KPA Series Amplifiers
KPA Series Amplifiers
Two-channel Digital Amps with K8 Bus
KEY FEATURES
TECHNICAL SPECIFICATIONS
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
PRODUCT 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
Klein+Hummel 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.
Power Requirements
Power supply
Power factor
115-230V (±15%)
more than 0.95 from 500W to full
power
Operating temperature 0° C, 45° C (32°F, 113°F)
Weight
12Kg (26.5 lbs.)
External dimensions
Standard rack 19" (W), 1 RU 1.75" (H),
18.7" (D)
Audio Section
Bandwith (1W, 8 Ohm) 20Hz-20KHz ±0,2 dB
Damping factor (8 Ohm) (20Hz-200Hz) > 5000
Slew Rate (8 Ohm)
50V/uS (input filter bypassed)
S/N ratio
>110 dB
Distortion THD
Max < 0.5% from 1W to full power
(typically < 0.05%)
Intermodulation
Max < 0.5% from 1W to full power
(typically < 0.05%)
SMPTE
Intermodulation
DIM
Inputs
Impedance
Gain
Outputs
Max<0.5% from 1W to full power
(typically < 0.05%)
Balanced to ground, XLR female
combo jack 6.3mm,
K8 digital audio bus, RJ-45
10 Ohm each leg, balanced to ground
26, 29, 32, 35dB, user selectable
Neutrik 4-pole Speakon (pins 1+ 2+
paralleled,1-2- paralleled)
OUTPUT POWER SPECIFICATIONS (Watts per channel, EIAJ measurement conditions)
KPA 2400
KPA 2290
KPA 2220
2 Ohm
6000
4500
3000
Stereo Mode
4 Ohm
4000
2900
2200
8 Ohm
2000
1450
1100
4 Ohm
12000
9000
6000
Bridged Mode
8 Ohm
8000
5800
4400
16 Ohm
4000
2900
2200
KPA Series Amplifiers
Two-channel Digital Amps with K8 Bus
K8 CONTROL FEATURES
TECHNICAL SPECIFICATIONS
Control Functions
via K8
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
 
Power on/off, optional
DSP all settings, thermal
limiting, input current
limiting, clip limiting,
output voltage limiting,
average output power
limiting
 Load

Monitoring
impedance,
temperature, input signal
Functions via K8:
level, output voltage,
output current
Additional Amplifier Load short shutdown and
self recovery, thermal
Protection:
limiting, DC and infrasonic
and ultrasonic frequency
signal protection
MECHANICAL DRAWING



 



   

ARCHITECT & ENGINEERING SPECS



 
 
 
 

 

 
 
 

The
audio power
amplifier shall be 1 EIA
rack unit tall and
provide 2 channels of amplification at 4000/2900/2200


K + H Vertriebs- und
Entwicklungsgesellschaft mbH

Auf dem Kessellande Watts
4a
into 4 Ohms, shall be capable of 
driving a load down
to 2 Ohms, provide power factor correction, have a 1

30900 Wedemark, Germany


 a signal to noise ratio greater than 110dB, slew rate of at least
http://www.klein-hummel.com
Watt
bandwidth
of 20Hz-20kHz (+/- 2 
dB), have
  



 

 
 
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

K+H KPA Series.


Klein + Hummel
A Sennheiser Company
1 Enterprise Dr • Old Lyme, CT 06371
(860) 434-9190



 
 










http://www.klein-hummel.com


http://www.klein-hummel.com




K + H Vertriebs- und
K + H Vertriebsund
Entwicklungsgesellschaft
mbH
Entwicklungsgesellschaft
mbH
Auf dem Kessellande
4a
Auf dem Kessellande
4a
30900 Wedemark,
Germany
30900 Wedemark, Germany


  
    






 
 
  

  











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