KPA 2220 - High Power Amplifier
| Vintage |
| |
| General Description |
| The KPA series amplifiers are specifically designed for fixed installations where high sonic performance and ease of installation and management are paramount. Each KPA amplifier is equipped with analogue and K8 bus digital inputs. Used in conjunction with K8 products, the KPA series amplifiers provide a flexible, easy to manage signal and power train for houses of worship, performance halls, arenas and stadiums.
Output Power Specifications
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Stereo Mode |
Bridged Mode |
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2 Ohm |
4 Ohm |
8 Ohm |
4 Ohm |
8 Ohm |
16 Ohm |
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KPA 2400 |
6000 |
4000 |
2000 |
12000 |
8000 |
4000 |
|
KPA 2290 |
4500 |
2900 |
1450 |
9000 |
5800 |
2900 |
|
KPA 2220 |
3000 |
2200 |
1100 |
6000 |
4400 |
2200 | Watts per channel, EIAJ measurement conditions
K8 Control Features
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| Control Functions via K8 |
Power on/off, optional DSP all settings, thermal limiting, input current limiting, clip limiting, output voltage limiting, average output power limiting |
| Monitoring Functions via K8 |
Load impedance, temperature, input signal level, output voltage, output current |
| Additional Amplifier Protection |
Load short shutdown and self recovery, thermal limiting, DC and infrasonic and ultrasonic frequency signal protection |
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| Features |
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|  | K8 system compatible
| | Power factor correction
| | Low cost of operation and ownership
| | Load monitoring
| | Comprehensive protection feature set
| | Full status monitoring
| | Small and light weight
| | High efficiency
| | Downloadable status log
| | Single cable connection for digital audio and control
| | Optional advanced function DSP |
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| Delivery Includes |
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| | 1x KPA 2220
| | 1x Operation manual |
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| Technical Data |
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| Power Requirements |
|
| Power supply |
115 - 230 V (±15%) |
| Power factor |
More than 0.95 from 500 W to full power |
| Operating temperature |
0° C, 45° C (32° F, 113° F) |
| Weight |
12 kg (26.5 lbs) |
| Height x width x depth |
44 (1HE) x 483 (19" EIA Standard rack) x 475 mm,
1.75" (1RU) x 19" (EIA Standard rack) x 18.7" |
| Audio Section |
|
| Bandwith (1 W, 8 Ohm) |
20 Hz-20 kHz ±0,2 dB |
| Damping factor (8 Ohm) |
(20 Hz - 200 Hz) > 5000 |
| Slew Rate (8 Ohm) |
50 V/uS (input filter bypassed) |
| S/N ratio |
>110 dB |
| Distortion THD |
Max < 0. 5 % from 1 W to full power (typically < 0.05 %) |
| Intermodulation SMPTE |
Max < 0.5 % from 1 W to full power (typically < 0.05 %) |
| Intermodulation DIM |
Max < 0.5 % from 1 W to full power (typically < 0.05 %) |
| Inputs |
Balanced to ground, XLR female combo jack 6.3mm, K8 digital audio bus, RJ-45 |
| Impedance |
10 Ohm each leg, balanced to ground |
| Gain |
26, 29, 32, 35 dB, user selectable |
| Outputs |
Neutrik 4-pole Speakon (pins 1+ 2+ paralleled, 1-2- paralleled) |
| Link |
K8 loop through, RJ-45, passive bus coupling |
| K8 channel select |
Rotary switch, behind front panel, software override |
| Control |
Directly via K8 bus |
| Termination Switch |
4-position DIP |
| Digital Audio Format |
48 kHz sampling rate, 24 bit, proprietary |
| Latency |
½ millisecond worst case, analogue in to analogue out |
| K8 Rear Panel Indicators |
Sync, Wink | |
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| Accessories |
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| Variants |
| Product |
Article No. |
Designation |
| KPA 2220 |
502675 |
2 Channel Audio Amplifier, 2.2k at 4 Ohms |
| KPA 2290 |
502676 |
2 Channel Audio Amplifier, 2.9k at 4 Ohms |
| KPA 2400 |
502677 |
2 Channel Audio Amplifier, 4k at 4 Ohms | |
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| Measurements |
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| Profile |
| The audio power amplifier shall be 1 EIA rack unit tall and provide 2 channels of amplification at 4000/2900/2200 Watts into 4 Ohms, shall be capable of driving a load down to 2 Ohms, provide power factor correction, have a 1 Watt bandwidth of 20 Hz-20 kHz (+/- 2 dB), have a signal to noise ratio greater than 110 dB, slew rate of at least 50V/microsecond, typical total harmonic distortion of 0.05 % and shall not exceed 0.5 % at full power. Gain shall be user selectable from 26, 29, 32 and 35 dB settings. Inputs shall be K+H K8 system compatible and analog. K8 digital audio channels shall be selectable via rotary switches behind the front panel. Remote monitoring and control shall be via the same cable as digital audio distribution and shall include load monitoring capability. The amplifier shall be capable of inrush current limiting, clip limiting, power supply current draw limiting, output voltage limiting, thermal protection, load short protection and recovery. The audio power amplifier shall be the KPA Series. |
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| Further Images |
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| Software |
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