powersoft_K Series_uguide_en_v2.3
© 2012 Powersof t
Powersoft S.r.l. • Via Enrico Conti, 5 • 50018 Scandicci (FI) • Italy
+39 055 735 0230 • sales@powersoft.it • www.powersoft-audio.com
K Series ampliers
User Guide v 2.3
DO000044 REV 02
November 2012
K2 / K2 DSP + AESOP
K3 / K3 DSP + AESOP
K6 / K6 DSP + AESOP
K8 / K8 DSP + AESOP
K10 / K10 DSP + AESOP
K20 / K20 DSP + AESOP
▶
2
Intentionally left blank
powersoft_K Series_uguide_en_v2.3
© 2012 Powersof t
Powersoft S.r.l. • Via Enrico Conti, 5 • 50018 Scandicci (FI) • Italy
+39 055 735 0230 • sales@powersoft.it • www.powersoft-audio.com
1 Warnings. ........................................5
1.1 Impor tant Safety Instructions . ......................5
1.2 Approvals . .......................................5
1.3 Warning Notices ..................................6
1.3.1 Location. ....................................6
1.3.2 Precautions Regarding Installation. ..............6
1.4 Safety Rules . .....................................6
1.5 Speaker Damage ..................................6
1.6 Speaker Output Shock Hazard . ....................7
2 Front and Rear Panel Reference Figures. ...............8
3 Welcome. .......................................11
3.1 Introduction .....................................11
3.2 The K Series .....................................11
3.3 More sound and less weight . ......................11
3.4 The Show Always Goes On . ......................11
4 Installation.......................................11
4.1 Unpacking .......................................11
4.2 Mounting . ......................................11
4.3 Cooling . ........................................11
4.4 Operating Precautions ............................12
4.5 Grounding . .....................................12
4.6 AC Mains connection .............................12
5 Connections and Operation. .......................12
5.1 Connecting Audio Inputs . ........................13
5.1.1 Analog Connection...........................13
5.1.2 AES/EBU Connection. .......................13
5.2 Connecting Audio Outputs . ......................14
5.3 Internal Signal Path Polarity . .......................14
5.4 Remote Control Connection . .....................15
5.4.1 V Ext. ......................................15
5.4.2 Serial Connection............................15
5.4.3 Ethernet Connection.........................15
5.5 Amplier Setup and Settings . .....................16
5.5.1 Introduction. ...............................16
5.5.2 The main screen and the LED bars.............16
5.6 Front Panel Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
6 The main menu. ..................................17
7 Amplier Settings. ................................20
7.1 Output attenuation . .............................20
7.2 Input Gain/Sensitivity . ............................20
7.3 Input select ......................................20
7.4 Max output voltage . .............................20
7.5 Max mains current . ..............................21
7.6 Clip Limiter CH1 - CH2 ...........................21
7.7 Gate CH1 - CH2 .................................21
7.8 Mute At Power On ...............................21
7.9 Idle Mode . ..................................... 22
8 DSP Settings. ....................................22
8.1 The DSP Processing Chain . ...................... 22
8.2 DSP Settings Menu . ............................. 22
8.2.1 Common Settings. ......................... 22
8.2.1.1 Source Selection. .................... 22
8.2.1.2 AES3. ..............................22
8.2.1.3 Gain trim (dB)........................ 22
8.2.1.4 If no link. ............................ 22
8.2.1.5 Cross Limit. ......................... 23
8.2.1.6 Sound speed (m/s).................... 23
8.2.2 Channel Settings................................ 23
8.2.2.1 EQs. ............................... 23
8.2.2.2 LP Filter (and HP Filter). .............. 25
8.2.2.3 Polarity. ............................25
8.2.2.4 Channel Delay. ...................... 25
8.2.2.5 Gain................................ 25
8.2.2.6 Limiters............................. 25
8.2.2.7 Damping Control. ....................28
8.3 CH1/CH2 Setup . ................................29
8.3.1 Auxiliar y Delay. .............................29
8.3.2 Diagnostics. ................................29
8.4 Input EQ ........................................29
8.5 Reset Input Section . .............................29
8.6 Reset Output Section . ...........................29
9 Network Operations. .............................29
9.1 User’s introduction to AESOP . ................... 30
9.1.1 Data stream. ...............................30
9.1.2 Audio. .................................... 30
9.1.3 Network connections: Ethernet, AES3 forwarding
K Series
User Guide
▶
4
K Series User Guide
and repeater modes. ........................ 30
9.2 Network robustness . ............................33
9.3 Network connections . ...........................33
10 KAESOP Network settings menu. ...................36
10.1 Device Mode . ...................................36
10.2 Addressing Mode . ...............................36
