powersoft Quattrocanali 4804 DSP+D, Quattrocanali 1204, Quattrocanali 2404, Quattrocanali 2404 DSP+D, Quattrocanali 4804 Quick Manual

Keep this manual

for future reference

©2017 Powersoft

Quattrocanali Series

Quattrocanali 4804
Quattrocanali 4804 DSP+D

Quattrocanali 2404
Quattrocanali 2404 DSP+D

Quattrocanali 1204
Quattrocanali 1204 DSP+D

QUICK GUIDE

DO000209.02 R8

powersoft_Quattrocanali_qguide_en_v0.1

Data are subject to change without notice.
For latest update please refer to the English
online version available on www.powersoft-audio.com.

Les données sont sujettes à changement sans préavis.
Pour la dernière mise à jour, s’il vous plaît se référer à la version anglaise
disponible en ligne sur www.powersoft-audio.com.

Esta información está sujeta a cambios sin previo aviso.
Para la última actualización por favor reérase a la versión disponible
en Ingles en nuestro sitio de internet www.powersoft-audio.com.

I dati sono soggetti a cambiamenti senza preavviso.
Per gli aggiornamenti si prega di consultare la versione inglese
disponibile online su www.powersoft-audio.com.

数据如有更改，恕不另行通知。
最新更新，请参考在线的英文版本：http://www.powersoft-audio.com

Данные могут быть изменены без предварительного уведомления.
Для более детальной информации используйте полное руководство на английском языке.
Электронная версия доступна на с айте - http://www.powersoft-audio.com.

Alle Angaben können jederzeit ohne vorherige Ankündigung geändert werden.
Den jeweils jüngsten Versionsstand nden Sie als englischsprachige Ausgabe
auf www.powersoft-audio.com.

Os dados estão sujeitos a alterações sem aviso prévio.
Para obter atualizações, consulte a versão em Inglês
disponível online em www.powersoft-audio.com.

Designed in Italy by Powersoft S.p.A. (via E. Conti, 5 - 50018 Scandicci, Firenze)
Factory 1: MW.FEP S.p.A. (Via Modena, 68 - 40017 San Giovanni in Persiceto, Bologna - Italy)
Factory 2: MW.FEP S.p.A. (Via Mario Stoppani, 23 - 34077 Ronchi dei Legionari, Gorizia - Italy)

Quattrocanali Series

Table of Contents

1. Important safety instructions 10

2. Quattrocanali Series 11

2 : 1. Welcome 11

2 : 2. Unpacking & checking for shipping damage 11

2 : 3. Disposal of the packaging material 11

2 : 4. List of image panels 11

3. Installation 12

3 : 1. Lo cation 12

3 : 2. Cooling 12

3 : 3. Cleaning 12

3 : 4. Precautions regarding installation 12

3 : 5. AC mains supply 13

3 : 6. Switch ON/OFF 13

3 : 7. Energy save 13

3 : 8. Breaker save 13

3 : 9. Remote ON/OFF (standby mode) 13

4. Connections 14

4 : 1. Signal gr ounding 14

4 : 2. Analog audio input connections 14

4 : 2.1. Remote level adjustment 14

4 : 3. Digital audio input connections 14

4 : 3.1. Input selection and Backup policy 14

4 : 4. Ethernet connection s 14

4 : 5. Output connections 14

4 : 5.1. H i-Z 70V/100V operati ons 14

4 : 6. Gain selection 15

4 : 7. Lo-Z 2Ω load operation 15

4 : 8. Diagnostics - GPO - Alarms 15

4 : 8.1. Pilot tone monitoring 15

4 : 8.2. Output load monitorin g 15

5. LED chart 16

5 : 1. LED bars: signal metering 16

5 : 2. LED strip: system status 16

5 : 3. Operating mode LEDs 16

6. Control Panel 16

6 : 1. Self check 16

6 : 1.1. Global fault s 17

6 : 1.2. Channel faults 17

7. Networking 17

7 : 1. IP addr essing 17

7 : 1.1. IP Addressing troubl esh oot ing 17

8. Armonía Pro Audio Suite 18

8 : 1. Signal routing and DSP architecture 18

8 : 2. Purposed work flow 18

9. Warranty and assistance 19

9 : 1. Warr ant y 19

9 : 1.1. Return of Goods 19

9 : 1.2. Repair o r replacemen t 19

9 : 1.3. Cost and responsibility of transport 19

9 : 2. Assist ance 19

9 : 2.1. Drop off at a

Powersoft Authorized Service Centre near you 19

9 : 2.1.1. In-Warra nt y repairs : 19

9 : 2.1.2. Out of Warranty Issues 19

9 : 2.2. Shipping the product to

Powersoft S.p.a. for Factory service centre 19

9 : 2.2.1. Shipment from NON-CE countries 20

9 : 2.3. D.O.A Procedure 20

10. Specifications 21

Table of contents | 3

A

B

4 | Quattrocanali Series

C

D

1. Control panel

2. ON LED and STANDBY LED

3. Armonía callback push button

4. Soft Reset push button

5. Hard Reset push button

6. Self Check

7. Global status LED strip

8. LED panel

9. Channel status LED bars

10. Channel 4 level potentiometer

11. Channel 3 level potentiometer

12. Channel 2 level potentiometer

13. Channel 1 level potentiometer

14. Power push button

15. Port reserved for servicing

A. AC mains connector
B. Air vent
C. Output connector
D. Line input connector
E. Remote levels connector
F. Remote on/off
G. Alarm connector
H. Dante™ port (DSP+D version only)
I. Ethernet port
J. System configuration dip switches
K. CH1, CH2 output configuration dip

switches

L. CH3, CH4 output configuration dip

switches

Panels | 5

1 2 3 4 5 6

789101112131415

A B C D E F

H

G

IKL J

E

INPUT

OUTPUT (single ended)

F

GPO/ALARM

REMOTE ON | REMOTE OFF

REMOTE LEVEL

Phoenix MC 1,5/12-ST-3,81 1803675 Phoenix PC 5/ 8-STF1-7,62 1777891

INPUT (link channel pairs)*

INPUT (Analog Inputs not in use)

* Quattrocanali 4804 without DSP only
Quattrocanali 2404 without DSP only
Quattrocanali 1204 without DSP o nly

Phoenix MC 1,5/12-ST-3,81 1803675

Phoenix MC 1,5/12-ST-3,81 1803675

Phoenix MC 1,5/4-ST-3,81 1803594

OUTPUT (bridged)

G

H

I

J

common

common

common

common

6 | Quattrocanali Series

Ch 4

Ch 3

Ch 2

Ch 1

(or Master)

Ch 4

Ch 1

Ch 4

Ch 3

Ch 2

Ch 3

Ch 2

Ch 3

Ch 2

Ch 1

Ch 4

Ch 1

L

Name Plug

INPUT Phoenix MC 1,5/12-ST-3,81 1803675

OUTPUT Phoenix PC 5/ 8-STF1-7,62 1777891

GPO/ALARM Phoenix MC 1,5/12-ST-3,81 1803675

REMOTE ON|OFF Phoenix MC 1,5/4-ST-3,81 1803594

AC MAINS IEC C19

K

Bill of connectors

Low-Z High-Z 100V 70V HPF @ 35 Hz HPF @ 70 Hz

1

•

2

• •

3

• • •

4

• • •

5

• •

6

• • •

7

• • •

70V

lo-Z

35Hz

HPF Off

100V

hi-Z

70Hz

HPF On

70V

lo-Z

35Hz

HPF Off

100V

hi-Z

70Hz

HPF On

70V

lo-Z

35Hz

HPF Off

100V

hi-Z

70Hz

HPF On

70V

lo-Z

35Hz

HPF Off

100V

hi-Z

70Hz

HPF On

70V

lo-Z

35Hz

HPF Off

100V

hi-Z

70Hz

HPF On

70V

lo-Z

35Hz

HPF Off

100V

hi-Z

70Hz

HPF On

70V

lo-Z

35Hz

HPF Off

100V

hi-Z

70Hz

HPF On

1 2 3 4 5 6 7 8

1 2 3 4 5 6 7 8

1 2 3 4 5 6 7 8

1 2 3 4 5 6 7 8

1 2 3 4 5 6 7 8

1 2 3 4 5 6 7 8

1 2 3 4 5 6 7 8

1

2

5

3

6

4

7

ground

mains

Panels | 7

M

N

O

1 1

1 RU

1 RU

1 RU

Mounting brackets

Soportes de montaje

Supports de xation

1 1

2 2

2 2

3 3

3 3

4 4

4 4

5

1 2 3 4 5 6 7 8

Color code (TIA/EIA-568-B) Pin

ORANGE / WHITE 1

ORANGE 2

GREEN / WHITE 3

BLUE 4

BLUE / WHITE 5

GREEN 6

BROWN / WHITE 7

BROWN 8

RJ45

8 | Quattrocanali Series

English

1

WEEE Directive

EC Declaration Of Conformity

If the time arises to throw away your product, please

recycle all possible component.

