designed for touring and live
applications. The ampliers in this series offer smaller dimensions,
lighter weight and the traditionally amazing sound quality and
reliability of all Powersoft products. M Series ampliers have

power ratings suitable for a vast range of common applications
including 70V/100V distributed line systems.

6.1 More sound and less weight

Switching mode technology based ampliers are highly
efcient, delivering greater power to speakers with reduced heat
dissipation: typical running efciency of output stages is 95%, with
only 5% of input energy dissipated as heat. This allows for smaller

dimensions, weight and power consumptions.

Contrary to conventional ampliers which achieve highest
efciency only at full rated power output, Class D efciency is

almost independent of output level. Music has an average power

density of 40% of its peak value; this means that other (non­class D) ampliers can easily generate 10 times more heat than

Powersof t products for the same sound pressure level.

The units in the M Series are designed to work with lo-Z (from

4 �) and with 70V/100V distributed lines. They can deliver up to
1500 W per channel (at 4 �) or 3000 W in bridge mode on 8 �.
The HDSP+ETH versions of all ampliers in this series allow single

channel processing and remote control capabilities.

Powersof t ampliers deliver crystal-clear highs, and a tight,
well-dened low end: the most accurate reproduction of an audio

signal. Solid time proven design features ensure extremely high
performance in terms of super low total harmonic distor tion,

optimal frequency response, high power bandwidth and damping
factor across a vast number of application scenarios. Powersoft’s
multi patented application of Pulse Width Modulation (PWM)
high frequency sampling techniques is just one of the many factors
contributing to the M Series’ high performance ratings across the
audio bandwidth.

The M Series offers complete protection against any possible

operation error. Every amplier in this series is designed to work

under a large range of possible conditions, delivering maximum
power with maximum safety and an outstanding long term
reliability. Anticipating potential problems at the design stage

means your show always goes on!

7 Installation

7.1 Unpacking

Carefully open the shipping car ton and check for any noticeable

damage; the FIGURE 8 shows the packing view. Every Powersoft

amplier is completely tested and inspected before leaving the

factory and should arrive in pristine condition. In the unlikely event
that you should encounter any damage, please notify the shipping
company immediately. Be sure to save all packing materials for the
carrier’s inspection.

Every M Series amplier box contains the following:

f 1 M Series amplier.
f 1 x AC Mains cord with 3-pin plug 15 A for US or

IEC ‘Schuko’ 16 A for every other nation.

f 1 x User Guide.

mains cable

amplifier

manual

FIGURE 8: M Series package.

9

7.2 Mounting

All Powersoft ampliers are designed for standard 19” rack

mounting with four front panel holes and two rear-lateral holes. In

order to limit the risk of mechanical damages, ampliers must be
xed to the rack using both frontal as well as rear mounting holes

(see FIGURE 9).

brackets

air flow

mains standard. Damage caused by connecting the amplier to an

improper AC mains voltage is not covered by the warranty.

By using good quality input and speaker cables, the likelihood
of erratic signal behavior is reduced to a minimum. Whether you
make them or buy them, look for good quality wires, connectors
and soldering techniques.

7.5 Grounding

There is no ground switch or terminal on the M Series ampliers.

All shield terminals of input connections are directly connected to
the chassis. This means that the unit’s signal grounding system is
automatic. In order to limit hum and/or interference entering the
signal path, use balanced input connections.

In the interests of safety, the unit MUST always operate with
electrical safety earth connected to the chassis via the dedicated
wire in the 3-wire cable. Never disconnect the ground pin on the
AC mains power cord.

mounting

holes

FIGURE 9: M Series air ow.

7.3 Cooling

All Powersoft ampliers implement a forced-air cooling system

to maintain low and constant operating temperatures. Drawn by
an internal fan, air enters through the slots in the front panel and

is forced over all components, exiting at the back of the amplier.

Th e amplie r ’s co oling sy s t em feat ures an “in telli gent” var iable-

speed DC fan which is controlled by heat sink temperature sensing
circuits: the fan speed will increase only when the temperature
recorded by the sensors rises over carefully predetermined values.
This ensures that fan noise and internal dust accumulation are kept

to a strict minimum. Should however the amplier be subject to

an extreme thermal load, the fan will force a very large volume
of air through the heat sink. In the extremely rare event that the

amplier should dangerously overheat, sensing circuits shut down
all channels until the amplier cools down to a safe operating

temperature. Normal operation is resumed automatically without
the need for user intervention.

Caution regarding heat escape should be exercised when

mounting M Series ampliers. Exhaust cooling air is forced out

through the rear of the chassis (see FIGURE 9); make sure there

is enough space around the back of the amplier for this air to
escape. M Series ampliers can be stacked one on top of the other
due to the efcient cooling system they are equipped with. There

is however a safety limit to be obser ved: in case a rack with closed
back panels is used, leave one rack unit empty every four installed

ampliers to guarantee adequate air ow.

7.4 Operating precautions

Make sure the power switch is off before attempting to make

any input or output connections.

Make sure the AC mains voltage used is within the acceptable

operating voltage range specied in the M Series documentation
(factory selected 115 V / 230 V ±15%), depending on your country

7.6 AC mains connection

The AC Mains connection is made via the IEC type connector

on the back of the amplier. Please make sure your AC mains

power source operates within the voltage limits indicated on this

manual (factory selected 115 V / 230 V ±15%).

Safety warning!

Ground wires must be connected!

Do not use adapters that disable grounding.

open the lock and
insert the plug

FIGURE 10: AC mains plug connection.

lock the plug

8 Connections and Operation

This section provides information on amplier connection and
operation. For optimal amplier performance, it is important to

understand the meaning of the information that each M Series

amplier can provide regarding its status and conguration. This

information is available to the user via front panel indicators as well

as through specic LEDs the back of the unit (for HDSP versions

only). This chapter will break down all the front panel and back
panel functions. The remaining par t of the chapter will explain

how to correctly connect the amplier’s inputs and outputs.

8.1 Front panel air lters access

The blue front panel of all M Series ampliers can be removed
to access the air lters. This is useful when the air lters need to
be cleaned due to dust accumulating and clogging the lters thus

hindering proper air circulation vital for cooling purposes.

10

To take off the blue colored front panel, remove the two

1

GND

Balanced input Unbalanced input

COLD –

HOT +

2

3

1

GND

HOT +

2

3

screws highlighted in with a Philips screwdriver. The panel will

easily separate from the amplier exposing the sponge-like air
lters.

CLIP

6dB

-18dB

SIGNAL

8

8

-

-

+32

+32

dB

dB

TEMP

READY

FIGURE 11: Unscrew and remove the front panel.

Before replacing the front panel, remember to reposition the

air lter on the chassis by placing it on its designated area, then

reposition and tighten the two frontal screws.

8.2 Front panel adjustments

The front panel of all M Series ampliers has one

stepped attenuation pot for each channel. Turning the pot
counterclockwise, the user can modify the level of the input
signal in steps corresponding to a gain reduction ranging in:

-∞, 4, 14, 18, 20, 22, 24, 26, 28, 30, 32 dB.

8.3 Front panel monitoring

8.4 Connecting audio inputs

8.4.1 MxxD models

Audio input connections are made via two XLR connectors

found on the rear of the amplier. Signal looping (i.e. link thru) is

possible using the two XLR male connectors which are also found
on the back panel. The Link on/off button allows to connect input
channels 1 and 2 in parallel.

8.4.2 MxxQ models

Audio input connections are made via four XLR connectors

found on the rear of the amplier. Signal looping (i.e. link thru) is

possible using the two XLR male connectors which are also found
on the back panel. The Link on/off buttons allows to connect input
channels 1 and 2 (and/or channels 3 and 4) in parallel.

The M Series front panel provides important information on

the state of the amplier. It is important to know and understand

the meaning of every front panel indicator LED in order to have

crucial information on the amplier status.

There are two sets of LEDs on the M Series front panel:
channel indicators and status indicators. Channel indicators: each
channel has its own column set of 4 LEDs. The top LED is red, and
the following three are green. Status indicators: each channel pair
has one set of two green status indicator LEDs.

The function of both families of LEDs is summarized in TABLE 1.

Channel indicators

LED Color Solid ON Label

Channel output level has

RED

GREEN

GREEN

reached clipping limits

Shor t circuit protection has

Channel output level is above

-6 dB of max output level

Channel output level is above

-18 dB of max output level

OR

been engaged

CLIP

-6 dB

-18 dB

GREEN Input signal presence SIGNAL

Status indicators

LED Color Solid ON Label

GREEN Channel is ready RE ADY

YELLOW

* Should the tempe rature exceeds 8 5° C, th e LED will st ay on an d the ch anne l will b e mute d.

The ampl ier will r esum e no rma l fu nct ioni ng a nd t he LED will tur n of f a utomatically wh en t he

temperature f alls b elow 75° C .

Output power is being

reduced due to heat sink

temperature exceeding 75° C

TEMP

*

TABLE 1: M Series LEDs chart.

FIGURE 12: Balanced and unbalanced input XLR connections.

8.5 Connecting audio outputs

WARNING!