10.3 Set Address . ....................................37
10.4 Show Net Cong . ...............................37
10.5 Audio . .........................................37
10.5.1 Source Selection............................37
10.5.2 Source Mode. .............................37
10.5.3 Gain Trim..................................37
10.5.4 If no link. ..................................37
11 Display..........................................37
11.1 Output Meters . .................................37
11.2 Temperature . ...................................37
11.3 Mains meters . ..................................38
11.4 Amplier Name . ............................... 38
12 Local presets. ....................................38
12.1 Locked presets . ................................ 38
12.2 Locked bank size . ............................... 38
12.3 Recall local preset . .............................. 38
12.4 Save local preset . ................................39
12.5 Change Lock Code .............................. 40
12.6 Erase all presets . ............................... 40
13 Setup. ..........................................41
13.1 Hardware info . ..................................41
13.2 Hardware monitor . ..............................41
13.3 LCD contrast ....................................41
13.4 Key Locking and Setting The Keylock Code . .........41
13.5 Single Channel Muting . ...........................41
14 Protection. ......................................42
14.1 Turn-On/Turn-Off muting . .......................42
14.2 Shor t circuit protection . ..........................42
14.3 Thermal protection . .............................42
14.4 DC fault protection . .............................42
14.5 Input/Output protection ..........................42
15 User Maintenance.................................42
15.1 Cleaning . .......................................42
15. 2 Ser v ice . ........................................42
15.3 Dust Removal . ..................................42
16 Warranty........................................43
17 Assistance. ......................................43
18 Appendix. .......................................43
18.1 Custom Ethernet/AES3 combo box . ...............43
18.2 Amplier Error Codes . .......................... 44
18.3 SmartCard function . ............................ 44
18.4 Control Software . ...............................45
18.4.1 Powersoft’s Armonía Pro Audio Suite. ........45
18.4.2 Third Par ty Controls. .......................45
19 Technical Specications. ...........................46
19.1 K 2 . ........................................... 48
19.2 K2 DSP+A E SOP . ................................49
19.3 K 3 . ............................................50
19.4 K3 DSP+AES OP . ................................51
19.5 K6 ..............................................52
19.6 K6 DSP+AESOP . ................................53
19.7 K8 ............................................. 54
19.8 K8 DSP+AES OP . ................................55
19.9 K10 .............................................56
19.10 K10 DS P+AESOP . ..............................57
19 . 11 K 20 ............................................58
19.12 K20 DSP+AES OP . ..............................59
powersoft_K Series_uguide_en_v2.3
© 2012 Powersof t
K Series
User Guide
1 Warnings
1.1 Important Safety Instructions
CAUTION: IN ORDER 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”
SAFEGUARDS: Electrical energy can perform many useful
functions. 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, obser ve the following instructions for its installation,
use and servicing.
▶
Read these instructions.
▶
Keep these instructions.
▶
Heed all warnings.
▶
Follow all instructions.
▶
Do not use this amplier near water.
▶
Clean only with a dry cloth.
▶
Do not block any ventilation openings.
▶
Install in accordance with the manufacturer’s instructions.
▶
Do not install near any heat sources such as radiators, heat
registers, stoves, or other apparatus (including ampliers)
that produce heat.
▶
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 (for K2 and K3 only. K6,
K8, K10 and K20 come with a special mains cable without
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
!
plugs).
▶
Protect the power cord from being walked on or pinched
particularly at plugs, convenience receptacles, and the point
where they exit from the apparatus.
▶
Only use attachments/accessories specied by the
manufacturer.
▶
Unplug this amplier during lightning storms or when unused
for long periods of time. Refer all servicing to qualied ser vice
personnel. Servicing is required when the amplier has been
damaged in any way. For example if the power-supply cord
or plug have been damaged, if liquid has been spilled or
objects have fallen into the amplier, if the amplier has been
exposed to rain or moisture, if it has been dropped or if it
does not operate normally.
CAUTION: To prevent re hazard, Class 2 (for K2 and K3) and
Class 3 (for K6, K8, K10 and K20) wiring cable should be used for
connection with speaker s. Cabling should be routed away from
potential hazards to avoid damage to the insulation of the cable
itself.