This symbol indicates that when the end-user
wishes to discard this product, it must be sent
to separate collection facilities for recovery and
recycling. By separating this product from other
household-type waste, the volume of waste
sent to incinerators or land-lls will be reduced
and natural resources will thus be conserved.

The Waste Electrical and Electronic Equipment Directive
(WEEE Directive) aims to minimise the impact of electrical
and electronic goods on the environment. Powersoft S.p.A.
comply with the Directive 2012/19/EU of the European
Parliament on waste electrical nance the cost of treatment
and recovery of electronic equipment (WEEE) in order to
reduce the amount of WEEE that is being disposed of in
land-ll site.

All of our products are marked with the WEEE symbol;
this indicates that this product must NOT be disposed of
with other waste. Instead it is the user’s responsibility to
dispose of their waste electrical and electronic equipment by
handing it over to an approved reprocessor, or by returning
it to Powersoft S.p.A. for reprocessing. For more information
about where you can send your waste equipment for
recycling, please contact Powersoft S.p.a. or one of your
local distributors.

Manufacturer:

Powersoft S.p.A.
via E. Conti 5
50018 Scandicci (Fi)
Italy

We declare that under our sole responsibility the products:
Model Names: Quattrocanali 4804,

Quattrocanali 4804 DSP+D,
Quattrocanali 2404,
Quattrocanali 2404 DSP+D,
Quattrocanali 1204,
Quattrocanali 1204 DSP+D
Intended use: Professional Audio Amplier

Are in conformity with the provisions of the following EC
Directives, including all amendments, and with national
legislation implementing these directives:

2014/35/EU Low Voltage Directive
2014/30/EU Electromagnetic Compatibility Directive
2011/65/EU RoHs Directive
2014/53/EU Radio Equipment Directive

The following harmonized standards are applied:

EN 55103-1: 2009 /A1: 2012
EN 55103-2: 2009 /IS: 2012
EN 60065: 2014 /AC: 2016

Scandicci,
October 2016

Luca Lastrucci
Managing Director

For compliance questions only: [e-mail]

English | 9

English

Important Safety Instructions

CAUTION

RISK OF ELECTRIC

SHOCK DO NOT OPEN

The Lighting Flash with Arrowhead symbol within an
equilateral triangle, is intended to alert the user to
the presence of uninsulated “dangerous voltages”
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.

EXPLANATIONS OF GRAPHICAL SYMBOLS

The CE-mark indicates the compliance with the
low voltage and electromagnetic compatibility.

Symbol for earth/ground connection.

Symbol indicating that the equipment is for indoor
use only.

Symbol for conformity with Directive 2012/19/EC
of the European Parliament on waste electrical and
electronic equipment (WEEE).

Do not use the unit at altitudes above 2000 m.

Do not use the unit in tropical environment.

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

CONNECTION TO THE MAINS SHALL BE DONE ONLY BY A
ELECTROTECHNICAL SKILLED PERSON ACCORDING THE
NATIONAL REQUIREMENTS OF THE COUNTRIES WHERE THE
UNIT IS SOLD.

USE ONLY BATTERIES, CHARGERS, AND OTHER ACCESSORIES

APPROVED BY POWERSOFT FOR USE WITH THIS DEVICE.
PLEASE REALIZE THAT BATTERIES MIGHT CAUSE DAMAGES
LIKE LEAKING, FIRE OR EXPLODE WHEN MISUSE OR DEFECTIVE.
NEVER MAKE WRONG POLARITY CONNECTION WHEN

CHARGING AND DISCHARGING BATTERY PACKS. ALWAYS
DOUBLE CHECK POLARITY OF BATTERY’S CONNECTOR TO
MAKE SURE RED WIRE TO RED WIRE AND BLACK WIRE TO
BLACK WIRE.

FOR SAFETY REASON, WE USUALLY SHIP BATTERY NOT FULLY

CHARGED: YOU MUST CHARGE THE BATTERY BEFORE USE.

BATTERIES (BATTERY PACK OR BATTERIES INSTALLED) SHALL

NOT BE EXPOSED TO EXCESSIVE HEAT SUCH AS SUNSHINE,

FIRE OR THE LIKE.

WARNING TO PREVENT INJURY, THIS APPARATUS MUST BE

SECURELY ATTACHED TO THE FLOOR/WALL IN ACCORDANCE

WITH THE INSTALLATION INSTRUCTIONS.

Electrical energy can perform many useful functions.
This unit has been engineered and manufactured to ensure
your personal safety. But IMPROPER USE CAN RESULT IN
POTENTIAL ELECTRICAL SHOCK OR FIRE HAZARD.

In order not to defeat the safeguards incorporated into this
product, observe the following basic rules for its installation,
use and service. Please read these “Important Safeguards”

carefully before use.

Important safety instructions

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this equipment near water.

6. Clean only with a dry cloth.

7. Do not block any ventilation openings. Install in
accordance with the manufacturer’s instructions.

8. Do not install near any heat sources such as radiators,
heat registers, stoves, or other apparatus (including
ampliers) that produce heat.

9. 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.

10. Protect the power cord from being walked on or
pinched particularly at plugs, convenience receptacles,
and the point where they exit from the apparatus.

11. Only use attachments/accessories specied by the
manufacturer.

12. Use only with the cart, stand, tripod,
bracket, or table specied by the
manufacturer, or sold with the apparatus.
When a cart is used, use caution when
moving the cart/apparatus combination
to avoid injury from tip-over.

13. Unplug this apparatus during lightning storms or when
unused for long periods of time.

14. Refer all servicing to qualied service personnel.
Servicing is required when the apparatus has been
damaged in any way, such as power-supply cord or
plug is damaged, liquid has been spilled or objects
have fallen into the apparatus, the apparatus has
been exposed to rain or moisture, does not operate
normally, or has been dropped.

15. The apparatus shall be connected to a MAINS socket
outlet with a protective earthing connection

16. Where the MAINS plug or an appropriate coupler is
used as the disconnect device, the disconnect device
shall remain readily operable.

WARNING> TO REDUCE THE RICK OF FIRE OR ELECTRIC SHOCK,
DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE.

DO NOT EXPOSE THIS APPARATUS TO DRIPPING OR SPLASHING
AND THAT NO OBJECTS FILLED WITH LIQUID, SUCH AS VASES,
SHOULD NOT BE PLACED ON THE APPARATUS.

10 | Quattrocanali Series

English

Quattrocanali Series Quick Guide

2

2 : 1.Welcome

Congratulations on buying a Powersoft amplier!

We know you are eager to use your new Quattrocanali
amplier, but please take a moment to read this quick guide
and the safety instructions. In case you have any questions,
please do not hesitate to contact your dealer or Powersoft.

The Quattrocanali Series is specically designed for
installation applications. In just 1 RU, Quattrocanali offers
smaller dimensions, lighter weight and the traditionally
amazing sound quality and reliability of all Powersoft
products.

Quattrocanali Series ampliers implement a high
efciency microprocessor controlled power supply with
built in PFC (Power Factor Correction) that allows awless
worldwide operation with any AC mains voltage in the range
85-275 V

AC

tolerant to peak up to 400 V. The patented SRM
(Smart Rails Management) technology allows to maximize
the efciency of the system and drastically reduce power
consumption at any load and usage condition.

