The awesomely Powersoft/Void K20 available (one unit). Been racked as part of ex-install in very good condition inside and out. Well maintained and looked after. All works great, fully tested and QC by GDS. Couple of small cosmetic marks/scuffs but as you can see in the images these are very small and slight.
Description
The K20 impresses with up to 18,000 W in a single rack space, making it probably the most powerful amplifier at its size, and definitely the most powerful model within the K Series, the most advanced line of power amplifiers from Powersoft.
Ideal for subwoofers requiring relatively high continuous power and ample headroom, the K20 is the unique result of smart design, attention to sound quality, and extremely high efficiency with reliability, portability, and adaptability in mind.
In use worldwide by leading touring and event sound companies, K Series is preferred among the top ranking system designers, sound engineers, and system techs on the road for making their lives easier, giving them reliable premier-grade power and headroom in the smallest possible package size.
Fully digitally controlled and with a serial PC communication port as standard, the K20 is also available with KDSP board and KAESOP Ethernet/AES3 interface: the K20 DSP+AESOP amounts to a fully integrated, highly sophisticated yet easy to use power source including state-of-the-art sound shaping and system management capabilities, remotely controllable via Powersoft's ArmoníaPlus (Interface available for MediaMatrix, Crestron, AMX, Q-SYS control and monitoring systems).
Power supply
- Advanced switch-mode worldwide operating power supply technology for high performance and compact size
- Power Factor Correction PFC for extremely low mains consumption and extremely wide mains operating range
- Low Inrush Limiting reduces AC inrush current, removing the need for expensive power sequencers
Protections
Fully protected circuit design with:
- Ac protection: shut down power supply when AC mains voltage is outside operating range
- Clip limiter: prevents severely clipped waveforms from reaching loudspeakers, while still maintaining full peak power output
- DC protection: protects against infrasonic signal at the outputs
- VHF protections: protects the loudspeakers against non audible, strong, non musical high frequency signals
- Short circuit protection: protects the amplifier from short circuit or other stressful events for the output circuits with automatic protection reset
- Long term limiter: protects the loudspeaker against steady long term rms (non audio) signals reducing maximum output
- Thermal protection: output stages operating temperature up to 80 °C (176 °F)
- Temperature controlled continous variable speed fan, front to back airflow
- Temperature forecast with LCD traced historical behaviour
General
- Fixed frequency switchmode output stage for high grade sound accuracy
- Compact size - all models only 1 RU for reduced rack cost and space
- Light weight - for easier racking and shipping: 12 kg (26.5 lbs) according to configuration
- Combo XLR/6.3mm jack Neutrik input connectors with link capability
- AES3 digital input*
Settings
- LCD matrix interactive display
- Comprehensive-user friendly front panel display menu
- Built-in defeatable clip limiters for each channel
- Digital gain-attenuator control
- Defeatable gate selection for each channel
- User selectable gain/sensitivity
- User selectable maximum output power for each channel
- User selectable maximum mains current draw
- Lockable set-up by user selectable access key code
- Built in remote control via the RS-485 interface provides full diagnostic, operational setting and system monitoring
Monitoring
- Hardware monitor available for fast local diagnostic
- Load impedance measurement / display for each channel
- Output power measurements / display for each channel
- Mains voltage and current measurements / display
- Downloadable log file of functional fault events with time related trace