Lethal voltage levels may be present at the loudspeaker

connectors when the amp is turned on!

All output connections are made via speakON connectors.
Both bridge as well as single channel output connection modes
are available. In the single channel mode wiring, the 1+ pin of the
connector corresponds to the positive output of the channel, the
1– to ground (see FIGURE 13); for bridge mode refer to Section

8.5.2.

All 4 channel amplier (MxxQ) manage bridge and single
channel mixed conguration; for example, channels 1 and 2 can

be set in bridge mode, and channels 3 and 4 single-ended.

M Series ampliers are designed to be connected both to lo-Z

loudspeakers as well as hi-Z, 70V / 100V distributed lines directly.

8. 5.1 Lo-Z and 70V/100V operations

High impedance loudspeakers can be paralleled in 70V/100V

distributed lines and directly managed by the M Series ampliers.

High output voltage per channel of M20D, M30D and M50Q

ampliers guarantees direct connection to hi-Z loudspeakers in a

line (see FIGURE 13).

8.5.2 Bridge Mode Connection

Bridge mode connection of outputs is possible only in lo-Z
operational mode. Bridging of adjacent channels is possible for the
following pairs: channels 1 with 2 for all models and channels 3
with 4 for MxxQ models. Bridging is NOT possible for other pairs,
for example channels 1 and 3.

11

speakON

connector

1–

Channel 1

speakON

connector

1–

speakON

connector

1–

a

Single channel mode

on channels 1 and 2, while the second column refers to the preset
selected for channels 3 and 4. A signal can be sent remotely to the
amp to force all preset LEDs to blink for 30 s; this can be useful in

1+

2–

2+

a situation where many ampliers are networked together and it
is necessary to identify which amplier corresponds to a particular

network address.

9.2 Ethernet port and remote ID selection

The ID selection doesn’t implement a communication function

but is necessary in order to recognize the ID of the amplier when

b

Biamp

CH1

remotely connected. This two digits number is set via the encoders
by choosing tens digits through the lef t hand rotary selector and
unit digit through the right hand rotary selector.

ID number 00 is not allowed.

1+

2–

2+

CH2

9.3 V Ext

The “V Ext” plug, located on the rear panel of M HDSP Series

ampliers, is used to supply the amplier’s internal Ethernet

controller with the minimum power required for remote on/off
switching operations. When the V Ext port is powered by an
external 9 V – 12 V DC (900 mA) power supply, the Ethernet
controller is enabled to listen for incoming connections such as
device power-on commands.

c

Bridge mode

1+

2–

2+

3

3

2

2

4

4

1

1

0

5

5

0

6

6

9

9

7

7

8

8

a) single channel mode, low impedance loudspeaker;

FIGURE 13: Loudspeaker wiring;

b) single channel biamplied w/ active crossover: CH1 high, CH2 low;

c) bridge mode.

In order to set the output in bridge mode:

f parallel the input by pressing on the link button;

f connect the loudspeaker to just one speakON: 2+ pin is the

positive and the 2– the negative;

f minimum load impedance shall be 8�.

9 M Series HDSP+ETH operation

9.1 Rear Panel LEDs

The rear panel of the M Series with optional HDSP has a

4-green-LED column per channel pair. The LED lights to indicate

which preset is active for that specic channel pair. Preset
parameters are dened, set and modied by connecting the M
Series amplier with the optional HDSP to a computer running the
Armonía Pro Audio Suite. In case of a 4-channel amplier (MxxQ
models), the rst LED column indicates the selected preset active

Made in Italy

FIGURE 14: Ethernet port ID selector and VExt plug.

9.4 DSP features and operations

The main purpose of Digital Signal Processing (DSP) operations
is to allow the end user to program signal handling and processing
in order to:

f Select and handle the source signal;
f Process the signal for system operationM
f Process the signal to improve multi way speaker sound quality

and protect speaker drivers.

Furthermore, the DSP allows access to real-time information
on the internal device operation. This provides the end user with
reliable information on the internal state of the device as well as

better and faster amplier response in terms of control.

9.4.1 DSP Features

The M Series amplier HDSP is based on the DSP-D board

platform and the Analog Device ADAU 1701.

The DSP-D board’s exible design caters a wide range of users:
from the speaker manufacturer to the end user of rack ampliers.

The DSP-D provides both a completely programmable DSP to the

12

experienced user as well as a complete tool with remote control

for the end user. The ADAU 1701 device is a xed point DSP

with 28-bit resolution for the internal path and 56-bit for internal
processing. The board also provides full remote control through
Armonía Pro Audio Suite.

The M Series DSP is modular for any channel pair, meaning,
for example, that on a MxxD one module is available for channels
1 and 2 while on a MxxQ there are two modules available: one
for channels 1 and 2 and another for channels 3 and 4. Keep in
mind that the modules are physically separated, therefore input or
output from different modules can’t be mixed together.

9.4. 2 Input routing selection and internal signal route

Due to the internal amplier structure, it is impossible to mix

signals from non adjacent channels: for example, channel 1 and 4
cannot be mixed together but only channels 1-2 and channels 3-4

(on MxxQ models) can. The following congurations are possible

for any channel pair:

f 1 input – 2 outputs
f 2 inputs – 2 outputs
f 2 mixed inputs – 2 outputs

9.4. 3 Input section

The input section allows system operation to improve sound

for a specic zone, group of speakers, room, etc. The input section

provides an input eq for any input channel with the following
features:

f 5 biquad lters, any lter can become PEQ, shelving hi-lo

pass, all pass

f Delay: up to 170 ms for 2 in/2 out and up to 340 ms for 1

in/2 out congurations

f Gain between -40 dB and 6 dB
f Mute
f Reverse polarity

9.4.4 Output section

The output section allows multiway cabinet equalization and

protection. The output section comprises an output eq and a
limiter (peak and RMS) for each channel.

f Eq feature:

f

12 biquad lters, any lter can become PEQ, shelving hi-lo

pass, all pass. The crossover functions are obtained using

one to four biquad lters for each crossover.

f

Delay of 10 ms

f

Gain between -40 dB and 6 dB

f

Mute

f

Reverse polarity

f Peak limiter feature:

f

Threshold, 20 – 135 V. With 1 V steps

f

Hold time, 0 – 2 sec. With 1 ms steps

f

Release time, 0 – 2 sec. With 1 ms steps

f

Release time, 4 – 4500 ms. With 1 ms steps

f

Two biquad lters for frequency shaping. Frequency

shaping is a function obtained by pre and post limiter eq.
The same eq (with opposite gain) is applied before and
after the limiter.

f Damping control:

f

Impedance correction between -2 � to +2 � with 0.1 � steps.

9.5 Internal processing layout

The following two layouts are available for each module (and its

associated channel pair):

f 1 In / 2 out basic layout
f 2 In / 2 out basic layout with mono mix capabilities.

Due to the internal structure of the DSP, in order to optimize

performance, two different binary presets for 1 input / 2 output

congurations and for 2 input / 2 output congurations must be

used. Be aware that any change in the binary preset causes an
audio interruption while the M Series microprocessor loads the

preset data into the DSP. This means that a change in conguration

(e.g. going from 1 input to 2 inputs ) or reloading a preset from
the internal memory results in an audio interruption.

NOTE: The following information is valid for any single DSP
module (2 channels). Devices with 4 channels are formed by 2
completely independent modules.

9.5.1 Input routing

The two following congurations are available:

f 1 In / 2 out, the input is routed from channel 1.

f 2 In / 2 out, the input is routed from channel 1 and channel 2.

It is possible to mix the two signals together; the mono mix
function sums the two sources and halves their summed level.

9.5.2 Input section

The input section is formed by the input eq alone, one for
each channel of the loaded layout. For example, in the 1 input /
2 output module layout there is only 1 input eq for both output

channels. Every input eq has 5 biquadratic lters which can be
chosen and assigned from the set of standard IIR lters.

9.5.3 Output section

Every module provides each channel with a set of 12 biqaudratic

lters and a complete set of limiters for protection purposes:

f Output eq: 12 biquad lters can be chosen for shaping (PEQ,

shelving, etc) but these are shared between the crossovers.

Each crossover can consume 1 to 4 biquad lters, depending

on the crossover slope. TABLE 2 and TABLE 3 illustrate

a number of crossover congurations. Mixed crossover
congurations are possible (e.g. HP 12 dB/oct, LP 24 dB/oct).

f Peak limiter for every output.

f RMS limiter feature:

f

Threshold, 13 – 312 W @ 8 �. With 1 W steps

f

Attack time, 2 – 4500 ms. With 1 ms steps

f

Hold time, 0 – 1 sec. With 1 ms steps

f RMS limiter for ever y output.

f Frequency shaping.

f Damping control for ever y output.

13

First crossover

Free biQuad

lters remaining

Slope

6/12 d B /oct

Slope 18/24

dB/o ct

11 10 9 8

Slope 3 0/36

dB/o ct

Slope 4 0/48

dB/o ct

TABLE 2: First crossover lters.