A secondary high efcient power supply is present to
keep the system responsive at any operating condition, so
that system check and monitoring can be performed even
in stand-by and deep-sleep modes.

Quattrocanali Series is designed to work with lo-Z
(from 2 Ω) and with 70V/100V distributed lines: any mixed
conguration of low and high impedance output loads can
be realized, making the Quattrocanali Series suitable to all
application in installed sound reinforcement system.

DSP+D versions of the Quattrocanali 4804 and 2404
extend system performance with the support to Dante™
digital audio networking architecture and the on board high­end signal processing.

4804 2404 120 4

8 Ω 1200 W 600 W 300 W

4 Ω 1200 W 600 W 300 W

2 Ω 1500 W 800 W 400 W

Hi-Z 70 V 1200 W 600 W 300 W

Hi-Z 100 V 1200 W 600 W 300 W

2 : 2.Unpacking & checking for shipping damage

Your Powersoft amplier has been completely tested and
inspected before leaving the factory. Carefully inspect the
shipping package before opening it, and then immediately
inspect your new product. If you nd any damage notify the
shipping company or retailer immediately.

The box contains the following:

 1x Quattrocanali Series amplier.
 1x Phoenix MC 1,5/ 4-ST-3,81 - 1803594 plug
 2x Phoenix MC 1,5/12-ST-3,81 - 1803675 plug
 1x Phoenix PC 5/ 8-STF1-7,62 - 1777891 plug
 1x IEC power cord
 1x quick guide

2 : 3.Disposal of the packaging material

The protective transport packaging has been selected
from materials which are environmentally friendly for
disposal and can normally be recycled.

Rather than just throwing these materials away,
please ensure they are offered for recycling.

2 : 4.List of image panels

A. Mechanical drawings: all dimensions in millimeters
B. Front panel: how to access it
C. Quattrocanali Series: Front panel description
D. Quattrocanali Series: Rear panel description
E. Quattrocanali Series DSP+D: Front panel description
F. Quattrocanali Series DSP+D: Rear panel description
G. Input connector: wiring (single ended mode)
H. Output connector: wiring (single ended mode)
I. Alarms connector: wiring
J. Input/Output connectors: wiring (bridged mode)
K. Output load DIP switch congurations
L. RJ45 Ethernet wiring (Color code TIA/EIA-568-B)
M. Air ow and mounting brackets
N. Rack mounting constraints
O. Regulatory information

English | 11

English

Installation

3

3 : 1.Location

Quattrocanali Series ampliers are meant to be installed into
rack cabinets. In order to limit the risk of mechanical damages,
the ampliers must be secured to the rack using both frontal
and rear mounting brackets. We recommend to use eight M6 or
12-24 UNC-2B screws for threaded holes or cage nuts.

The AC mains connector of the units must be connected
to a proper circuit breaker.

Install this amplier as far as possible from radio tuners
and TV sets. An amplier installed in close proximity of such
equipment may experience noise or generic performance
degradation. 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.

3 : 2.Cooling

Install the amplier in a well-ventilated location: 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.

All Powersoft ampliers implement a forced-air
cooling system to maintain low and constant operating
temperatures. Drawn by the internal fans, air enters from
the front panel and is forced over all components, exiting at
the back of the amplier.

The amplier’s cooling system features “intelligent”
variable-speed DC fans which are controlled by the heat sink
temperature sensing circuits: the fans speed will increase
only when the temperature detected by the sensors rises
over carefully predetermined values. This ensures that fan
noise and internal dust accumulation are kept to a minimum.

Should however the amplier be subject to an extreme
thermal load, the fans 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.

Quattrocanali 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 observed: in case
a rack with closed back panels is used, leave one rack unit
empty every four to guarantee adequate air ow (see Panel

N, p. 8).

3 : 3.Cleaning

Always use a dry cloth for cleaning the chassis and the
front panel. Air lter cleaning should be scheduled according
to the dust levels in the amplier’s operating environment.

Disconnect the AC mains source before

attempting to clean any part of the amplifier

In order to clean the vent lters you need to remove the
front cover: never attempt to open any other part of the unit.

1. Firmly grip the outermost silver panel and pull it outwards
(seePanel B, p. 4).

2. When the front panel is removed, the air lter (looking
like a shiny black plastic sponge) will be exposed.

You may use compressed air to remove the dust from
lters, or wash it with clean water: in the latter case ensure
that the lter is dry prior to reassembly.

3 : 4.Precautions regarding installation

WARNING: TO PREVENT FIRE OR ELECTRIC SHOCK

 This device must be powered exclusively by earth

connected mains sockets in electrical networks
compliant to the IEC 364 or similar rules.

 Install the unit into a rack cabinet.

 A sectioning breaker between the mains connections

and the amplier should be installed inside the rack
cabinet.

 Properly t the AC mains plug to the amplier inlet.

 Before powering this amplier, verify that the correct

voltage rating is being used.

 Verify that your mains connection is capable of

satisfying the power ratings of the device.

 Do not use this amplier if the electrical power cord is

frayed or broken.

 Output terminals are hazardous: wiring connection to

these terminals require installation by an instructed
person and the use of ready-made leads.

 Take care to lock the output terminal before switching

the device on.

 To avoid electrical shock, do not touch any exposed

speaker wiring while the amplier is operating.

 Do not spill water or other liquids into or on the amplier.

 No naked ame sources such as lighted candles

should be placed on the amplier.

 Do not remove the cover. Failing to do so will expose

you to potentially dangerous voltage.

 The manufacturer cannot be held responsible for

damages caused to persons, things or data due to an
improper or missing ground connection.

 Contact the authorized service center for ordinary and

extraordinary maintenance.

It is absolutely necessary to verify these fundamental

requirement of safety and, in case of doubt, require

an accurate check by qualified personnel.

12 | Quattrocanali Series

English

This device must be powered exclusively by
earth connected mains sockets in electrical

networks compliant to the IEC 364 or similar rules.

Powersoft suggests to plug the

Quattrocanali to a 16 A rating,

C or D curve, 10 kA sectioning breaker.

AC mains connections must be performed

only by professional or qualified personnel

according to local electrical authorities guidelines.

3 : 5.AC mains supply

Quattrocanali Series ampliers implement an universal
switching mode power supply with power factor correction
operating in the range from 100 V

AC

up to 240 VAC ±10%.

AC mains connection is in the rear panel through the IEC
C20 inlet: the approved power cord is provided (seePanel

K, p. 7).

3 : 6.Switch ON/OFF

Once properly powered (power cord inserted, sectioning
breaker closed), the system can be either ON or in STANDBY
mode depending on its state at latest power off.

In order to toggle the amplier ON and STANDBY
keep pressed the power button for 3 seconds (see Panel

C, p. 5). Please consider that the operating condition

can be modied by the REMOTE ON and REMOTE OFF
conguration (see §3 : 9.Remote ON/OFF (standby mode)).

3 : 7.Energy save

The Smart Rails Management technology implemented in
the power supply u nit allows to reduce the power cons umption
when the input signal falls under a dened threshold.

Signal activity is monitored on the input section of the
amplier so that the system can resume normal operation
in a matter of milliseconds when an incoming signal is
detected on the channels. Once switched on, Energy Save
is active on each channel independently.

If the signal is missing for more than 30 minutes on all
channels, the auto standby is applied and the main PSU
is turned off to further save energy*. Normal operation is
resumed in a matter of milliseconds when an incoming
signal is detected on the channels.

In order to activate the Energy Save feature, locate the
NRG SAVE switch on the rear panel (see Panel D, p. 5)
and set it ON (high).

TAB . 1 shows the power consumption in idle mode when

the Energy save is either enabled or disabled.