EXPLANATIONS OF GRAPHICAL SYMBOLS:
“The Lightning Flash with arrowhead symbol within an equilateral
triangle is intended to aler t the user to the presence of uninsulated
“dangerous voltage” within the product enclosure that may be of
sufcient magnitude to constitute a risk of shock to persons”.
“The exclamation point within an equilateral triangle is intended
to aler t the user to the presence of impor tant operating and
maintenance (servicing) instructions in the literature accompanying
the product”.
1.2 Approvals
The K series is installed according to the Canadian Electrical Code
or National Electrical Code, as applicable.
Install this product in accordance with Canadian Electrical Code
or National Electrical Code and other local electrical or building
codes as applicable. Mount in rack only. The exible mains cable
must not pass through walls.
This equipment has been tested and found to compliant by
Notied Body 2047 (Directive 2004/108/EC-EMC) pursuant to
the product family standard for audio professional use: EN 551031 and EN 55103-2 standard; EN61000- 3 - 2 , EN 61000 - 3 - 3.
Electromagnetic Ambients E4, E5.
This equipment has been tested and found to compliant by
Notied Body 2047 (Directive 2004/108/EC-EMC) pursuant to
the product family standard for audio professional use: Radiated
!
▶
6
K Series User Guide
emissions FCC standard section 15.109, IEC CISPR standard Pub.
22 ed 6.0 (2008-09) CLASS A chapter 7.1.1, Conducted emission
FCC standard section 15.107, IEC CISPR standard Pub. 22 ed 6.0
(2008-09) CL ASS B.
This equipment has been tested and found to comply by Notied
Body 2047(Directive 2006/95/EC L.V.) pursuant to the audio
apparatus safety requirements: Standard EN 60065
In a domestic environment this product may cause radio
inter ferences in which case the user may be required to take
adequate measures.
Average half-cycle r.m.s. inrush current on initial switch-on
K2, K2DSP, K3, K3DSP: 10 A
K6, K6DSP, K8, K8DSP, K10, K10DSP: 50 A
K20, K20DSP: 50 A
Average half-cycle r.m.s. inrush current after a supply
interruption of 5s.
K2, K2DSP, K3, K3DSP: 10 A
K6, K6DSP, K8, K8DSP, K10, K10DSP: 10 A
K20, K20DSP: 10 A
1.3 Warning Notices
Note: This equipment has been tested and found to comply
with the limits for Class A digital device, pursuant to Par t 15 of
the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment
is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may
cause harmful interference to radio communications. Operation
of this equipment in a residential area is likely to cause harmful
inter ference in which case the user will be required to correct the
inter ference at his own expense.
Information to User
Alterations or modications carried out without appropriate
authorization may invalidate the user’s right to operate the
equipment.
1.3.1 Location
Install the amplier in a well-ventilated location where it will not
be exposed to high temperature or humidity. Do not install the
amplier 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 amplier in a
damp or dusty environment may result in malfunction or accident.
1.3.2 Precautions Regarding Installation
Placing and using the amplier for long periods of time on heat
generating sources will affect its performance. Avoid placing the
amplier on heat generating sources. Install this amplier as far as
possible from tuners and T V sets. An amplier installed in close
proximity of such equipment may experience noise or generic
performance degradation.
WARNING: To prevent re or electric shock:
▶
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 amplier.
▶
Do not expose this amplier to rain or moisture.
▶
This equipment must not be exposed to dripping or splashing
liquids: objects lled with liquids, such as vases, must not be
placed on the amplier.
1.4 Safety Rules
▶
This device must be powered exclusively by earth connected
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 qualied personnel.
▶
The manufacturer cannot be held responsible for damages
caused to persons, things or data due to an improper or
missing ground connection.
▶
Before powering this amplier, 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 spill water or other liquids into or on the amplier.
▶
Do not use this amplier if the electrical power cord is frayed
or broken.
▶
Do not remove the cover. Failing to do so will expose you to
potentially dangerous voltage.
▶
No naked ame sources such as lighted candles should be
placed on the amplier.
▶
Provide a sectioning breaker between the mains connections
and the amplier. Suggested device is 32A/250VAC, C or
D curve, 10KA (K6-K8-K10-K20) or 16A/250VAC, C or D
curve, 10KA (K2-K3)
▶
Contact the authorized service center for ordinary and
extraordinary maintenance.
