2-Channel Power Amplifier for High

2-Channel Power Amplifier for High
2-Channel Power Amplifier for High-Performance Touring
2-channel mode
mono-bridged mode
▶▶ Medium to large-scale touring
2 Ω / Ch
4 Ω / Ch
8 Ω / Ch
4 Ω / Ch pair
8 Ω / Ch pair
▶▶ FOH & subwoofers
4,800 W
3,000 W
1,500 W
9,600 W
6,000 W
EIAJ Test Standard, 1 kHz, 1% THD
▶▶ High-power stage monitoring
▶▶ Stadiums & open-air events
▶▶ Arenas & concert halls
▶▶ Live clubs
The third-strongest amplifier in the K
Series, the K8 is anything but ‘small’.
With its output power reaching close
to 10 kW, it comfortably suits a broad
range of applications.
The rather impressive power density
paired with unique Powersoft
technologies warrants top performance
despite running off a single mains phase,
while occupying only a single 19” rack
unit and weighing only 12 kg/26.5 lb,
a result of efficiency exceeding 85%.
The K8 can be software upgraded
to become a K10, making it a safe
investment that grows with loudspeaker
systems without the need for replacing
the amp hardware.
Like all K Series models, the K8 is
designed for, and is absolutely stable
with, 2 Ω loads, further reducing the
number of amps required to power a
specific system.
Better still, the K8 can be equipped,
at the factory or anytime later, with an
optional state-of-the-art DSP board
for extensive sound management
functionality. IIR/FIR filters, safety
features like TruePower™ limiting
and LiveImpedance™, as well as the
convenient Active DampingControl™
are intuitively manageable with the free
PC software Armonía Pro Audio Suite™
via the standard RS485 communication
port. 1)
✓✓ Legendary Powersoft efficiency:
Unequaled Class D design with fixed switching frequency
Universal switch mode power supply with PFC (Power Factor Correction)
▶▶ Space and weight saving: only one rack space (1 RU) and 12 kg/26.5 lb
▶▶ Green Audio Power ® : more amplifier output power from the AC mains
power distribution due to >85% efficiency
✓✓ Outstanding performance and operational safety:
▶▶ Excellent sonic quality by design, including amp clip limiters and patented
ripple cancellation network
▶▶ Numerous amp/system/venue parameters can be configured, locked, and
monitored; i.e. AC mains voltage/current draw to protect from breaker tripping
✓✓ Communication:
▶▶ Fully digitally controlled amplifier providing feedback of status information
▶▶ RS485 serial communication port standard on board, for amplifier control
and monitoring via Armonía Pro Audio Suite™ software 1)
▶▶ Proven reliability, yet downloadable log file of all functional fault events with
time-related trace
✓✓ Safe investment: Step-up program allows smooth upgrade to K10
✓✓ Practically versatile:
▶▶ Mono-bridgeable amplifier channels; switch for linking analog signal inputs
▶▶ AC inrush current limiting; channel output voltage limiting
▶▶ Digital gain attenuator for gain/sensitivity selection
✓✓ Front panel interactive LCD display for local access and configuration
✓✓ SmartCard reader/writer for firmware updates, preset storage, and Step-up
✓✓ Front-to-rear airflow cooling with variable-speed fan, temperature controlled
✓✓ Full protection circuitry: over/under AC voltage; troublesome signals (clipping,
VHF, long-term RMS); DC; thermal ; short circuit; mute at power on/off
✓✓ Full four years warranty
✓✓ Options & accessories:
▶▶ SmartCard, for firmware updates or preset storage; Step-up card
▶▶ Armonía Pro Audio Suite, free at www.armoniasuite.com
▶▶ Power Control Hub, RS485 distribution and remote Power-on unit for up
to eight K Series amplifiers, 19”/1 RU
▶▶ KDSP Board, for DSP integration:
-- Optional top-grade DSP with high dynamic range and extensive feature set
-- Separate input/output EQ’s with numerous filters of various types up to
48 dB/oct (IIR), linear phase (FIR), and hybrid (FIR+IIR)
-- Sophisticated limiter system comprising peak, RMS voltage, RMS current,
and TruePower™ limiting, speaker wire compensation with Active
DampingControl™, LiveImpedance™ load monitoring with musical signal
-- AES3 digital audio signal input via XLR
▶▶ KAESOP Board (Ethernet/AES3 interface)
1) Serial communication is relatively slow; hence, max 4 amps can be monitored simultaneously, and information
is reduced, e.g. no signal level metering.