Energy

Save

115 V

AC

mains 230 VAC mains

Current

Real

Power

Apparent

Power

Current

Real

Power

Apparent

Power

4804

OFF

0.45 A 32.3 W 74 VA 0.35 A 32.4 W 142 VA

AUTOSTBY

0.45 A 19 W 52 VA 0.46 A 20 W 10 6 VA

4804

DSP+ D

OFF

0.5 A 33.6 W 76 VA 0.35 A 33.7 W 145 VA

AUTOSTBY

0.47 A 20 W 55 VA 0.57 A 21 W 131 VA

2404

OFF

0.40 A 31.4 W 69 VA 0.28 A 31.6 W 138 VA

AUTOSTBY

0.45 A 19 W 52 VA 0.45 A 19 W 104 VA

2404

DSP+ D

OFF

0.45 A 32.7 W 70 VA 0.29 A 31.8 W 140 VA

AUTOSTBY

0.46 A 20 W 5 3 VA 0.46 A 20 W 106 VA

1204

OFF

0.40 A 31.4 W 69 VA 0.28 A 31.6 W 138 VA

AUTOSTBY

0.45 A 19 W 52 VA 0.45 A 19 W 104 VA

1204

DSP+ D

OFF

0.45 A 33.6 W 70 VA 0.29 A 32.8 W 140 VA

AUTOSTBY

0.46 A 20 W 5 3 VA 0.46 A 20 W 106 VA

TAB. 1: Idle consumption.

3 : 8.Breaker save

In case the power grid is unable to provide enough
current to continuously drive the loads, or when the number
of attached amplier to the same AC mains is such that one
can reach the critical power absorption from the line, it is
possible to activate the Breaker Save feature.

When activated, the Breaker Save feature reduces
(halves) the maximum continuous current absorption from
the mains. This slightly reects on the overall performance
of the system reducing the available output power.

In order to activate the Breaker Save feature, locate the
BRK SAVE switch on the rear panel (see Panel D, p. 5)
and set it ON (high).

3 : 9.Remote ON/OFF (standby mode)

Remote ON/OFF is available through the dedicated
terminals on the rear panel (see Panel C, p. 5).

Both terminals respond to the differential voltage
between the contacts: a voltage difference in the range
5 V

DC

- 24 VDC triggers the control. Any voltage exceeding

28V

DC

may damage the input circuitry.

The couple of terminals act depending on the actual
state of the amplier, as shown in .

REMOTE ON REMOTE OFF AM PL IF IE R S TATE

Vdiff ≥ 5V Any Force Turn ON

Vdiff < 3V Vdiff ≥ 5V Force Turn OFF

Vdiff < 3V Vdiff < 3V

No Change

(Keep either standby

or in current state)

In order to remotely toggle between standard operating
and standby modes, the AC mains power must be
connected.

*Time out time is selectable via Armonìa in DSP+D Versions

FIG. 1: Keep pressed the power pushbutton

to toggle ON/STANDBY the amplifier.

English | 13

English

Connections

4

Make sure the external breaker is off before attempting

to make any input or output connections.

By using good quality input and output 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.

4 : 1.Signal grounding

There is no gr ound switch or terminal on the Qu attrocanali
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 Protective Earth

wire.

4 : 2.Analog audio input connections

Analog input connections are made via the Phoenix MC
1,5/12-ST-3,81 1803675 connector. Signal polarity of analog
input connections is shown in Panel E, p. 6.

Short the Positive (+) and Negative (-) to the Ground
Input terminal on the unused Input channel(s) in order to
avoid picking up noise.

4 : 2.1. Remote level adjustment

The level of each channel of the Quattrocanali Series
ampliers can be remotely adjusted by means of a linear 10
kΩ potentiometer connected to the input LEVEL connector
(see Panel D, p. 5) through a Phoenix MC 1,5/12-ST-
3,81 1803675 plug. The right polarity for the connections is
shown in Panel G, p. 6.

When the CH1 MSTR switch is in the OFF position (low)
the remote level potentiometers work independently on
each separate channel.

When the CH1 MSTR switch is in the ON position (high)
the remote level potentiometer of the channel 1 acts as a
master level, controlling the volume of all the four channels.

The remote level controls are in series with the level
adjustment knobs in the front panel.

4 : 3.Digital audio input connections

The Dante equipped models of Quattrocanali DSP+D
accepts four input streams from the Dante connection
through the Dante port. Cabling must comply to TIA/EIA­568-B and adopt the T568B scheme pinout, as shown in

Panel O, p. 8.

In order to implement a Dante network, a computer
running Dante Controller have to be used. Dante Controller
is a software application that manages devices on the
network. Quattrocanali DSP+D ampliers are automatically

discovered and displayed in Dante Controller with the default
identier

MODELNAME-SERIAL

(e.g. Quattroca nali4804-71520).

4 : 3.1. Input selection and Backup policy

In Quattrocanali DSP+D ampliers it is possible to select
among two input signal sources per channel: analog and Dante
streams. The Armonía Pro Audio Suite software provides an
interface to select the proper input source, manage input
gain and delay of the analog and digital sources, in order to
compensate transmission latency and levels.

Furthermore Quattrocanali DSP+D ampliers implement
a backup policy aimed to improve reliability against signal
fault. By assigning a bus priority to the two different input
sources per channel, the system is able to automatically
switch to a reliable input connection in case of signal drop
or pilot tone mismatch.

4 : 4.Ethernet connections

The port labeled Ethernet is designed to remotely
control the Quattrocanali DSP+D via an Ethernet connection
through a personal computer and Powersoft Armonía Pro
Audio Suite software. A complete interface for signal routing,
sound shaping and performance ne tuning is provided.

Powersoft recommend the use of Ethernet Cat5 straight
through – patch – cables with pin/pair assignments TIA/EIA­568-B, i.e. T568B, as shown in Panel O, p. 8.

4 : 5.Output connections

CLASS3

CLAS S 3 WIRING

Output terminals are hazardous: wiring connection to

these terminals require installation by an instructed
person and the use of ready made leads. Take care to secure
the output terminal before switching the device on.

Output connections are made via the Phoenix
PC 5/ 8-STF1-7,62 1777891: single-ended wirings for lo-Z
loudspeaker and Hi-Z distributed lines connections are
shown in Panel I, p. 6. Bridge-tied connection of lo-Z
loudspeaker is supported on adjacent channel pairs 1-2,
3-4, 5-6 and 7-8; inputs must be physically paralleled as
shown in Panel J, p. 6.

Any mixed conguration of low and high impedance
output loads can be made: in order to set the load
conguration, each channel is provided by four DIP
switches (refer to Panel L, p. 7). Quattrocanali Series is
congured to drive Lo-Z loads by factory default.

4 : 5.1. Hi-Z 70V/100V operations

Any channel of an Quattrocanali Series amplier can
drive 70V/100V (Hi-Z) distributed line of loudspeakers. In
order to connect any channel’s output to a 70V/100V line,
the rear panel DIP switch corresponding to the channel
must be correctly set as indicated in Panel L, p. 7.

Powersoft recommends to use the built-in HPF (High
Pass Filter) when the amplier is set to drive a distributed
line to prevent loudspeaker transformer saturation which
can considerably degrade sound performance. The HPF
can be activated by means of the DIP switch corresponding
to the channel (see Panel L, p. 7), two cutting frequency
are available 35 Hz and 70 Hz.

14 | Quattrocanali Series

English

4 : 6.Gain selection

The Quattrocanali Series ampliers can operate with
different gain applied to the input signal. This feature is
designed to match the voltage of the input signal, i.e. allowing
to obtain the same output power at different input levels.

GAIN

Input sensitivity @ 8Ω load

Vpeak Vrms dBu

4804

26 6,92 4,9 16,0
29 4,90 3,47 13,0
32 3,46 2,45 10,0
35 2,45 1,74 7,0

2404

26 4,89 3,46 13 ,0
29 3,48 2,46 10,0
32 2,45 1,74 7,0
35 1,74 1, 23 4,0

120 4

26 3,46 2,45 10,0
29 2,46 1,74 7,0
32 1,72 1,23 4,0
35 1,23 0,87 1,0

TAB. 2: Input sensitivity.