▶
The power cord type is LAPP CABLE OLFLEX191 3G6 /
SJT 3XAWG10 SALCAVI (Bahoing SJT 3x16AWG or I-sheng
SGIS 3G1,5mmq for K3 - K 2)
1.5 Speaker Damage
Powersof t Class D ampliers are among the most powerful
professional ampliers 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 amplier and
to use them in a sensible way that will not cause damage.
!
!
▶
7
K Series User Guide
Powersof t will not be held responsible for damaged speakers.
Consult the speaker manufacturer for power handling
recommendations.
Even if you reduce the gain using the amplier’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 ampliers of this power
range for more headroom (cleaner sound) rather than for
increased volume.
1.6 Speaker Output Shock Hazard
A Class D amplier is capable of producing hazardous output
voltages. To avoid electrical shock, do not touch any exposed
speaker wiring while the amplier is operating.
This manual contains important information on operating your
Powersoft amplier correctly and safely. Please read it carefully
before operating your amplier. If you have any questions,
contact your Powersoft dealer.
▶
8
K Series User Guide
2 Front and Rear Panel Reference Figures
FIGURE 1: K Series front panel
On/Off switch
Ethernet + AESOP ports
(for both 2 or 4 ports versions, non
functional in models without AESOP)
DataCard slot
(for firmware updates, preset storage and step up)
Channel 1 meter LEDs
Channel 2 meter LEDs
Multifunctional keys
CLASS2
WIRING
Mains plug
Air vents
Channel 2 analog input or AES3
(depending on the position of the AES/EBU-
Analog button)
Channel 2 physical
link through output
Channel 2
output
Channel 1
output
Channel 1 physical
link through output
Channel 1 analog input
Channel 2 AES/EBU or analog input
selection button
(functional only for devices with retrofitted DSP
and/or KAESOP board)
Channel 1 and 2 output link
selection button
RS485 port
+ external
aux voltage
Serial remote ID
selection
FIGURE 2: K2/K3 2-port version rear panel
▶
9
K Series User Guide
FIGURE 3: K2/K3 4-port version rear panel
Mains plug
Air vents
Channel 2 analog input or AES3
(depending on the position of the AES/EBU-
Analog button)
Channel 2
output
Channel 1
output
Channel 1 analog input
Channel 2 AES/EBU or analog input
selection button
(functional only for devices with retrofitted DSP and/or
KAESOP board)
Channel 1 and 2 output link
selection button
RS485 port +
aux voltage
Serial remote ID
selection
FIGURE 4: K6/K8/K10/K20 2-port version rear panel
CLASS2
WIRING
Mains plug
Air vents
Ethernet +
AESOP ports
External
aux voltage
Channel 2 analog input or AES3
(depending on the position of the AES/EBU-
Analog button)
Channel 2 physical
link through output
Channel 2
output
Channel 1
output
Channel 1 physical
link through output
Channel 1 analog input
Channel 2 AES/EBU or analog
input selection button
Channel 1 and 2 output link
selection button
▶
10
K Series User Guide
FIGURE 5: K6/K8/K10/K20 4-port version rear panel
Mains plug
Air vents
Ethernet +
AESOP ports
External
aux voltage
Channel 2 analog input or AES3
(depending on the position of the AES/EBU-
Analog button)
Channel 2
output
Channel 1
output
Channel 1 analog input
Channel 2 AES/EBU or analog
input selection button
Channel 1 and 2 output link
selection button
A - Ethernet port number 1
B - Ethernet port number 2
C - V meter for channel 1
D - SmartCard slot
E - Function button number 1
F - Function button number 2
G - Function button number 3
H - Function button number 4
I - LCD display
J - V meter for channel 2
K - On/Off switch
L - Grill filter screws
FIGURE 6: K Series detailed front panel view
▶
11
K Series User Guide
operation error. Every amplier 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!
4 Installation
4.1 Unpacking
Carefully open the shipping car ton and check for any noticeable
damage; the gure below ( FIGURE 7) shows the packing view.
Every Powersoft amplier 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.
The K Series box contains the following:
▶
1 K Series amplier
▶
1 x AC Mains cord
▶
1 x User Guide
FIGURE 7:
Amplifier
Mains cable
User guide
K Series packaging box
4.2 Mounting
All Powersof t ampliers are designed for standard 19” rack
mounting; there are four front panel holes and two rear-lateral
holes. In order to limit the risk of mechanical damages, ampliers
must be xed to the rack using both frontal as well as rear
mounting holes.