Second crossover

Free biQuad

lters remaining

Slope

6/12 d B /oct

Slope 18/24

dB/o ct

10 8 6 4

Slope 3 0/36

dB/o ct

Slope 4 0/48

dB/o ct

TABLE 3: Second crossover lters.

9.6 Locking

The locking mechanism allows to lock macro proper ty values
based on the functional sub section and on the channel base of the
device; the lockable sub sections are:

f Input routing:

f

Mono mix

f

Input Section:

f

Equalizer

Signal

routing

Input

input

eq

output

eq

peak lim.

rms lim.
damping

Input

FIGURE 15: DSP internal layout.

WARNING! Selecting a preset with a rear button or via

remote control will interrupt the audio stream

for some seconds.

WARNING! Store the modied preset before turning the unit

off or all changes will be lost.

NOTE: Selecting presets with the rear button is enabled only

if remote control is NOT active.

10 Remote control

f Output Section:

f

Equalizer

f

RMS Limiter

f

Peak Limiter

f

Damping Control

Every channel subsection is independently lockable.

9.7 On/Off

The on/off function is available when an ex ternal voltage is
supplied. Please refer to Section 9.3 for further information.

9.8 Preset Management

The DSP allows to manage up to 4 presets per module and its
associated channel pair. Each preset contains information on the
following:

f Input routing

f Input Section

f Output Section

f Properties locking

The preset is handled by the client as a le with the .preset

extension.

These presets can be selected via a preset selection button
on the rear panel of the amp. There is one button for each DSP
module. The manual preset selection function is disabled if the

amplier is remotely controlled by any client.

Ampliers in the M Series are shipped with 4 default factory

presets: positions one and two store a 2 in / 2 out routing preset
each with an input delay of 170 ms. Positions three and four store
a 1 in / 2 out preset with 340 ms input delay each.

The M Series HDSP+ETH boards allow full amplier remote

control with Powersof t’s software client Armonía Pro Audio Suite.
Other third par ty clients are also available.

Armonía Pro Audio Suite is a sof tware environment entirely

developed in-house by Powersoft featuring full end user remote

control of Powersoft’s ampliers and audio signal processing. The

intuitive interface provides reliable information and real time
control of all DSP functions. Refer to the Armonía manual for

installation and conguration of the client software.

10.1 Networking

M Series HDSP+ETH ampliers come with one rear RJ45 port

for remote device communication, using the IP layer and the UDP

protocol. Factory default settings are DHCP/AutoIP, but a xed IP

policy can also be adopted.

10.1.1 Discovery device

In order to star t remote
operation on the device
connected to your network,
it must be discovered and
impor ted into the Armonía
workspace.

It may happen that a static
IP in a different subnet with
respect to Armonía has been

assigned to your M Series amplier (i.e. 10.0.x.y versus 169.254.x.y):
if this is the case Armonía does not recognize the amplier. You
have to reset the IP conguration of your M Series amplier: see

Annex 1 for the right procedure.

10.1.2 DHCP

When the data cable is connected the amplier begins DHCP

handshaking. If a DHCP ser ver is present on the network, the unit
is ready to be remotely controlled.

14

10.1.3 AUTOIP

Every device tries to set up network communication when the
data cable is plugged in and connected to another device (PC,
switch, etc.). If a DHCP server is not active in the device network

the units initiates a stateless address auto-conguration. It self

assigns a link-local address of the type 169.254.x.y with a subnet
mask 255.255.0.0. Please make sure that your PC is in the same
subnet of the unit. Modern operating systems provide Zeroconf

features for network auto-conguration.

10.1.4 Static IP

M Series devices can be set up with a static IP (or any other IP
policy) with the Armonía control sof tware. In order to set up the
IP address please follow these steps.

1. Connect the device in a network with or without DHCP (see
Section 10.1.2).

WARNING! The device is reachable only from PCs in the same

subnet mask, if this information is lost you will need to re-init

the network device with a third-party software.

When done, the device network will restart automatically. The

device will reconnect in approximately 15 seconds.

10.1.5 Revert from static IP

If for any reason re-programming the IP address or the IP policy
of your unit should be necessary, follow the instructions in the
previous chapter and make a different selection when assigning
the IP. For example, should you need to revert the device to the
automatic (DHCP, Zeroconf ) IP settings, please follow these
steps. Connect the device in a network with or without DHCP
(see Section 10.1.2).

FIGURE 16: Push on the Network setting button.

2. Discover the device and import it in the workspace (see
Section 10.1.1 or refer to the Armonía user guide).

3. Go to the device scheme tab and select the Network settings
button.

4. Select the Static addressing mode from the combo box.

FIGURE 17: Select the static IP policy.

5. Inser t the desired IP Address and network mask. Specifying
the gateway is necessar y only in complex LANs.

FIGURE 19: Enter the network settings.

1. Discover the device and impor t in the workspace (see Section

10.1.1 or refer to the Armonía user guide). Device and PC
must use the same subnet. If you are not able to reconnect

the device please refer to “Annex A: IP management and
recove r y ”.

2. Go to the device scheme tab and select the Network settings

FIGURE 20: Select Auto addressing.

button.

3. Select the Auto addressing mode from the combo box.

4. Click apply settings button.

When done, the device network will restart automatically.

The device will reconnect in approximately 15 seconds.

FIGURE 18: Fill in the IP, subnet, and net mask.

6. Click apply settings button.

15

10.2 Setup device

There are two ways to congure the device, based on your

needs and on the availability of the real device. The main difference
is that you can either work with vir tual devices before going online
and then send the setup to the units remotely or you can operate
on the physical unit directly.

10.2.1 Virtual device

If for some reason the devices are not available, conguration

must be carried out via virtual devices or a system of virtual
devices.

1. Select the device from the models
window

2. Drag and drop in the Workspace

3. If you already have a device preset

(.pam) you can import it by right
clicking on the device (see FIGURE

21).

4. You can modify any DSP value

following the instructions Section

10.8.

At this point you can save and

load the system le (.paw) at a later

time. Please refer to the Armonía
documentation. If the devices are ready
for remote control you can associate
the vir tual device to the real device. To
do so, please follow the instructions in
the next section.

FIGURE 21: Left click to select (the blue rectangle appears)

and right click for import.

10.2.2 Congure layout

Virtual devices allow the use to
select the processing layout for any
single DSP module. Select the desired
layout in the preset tab of any vir tual
device (see FIGURE 22).

10.2.3 Real device

Working on the real device remotely
is also possible. In this case all changes
made to a device are immediately
audible. In order to work on a real device:

1. Connect the device and discover the connected units (see
Se c t i on 10.1).

2. Drag the remote device into the workspace onto the virtual
device (see FIGURE 23).

3. If the internal device setup is different you’ll be
prompted to select the realignment direction.
By selecting yes the device setup is transmitted from the
virtual device to the real device. By selecting no the device
setup is transmitted from the real device to the vir tual one.

WARNING! By answering “yes” to the realignment question,

the M Series device loses data on the selected preset slot.

FIGURE 22: Select the desired layout in the combo-box.

FIGURE 23: Drop the discovered device on the virtual device; when

the arrow appears, release the left mouse button

It is now possible to operate on the device.

16

FIGURE 24: Realign window, asking for synchronization.

WARNING! Remember that turning off or disconnecting the
power plug without saving changes on any internal memory slot leads
to data loss. Before turning off, save the data on any internal slot or

export to a .pam le.

10.3 File operations

IMPORT: save a .preset le on the selected slot and recall that slot.

WARNING! This leads to a couple of seconds interruption of

the audio stream.

WARNING! The data contained in a .preset le irreversibly

modies a preset slot and its internal layout.

There are several import/export possibilities from/to les on a

M Series unit. This section contains an explanation of all possible
cases.

WARNING! Due to the internal structure of the device, some of

these le operations can cause a temporary interruption of audio.

10.3.1 Binary preset le .preset

Handling of the internal binary preset of an M Series DSP
module is possible in the preset tab of the device.

10.4 Input/output curves .icp, .ocp

From the input or output tab of an M Series device, import/

expor t of the current equalization curve is a straightforward

procedure.

WARNING! All changes will be lost if the preset is NOT

stored on board before unplugging the unit from the mains.

FIGURE 27: The output eq: there are 4 possible choices

to handle the cur ve.

FIGURE 25: MxxD have only one DSP module.

FIGURE 26: MxxQ have two DSP modules. It is therefore necessary

to change both slots.

EXP O RT: export the actual preset slot to a .preset le.

WARNING! If the actual playing preset wasn’t saved before

export, the exported binary will be the last stored binary and

not the current playing preset.

10.5 Channel preset .chp

Impor t /export of the current playing processing from/to a le

is possible by star ting from the device’s layout.

FIGURE 28: All possible channel operations are available by right

clicking on the respective channel.

WARNING! All changes will be lost if the preset is NOT

stored on board before unplugging the unit from the mains.

NOTE: Impor ting channel preset les doesn’t modify the

internal structure of a device. For example, a channel expor ted

from a 1 in / 2 out conguration doesn’t affect the internal

structure when imported in 2 in / 2 out processing layout.

