The function of the Creek OBH 22 passive pre-amplifier is to provide input selection and
volume adjustment to a hi-fi system from an armchair, via infra-red remote control. The unit
can also be controlled directly from the front panel.
 
The OBH 22 consists of a high quality motorised volume potentiometer, and two stereo relays
which select the desired input plus tape output, together with a muting relay that can short the
signals to ground.  
 
A built-in micro-controller decodes the infra-red signals transmitted by the handset and translates
them into commands which activate the motorised potentiometer and the muting and input
selection relays.  
 
After each operation, the micro-controller turns itself off to avoid any possibility of interfering
with the main music signal.  LED’s are used to indicate the status and mode of operation.  
 
The OBH 22 is purely passive and does not introduce any gain or distortion into the signal path.
It is therefore suitable to be used as a control pre-amplifier, provided the sensitivity of the power
amplifier that is being used is high enough to be driven directly from the source. i.e. CD player
or tuner etc.  
 
The volume control can be operated manually at any time, whether the OBH 22 is powered or
not, but without power only Line 1 can be utilised.

< 20 kW
20 kW
> 80 dB's @ 1kHz
0 - 90 dB's
3 Stereo pairs, inc Tape
2 Stereo pairs, 1 fixed, 1 variable
> 90dB's
24v @ 60 mA
2W max
2.1 mm female DC jack
2  LED
Silver
100 x 150 x 66
610 g
Creek OBH Uni
Creek System Remote
Two years original purchaser only
Warranty valid in country of purchase

Specificaton
Input impedance
Output impedance
Separation
Attenuation
Inputs
Outputs
Relay muting factor
Power requirement
Power consumption
DC connector type
Input and mute indication
Finish
Size
Weight
Power supply
Remote handset
Warranty

Copyright ©  Epoz 2011