4.3 Cooling
All Powersoft ampliers 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 amplier.
The amplier’s cooling system features an “intelligent” variable-
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
3 Welcome
3.1 Introduction
Congratulations on buying a Powersoft K Series amplier!
Powersof t is a leading company in the eld of high efciency
audio power management. The Powersof t Class D technology
has changed the way the world looks at professional audio
amplication: no other amplier’s performance comes close for
applications demanding high power and long term reliability.
Thanks to amazing reductions in heat output and weight, without
sacricing output powers, Powersoft ampliers can be used in an
unlimited range of PA applications such as opera houses, theaters,
churches, cinema, and theme parks.
3.2 The K Series
K Series has many advanced features, digital control of many
parameters, adjustable maximum mains consumption, selectable
digital presets and a graphic display that shows detailed information
of the status of the amplier. All K Series ampliers come with built
in Power Factor Correction. This unique feature ensures that a
predominantly resistive load is presented to mains thus minimizing
current distor tion and voltage/current displacement. This leads to
improved performance of the amplier at high levels of output and
avoids mains-voltage collapses, typical of standard and switching
power supplies. Another great advantage of this technology is that
its performance is, to a large extent, independent of mains voltage.
The rated output power does not var y with load/line conditions.
3.3 More sound and less weight
Class D technology based ampliers are highly efcient, delivering
greater power to speakers with reduced heat dissipation: typical
running efciency 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 ampliers which achieve highest
efciency only at full rated power output, Class D efciency is
almost independent of output level. Music has an average power
density of 40% of its peak value; this means that other (nonclass D) ampliers can easily generate 10 times more heat than
Powersof t products for the same sound pressure level.
Powersof t ampliers deliver cr ystal-clear highs, and a tight, welldened 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 distortion,
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 K Series’ high performance ratings across the
audio bandwidth.
3.4 The Show Always Goes On
The K series offers complete protection against any possible
▶
12
K Series User Guide
to a strict minimum. Should however the amplier be subject to
an extreme thermal load, the fan will force a very large volume
of air through the heat sink. In the ex tremely rare event that the
amplier should dangerously overheat, sensing circuits shut down
all channels until the amplier 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 K Series ampliers. Exhaust cooling air is forced out
through the rear of the chassis (see FIGURE 8); make sure there
is enough space around the back of the amplier for this air to
escape. K Series ampliers can be stacked one on top of the other
due to the efcient 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 K Series
ampliers installed to guarantee adequate air ow.
FIGURE 8:
Air flow
Forced air cooling: front to back airow
4.4 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 specied in the K Series documentation
(100V-240V ±10%). Damage caused by connecting the amplier
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.
4.5 Grounding
There is no ground switch or terminal on the K Series ampliers.
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 inter ference 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.
4.6 AC Mains connection
The AC Main connection is made via the CPC type connector
(IEC20A for K3 and K2) on the rear side of the panel. The
gure below shows how to connect the mains power cable to
the amplier. Make sure the AC mains voltage used is within
the acceptable operating voltage range specied in the K Series
documentation (100V-240V ±10%). It is important to connect the
ground for safety, do not use adapters that disable the ground
connection. All K Series ampliers have an automatic power
factor correction system for a per fect mains network interface.
The amplier is a resistive load for the mains network, minimizing
the reactive power and the harmonic distortion on the current.
The system allows performance to be maintained even in case of
varying mains voltage.
FIGURE 9:
ground
mains
open the lock
and insert the plug
lock the plug
K2 and K3 only mains connection
FIGURE 10:
Vac
GND
K6/K8/K10/K20 mains connection
5 Connections and Operation
This chapter provides information on amplier connection and
operation. For optimal amplier performance, it is impor tant
to understand the meaning of the information that the K Series
amplier can provide regarding its status and conguration. This
information is available to the user both via front panel indicators
or via the Armonía client software when this is used. This chapter
will break down all the front panel operations and monitoring
functions the K Series amplier is capable of. The remaining part
of the chapter will explain how to correctly connect the amplier’s
inputs and outputs.