A proper combination of the position of two GAIN
switches on the rear panel sets the operating gain of the
amplier (see TAB . 3)

26 dB 29 dB 32 dB 35 dB

1 2 34 5 6 7 8

1 2 34 5 6 7 8

1 2 34 5 6 7 8

1 2 34 5 6 7 8

1 2 34 5 6 7 8

1 2 34 5 6 7 8

1 2 34 5 6 7 8

1 2 34 5 6 7 8

1 2 34 5 6 7 8

1 2 34 5 6 7 8

1 2 34 5 6 7 8

1 2 34 5 6 7 8

1 2 34 5 6 7 8

1 2 34 5 6 7 8

1 2 34 5 6 7 8

1 2 34 5 6 7 8

TAB. 3: Setting the GAIN.

4 : 7.Lo-Z 2Ω load operation

The Quattrocanali Series ampliers are optimized for
working with 4Ω output loads but a special configuration
allows to connect low loads down to 2Ω (e.g. in the
configuration with three paralleled 8Ω loudspeakers that
provides 2.67Ω load to the output channel).

The 2Ω switch (see Panel D, p. 5) allows to activate
on all output channels set to match low impedance (i.e. in
Lo-Z configuration) an operating condition that optimizes the
performance with very low loads, by limiting the maximum
output voltage to 85V

peak

per channel.

For optimal 2Ω performance, it is recommended to
select LowZ mode for all the amplifier’s channels

4 : 8.Diagnostics - GPO - Alarms

The Quattrocanali’s GPO – general purpose output –
system implements triggering signals to broadcast alarms.

Quattrocanali Series provides a pair of paralleled general
purpose output connections per channel: one Normally
Open

NO and one Normally Closed NC.

The connections are available on the back panel via the
12-pin Phoenix MC 1.5/12-ST-3.81 1803675 connector: see

Panel F, p. 6 for wirings.

These contacts are used to report potentially dangerous
faults or generally unsafe operation conditions by toggling
alarm switches relative to the following events, and any fault
preventing the normal operation of an output channel:

 No AC mains (i.e. system shutdown);
 Thermal stress: the system temperature is too high

and the thermal protection is engaged;

 Short circuit in output wiring: either the loudspeaker or

the line is in short;

 Amplier is in Standby

Quattrocanali DSP+D features further monitoring on
pilot tone and output load: the monitoring and diagnostic
interface is accessible in Armonía Pro Audio Suite software
through the Diagnostic tab in the output ways panel of the
selected channel of the Quattrocanali DSP+D amplier.

4 : 8.1. Pilot tone monitoring

Thanks to the built-in DSP, the Quattrocanali DSP+D
ampliers implement pilot tone detection and alert.
Detecting and alerting features are available for both input
and output pilot tones on each channel.

The detection of a mismatch in the input pilot tone
parameters (frequency and voltage level) can be used to
trigger the backup policy and activate an alert through the
general purpose output switch.

The output pilot tone detection relies on an external
signal passing through the amplier or the internal post DSP
pilot tone generator; in both cases any mismatch between
the detected signal and the set thresholds triggers the
general purpose output switches.

4 : 8.2. Output load monitoring

Through the Armonía Pro Audio Suite software it is
possible to set the thresholds on the load impedance, at
given frequency, that trigger the general purpose output of
any channel in Quattrocanali DSP+D ampliers.

FIG. 2: Diagnostic panel in Armonía Pro Audio Suite.

English | 15

English

LED chart

5

The front LED panel of the Quattrocanali includes four
LED bars for output signal metering and one LED strip with
status indicators. Two operating mode LEDs are located on
the control panel under the left hand cover.

5 : 1.LED bars: signal metering

The four left hand LED bars provide signal metering and
channel status for channels 1 to 4 left to right.

Color

Signal

metering

Warnings

Lighting Description

ORANGE

Clipping

*DSP+D User L imiter

— —

YELLOW

-6dB SOLID ON

Thermal warning

Thermal protection

engaged

GREEN

-12d B — —

GREEN

-24dB — —

GREEN

-60dB

SOLID ON Signal presence

BLINKING Channel muted

GREEN

—

SOLID ON Channel ready

FLASHING Auto Standby

RED

—

SOLID ON Channel fault

1

FLASHING User Diagnostic Fault

1

Red LED lights on in case of any kind of channel fault that prevents the normal

channe l operating; at the same time the rear corresponding GPO tog gles the
contac ts NO into NC and NC into NO.

5 : 3.Operating mode LEDs

The operating mode LEDs are located on the control
panel. They state the operating mode when the system
either is on or in standby mode.

Color Name

Operating mode

Standby Power on

GREEN

POWER ON — SOLID ON

ORANGE

STA NDBY SOLID ON —

ORANGE

AUTO STANDBY BLINKING —

ORANGE

ERROR CODE BLINK COUNTER —

5 : 2.LED strip: system status

The right hand LED strip on the LED panel provides

system status informations.

Color Name

Warnings

Lighting Description

ORANGE

LIMIT

FLASHING Breaker Save Enabled

SOLID ON

Breaker Save limiting

power draw

YELLOW

TEMP SOLID ON

Thermal warning

Thermal protection

engaged

ORANGE

CHECK

SOLID ON System self checking

BLINKING Self check completed

FAST BLINKING Self Check Unavailable

GREEN

REMOTE

SOLID ON

Connec ted to

Armonía or 3rd Party

Remote Control

FLASHING

Preset Changed /

Disconnected

GREEN

POWER ON

SOLID ON System ready

OFF System of f

GREEN

MAINS

SOLID ON

AC mains voltage

within the operating

range

OFF Undervoltage

FLASHING

Over/Undervoltage

Warning

FAST BLINKING Overvoltage

SLOW BLINKING Mains FUSES blown

RED

ALARM SOLID ON

PSU fault

1

OR Critical Faults

1

Red LED lights on in case of any kind of PSU fault that prevents normal

operating.

Control Panel

6

The control panel is located under the left hand metal cover.
See Panel B, p. 4 on how to access the control panel.

The control panel contains two LEDs (for the description
see §5 : 3.Opera ting mod e LEDs) and the following controls.

The push-buttons are disabled when connected to Armonìa.

Label Type Action Description

POWER

Pushbutton

keep pressed for

3 seconds

Tog gl e

system ready/standby mode

CALL

Pushbutton press

Highlight the amplier in the

Armonía workspace

SOFT

RESET

1

Pushbutton

keep pressed for

3 seconds

Reset network parameters

to factory default

HARD

RESET

1

Pushbutton

keep pressed for

3 seconds

Reboot the system

CHECK

2

Pushbutton

keep pressed for

3 seconds

Start the self-checking

procedure*

CH1

3

Potentiometer

turn

counter-clockwise

Attenuate the output l evel of

the signal on channel 1

CH2

3

Potentiometer

turn

counter-clockwise

Attenuate the output l evel of

the signal on channel 2

CH3

3

Potentiometer

turn

counter-clockwise

Attenuate the output l evel of

the signal on channel 3

CH4

3

Potentiometer

turn

counter-clockwise

Attenuate the output l evel of

the signal on channel 4

1. Keep pressed both the SOFT RESET button and the HARD

RESET button for at least 3 seconds to completely reset the
amplier to its factory default conguration (any preset stored in
the internal memory will be lost and replaced with a at preset).

2. For further information see §6 : 1. Self check.

3. The potentiometer is in series with the remote level control (see

§4 : 2.1. Remote level adjustment) so it can be used to limit the

output volume regardless to any remote adjustment.

* Press again to resume normal operations

6 : 1.Self check

The self check procedure tests the amplier status and
reports the user in case of failures.

It is highly recommended to unplug the

output connectors before proceeding

with the self check procedure

The testing signals might cause

loudspeaker impairments.

After few minutes, at the end of the self check procedure,
a combination of lighten LED in the LED panel provide
information about the amplier status.

In order to exit the self check test and resume normal
operations, press once the self check push button.

16 | Quattrocanali Series

English

Quattrocanali ampliers support star network topology
via the Ethernet port and Dante networking via the Dante
port only.

The Ethernet port is designed to allow the remote
control of the amplier through Armonía Pro Audio Suite
and third party software. The Dante port is reserved to
Dante networking.

7 : 1.IP addressing

Factory default network settings are DHCP/AutoIP,
inorder for the amplier to self-congure when connected to
an existing LAN or PC. Fixed IP policy can also be adopted
and congured through Armonía Pro Audio Suite.