17

NOTE: In the 1 in / 2 out conguration, the input eq is expor ted

(or applied) to both input eq’s. For example, exporting 1 in / 2 out

congurations exports the unique input eq to both channels.

10.6 Device preset le .pam

The preset le allows to impor t/expor t entire dumps of the
device. An exported .pam le allows to completely replicate the

DSP process on another device. In order to import/expor t a .pam

le:

f Select the device (a blue rectangle will appear)
f Right click on the selected device
f Click on import/export

When importing a .pam le you’ll be prompted for a decision

on the realignment policy to adopt.

By selecting yes, the device setup is transmitted from the
virtual device to the real device. By selecting no, the device setup
is transmitted from the real device to the vir tual device.

WARNING! Importing a .pam le leads to a short interruption

of the audio stream.

WARNING! Importing a .pam le overwrites the current preset

slot on the device. Any previous data on the slot will be erased.

f yes, the device specied in the window will be aligned to the

data in the .paw le;

f yes to all, all the devices will be aligned to the data in the

.paw le;

f no, the device specied in the window will NOT be aligned

to the data in the .paw le but the data will be reloaded from

the device.

f no to all, all the devices will NOT be aligned to the data in

the .paw le but the data will be reloaded from the devices.

WARNING! During import or preset manager operations the

save .paw function is disabled.

10.8 DSP remote operations

WARNING! Due to the internal structure of the system some of

the following le operations can lead to a short audio interruption.

WARNING! All changes will be lost if the preset is NOT

stored on board before unplugging the unit from the mains.

10.8.1 Routing

The input routing is based on the processing layout used: the

1 in / 2 out conguration, for example, allows input on odd
channels only. On the other hand, the 2 in / 2 out conguration
allows input on every channel. In this conguration, a mono mix

from both channels is also allowed: the two channels are added

together and their sum divided by two to normalize the resulting
level. Available congurations are listed in TABLE 4 and TABLE 5.

FIGURE 29: The .pam import/export operation from the workspace.

Note the blue rectangle on the selected device.

10.7 System File .paw

Saving or opening a system le permits the storage of the entire

processing of the current device imported in the workspace. For

more information on system conguration, please refer to the

Armonía manual.

The save operation may be seen as a large .pam expor t of the

entire device; on the other hand, opening a .paw le is equivalent

to performing a large .pam import on multiple devices. The user
will be prompted for multiple realignment decision on any de-

synchronized devices.

If the question is answered with:

Module 0 conguration Input M odule 0 Output Module 0

1 In / 2 Out Ch1 Ch1/Ch2

2 In / 2 Out Ch1/Ch2 Ch1/Ch2

TABLE 4: MxxD ampliers routing.

Module 0 conguration Input M odule 0 Output Module 0

1 In / 2 Out Ch1 Ch1/Ch2

2 In / 2 Out Ch1/Ch2 Ch1/Ch2

Module 1 conguration Input Module 1 Output Module 1

1 In / 2 Out Ch3 Ch3/Ch4

2 In / 2 Out Ch3/Ch4 Ch3/Ch4

TABLE 5: MxxQ ampliers routing.

10.8.2 Input eq

The input eq is intended for system operations. The input eq provides

a range of biquad lters that can act as any generic IIR lter. From the

input eq page, the frequency response of each channel can be adjusted
in several ways. Discrete time delays can also be inserted. The presence
of every input eq used in the device layout is reported on the tabbed
channel on the bottom left hand side of the screen. The frequency
response cur ves, together with other View items, are color coded: blue
for channel 1, red for channel 2, green for channel 3, orange for channel

4. Every channel allows regulation of lters, mute, gain, delay and polarity.

The frequency response (and/or phase response) curve displayed is

always obtained as the combined response of all currently active lters.

18

FIGURE 30: The input eq layer.

10.8.3 Output eq

This page’s general appearance is similar to that of the Input

Equalizer page, but presents several important differences.
The Output Eq. cur ve the amplier employs is meant to be

created from the speaker manufacturer’s data for the par ticular

loudspeaker cabinets or arrays the amplier will be driving. It
provides a range biquad lter that can act as crossover or generic
IIR lter. From this page, the frequency response of each channel

can be adjusted in several ways. Discrete time delays can also be
inser ted. The presence of ever y output eq. present in the device
layout is repor ted on the tabbed channel on the bottom left
hand side of the screen. The frequency response curves, together
with other View items, are color coded: blue for channel 1, red
for channel 2, green for channel 3, orange for channel 4. Every

channel allows regulation of lters, mute, gain, delay and polarity.

The displayed frequency response (and/or phase response) curve
is always obtained as the combined response of all currently active

lters.

FIGURE 32: The limiters dialog window.

drivers from burning out due to excess power being delivered over
an extended period of time. The RMS limiter is set by selecting a
desired maximum power value but acts by limiting output voltage;

by applying Ohm’s law with a xed reference 8 � load, the output

voltage level corresponding to the desired maximum output
power value is calculated as the square root of power times the

load resistance (8 �). It is possible to set the values of:

f Threshold in watts, with respect to an 8 � load.

f Attack time is the time between the moment the output

voltage exceeds the threshold and the moment of the onset
of the limiting action.

f Hold time is the length of time during which the limiting action

is maintained before the gain returns to normal levels because
the output voltage drops below the threshold level.

f Release time is the length of time over which the limiting

action is reduced and the gain is returned to normal following
the drop of the output voltage below the threshold level.

10.8.6 Peak limiter

The function of the peak limiter is to protect voice coils from

excessively large signal peaks by limiting the maximum output

voltage of the amplier. It’s possible set the values of:

FIGURE 31: The output eq layer.

10.8.4 Limiters

The function of the limiters is to protect voice coils from
burning out due to excess power being delivered over an extended
period of time or from excessively large signal peaks by limiting the

maximum output voltage of the amplier. The limiter window is

accessible by clicking on the limiter block in the device layout view.
Every channel limiter is color coded: blue for channel 1, red for
channel 2, green for channel 3, orange for channel 4.

10.8.5 RMS limiter

Electromechanical transducers are highly inefcient; as such
they transform a signicant amount of input power into heat. The

function of the RMS limiter is to protect the voice coils of speaker

f Threshold in volts, is the amplier max output voltage level

corresponding to the maximum displacement of the speaker
diaphragm.

f Hold time is the time over which the limiting action is

maintained before the gain level is returned to normal after
the output voltage drops below the threshold.

f Release time is the length of time over which the limiting

action is reduced and the gain is returned to normal following
the drop of the output voltage below the threshold level.

10.8.7 Damping factor correction

The effect of cable resistance on a high power amplier

performance becomes signicant at low frequencies, as the cable

resistance can affect the output stage damping factor. Powersoft
Damping Control is a proprietary algorithm which compensates
for cable resistance. The user can enter cable parameters and the
algorithm calculates and applies the appropriate correction. A tool
to calculate the cable resistance is provided.

Damping factor correction can also be used to ne tune low

end nuances: a negative resistance leads to a punched bass while a
positive resistance leads to a tailed bass.

19

The following values can be set by the user:

f Enable: enables the correction algorithm.

f Resistance compensation: set the negative or positive resistance

value added to the output circuitry.

The cable resistance tool allows to set:

f Cable dimensions: enter the gauge of the wire used in the

speaker cable and the cable length into the Wire gauge
dropdown list and the Wire length spinbox respectively.
The upper drop-down list allows to choose between metric
(international) and imperial units. The range of imperial wire
gauges is 6 AWG to 23 AWG, and of metric wire gauges 0.25

2

mm

to 10 mm2. Maximum cable lengths are correspondingly

3280 ft or 1000 m.

f Resistance compensation: clicking Apply sets the cable

resistance value calculated as the correction factor. The fader
and its spinbox assume this value. However, the user can
manually modify this calculated nominal value to obtain, for
example, an enhanced LF response.

FIGURE 34: Click on the preset locking button in the

layout tab of the device.

FIGURE 33: The damping control window.

10.9 Locking

The locking mechanism allows the user to prevent changes to a
whole preset or a part of a preset. The locking interface is divided
in DSP module(s) and macro processing. Every module needs to
be locked separately; the lock status is preserved with the import/

expor t from/to le and copy/paste operations. In order to lock/

unlock an entire module or par ts of a module:

1. Access the locking interface.

2. If the module you want to modify is already locked, you need

to inser t the unlocking password for that module.

3. In order to lock the module with the selected layout, insert
the locking password and press the button Apply.

FIGURE 35: Functions and symbols in the preset locking window:

1. Select module; 2. Select channel for the macro property.

3. A padlock indicates a locked property; 4. A pencil indicates a
writable property; 5. The combo box allows to change the

single macro property.

10.10 On board preset operations

The preset tab of all M Series devices allows handling of the

internal binary preset of an M Series DSP module.

FIGURE 36: MxxD preset handling.

FIGURE 37: MxxQ preset handling.

SAV E: allows saving of the current DSP processing on the

selected preset slot.

A number of operations are allowed here. Please refer to for

an explanation of the various functions and symbols.

20

LOAD: recalls the selected preset slot.