▶
13
K Series User Guide
5.1 Connecting Audio Inputs
5.1.1 Analog Connection
Input connections are made via the 3-pin XLR-female type or
1/4” phone Jack connectors on the rear side of the amplier. The
polarity is shown in the following gures:
FIGURE 11:
Audio input connection for K6/K8/K10/K20 models
FIGURE 12:
pin 2 - IN (+)
pin 1 - shield
pin 3 - IN (-)
ring - IN (-)
sleeve - shield
tip - IN (+)
Audio input connections polarity
The gure below shows the connection of analog inputs for
balanced or unbalanced line. You can use both congurations, but
you must consider that unbalanced and long lines can introduce
noise in the audio system. The “Link On/Off ” switch located in
the rear panel is for direct paralleling of the rear input connectors.
The remaining input connectors can be used to carry signal to
other amps.
FIGURE 13:
Balanced input Unbalanced input
IN (+)
IN (+)
IN (-)
shield
shield
Balanced and unbalanced input connections
XLR pinout chart:
XLR Pin number Assigned to
1 shield
2 hot (+)
3 cold (-)
Audio jack pin out summary:
Connector element Assigned to
sleeve shield
tip hot (+)
ring cold (-)
For K3 and K2 models, input connections are shown in the gure
below; analog inputs for balanced and unbalanced lines are also
available for these models.
FIGURE 14:
signal source input
XLR female connector
signal source output
XLR male connector
K2 and K3 models audio input connections
pin 1 - shield
pin 2 - IN (+)
pin 3 - IN (-)
pin 2 - IN (+)
pin 1 - shield
pin 3 - IN (-)
XLR male
XLR female
FIGURE 15: K2 and K3 models audio input connections polarity
5.1.2 AES/EBU Connection
On DSP equipped ampliers, CH2 becomes the AES/EBU input
when the AES/EBU pushbutton is released (see FIGURE 16); in
this mode, if an analog input in CH2 is applied, the ANALOG CH2
OUT is off. If CH2 is to be used as an analog input, the AES/EBU
pushbutton must be pressed.
▶
14
K Series User Guide
Channel 2 AES/EBU or analog
input selection button
analog input
AES/EBU input
FIGURE 16: AES/EBU or analog input selection for channel 2
5.2 Connecting Audio Outputs
Audio output connections are made via Neutrik® speakon
connectors.
FIGURE 17:
Audio output connector
Use suitable wire gauges to minimize power and damping factor
losses in speaker cables. All K Series amplier outputs can also be
congured to work in bridge mode. For each device, the 1+ and
2+ pins of speakon connectors are internally physically bridged
together. They are the positive pole of the channel output. Pins
1- and 2- are also bridged together. They form the negative pole
of the channel output. Please note that in order to remain within
safe operating conditions, when using loads of 4 � or less (8 � or
less in bridge mode),connections must be made with a four wire
cable. Use one cable for each SpeakOn contact for either bridge
or stereo connections as shown in the following gures.
FIGURE 18:
1 -
1+
2+
2-
+
-
OUT1
1 -
1+
2+
2-
+
-
OUT2
Audio output connection in stereo mode
1 -
1+
2+
2-
+
-
OUT1
1 -
1+
2+
2-
OUT2
FIGURE 19: Audio output connection in bridge mode
5.3 Internal Signal Path Polarity
In order to increase the power’s supply energy storage efciency,
signals coming from channels 1 and 2 are polarity reversed one
with respect to the other when entering the amplier. This
ensures a symmetrical use of the voltage rails: if, for example,
both channels’ 1 and 2 input signals are going through a peak at
the same time, channel 1’s energy will come from the positive
voltage rails while channel 2, whose polarity is reversed with
respect to channel 1, will be fed energy from the negative voltage
rails. In this manner, the power supply will work symmetrically,
with one channel catered by the positive rails and the other by
the symmetrical negative rails. Channel 2’s signal will be polarity
reversed once more to ensure that both channels output with the
same polarity as their corresponding input signals. For this reason
it is ver y important not to invert the polarity of either channels
before feeding them to a K Series amplier. A double polarity
inversion (the rst by the user inserting the input signal and the
other by the amplier’s internal circuitry) results in no inversion at
all. If this were the case, both channels would be weighing on only
▶
15
K Series User Guide
one side (positive or negative) of the power supply’s voltage rails.
This would result in an inefcient use of the power supply’s energy.
FIGURE 20:
first polarity
inversion
second polarity
inversion
Channel 1
input
Channel 2
input
Channel 1
output
Channel 2
output
Internal signal path polarity with example input signals.
Both channels 1 and 2 are fed the same sine signal
Please pay special attention in using balanced inputs on all
measurement equipment (such as oscilloscope probes) when
you are bench testing.