If a DHCP server is not active within the network,
the amplier platform initiates a stateless address
auto-conguration (i.e. Zero-conguration networking
methodology – Zeroconf): it self assigns a local numeric
network address (of the type 169.254.x.y – 172.31.*.* for
the secondary network if present – with a subnet mask

255.255.0.0) and automatically distributes and resolves the
host names of the networking devices. For setting a static
IP address please refer to the Armonía Pro Audio Suite user
guide.

7 : 1.1. IP Addressing troubleshooting

When connecting the Quattrocanali to a network
environment it may happen that Armonía Pro Audio Suite
does not discover or import the amplier.

Usually this is a problem of IP addressing: both Armonia
and the Quattrocanali must belong to the same subnet. If a
DHCP server is present on the network and a Quattrocanali
amplier is in AUTO IP, networking may become unstable.

As a rule of thumb, turn the DHCP server

on before connecting the amplifiers.

IP addressing of a Quattrocanali amplier is established
during the bootstrap: when the amplier discovers a DHCP
server on the network during the startup, it negotiates the
networking parameters. If the Quattrocanali does not reveal
a DHCP server on the network during the startup, it set itself
in AUTO IP mode.

Networking

7

6 : 1.2. Channel faults

If self check cannot be started because of a fault, the
check LED will blink fast, whilst a reassuring slow blink is an
indication of a completed self check procedure.

FIG. 3:
System OK.

FIG. 5:
AC Mains voltage
out of range (over/
under voltage)

FIG. 6:
PSU temperature
out of range

FIG. 7:
Fan Error

FIG. 8:
Channel#
Temperature
out of range

FIG. 9:
Channel#
Output Waveform
non-conformity

6 : 1.1. Global faults

FIG. 4:
Power supply fault

English | 17

English

Armonía
Pro Audio Suite

Armonía Pro Audio Suite is the default conguring
interface that allows system setting and customization of
the Quattrocanali DSP+D ampliers.

Armonía can be installed on a PC running Windows
(XP SP3 and higher). Freely download Armonía Pro Audio
Suite from the Armonía forum:

http://www.powersoft-audio.com/en/armonia-forum

Quattrocanali DSP+D ampliers can connect to the
PC running Armonía through a Fast Ethernet connection.
In order to start remote operation the device must be
discovered and imported into the Armonía Workspace. Click
on the Discover button in the Remote entities window, or
select it from the Model list and drag it into the Armonía
Workspace.

The callback button (see Panel C, p. 5) allows you
to highlight the presence of the amplier into the Armonía
Workspace.

Once connected to Armonía Pro Audio Suite a double
click on the amplier icon in the Workspace will open the
amplier dashboard. Here it is possible to access and
congure all the features of the Quattrocanali DSP+D.

8

8 : 1.Signal routing and DSP architecture

Signal processing on Powersoft Quattrocanali DSP+D
ampliers accomplishes multiple functions that affect
the audio signal before power amplication; the main
adjustments include gain, polarity, delay, limiting and signal
equalization; some processing are related only to particular
stages, such as limiting and damping control that are
implemented on the output section only, or input priority
assignment available in the input section.

The processing architecture is composed of six sections:

 Input source selection. The input section allows you

to manage input gain and delay of analog and digital
sources, in order to compensate transmission latency
and levels. Furthermore the Quattrocanali DSP+D
implement a backup policy aimed to improve reliability
against signal fault.

 Matrix. The innovative routing engine of Quattrocanali

DSP+D allows any input to be routed to any output. The
Matrix implements a non-boolean rooting architecture
allowing free channel assignment and level adjustment.

 Advanced processing. This allows you to optimize

levels and shape the sound of the input signals. Gain
and polarity adjustment, asymmetric raised-cosine full
parametric lters, delay and mute are available on each
channel routed to the speaker section.

 Speaker equalization. Designed to manage the

conguration presets for multi-way systems, it
implements FIR and IIR full parametric lters.

 Speaker routing. Once properly grouped, the output

channels are presented to the matrix as speakers –
asingle row representing a speaker (actually group of
ways) – allowing a high grade of granularity in signal
processing.

 Output processing. This allows ne tuning of output

signals, aiming to optimize the power delivered and the
performance of the single way out. It provides gain and
polarity adjustment, IIR and FIR full parametric lters,
delay, mute, limiting and damping control on each
output channel.

8 : 2.Purposed workflow

Once the loudspeaker layout has been dened, we
suggest a bottom-up conguration procedure that starts
from the conguration of the transducers layout and goes
up toward the input selection and the denition of the
backup policy.

Shortly, the main steps to follow are:

1. Set Lo-Z and Hi-Z loads and lters on output channels.

2. Load the loudspeaker presets or manually congure the
loudspeaker layout (grouping output channels, limiting,
speaker processing, etc.).

3. Dene the routing path and the levels of the signals
from the input channels to the active output channels
(matrix).

4. Select the signal source from the input connections and
dene the backup policy (input source selection).

5. Dene GPO assignment and alarms thresholds.

Through Armonía Pro Audio Suite software it is possible
to set the thresholds on the load impedance, at given
frequency, that trigger the general purpose output of any
channel in Quattrocanali DSP+D ampliers (see FIG. 5).

FIG. 11: GPO: System monitoring interface.

8 : 3.Live Impedance

FIG. 10: Armonía Pro Audio Suite.

18 | Quattrocanali Series

English

9

Warranty and
assistance

9 : 1.Warranty

Powersoft guarantees its manufactured products to be
free from defective components and factory workmanship for
a period of time starting from the date of purchase printed on
Powersoft’s (or any of its Authorized Dealer’s) invoice to the
end customer. The standard warranty period are:

48 months for racks ampliers.
12 month for amplier modules.

All warranty repairs and retrots must be performed at
Powersoft 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
perform warranty services provided that the product is not
damaged during transportation.

9 : 1.1. Return of Goods

Goods can be returned to Powersoft only after 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.

9 : 1.2. Repair or replacement

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

9 : 1.3. 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

9 : 2.Assistance

There are no user-serviceable parts in the amplier. Refer
to qualied technical personnel for servicing. 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 Powersoft Technical Service
department to obtain the location of the nearest Authorized
Service Center.

Powersoft offers two options for product repair:

 Drop off at a Powersoft Authorized Service Centre near you.
 Ship the product to Powersoft S.p.a. for Factory

Service.

9 : 2.1. Drop off at a
Powersoft Authorized Service Centre near you

 Find a Powersoft Authorized Service Centre from the list.
 Take a note of each serial number of the units to be

returned.

 Completely ll out the defect report form for each unit to

be returned.

 Send the completed defect report form to the following

e-mail addresses [e-mail]
(Customer care manager) [e-mail] (Service
Team).

After having applied the aforementioned procedure, the
local service manager will provide the shipment details and
the product’s warranty status.

9 : 2.1.1. In-Warranty repairs:

The service repair will be free of charge for the customer.

9 : 2.1.2. Out of Warranty Issues

 The service costs are calculated on the local rate

applied from the service centre and supervised by the
Powersoft HQ

 The repair time has been set from the Powersoft HQ and

it’s equally applied in all the authorized service centre

 The unit will be evaluated by a technician, and the

service centre will provide the customer with the
estimated costs. The repair will only take place once
the customer has approved the estimated costs.
The customer will pay the shipping charges once the
repair has been completed, depending on the countries’
standard procedures.

For any enquiries please contact Powersoft Customer care
[e-mail]

The row of potentiometers in the front panel behave
differently on non-DSP ampliers and Quattrocanali DSP+D
ampliers:

 In non-DSP Quattrocanali ampliers, the potentiometers

act as trimmers on the input level (see Panel C, p.

4): the input signal is muted when the trimmer is

completely turned counterclockwise; on the other hand,
no attenuation is applied when the trimmer is completely
turned clockwise.

 In Quattrocanali DSP+D the potentiometers attenuate

the speakers gain (see Panel E, p. 6): they modify
the overall gain applied to the group of ways belonging
to the selected speaker. The amount of gain attenuation
(External gain) is shown in Armonía Pro Audio Suite.