- Smart Card settings, parameters and upgrades functionality
Digital Signal Processing*
- Analog Devices SHARC® DSP architecture
- AD/DA converter: dual 24bit @ 96 kHz Tandem® architecture, 127 dB dynamic range, per channel
- Input/output independent equalizers per channel providing PEQ, raised cosine, shelving IIR filters as well as custom output FIR filters
- Delay up to 1 s for time alignment
- Active DampingControl™ for cable compensation
- Power limiter (TruePower™, RMS voltage, RMS current) + Peak Limiter
Remote management*
- Control and monitoring through ArmoníaPlus
- Interface available for MediaMatrix, Crestron, AMXcontrol, Q-SYS and monitoring systems
Specifications
Void/Powersoft K20 2-Channel High Performance DSP Power Amplifier
General
- Number of channels 2
- Output power
- Single channel mode
- 2 Ohms 9000 W
- 4 Ohms 5200 W
- 8 Ohms 2700 W
- Bridge mode
- 4 Ohms 18000W
- 8 Ohms 10400W
- Single channel mode
- Max output voltage / current 225 Vpeak / 125 Apeak Single Channel / 450 Vpeak Bridge Mode
AC Main Power
- Power supply Universal, regulated switch mode with PFC (Power Factor Correction)
- Nominal power requirement 100-240 V ±10%, 50-60 Hz
- Operating voltage 90 V - 264 V
- Power consuption Idle - 88 W 1.17 A
- 1/8 of max output power @ 4 Ohms 1625 W 7.9 A
- 1/4 of max output power @ 4 Ohms 3250 W 14.7 A
Thermal
- Operating temperature range 0° - 45° C - 32° - 113° F
- Thermal dissipation Idle 682 BTU/h 171.9 kcal/h
- 1/8 of max output power @ 4 Ohms 1590 BTU/h 400.7 kcal/h
- 1/4 of max output power @ 4 Ohms 2498 BTU/h 629.5 kcal/h
Audio
Gain 26 dB 29 dB 32 dB 35 dB Input sensitivity 7.37 V 5.22 V 3.68 V 2.62 V Max input level 27 dBu 24 dBu 21 dBu 18 dBu Gate -52 dBu -55 dBu -58 dBu -61 dBu - Frequency response 20 Hz - 20 kHz (±0.5 dB) @ 1 W, 8 Ohms
- S/N ratio > 110 dB (20 Hz - 20 kHz, A weighted)
- Crosstalk separation > 66 dB @ 1kHz
- THD+N < 0.5% from 1 W to full power (typically < 0.05%)
- IMD < 0.5% from 1 W to full power (typically
- Input impedance 10 kO balanced
- Slew rate 50 V/µs @ 8O, input filter bypassed
- Damping factor > 5000 @ 20-200 Hz
DSP
- DSP architecture Analog Devices SHARC® DSP
- AD Converter Dual 24 bit 96 kHz Tandem® architecture with 127 dBA of dynamic range and THD
- DA Converter Dual 24 bit 96 kHz Tandem® architecture with 122 dBA of dynamic range and THD
- Internal precision 40 bit floating point
- Firmware Network upgradable firmware
- Memory/presets 8 MB (RAM) plus 2 MB flash for presets / 50 stored locally + 150 stored on Smart Card
- Latency 6.0 ms fixed latency architecture
- Input equalizer Three layers (PEQ, raised cosine, shelving), 32 filters each + group filters, up to 256 filters total
- Output equalizer 16 fully parametric filters per channel, IIR: peaking, hi/lo-shelving, hi/lo-pass, band-pass, band-stop, all-pass. Custom FIR up to 384 taps @ 48 or 96 kHz
- Crossover Butterworth, Linkwitz-Riley, Bessel: 6 dB/oct to 48 dB/oct (IIR), linear phase (FIR), hybrid (FIR-IIR)
- Delay up to 4 s on input section; up to 32 ms per output, sample-by-sample stepping
- Limiters Power limiter, TruePower™, RMS voltage, RMS current + Peak limiter
- Damping control Active DampingControl™
Front panel
- Indicators and Controllers
- 2 x LED bar - Signal level and over-temperature protection
- 4 x Push-button - Setting operating parameters
- 1 x Display - Settings and monitoring
- 1 x Power switch -
- Connectors
- AC main 1 x AMP CPC 45A connector - 45 A max (region-specific power cord provided)
- Audio signal input
- 2 x Combo Jack/XLR-F - Signal input
- 1 x Analog/Digital input - Switchable Analog line/AES3 digital input on channel 2
- Loudspeakers 2 x speakON - Neutrik NL4MD
- Network/data
- 2 x Rj45 socket - Ethernet + AESOP connection (DSP+AESOP version only)
Rear panel
- Indicators and Controllers
- 1 x Push-button - Link channel pair
- 1 x Push-button - Toggle ANALOG input/AES3 input on selected connector
Construction
- Dimensions (L x H x W) 483 mm x 44.45 mm x 475 mm (19.0 in x 1.8 in x 18.7 in)
- Weight 12 kg (26.5 lb)