WARNING! (re)Loading a preset causes a couple of seconds of

interruption of the audio stream.

10 .11 Copy and paste operations

Any paste operation does not affect the DSP binary and its
corresponding structure; therefore, applying data with the paste
command does not lead to audio interruption.

WARNING! Any data pasted into a device needs to be saved in
a preset slot, otherwise any turn off/on cycle leads to data loss.

10.14 Work space

The copy/paste function from an M Series device to another M

Series device is limited to:

The same family device (e.g. source M20D, target M20D).
The same internal processing layout (e.g. source 1IN/2OUT,

tar get 1I N/2O U T ).

WARNING! All changes will be lost if the preset is NOT

stored on board before unplugging the unit from the mains.

10.12 Input/output eq curves

In order to copy/paste an eq curve, copy the source curve with
the dedicated copy function and paste to the destination eq. with
the dedicated paste function.

WARNING! All changes will be lost if the preset is NOT

stored on board before unplugging the unit from the mains.

FIGURE 38: The output eq, there are 4 possible alternatives to

handle the curve.

10.13 Channels

Copy and paste of the current playing processing setup from/to
the clipboard is possible from the device layout.

WARNING! All changes will be lost if the preset is NOT

stored on board before unplugging the unit from the mains.

NOTE: pasting a channel preset le doesn’t modify the internal

structure of a device. For example, a channel copied from a

1 in / 2 out conguration doesn’t affect the internal structure

when pasted in a 2 in /2 out processing layout.

NOTE: in the 1 in / 2 out conguration the input eq is copied (or
applied) to both input eq’s. For example, copying the conguration
of both channels (1 in /2 out conguration) leads to pasting the

unique input eq to both channels.

11 Protection

In order to protect your device and your speakers from

accidental damage, M Series ampliers include an extensive

automatic protection system. In the following sections, potentially

dangerous scenarios and the ampliers’ corresponding protective

response are explained in detail.

11.1 Turn on/Turn off muting

Class D ampliers may cause severe speaker damage at power

up due to the high voltage levels at the output stage. In order to
avoid this, the outputs are muted for less than 2 seconds (less
than 5 seconds for DSP models) after turn on. Similarly, turning

off the amplier can cause the same problem: outputs are muted

immediately at turn off.

11. 2 Short circuit protection

Shor t circuits or ver y low impedance loads may destroy the

output stage of any amplier. In order to protect the amplier

from the dangerously high current surges arising from accidental
output short circuits or low impedance loads, all M series amps
block channel activity when the current drawn from the load rises
above a set value. The channel is muted for 2 seconds after which

the amplier will unmute the channel and check whether the

current draw is still over the safety threshold. Should this be the

case, the amplier will mute the channels for another 2 seconds

and the procedure will reiterate. The red “CLIP” LED will be
turned off only when the output current draw will have returned
within safe limits.

11. 3 Thermal protection

All Powersoft ampliers have variable speed fans to assist

cooling. If for some reason the cooling system can’t dissipate
the produced heat correctly, a thermal protection system is
automatically activated to avoid permanent damages. Every
channel pair has a temperature sensor on the output stage
heat sink. Two different protection strategies are implemented
depending on the severity of the overheating. In order to protect

internal components, the amplier may automatically reduce

output power until the internal temperature returns to safe levels.

21

11. 4 Thermal warning

12.3 Dust Removal

If the heat sink reaches a temperature of approximately 75°C,
the front panel red “TEMP” LED corresponding to the overheated
channel pair turns on to warn the user of a potentially dangerous
thermal event. Output power is reduced to prevent damages to
the output stage.

11. 5 Thermal shutdown

If the heat sink temperature rises above 85°C, the thermal
sensing circuitry will mute each power section of each
compromised channel pair. Only after the heat sink has cooled
down to below 75°C the channel pair will automatically unmute
and the red “TEMP” LED will be turned off.

11. 6 DC fault protection

In order to protect your speakers from mechanical damage

caused by a DC signal coming from the amplier’s output, a DC
detection circuit is placed between the amplier’s output stage

and power supply. If a DC signal or excessive subsonic energy
appears at a channel output an instantaneous protection circuit
will mute the compromised channel pair. The red “CLIP” LED will
turn on to signal that protective measures have been engaged.

11. 7 Input/output protection

Inter ference protection is implemented in the M Series to limit
out of band noise carried by the input lines. Disturbing frequencies

can interact with the output stage, causing unpredictable amplier
behavior. A ltering system is used to stop infrasonic and VHF

signals from entering the signal path.

12 User Maintenance

In dusty environments, the front side air lters clog with dust

after prolonged use. The dust gathered in the lters will inter fere

with cooling. You may use compressed air to remove the dust

from lters. To remove air lters please refer to the front panel
removal procedure (see Section 8.1). Air lter cleaning should be
scheduled according to the dust levels in the amplier’s operating

environment.

13 Warranty

13.1 Product warranty

Powersof t guar antees its m anufact ured produ cts to be fr ee from
defective components and factory workmanship for a period of 48
(forty eight) months, starting from the date of purchase printed on

Powersof t’s (or any of its Authorized Dealer’s) invoice to the end
customer. All warranty repairs and retrots must be performed at
Powersof t facilities or at an Authorized Service Center at no cost

for the purchaser. Warranty exclusion: Powersoft’s warranty does
not cover product malfunctioning or failure caused by: misuse,

abuse, repair work or alterations performed by non-authorized

personnel, incorrect connections, exposure to harsh weather
conditions, mechanical damages (including shipping accidents), and
normal wear and tear. Powersoft will per form warranty services
provided that the product is not damaged during transpor tation.

13. 2 Return of Goods

Goods can be returned to Powersoft only af ter they have been

granted a Return Merchandise Authorization (RMA) number to be
attached to the external packaging. Powersoft (or its Authorized

Service Center) has the right to refuse any returned good without
a RMA number.

12.1 Cleaning

Before attempting to clean any part of the amplier, rst

disconnect the AC main source. Use a soft cloth and mild non­abrasive solution to clean the faceplate and chassis.

WARNING! Never let any liquid reach the internal parts of

the amplier.

12.2 Service

There are no user-serviceable par ts in your amplier. Refer

servicing to qualied technical personnel. In addition to having an

in-house service department, Powersoft supports a network of

authorized service centers. If your amplier needs repair contact

your Powersoft dealer (or distributor). You can also contact the
Powersof t Technical Ser vice depar tment to obtain the location of

the nearest authorized ser vice center.

22

13. 3 Repair or replacement

Powersof t reserves the right to repair or replace any defective
goods covered by product warranty at its sole discretion and as
it deems best.

13.4 Cost and responsibility of transport

The purchaser (or end user/customer) is solely responsible
for all transportation costs and risks associated with sending

warranty covered goods to Powersoft or its Authorized Service

Center. Powersoft will assume full responsibility and cover all costs
incurred to send the goods back to the purchaser (or end user/
customer).

14 Assistance

Even though most product malfunctioning can be solved
at your premises through Powersoft Customer Care or your
direct knowledge, occasionally, due the nature of the failure, it
might be necessary to return defective products to Powersoft for
repair. In the latter case, before shipping, you are kindly asked
to follow step by step the procedure described below: Obtain
the “Defect Repor t Form” by contacting our Customer Care
Depar tment via email: ser [e-mail] or download the
“Defect Report Form”.

Fill out one “Defect Repor t form” for each returned
item (the form is an editable tab guided document) and
save as your name, amp model and serial Number (for
example: distributornamek10sn17345.doc) providing all
required information except the RMA code/s and send it to

[e-mail] for Powersoft approval.

In case of defect reports approved by the Powersoft Customer

Service Representative you will receive an RMA authorization

code (one RMA code for each returning device). Upon receiving
the RMA code you must package the unit and attach the RMA
code outside the pack, protected in a waterproof transparent
envelope so it is clearly visible.

All returning items must be shipped to the following address:

Power soft

Via Enrico Conti, 13-15

50018 Scandicci (FI) Italy

In case of shipment from countries NOT belonging to the
European Community make sure you have also followed the
instructions described in the document available for download at the
TEMPORARY EXPORTATION / IMPORTATION PROCEDURE
link at http://www.Powersoft-audio.com/en/support/service.html

Thank you for your understanding and cooperation and
continued support as we work to improve our partnership.

23

15 M Series power rating

Model name

2 channel

ampliers

4 channel

ampliers

1 with an exte rna l high pa ss l ter fo r non HD SP mod els an d with an HDS P preset wi th a hig h pass  lter and ou tput volt age limite r for models with HDSP.
2 with an exte rna l high pa ss l ter and out put vo ltage limi ter fo r non HDSP mod els an d wit h an HDS P pre set wi th a hig h pass lte r and ou tpu t volt age li mite r for models w ith H DSP.
3 with an exte rna l high pa ss l ter fo r non HD SP mod els an d with an HDS P preset wi th a hig h pass  lter for mod els wi th HD SP.