5.4 Remote Control Connection
5.4.1 V Ext
The “V Ext” terminal is used to remotely turn on, turn off or
put in standy any K Series amplier. The “V Ext” signal reaches
the amplier via pin 2 of the rear Ethernet connector for 2 por t
models. Four port models have a dedicated 2 pin Phoenix por t
located near the rear Ethernet ports. When the V ext por t is
powered by and external 12 VDC 1A power supply, an internal
controller is enabled to listen for incoming device power-on/off/
standby commands.
CLASS2
WIRING
FIGURE 21: Vext Phoenix connector in 4 port K Series ampliers
5.4.2 Serial Connection
K Series ampliers without an optional KAESOP board can be
remotely controlled via an RS485 connection. Remote connection
data cables must have an 8 pin modular plug to be inserted in the
RJ45 jack labelled “DATAPORT” on the rear of the amplier. By
plugging an 8 pin modular plug and selecting the unit’s remote
ID via the rotary trimmers, the amp is ready to be remotely
controlled. Please note that ID numer 00 is not allowed.See
FIGURE 22 for details.
FIGURE 22:
ID selection example
ID = 28
GND
485-
485+
Vext
Pin Layout
8 pin
modular
plug
Remote connection jack, plug and ID selection
Remote connection jack pinout char t:
1 GND
2 Vext
3 485 4 485 +
5 485 +
6 485 7 Vext
8 GND
5.4.3 Ethernet Connection
K Series ampliers can be remotely controlled via an Ethernet
connection if provided with a KAESOP board. Two- or four-
ports ampliers allow Ethernet data connections with a variety
of possible topographies. See “9 Network Operations” on page
29 for more details. If four plugs are present (two in the front
and two in the back of the amp), the pair in the back are master
ports, while the two in front are slave ports.
▶
16
K Series User Guide
FIGURE 23:
Pin Layout
8 pin
modular
plug
100BaseT RX/TX +
100BaseT RX/TX 100BaseT TX/RX +
AES3-A RX/TX +
AES3-A RX/TX 100BaseT TX/RX AES3-B RX/TX +
AES3-B RX/TX -
OR, for models
with 4 ports:
Ethernet connection ports for 2-port and 4-port
ampliers
FIGURE 24:
(tab down)
RJ45
pin1pin
8
white
orange
white
blue
white
green
white
brown
green
orange
brown
blue
RJ45 jack pinout for KAESOP connections
The RJ45 LEDs are coded s follows:
green LED: indicates the passage of control data
yellow LED: indicates the passage of AES3 signals
Remote connection jack pinout char t:
pin color RJ45 KAESOP pin out
1 white/green 100BaseT AutoMDI RX/TX +
2 green 100BaseT AutoMDI RX/TX -
3 white/orange 100BaseT AutoMDI TX/RX +
4
blue
AES3-A RX/TX +
5
white/blue
AES3-A RX/TX -
6
orange
100BaseT AutoMDI TX/RX -
7
white/brown
AES3-B RX/TX +
8
brown
AES3-B RX/TX -
5.5 Amplier Setup and Settings
5.5.1 Introduction
In all K Series ampliers, the combination of the front panel
buttons together with the LCD display allow the user access to
detailed information and complete control over the amplier’s
status. Each button has multiple functions and the display
shows the current active function for each button. This chapter
illustrates all the functions and settings accessible via the
amplier front panel. FIGURE 6 illustrates all K Series front panel
elements.
Armonía Pro Audio Suite
All the setup and settings functions described in this section can be
accessed through a comptuer by installing Powersoft’s Armonía
Pro Audio Suite software. Armonía is a software environment
entirely developed in-house by Powersoft. Its two main features
are full end user remote control of the amp and its signal processing
capabilities. The intuitive interface provides reliable information
and real time control of all DSP functions (see “18.4.1 Powersoft’s
Armonía Pro Audio Suite” on page 45). Refer to the Armonía
manual for installation and conguration of the client software.