2-Channel Power Amplifier for High-Performance Touring
Number of channels
Output power
EIAJ Test Standard, 1 kHz, 1% THD
stereo mode
4 Ω/ch
3,000 W
2 Ω/ch
4,800 W
Max output voltage / current
AC Mains Power
Power supply
Operating voltage
Power factor cos (φ)
Consumption / current draw
I/8 of max output power @ 4 Ω
I/4 of max output power @ 4 Ω
8 Ω/ch
1,500 W
169 Vpeak / 125 A peak
mono-bridged mode
9,600 W
6,000 W
Universal, regulated switch mode with PFC (Power Factor Correction)
100-240 V ±10%, 50/60 Hz
>0.95 @ >500 W
@ 230 V
84 W
938 W
1,875 W
@ 115 V
1.03 A
4.8 A
8.7 A
91 W
938 W
1,875 W
1.11 A
17.4 A
Environmental operating temperature
Thermal dissipation
I/8 of max output power @ 4 Ω
I/4 of max output power @ 4 Ω
0° - 45° C / 32° - 113° F
Fan, continuously variable speed, temperature controlled, front to rear airflow
546 BTU/h
138 kcal/h
1,069 BTU/h
270 kcal/h
1,593 BTU/h
402 kcal/h
Gain, selectable
Input Sensitivity @ 8 Ω
Max input level
Frequency response
S/N ratio (amplifier section)
Crosstalk separation
Input Impedance
Slew rate
Damping factor @ 8 Ω
DSP (optional)
A/D converter
D/A converter
Digital audio input
Delay for time alignment
Crossover filters
Output equalizer
Input equalizer
Cable compensation network
26 dB
5.50 V
27 dBu
-52 dBu
29 dB
32 dB
3.90 V
2.75 V
24 dBu
21 dBu
-55 dBu
-58 dBu
20 Hz - 20 kHz (1 W @ 8 Ω, ±0.5 dB)
>110 dBA (20 Hz - 20 kHz, A weighted)
> 66 dB @ 1 kHz
10 k Ω balanced
<0.5% from 1 W to full power (typically <0.05%)
50 V/µs @ 8 Ω, input filter bypassed
>5000 @ 20-200 Hz
35 dB
1.95 V
18 dBu
-61 dBu
Dual 24bit 96 kHz Tandem® architecture with 127 dBA of dynamic range and THD <0.005% (20 Hz - 20 kHz)
Dual 24bit 96 kHz Tandem® architecture with 122 dBA of dynamic range and THD <0.003% (20 Hz - 20 kHz)
8 MB (RAM) plus 2 MB (flash for presets)
50 stored locally + 150 stored on a smartcard
AES3 (glitchless fallback to analog audio selectable)
up to 4 s on the input section, up to 32 ms per output, sample-by-sample stepping
Butterworth, Linkwitz-Riley, Bessel, Arbitrary Asymmetric, 6dB/oct to 48dB/oct (IIR), linear phase (FIR), hybrid (FIR+IIR)
16 fully parametric filters per channel, IIR: peaking, hi/lo shelving, hi/lo pass eq, band pass, band stop, all pass. Custom FIR up to
384 taps @ 48 or 96 kHz
Three layers (PEQ, raised cosine, shelving), 32 filters each + group filters, up to 256 filters per channel
up to 2 Ω negative/positive wire compensation (Active DampingControl TM)
Power limiter (TruePower™, RMS voltage, RMS current) + Peak Limiter
Front Panel
Power switch
Network data port AESOP incl. AES3
7 meter LEDs: 5 x green, 1 x yellow, 1 x red, top yellow and red show alarm with protect description on LCD panel
4 pushbuttons, function depending on user menu
Mains switch
2 x RJ45 with activity LEDs
SmartCard reader/writer for firmware updates and preset storage. Easily accessible dust filter foam behind two steel covers
Rear Panel
Audio signal input connectors
Loudspeaker output connectors
Network data port RS485
Aux voltage
AC mains
Analog: 2 x balanced Neutrik® Combo XLR female/1/4” jack; AES3: use channel 2 XLR
2 x Neutrik® Speakon NL4MD
1 x RJ45 with 2 recessed rotary encoders for ID selection
1 x 2-pin Phoenix P. 3.81mm
AMP CPC 45A on rear panel; AMP CPC 45A connector mounted on a 3 x 5mm2 (10AWG) cable
1 x link switch, linking analog inputs 1 and 2; AES3/analog input switch
W 483 mm / 19”, H 44.5 mm / 1 RU, D 475 mm / 18.7”
Data is subject to change without notice.
© 2012 Powersoft • All rights reserved.
Powersoft • Via Enrico Conti, 5 • 50018 Scandicci (FI) • Italy
+39 055 735 0230 • sales@powersoft.it • www.powersoft-audio.com
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