M14D /M14D H D SP+ E TH 700 W 360 W — — 140 0 W

M20D/M20D HDSP+ETH 12 0 0 W 600 W 120 0 W

M30D/M30D HDSP+ETH 15 0 0 W 900 W 120 0 W

M28Q/M28Q HDSP+ETH 700 W 360 W — — 140 0 W

M50Q/M50Q HDSP+ETH 1250 W 750 W 1000 W

Single-channel mode Distributed lines

4 � 8 � 70 V 10 0 V 8 �

1

2

2

— 2400 W

3

150 0 W

3

1250 W

16 Output SpeakON connection polarities

CH2–

Channel 2

speakON

connector

CH2+

1–

1+

2+

2–

Channel 1

speakON

connector

CH2–

CH1–

CH1+

1–

1+

2+

2–

Mono-bridge

mode

3000 W

2500 W

CH2–

CH1+

CH1+

17 M Series load compatibility chart

Model lo-Z loads 70 V distributed line 100 V distributed line

M14D yes no no

M14D HDSP +ETH yes no no

M20D yes yes with an external high pass lter no

M20D HDSP+ETH yes yes with an HDSP preset with a high pass lter no

M30D yes

M30D HDSP+E TH yes

M28Q yes no no

M28Q HDSP+ETH yes no no

M50Q yes

M50Q HDSP+E TH yes

yes with an ex ternal high pass lter and

yes with an HDSP preset with a high pass lter and

yes with an ex ternal high pass lter and

yes with a DSP preset with a high pass lter and

peak limiter

an output voltage limiter

peak limiter

an output voltage limiter

yes with an ex ternal high pass lter

yes with an HDSP preset with a high pass lter

yes with an ex ternal high pass lter

yes with a DSP preset with a high pass lter

24

18 Specications

M14D and M14D HDSP+ETH

General

Number of channels 2 mono, bridgable per channel pair

Max output power per channel

Max output voltage 85 V

AC Mains Power

Power supply Universal, regulated switch mode

Nomin al power requiremen ts AC 115 V - 230 V (factory selec tion), 50/60 Hz

Operating range AC 97 V - 264 V

Inrush current < 26 A

Consumptio n / curre nt draw 230 V 11 5 V

Idle 39 W 0.3 A 39 W 0.6 A

I/8 of max power @ 4 � 283 W 1.9 A 238 W 3.8 A

I/4 of ma x power @ 4 � 53 8 W 3.5 A 538 W 7 A

Thermal

Environmental operating temperature 0° - 45° C / 32° - 113° F

Thermal dissipation Fan, variable speed, temperature controlled front to rear air ow

Idle 133 B TU /h 33 kcal/h

I/8 of max power @ 4 � 368 BTU/h 93 kcal/h

I/4 of ma x power @ 4 � 6 41 BT U/ h 162 kcal/h

Audio

Gain 32 dB, 30 dB, 28 dB, 26 dB, 24 dB, 22 d B, 20 d B, 18 dB , 14 dB, 4 dB, -∞, user selectable

Frequency response 20 Hz - 20 kHz ±1 dB @ 1 W, 8 �

S/N ratio (amp lier section) > 109 dB (20 Hz - 20 kHz , A weighted)

Crosstalk separation >70 dB @ 1 kHz, 4 �

Input sensitivity @ 8 � 1.4 V

Max input level 6 V

Input impedance 10 k� balanced

THD+N / D IM100 IM D < 0.02% (t ypic ally < 0.0 05%) @ 4 �

Slew rate 40 V/µs @ 8 � input filter bypassed

Damping factor > 500 0 @ 100 Hz

***

DSP

A/D converter CS5381, 2 channels, 24 bit / 48 kHz, 120 dB SNR

D/A converter CS4398, 2 c hannels, 24 bit / 48 kHz, 120 dB S NR

Frequency re sponse @ -3 dB 7 Hz - 22 kHz

THD < 0.01% (20 Hz - 20 kHz)

Presets Bank of 4 presets, mana gement and up load via Armonía Pro Audio Suite™

Delay for time alignment 10 ms per output

Crossover lters Butter wor th, Linkw itz- Riley, Besse l, 6 dB/oct to 4 8 dB/oc t

Output equalizer up to 12 biqu ad full y parametric per c hannel: peaking, hi/lo shelving, hi/lo pass, band pass, b and st op, all pass.

Input equalizer up t o 5 biquad lte rs (PE Q, shelving, band pass, b and stop, all p ass)

Limiters Peak limiter, RMS limiter, freque ncy de pendent RM S limiter

Damping control < 120 Hz, range ± 2 Ω

System Delay up to 170 ms for 2 IN /2 OUT or 340 ms for 1 IN/ 2 OUT

Front panel

Indicators 4 LEDs per channel: 3 x green , 1 x red; 2 status LEDs: 1 x green , 1 x yellow

Controls 1 stepped leve l attenuat or pot pe r chan nel; mains sw itch

Maintenance Dust lter foam behind front panels

Rear panel

Controls 1 x link switch , linking analog inputs 1 & 2

Input / Output connectors

Network dat a por t Ethernet

DSP preset selection

Aux voltage

***

***

AC main s IEC C13 16 A connector; AC mains cord with 3 -pin plug 15 A for U S, IEC Schuko 16 A for every other nation

Construction

Dimensions L x W x H: 483 mm x 44.5 mm x 379 mm / 19” x 3. 5” x 14.9”

Weig ht 7.3 kg (16 lb)

* EIAJ Tes t Standar d, 1 kH z, 1% THD, a ll cha nnel s dri ven. * ** HDSP+E TH ver sio n only.

*

4 � / Ch 8 � / Ch 8� / Ch pair

700 W 360 W 140 0 W

2 x Neutrik® S peakon NL4M D, 2 x Neutrik ® XLR male hardwired to the corresponding input

***

single channel mode bridge mode

peak

/ 65 A

peak

rms

170 V

230 V

/ +5.14 dBu

rms

/ +17.8 dBu

rms

2 x balanced Neutrik® XLR female

1 x RJ45 with activity LED with 2 rotary address switches

1 x Pushb utton (stepping t hrough bank of 4 presets); 1 x 4 LED preset i ndicators

1 x 2-pin P hoenix type MC 1.5/ 2-ST-3.81

peak

/ 65 A

peak

25

M20D and M20D HDSP+ETH

General

Number of channels 2 mono, bridgable per channel pair

Max output power per channel

Max output voltage 116 V

AC Mains Power

Power supply Universal, regulated switch mode

Nomin al power requiremen ts AC 115 V - 230 V (factory selec tion), 50/60 Hz

Operating range AC 97 V - 264 V

Inrush current < 28 A

Consumptio n / curre nt draw 230 V 11 5 V

Energy save on 35 W 0.3 A 35 W 0.6 A

Energy save off 371 W 2.54 A 371 W 3.8 A

I/8 of max power @ 8 � 701 W 4.5 A 701 W 9 A

Thermal

Environmental operating temperature 0° - 45° C / 32° - 113° F

Thermal dissipation Fan, variable speed, temperature controlled front to rear air ow

Idle 126 BT U/ h 32 kcal/h

I/8 of max power @ 4 � 529 BTU/h 133 kc al /h

I/4 of ma x power @ 4 � 935 BTU/h 236 kcal/h

Audio

Gain 32 dB, 30 dB, 28 dB, 26 dB, 24 dB, 22 d B, 20 d B, 18 dB , 14 dB, 4 dB, -∞, user selectable

Frequency response 20 Hz - 20 kHz ±1 dB @ 1 W, 8 �

S/N ratio (amp lier section) > 113 dB (20 Hz - 20 kHz, A weighted)

Crosstalk separation >70 dB @ 1 kHz, 4 �

Input sensitivity @ 8 � 1.73 V

Max input level 6 V

Input impedance 10 k� balanced

THD+N / D IM100 IM D < 0.02% (t ypic ally < 0.0 05%) @ 4 �

Slew rate 40 V/µs @ 8 � input filter bypassed

Damping factor > 500 0 @ 100 Hz

***

DSP

A/D converter CS5381, 2 channels, 24 bit / 48 kHz, 120 dB SNR

D/A converter CS4398, 2 c hannels, 24 bit / 48 kHz, 120 dB S NR

Frequency re sponse @ -3 dB 7 Hz - 22 kHz

THD < 0.01% (20 Hz - 20 kHz)

Presets Bank of 4 presets, mana gement and up load via Armonía Pro Audio Suite™

Delay for time alignment 10 ms per output

Crossover lters Butter wor th, Linkw itz- Riley, Besse l, 6 dB/oct to 4 8 dB/oc t

Output equalizer up to 12 biqu ad full y parametric per c hannel: peaking, hi/lo shelving, hi/lo pass, band pass, b and st op, all pass.