Armonía is free. It can be downloaded after signing up for our user
forum: see the “Armonía Suppor t Forum” section at
http://www.powersoft-audio.com/
5.5.2 The main screen and the LED bars
When the amp is turned on, the main screen appears after a
short presentation.
lock
mute mute menu
CH1 READY READY CH2
V I VI
FIGURE 25: K Series main screen
The rst line of the screen will read “WAIT” while the system
undergoes an initial batch of internal tests to determine the status
of the amp. If all parameters are normal, “READY” will replace
“WAIT” on the display. System parameters are continuously
monitored by the internal controller. If any parameter value should
fall out of its correctly working range, a code error relative to that
particular parameter will appear on the third line of the LCD meter
▶
17
K Series User Guide
a the smallest amount possible. The “fast” mode will increase or
decrease the parameter value by an amount equal to 10 times the
amount increased in the “slow” mode. For example:
in “slow” mode: a single “+” button press will increase the Max
mains current from 22 A to 23 A
Max Mains Current
back
fast
- +
22 A rms
Max Mains Current
back
fast
- +
23 A rms
FIGURE 28: K Series slow parameter increase
in “fast” mode: a single “+” button press will increase the Max
mains current from 22 A to 32 A
Max Mains Current
back
slow
- +
22 A rms
Max Mains Current
back
slow
- +
32 A rms
FIGURE 29: K Series fast parameter increase
at the corresponding channel number. Should the parameter be
out of range for both adjacent channels, the error code will appear
in between the two compromised channels.
The LED columns on the front of the amp can work as output
voltage or current meters. When the LED bars are set to meter
output voltage, for example, the meters on the LCD screen will
indicate output current values. The vice versa is true: LED bars
set as output current meters, LCD display bars become output
voltage meters.
The single LEDs can have multiple functions:
LED Color Solid color Blinking
Red
Channel output level has
reached clipping limits
OR
channel has been muted for
protection
1
tone
detection
problem
Yellow
temperature of power circuits is
above 85°C
OR
output level
2
-2dB
power
circuits
temperature
critical
(80° - 85°C)
Green output level2 -3dB
Green output level2 -6dB
Green output level2 -9dB
Green output level2 -15dB
Green
input signal is above -60dBV
OR
output level
2
-18d B
1
in case of a short circuit protection event, the LCD screen will read “PROT”
2
with respect to the output clipping threshold
5.6 Front Panel Buttons
The four th line of the front panel LCD screen shows the functions
of the buttons immediately below. A beep conrms that a button
has been pressed; please note that this sound is not mutable.
Pressing the button directly below the “menu” label on the LCD
screen gives access to the amplier’s main menu. If an Armonía
client is connected to the amplier, a yellow blinking LED will
appear in the sof tware workspace view.
6 The main menu
The K series main menu can be accessed by pressing the rst
button on the right, underneath the LCD label “menu”. FIGURE
25 shows the new button setup adopted to allow users to navigate
the amp’s internal menu. The up and down arrows allow to scroll
the menu items. To access further menu voices branching off a
specic menu item, select it and press the “menu” button once.
FIGURE 26 and FIGURE 27 show the various submenus accessible
from the main menu. Each menu function will be described in the
following chapters.
Some submenus in the K Series amps require the user to set
a numerical value for specic parameters using the front panel
buttons. In order to speed this process up, these submenus
dedicate two of the four available buttons to switching to a fast
or slow parameter increment mode. When in the “slow” mode,
the up and down arrows increase or decrease the parameter by
▶
18
K Series User Guide
Settings
Analog => Out
Analog => DSP => Out
1
AES3 => Out
1
AES3 => DSP => Out
1
KAESOP => Out
2
KAESOP =>DSP => Out
1, 2
Output attenuation
Input gain/sens
Inuput select
Max output voltage
Max mains current
Clip limiter CH1
Clip limiter CH2
Gate CH1
Gate CH2
Mute at Power on
Idle Mode
Amplifier Settings
DSP Settings
1
Network Settings
2
see “DSP Settings” diagram
Device mode
Addressing mode
Set address
Show net config
Audio
Repeat (default)
Forward to AES3-A
Forward to AES3-B
Forward to both
IP address
subnet mask
Default gateway
Source selection
Source mode
Gain trim
If no link
AES3-XLR rear panel
AES3-A
AES3-B
Parallel from L
Parallel from R
Stereo
Mute
Analog
Display
Local presets
Setup
Output meters
Temperature
Mains meters
Amplifier name
Display Amp data
Edit Amplifier name
Lock presets
Locked bank size
Recall local preset
Save local preset
Change lock code
Erase all presets
Hardware Info
Hardware Monitor
LCD contrast
Set Keylock code
Service
1
Available only with optional DSP board2 Available only with optional KAESOP board
Menu
FIGURE 26: K Series main menu map
Loading...