Only 8kg/17.6lbs light, the K2 is the ideal companion for where space, weight, and uncompromised sound quality matter.
Per Step-up card a K2 can be upgraded to become a K3 – more power without replacing the entire amplifier.
Click here to go to the K Series Step-Up page.
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 K2 is also available with KDSP board and KAESOP Ethernet/AES3 interface: the K2 DSP+AESOPamounts 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 Armonía Pro Audio Suite™ (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: 8 – 12 kg (17.6 – 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 Armonía Pro Audio Suite™
- Interface available for MediaMatrix, Crestron, AMXcontrol, Q-SYS and monitoring systems
| General | |||||||||||||||||||||||||||||
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| Number of channels | 2 | ||||||||||||||||||||||||||||
| Output power | Single channel mode | Bridge mode | |||||||||||||||||||||||||||
| 2 Ω | 4 Ω | 8 Ω | 4 Ω | 8 Ω | |||||||||||||||||||||||||
| 2400 W | 1950 W | 1000 W | 4800W | 3900W | |||||||||||||||||||||||||
| Max output voltage / current | 140 Vpeak / 102 Apeak | 100 Vpeak | 140 Vpeak | 280 Vpeak | |||||||||||||||||||||||||
| 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** | 115 V | 230 V | |||||||||||||||||||||||||||
| Idle | 69 W | 1.2 A | 88 W | 1.35 A | |||||||||||||||||||||||||
| 1/8 of max output power @ 4 Ω | 609 W | 6.3 A | 609 W | 3.1 A | |||||||||||||||||||||||||
| 1/4 of max output power @ 4 Ω | 1219 W | 11.4 A | 1219 W | 5.7 A | |||||||||||||||||||||||||
| Thermal | |||||||||||||||||||||||||||||
| Operating temperature range | 0° – 45° C – 32° – 113° F | ||||||||||||||||||||||||||||
| Thermal dissipation** | 115 V | 230 V | |||||||||||||||||||||||||||
| Idle | 382 BTU/h | 96.3 kcal/h | 382 BTU/h | 96.3 kcal/h | |||||||||||||||||||||||||
| 1/8 of max output power @ 4 Ω | 722 BTU/h | 181.9 kcal/h | 722 BTU/h | 181.9 kcal/h | |||||||||||||||||||||||||
| 1/4 of max output power @ 4 Ω | 1062 BTU/h | 267.6 kcal/h | 1062 BTU/h | 267.6 kcal/h | |||||||||||||||||||||||||
| AUDIO | |||||||||||||||||||||||||||||
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| Frequency response | 20 Hz – 20 kHz (±0.5 dB) @ 1 W, 8 Ω | ||||||||||||||||||||||||||||
| S/N ratio | > 106 dB (20 Hz – 20 kHz, A weighted) | ||||||||||||||||||||||||||||
| Crosstalk separation | > 70 dB @ 1kHz | ||||||||||||||||||||||||||||
| THD+N | < 0.2% from 1 W to full power (typically < 0.05%) | ||||||||||||||||||||||||||||
| IMD | < 0.2% from 1 W to full power (typically < 0.05%) | ||||||||||||||||||||||||||||
| Input impedance | 10 kΩ balanced | ||||||||||||||||||||||||||||
| Slew rate | 50 V/μs @ 8Ω, 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 or arbitrary asimmetric: 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 – |
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| Connectors | |||||||||||||||||||||||||||||
| AC main | 1 x IEC C20 connector – 20 A max (region-specific power cord provided) | ||||||||||||||||||||||||||||
| Audio signal input | 2 x XLR – Signal input 1 x Analog/Digital input – Switchable Analog line/AES3 digital input on channel 2 |
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| Auxiliary voltage | 1 x 2 pin Phoenix MC 1.5/2-ST-3.81 – External voltage connector (DSP version only) | ||||||||||||||||||||||||||||
| Audio out (link through) | 2 x XLR – Signal output (link through) | ||||||||||||||||||||||||||||
| Loudspeakers | 2 x speakON – Neutrik NL4MD | ||||||||||||||||||||||||||||
| Network/data | 2 x Rj45 socket – Ethernet + AESOP connection (DSP+AESOP version only) 2 x Rj45 socket – Ethernet + AESOP connection (DSP+AESOP version only) 1 x Rj45 socket – RS485 data connection (non-DSP version) |
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| Rear panel | |||||||||||||||||||||||||||||
| Indicators and Controllers | 1 x Push-button – Link channel pair 1 x Push-button – Toggle ANALOG input/AES3 input on selected connector |
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| Construction | |||||||||||||||||||||||||||||
| Dimensions (L x H x W) | 483 mm x 44.45 mm x 380 mm (19.0 in x 1.8 in x 15.0 in) | ||||||||||||||||||||||||||||