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).

English | 19

English

9 : 2.2. Shipping the product to
Powersoft S.p.a. for Factory service centre

 Take a note of each serial number of the units to be

returned.

 Fill out completely the defect report form for each unit

to be returned.

 Send the completed defect report form to the following

email address:
[e-mail]

After having applied the aforementioned procedure, you
will receive an Email containing the Return Merchandise
Authorization (RMA form) for each unit returned.

All returned Powersoft units must be shipped to the
following address:

Powersoft spa

Factory service centre

Via Enrico Conti N. 13 – 15

50018 Scandicci (FI)

Italy

Phone [phone] Option 2

Email: [e-mail]

Contact Powersoft Factory service centre

Phone [phone] Option 2

Email: [e-mail]

Phone Support Hours

Monday - Friday 8.30 AM to 5.30 PM Europe time

9 : 2.2.1. Shipment from NON-CE countries

When shipping from non-CE (European Community)
countries , follow the proce dure descr ibed in the TEMP ORARY
EXPORTATION / IMPORTATION PROCEDURE.

Important Note:

If the RMA# is not displayed anywhere on the outside of
the box, the shipment will be rejected and sent back to the
customer.

If the returned goods from NON-CE countries do not
follow the aforementioned guidelines, the package will be
rejected and sent back to the customer.

9 : 2.3. D.O.A. Procedure

In case of a D.O.A. (Dead On Arrival) product, we kindly
request the customer to contact the local dealer where
the product was purchased or the Factory service centre,
mentioning the serial number of the faulty unit.

D.O.A. unit will be replaced completely without any
additional charges!

Important Note: Do not tamper with or operate the
D.O.A. unit in any ways in order to avoid any warranty issue.

Powersoft S.p.a declines any D.O.A warranty service if
the returned unit has been tampered with or misused by the
customer.

20 | Quattrocanali Series

Specifications

Quattrocanali 4804

Networking

Standards compliance auto-sensing Fast Ethernet (IEEE 80 2.3u, 100 Mbit /s)

Supported topologies Star

Remote inter face Armonía Pro Audio Suite™

DSP*

AD conver ters

24 Bit Tandem™ @ 48 kHz

125 dB-A Dyna mic Range - 0.005 % THD+N

DA conver ters

24 Bit Tandem™ @ 48 kHz

117 dB-A Dynamic Range - 0.0 03 % THD+N

Sample rate converter

24 Bit @ 44.1 kHz to 192 kHz

140 dB Dynamic Range - 0.00 01 % THD+N

Internal precision 32 bit oating point

Latency 2.5 ms xed latency architecture

Memory/Presets 128 MB (RAM) plus 512 MB ash for presets

Delay 2 s (input) + 100 ms (output) for time alignm ent

Equalizer

Raised-cosine, custom FIR, parametr ic IIR:

peaking, hi/lo-shelving, all-pass,

band-pass, band-stop, hi/lo-pass

Crossover

linear phase (FIR), Butterworth,

Linkwitz-Riley, Bes sel: 6 dB/oct to 48 dB/oct (IIR)

Limiters TruePower™, RMS voltage, RMS cur rent, Peak limiter

Damping control

Active DampingControl™ and

LiveImpedance™ measurement

Audio

Gain 26 dB 29 dB 32 dB 35 dB

Input sensitivity @ 8  4.9 V 3 .47 V 2.45 V 1.73 V

Max input level 20 dBu

Frequency Response ( ±0.5 dB , 1 W @ 8 ) 20 Hz - 20 kHz

Crosstalk (1 kHz) typic al -70 dB

S/N (32 dB gain, analog input 20 Hz - 20 kHz @ 8 ) > 110 dB(A)

Input impedance 20 k bala nced

THD+N (from 0.1 W to Full Power)

< 0.1%

(typical < 0.05%)

DIM (from 0.1 W to Full Power) < 0.0 5%

Slew Rate (input lter bypassed @ 8 ) > 50 V/µs

Damping Factor @ 8 , 20 Hz - 100 Hz > 500

Channel Handling

Number of output channels

4 Hi-Z or Lo-Z

(bridg eable per ch. pair)

Phoenix PC 5/8-STF1-7,62

Number of input channels

Analog 4 Phoenix MC 1,5/12-ST-3,81

Dante™* 4 1 x RJ45

Construction

Dimensions

483 x 44.5 x 358 mm

19.0 x 1.75 x 14.1 in

Weight 7.0 Kg (15.4 lb)

AC Mains Power

Power supply Universal regulated switch mode with PFC, SR M

Nominal voltage (±10%) 100-240 V @ 50-60Hz

Power fac tor (> 50 0 W ouput) > 0.95

Consumption/current draw @ 115 V @ 23 0 V

Idle 32.3 W 0.45 A 32.4 W 0.33 A

Idle (DSP+D) 33.6 W 0.5 A 33.7 W 0.35 A

1/8 Max Outp ut Power @ 4  850 W 9.16 A 826.8 W 5.02 A

1/4 Max Output Power @ 4  1718 W 15.96 A 1651 W 9.41 A

AC Mains co nnector

IEC C20 inlet (20 A max)

region-specic power cord provided

Thermal

Operating temperature -10° - 35° C / 14° - 95° F

Cooling

Fan, continuously variable speed,

temperature controlled, front to rear a irow

Thermal dissipation @ 115 V @ 230 V

Idle 110.3 BTU/h 27.8 kcal/h 110.6 BTU/h 27.9 kcal/h

Idle (DSP+D) 114.7 BTU/h 28.92 kcal/ h 115.1 BTU/h 29.02 kcal/h

1/8 Max Outp ut Power @ 4  853.5 BTU/h 215.2 kcal/h 768.1 BTU/h 193.7 kcal/h

1/4 Max Output Power @ 4  1768.5 BTU/h 445.9 kcal/h 1539.8 BTU/h 388.3 kcal/h

Output Stage

Maximum output power per channel @ 8  1200 W

Maximum output power per channel @ 4  1200 W

Maximum output power per channel @ 2  1500 W

Maximum output power @ 4  Bridged 3000 W

Maximum output power @ 8  Bridged 240 0 W

Maximum output power @ Hi-Z distributed line 100 V 1200 W

Maximum output power @ Hi-Z distributed line 70 V 120 0 W

Maximum unclipped output vol tage @ 8  139 V

peak

Maximum output current 45 A

peak

T he power gure is calculated by driving and loading symmetrically all the
channels: uneven loads allow to achieve higher performances.

Quattrocanali 4804 DSP+D

English | 21

Quattrocanali 2404

Networking

Standards compliance auto-sensing Fast Ethernet (IEEE 80 2.3u, 100 Mbit /s)

Supported topologies Star

Remote inter face Armonía Pro Audio Suite™

DSP*

AD conver ters

24 Bit Tandem™ @ 48 kHz

125 dB-A Dyna mic Range - 0.005 % THD+N

DA conver ters

24 Bit Tandem™ @ 48 kHz

117 dB-A Dynamic Range - 0.0 03 % THD+N

Sample rate converter

24 Bit @ 44.1 kHz to 192 kHz

140 dB Dynamic Range - 0.00 01 % THD+N

Internal precision 32 bit oating point

Latency 2.5 ms xed latency architecture

Memory/Presets 128 MB (RAM) plus 512 MB ash for presets

Delay 2 s (input) + 100 ms (output) for time alignm ent

Equalizer

Raised-cosine, custom FIR, parametr ic IIR:

peaking, hi/lo-shelving, all-pass,

band-pass, band-stop, hi/lo-pass

Crossover

linear phase (FIR), Butterworth,

Linkwitz-Riley, Bes sel: 6 dB/oct to 48 dB/oct (IIR)

Limiters TruePower™, RMS voltage, RMS cur rent, Peak limiter

Damping control

Active DampingControl™ and

LiveImpedance™ measurement

Audio

Gain 26 dB 29 dB 32 dB 35 dB

Input sensitivity @ 8  3.46 V 2.46 V 1.73 V 1.23 V

Max input level 20 dBu

Frequency Response ( ±0.5 dB , 1 W @ 8 ) 20 Hz - 20 kHz

Crosstalk (1 kHz) typic al -70 dB

S/N (32 dB gain, analog input 20 Hz - 20 kHz @ 8 ) > 108 dB(A)