Input equalizer up t o 5 biquad lte rs (PE Q, shelving, band pass, b and stop, all p ass)

Limiters Peak limiter, RMS limiter, freque ncy de pendent RM S limiter

Damping control < 120 Hz, range ± 2 Ω

System Delay up to 170 ms for 2 IN /2 OUT or 340 ms for 1 IN/ 2 OUT

Front panel

Indicators 4 LEDs per channel: 3 x green , 1 x red; 2 status LEDs: 1 x green , 1 x yellow

Controls 1 stepped leve l attenuat or pot pe r chan nel; mains sw itch

Maintenance Dust lter foam behind front panels

Rear panel

Controls 1 x link switch , linking analog inputs 1 & 2

Input / Output connectors

Network dat a por t Ethernet

DSP preset selection

Aux voltage

***

***

AC main s IEC C13 16 A connector; AC mains cord with 3 -pin plug 15 A for U S, IEC Schuko 16 A for every other nation

Construction

Dimensions L x W x H: 483 mm x 44.5 mm x 379 mm / 19” x 3. 5” x 14.9”

Weig ht 7.3 kg (16 lb)

* EIAJ Tes t Standar d, 1 kH z, 1% THD, a ll cha nnel s dri ven. * * Ex ter nal high- pass lte r require d. ** * HDSP+ETH version only.

*

single channel mode bridge mode

4 � / Ch 8 � / Ch 70 V

120 0 W 60 0 W 1200 W — 240 0 W

/ 65 A

peak

***

1 x RJ45 with activity LED with 2 rotary address switches

2 x Neutrik® S peakon NL4M D, 2 x Neutrik ® XLR male hardwired to the corresponding input

2 x balanced Neutrik® XLR female

1 x Pushb utton (stepping t hrough bank of 4 presets); 1 x 4 LED preset i ndicators

1 x 2-pin P hoenix type MC 1.5/ 2-ST-3.81

peak

230 V

rms

/ +17.8 dBu

rms

**

rms

/ +7 dBu

100 V 8� / Ch pair

232V

/ 65 A

peak

peak

26

M30D and M30D HDSP+ETH

General

Number of channels 2 mono, bridgable per channel pair

Max output power per channel

Max output voltage 135V

AC Mains Power

Power supply Universal, regulated switch mode

Nomin al power requiremen ts AC 115 V - 230 V (factory selec tion), 50/60 Hz

Operating range AC 97 V - 264 V

Inrush current < 28 A

Consumptio n / curre nt draw 230 V 11 5 V

Energy save on 37 W 0.3 A 37 W 0.6 A

Energy save off 530 W 2.54 A 530 W 3.8 A

I/8 of max power @ 8 � 1024 W 6.52 A 1024 W 13.04 A

Thermal

Environmental operating temperature 0° - 45° C / 32° - 113° F

Thermal dissipation Fan, variable speed, temperature controlled front to rear air ow

Idle 126 BT U/ h 32 kcal/h

I/8 of max power @ 4 � 529 BTU/h 133 kc al /h

I/4 of ma x power @ 4 � 935 BTU/h 236 kcal/h

Audio

Gain 32 dB, 30 dB, 28 dB, 26 dB, 24 dB, 22 d B, 20 d B, 18 dB , 14 dB, 4 dB, -∞, user selectable

Frequency response 20 Hz - 20 kHz ±1 dB @ 1 W, 8 �

S/N ratio (amp lier section) > 110 dB (20 Hz - 20 k Hz, A we ighted)

Crosstalk separation >70 dB @ 1 kHz, 4 �

Input sensitivity @ 8 � 2.13 V

Max input level 6 V

Input impedance 10 k� balanced

THD+N / D IM100 IM D < 0.02% (t ypic ally < 0.0 05%) @ 4 �

Slew rate 40 V/µs @ 8 � input filter bypassed

Damping factor > 500 0 @ 100 Hz

***

DSP

A/D converter CS5381, 2 channels, 24 bit / 48 kHz, 120 dB SNR

D/A converter CS4398, 2 c hannels, 24 bit / 48 kHz, 120 dB S NR

Frequency re sponse @ -3 dB 7 Hz - 22 kHz

THD < 0.01% (20 Hz - 20 kHz)

Presets Bank of 4 presets, mana gement and up load via Armonía Pro Audio Suite™

Delay for time alignment 10 ms per output

Crossover lters Butter wor th, Linkw itz- Riley, Besse l, 6 dB/oct to 4 8 dB/oc t

Output equalizer up to 12 biqu ad full y parametric per c hannel: peaking, hi/lo shelving, hi/lo pass, band pass, b and st op, all pass.

Input equalizer up t o 5 biquad lte rs (PE Q, shelving, band pass, b and stop, all p ass)

Limiters Peak limiter, RMS limiter, freque ncy de pendent RM S limiter

Damping control < 120 Hz, range ± 2 Ω

System Delay up to 170 ms for 2 IN /2 OUT or 340 ms for 1 IN/ 2 OUT

Front panel

Indicators 4 LEDs per channel: 3 x green , 1 x red; 2 status LEDs: 1 x green , 1 x yellow

Controls 1 stepped leve l attenuat or pot pe r chan nel; mains sw itch

Maintenance Dust lter foam behind front panels

Rear panel

Controls 1 x link switch , linking analog inputs 1 & 2

Input / Output connectors

Network dat a por t Ethernet

DSP preset selection

Aux voltage

***

***

AC main s IEC C13 16 A connector; AC mains cord with 3 -pin plug 15 A for U S, IEC Schuko 16 A for every other nation

Construction

Dimensions L x W x H: 483 mm x 44.5 mm x 379 mm / 19” x 3. 5” x 14.9”

Weig ht 7.3 kg (16 lb)

* EIAJ Tes t Standar d, 1 kH z, 1% THD, a ll cha nnel s dri ven. * * Ex ter nal high- pass lte r require d. ** * HDSP+ETH version only.

*

single channel mode bridge mode

4 � / Ch 8 � / Ch 70 V

150 0 W 900 W 120 0 W 1500 3000 W

/ 65 A

peak

***

1 x RJ45 with activity LED with 2 rotary address switches

2 x Neutrik® S peakon NL4M D, 2 x Neutrik ® XLR male hardwired to the corresponding input

2 x balanced Neutrik® XLR female

1 x Pushb utton (stepping t hrough bank of 4 presets); 1 x 4 LED preset i ndicators

1 x 2-pin P hoenix type MC 1.5/ 2-ST-3.81

peak

230 V

rms

/ +17.8 dBu

rms

**

rms

/ +8.8 dBu

100 V 8� / Ch pair

270V

/ 65 A

peak

peak

27

M28Q and M28Q HDSP+ETH

General

Number of channels 4 mono, bridgable per channel pair

Max output power per channel

Max output voltage 8 5 V

AC Mains Power

Power supply Universal, regulated switch mode

Nomin al power requiremen ts AC 115 V - 230 V (factory selec tion), 50/60 Hz

Operating range AC 97 V - 264 V

Inrush current < 26 A

Consumptio n / curre nt draw 230 V 11 5 V

Idle 62 W 0. 51 A 64 W 0.6 A

I/8 of max power @ 4 � 580 W 3.74 A 580 W 7.4 8 A

I/4 of ma x power @ 4 � 106 6 W 6.52 A 10 66 W 13.04 A

Thermal

Environmental operating temperature 0° - 45° C / 32° - 113° F

Thermal dissipation Fan, variable speed, temperature controlled front to rear air ow

Idle 212 BT U/h 53 kcal/h

I/8 of max power @ 4 � 785 BTU/h 198 kcal/h

I/4 of ma x power @ 4 � 1249 BTU/h 315 kca l/ h

Audio

Gain 32 dB, 30 dB, 28 dB, 26 dB, 24 dB, 22 d B, 20 d B, 18 dB , 14 dB, 4 dB, -∞, user selectable

Frequency response 20 Hz - 20 kHz ±1 dB @ 1 W, 8 �

S/N ratio (amp lier section) > 111 dB (20 Hz - 20 kHz, A weighted)

Crosstalk separation >70 dB @ 1 kHz, 4 �

Input sensitivity @ 8 � 1.34 V

Max input level 6 V

Input impedance 10 k� balanced

THD+N / D IM100 IM D < 0.02% (t ypic ally < 0.0 05%) @ 4 �

Slew rate 40 V/µs @ 8 � input filter bypassed

Damping factor > 500 0 @ 100 Hz

***

DSP

A/D converter CS5381, 2 channels, 24 bit / 48 kHz, 120 dB SNR

D/A converter CS4398, 2 c hannels, 24 bit / 48 kHz, 120 dB S NR

Frequency re sponse @ -3 dB 7 Hz - 22 kHz

THD < 0.01% (20 Hz - 20 kHz)

Presets Bank of 4 presets, mana gement and up load via Armonía Pro Audio Suite™

Delay for time alignment 10 ms per output

Crossover lters Butter wor th, Linkw itz- Riley, Besse l, 6 dB/oct to 4 8 dB/oc t

Output equalizer up to 12 biqu ad full y parametric per c hannel: peaking, hi/lo shelving, hi/lo pass, band pass, b and st op, all pass.