Input impedance 20 k bala nced

THD+N (from 0.1 W to Full Power)

< 0.1%

(typical < 0.05%)

DIM (from 0.1 W to Full Power) < 0.0 5%

Slew Rate (input lter bypassed @ 8 ) > 50 V/µs

Damping Factor @ 8 , 20 Hz - 100 Hz > 500

Channel Handling

Number of output channels

4 Hi-Z or Lo-Z

(bridg eable per ch. pair)

Phoenix PC 5/8-STF1-7,62

Number of input channels

Analog 4 Phoenix MC 1,5/12-ST-3,81

Dante™* 4 1 x RJ45

Construction

Dimensions

483 x 44.5 x 358 mm

19.0 x 1.75 x 14.1 in

Weight 6.8 Kg (15.0 lb)

AC Mains Power

Power supply Universal regulated switch mode with PFC, SRM

Nominal voltage (±10%) 100-240 V @ 50-60Hz

Power fac tor (> 50 0 W ouput) > 0.95

Consumption/current draw @ 115 V @ 230 V

Idle 31.4 W 0.40 A 31.6 W 0. 28 A

Idle (DSP+D) 32.7 W 0.45 A 31.8 W 0.29 A

1/8 Max Outp ut Power @ 4  442 W 4.2 A 438 W 2.39 A

1/4 Max Output Power @ 4  878 W 8.02 A 849 W 4.41 A

AC Mains co nnector

IEC C20 inlet (20 A max)

region-specic power cord provided

Thermal

Operating temperature -10° - 35° C / 14° - 95° F

Cooling

Fan, continuously variable speed,

temperature controlled, front to rear a irow

Thermal dissipation @ 115 V @ 220 V

Idle 107.2 BTU/h 27.0 kcal/h 107.9 BTU/h 27.2 kcal/h

Idle (DSP+D) 111.6 BT U/ h 28.1 kcal/h 112.0 BTU/h 28.2 kcal/h

1/8 Max Outp ut Power @ 4  484.8 BTU/h 122.2 kcal/h 471.2BTU/h 118.8 kcal/h

1/4 Max Output Power @ 4  949.1 BTU/h 239.3 kcal/h 850.1 BTU/h 214.3 kcal/h

Output Stage

Maximum output power per channel @ 8  600 W

Maximum output power per channel @ 4  600 W

Maximum output power per channel @ 2  800 W

Maximum output power @ 4  Bridged 160 0 W

Maximum output power @ 8  Bridged 120 0 W

Maximum output power @ Hi-Z distributed line 100 V 60 0 W

Maximum output power @ Hi-Z distributed line 70 V 600 W

Maximum unclipped output vol tage @ 8  100 V

peak

Maximum output current 45 A

peak

T he power gure is calculated by driving and loading symmetrically all the
channels: uneven loads allow to achieve higher performances.

Quattrocanali 2404 DSP+D

22 | Quattrocanali Series

Networking

Standards compliance auto-sensing Fast Ethernet (IEEE 80 2.3u, 100 Mbit /s)

Supported topologies Star

Remote inter face Armonía Pro Audio Suite™

DSP*

AD conver ters

24 Bit Tandem™ @ 48 kHz

125 dB-A Dyna mic Range - 0.005 % THD+N

DA conver ters

24 Bit Tandem™ @ 48 kHz

117 dB-A Dynamic Range - 0.0 03 % THD+N

Sample rate converter

24 Bit @ 44.1 kHz to 192 kHz

140 dB Dynamic Range - 0.00 01 % THD+N

Internal precision 32 bit oating point

Latency 2.5 ms xed latency architecture

Memory/Presets 128 MB (RAM) plus 512 MB ash for presets

Delay 2 s (input) + 100 ms (output) for time alignm ent

Equalizer

Raised-cosine, custom FIR, parametr ic IIR:

peaking, hi/lo-shelving, all-pass,

band-pass, band-stop, hi/lo-pass

Crossover

linear phase (FIR), Butterworth,

Linkwitz-Riley, Bes sel: 6 dB/oct to 48 dB/oct (IIR)

Limiters TruePower™, RMS voltage, RMS cur rent, Peak limiter

Damping control

Active DampingControl™ and

LiveImpedance™ measurement

Audio

Gain 26 dB 29 dB 32 dB 35 dB

Input sensitivity @ 8  2.45 Vrms 1.74 V rm s 1. 22 V rms 0.87 Vrms

Max input level 20 dBu

Frequency Response ( ±0.5 dB , 1 W @ 8 ) 20 Hz - 20 kHz

Crosstalk (1 kHz) typic al -70 dB

S/N (20 Hz - 20 kHz A-Weighted @ 8 ) > 104 dB

Input impedance 20 k bala nced

THD+N (from 0.1 W to Full Power)

< 0.1%

(typical < 0.05%)

DIM (from 0.1 W to Full Power) < 0.0 5%

Slew Rate (input lter bypassed @ 8 ) > 50 V/µs

Damping Factor @ 8 , 20 Hz - 100 Hz > 500

Channel Handling

Number of output channels

4 Hi-Z or Lo-Z

(bridg eable per ch. pair)

Phoenix PC 5/8-STF1-7,62

Number of input channels

Analog 4 Phoenix MC 1,5/12-ST-3,81

Dante™* 4 1 x RJ45

Construction

Dimensions

483 x 44.5 x 358 mm

19.0 x 1.75 x 14.1 in

Weight 6.8 Kg (15 lb)

AC Mains Power

Power supply Universal regulated switch mode with PFC, SRM

Nominal voltage (±10%) 100-240 V @ 50-60Hz

Power fac tor (> 50 0 W ouput) > 0.95

Consumption/current draw @ 115 V @ 230 V

Idle 31.4 W 0.40 A 31.6 W 0.28 A

Idle (DSP+D) 32.7 W 0.45 A 32.8 W 0.29 A

1/8 Max Outp ut Power @ 4  301 W 2.75 A 302 W 1.65 A

1/4 Max Output Power @ 4  556 W 5.47 A 553 W 3.02 A

AC Mains co nnector

IEC C20 inlet (20 A max)

region-specic power cord provided

Thermal

Operating temperature -10° - 35° C / 14° - 95° F

Cooling

Fan, continuously variable speed,

temperature controlled, front to rear a irow

Thermal dissipation @ 115 V @ 220 V

Idle 107.2 BTU/h 27.0 kcal/h 107.9 BTU/h 27.1 kcal/h

Idle (DSP+D) 111.6 BT U/ h 28.1 kcal/h 108.6 BTU/ h 27.3 kcal/h

1/8 Max Outp ut Power @ 4  344.8 BTU/h 86.8 kcal/h 348.2 BTU/h 87.6 kcal/h

1/4 Max Output Power @ 4  532.6 BTU/h 134.0 kcal/h 522.3 BTU/h 131.4 kcal/h

Output Stage

Maximum output power per channel @ 8  300 W

Maximum output power per channel @ 4  300 W

Maximum output power per channel @ 2  400 W

Maximum output power @ 4  Bridged 800 W

Maximum output power @ 8  Bridged 600 W

Maximum output power @ Hi-Z distributed line 100 V 30 0 W

Maximum output power @ Hi-Z distributed line 70 V 300 W

Maximum unclipped output vol tage @ 8  70 V

peak

Maximum output current 33 A

peak

T he power gure is calculated by driving and loading symmetrically all the
channels: uneven loads allow to achieve higher performances.

Quattrocanali 1204
Quattrocanali 1204 DSP+D

English | 23

Powersoft S.p.A.

Via Enrico Conti, 5

50018 Scandicci (FI) Italy

Tel: [phone]
Fax: [phone]

Sales & general inquiries: [e-mail]

Application & technical support: [e-mail]

Service & maintenance: [e-mail]

Compliance requests: [e-mail]

powersoft-audio.com