Input equalizer up t o 5 biquad lte rs (PE Q, shelving, band pass, b and stop, all p ass)

Limiters Peak limiter, RMS limiter, freque ncy de pendent RM S limiter

Damping control < 120 Hz, range ± 2 Ω

System Delay up to 170 ms for 2 IN /2 OUT or 340 ms for 1 IN/ 2 OUT

Front panel

Indicators 4 LEDs per channel: 3 x green , 1 x red; 4 status LEDs: 2 x green , 2 x yellow

Controls 1 stepped leve l attenuat or pot pe r chan nel; mains sw itch

Maintenance Dust lter foam behind front panels

Rear panel

Controls 2 x link switch , linking analog inputs 1&2 and 3&4

Input / Output connectors

Network dat a por t Ethernet

DSP preset selection

Aux voltage

***

***

AC main s IEC C13 16 A connector; AC mains cord with 3 -pin plug 15 A for U S, IEC Schuko 16 A for every other nation

Construction

Dimensions L x W x H: 483 m m x 44. 5 mm x 379 mm / 19” x 3.5” x 14.9 ”

Weig ht 7.3 kg (16 lb)

* EIAJ Tes t Standar d, 1 kH z, 1% THD, a ll cha nnel s dri ven. * ** HDSP+E TH ver sio n only.

*

4 � / Ch 8 � / Ch 8� / Ch pair

700 W 360 W 140 0 W

***

single channel mode bridge mode

peak

/ 65 A

peak

rms

170 V

230 V

/ +4.7 dB u

rms

/ +17.8 dBu

rms

4 x balanced Neutrik® XLR female

4 x Neutrik® S peakon NL4M D

1 x RJ45 with activity LED with 2 rotary address switches

2 x Pushb utton (stepping t hrough bank of 4 presets); 1 x 4 LED preset i ndicators

1 x 2-pin P hoenix type MC 1.5/ 2-ST-3.81

peak

/ 65 A

peak

28

M50Q and M50Q HDSP+ETH

General

Number of channels 4 mono, bridgable per channel pair

Max output power per channel

Max output voltage 135V

AC Mains Power

Power supply Universal, regulated switch mode

Nomin al power requiremen ts AC 115 V - 230 V (factory selec tion), 50/60 Hz

Operating range AC 97 V - 264 V

Inrush current < 28 A

Consumptio n / curre nt draw 230 V 11 5 V

Energy save on 64 W 0.51 A 64 W 0.6 A

Energy save off 905 W 5.8 A 605 W 11 . 6 A

I/8 of max power @ 8 � 1772 W 11.1 A 17 72 W 22. 2 A

Thermal

Environmental operating temperature 0° - 45° C / 32° - 113° F

Thermal dissipation Fan, variable speed, temperature controlled front to rear air ow

Idle 218 BTU /h 55 kcal/h

I/8 of max power @ 4 � 955 BTU/h 241 kcal/ h

I/4 of ma x power @ 4 � 1781 BT U /h 449 kcal/h

Audio

Gain 32 dB, 30 dB, 28 dB, 26 dB, 24 dB, 22 d B, 20 d B, 18 dB , 14 dB, 4 dB, -∞, user selectable

Frequency response 20 Hz - 20 kHz ±1 dB @ 1 W, 8 �

S/N ratio (amp lier section) > 110 dB (20 Hz - 20 k Hz, A we ighted)

Crosstalk separation >70 dB @ 1 kHz, 4 �

Input sensitivity @ 8 � 1.94 V

Max input level 6 V

Input impedance 10 k� balanced

THD+N / D IM100 IM D < 0.02% (t ypic ally < 0.0 05%) @ 4 �

Slew rate 40 V/µs @ 8 � input filter bypassed

Damping factor > 500 0 @ 100 Hz

***

DSP

A/D converter CS5381, 2 channels, 24 bit / 48 kHz, 120 dB SNR

D/A converter CS4398, 2 c hannels, 24 bit / 48 kHz, 120 dB S NR

Frequency re sponse @ -3 dB 7 Hz - 22 kHz

THD < 0.01% (20 Hz - 20 kHz)

Presets Bank of 4 presets, mana gement and up load via Armonía Pro Audio Suite™

Delay for time alignment 10 ms per output

Crossover lters Butter wor th, Linkw itz- Riley, Besse l, 6 dB/oct to 4 8 dB/oc t

Output equalizer up to 12 biqu ad full y parametric per c hannel: peaking, hi/lo shelving, hi/lo pass, band pass, b and st op, all pass.

Input equalizer up t o 5 biquad lte rs (PE Q, shelving, band pass, b and stop, all p ass)

Limiters Peak limiter, RMS limiter, freque ncy de pendent RM S limiter

Damping control < 120 Hz, range ± 2 Ω

System Delay up to 170 ms for 2 IN /2 OUT or 340 ms for 1 IN/ 2 OUT

Front panel

Indicators 4 LEDs per channel: 3 x green , 1 x red; 4 status LEDs: 2 x green , 2 x yellow

Controls 1 stepped leve l attenuat or pot pe r chan nel; mains sw itch

Maintenance Dust lter foam behind front panels

Rear panel

Controls 2 x link switch , linking analog inputs 1&2 and 3&4

Input / Output connectors

Network dat a por t Ethernet

DSP preset selection

Aux voltage

***

***

AC main s IEC C13 16 A connector; AC mains cord with 3 -pin plug 15 A for U S, IEC Schuko 16 A for every other nation

Construction

Dimensions L x W x H: 483 mm x 44.5 mm x 379 mm / 19” x 3. 5” x 14.9”

Weig ht 7.3 kg (16 lb)

* EIAJ Tes t Standar d, 1 kH z, 1% THD, a ll cha nnel s dri ven. * * Ex ter nal high- pass lte r require d. ** * HDSP+ETH version only.

*

single channel mode bridge mode

4 � / Ch 8 � / Ch 70 V

1250 W 750 W 1200 W 125 0 250 0 W

/ 65 A

peak

4 x balanced Neutrik® XLR female

***

1 x RJ45 with activity LED with 2 rotary address switches

4 x Neutrik® S peakon NL4M D

2 x Pushb utton (stepping t hrough bank of 4 presets); 1 x 4 LED preset i ndicators

1 x 2-pin P hoenix type MC 1.5/ 2-ST-3.81

peak

230 V

rms

/ +17.8 dBu

rms

**

rms

/ +8 dBu

100 V 8� / Ch pair

270V

/ 65 A

peak

peak

29

Annex A: IP management and recovery

Through Armonía Pro Audio Suite you can easily set the IP

conguration of your M Series ampliers as long as they are in
DHCP or are congured with a static IP on the same Armonía

subnet (see Section 10.1). It may happen that a static IP in a
different subnet with respect to Armonía has been assigned

to your M Series HDSP+ETH amplier (i.e. 10.0.x.y versus

169.254.x.y): if this is the case Armonía does not recognize the
amplier. You have to reset the IP conguration of your M Series
HDSP+ETH amplier.

In order to reset the IP conguration of your M Series
HDSP+ETH amplier outside the Armonía environment, follow

next instruction.

NOTE: Due to the fact that the Lantronix congurator uses

the Etherner layer no IP set up is necessary.

All the available Lantronix-based devices should appear (see
FIGURE A.4). Please note that devices that are not compatible
with the IP network mask of your network interface should
appear too due to the fact that the Lantronix Confgiurator uses
the Ethernet stack.

WARNING! Make sure that the only connected Lantronix-

based devices are M Series units. Any third-party device

(e.g. printers) that are equipped with a Lantronix unit

are visbile with this software.

Powersoft will be not responsible for any damage suffered by

third-party products equipped with Lantronix hardware.

A.1 Setting an IP policy on Adau based devices

with an external Lantronix tool

M Series HDSP+ETH ampliers come with one rear RJ45 port

for remote device communication, using the IP layer and the UDP

protocol. Factory default settings are DHCP/AutoIP, but a xed IP

policy can also be adopted.

A.1.1 Reset IP conguration

Adau based devices can be set up with a static IP (or any other
IP policy) with an external software programmer provided by
Lantronix™. In order to set up the IP address please follow the
following steps:

1. Download and install the DeviceInstaller™ software from the
Lantronix Web Site on your PC. Please refer to Lantronix
documentation.

2. Connect the device to your PC.

3. Shutdown any M Series client (Armonía or third-party client).

4. Launch the program: it should automatically scan your

network. If not, manually initiate the scan by clicking the
Search button.

5. Select the device whose IP address policy you want to set and
press the button Assign IP.

6. Follow the Device Installer wizard. Any kind of IP policy can

be set.

7. When done, the device network will restart automatically.

Next images display how to set a static IP address.

FIGURE A.2: Select assign specic IP and click next.

FIGURE A.1: Lantronix DeviceInstaller – Press the search button

to star t a (new) search.

FIGURE A.4: Select the device anc click Assign IP.

30

FIGURE A.3: Select IP address and subnet mask compatible with

your PC. Specifying the gateway address is not mandatory. Click next.

Next images display how to set a DHCP IP addressing.

FIGURE A.5: Select Obtain an IP address and click next.

FIGURE A.6: Set DHCP and Auto IP assignment.

31

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50018 Scandicci (FI) Italy

Tel: [phone]
Fax: [phone]

General inquiries: [e-mail]

Sales: [e-mail]

Application & technical support: suppor [e-mail]

Service & maintenance: [e-mail]

www.powersoft-audio.com

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