Creek Audio Stereo Amplifier OBH22 User Manual

CREEK OBH-22 SPECIFICATION  
Creek OBH-22  
INPUT IMPEDANCE  
OUTPUT IMPEDANCE  
SEPARATION  
< 20 k  
0 - 20 kΩ  
> 80 dB's @ 1kHz  
0 - 90 dB's  
ATTENUATION  
INPUTS  
3 Stereo pairs, inc Tape  
2 Stereo pairs, 1 fixed, 1 variable  
> 90dB's  
Operating  
Instructions  
OUPUTS  
RELAY MUTING FACTOR  
POWER REQUIREMENTS  
POWER CONSUMPTION  
DC CONNECTOR TYPE  
INPUT & MUTE INDICATION  
SIZE  
24v @ 60 mA  
2W max  
2.1 mm female DC jack  
2 LED  
150 x 100 x 66 mm  
6” x 4” x 2 1/2”  
610 g, 1.3 lb  
Thank you for purchasing the OBH-22 Infra-red remote control passive Pre-Amp.  
You are now in possession of a State of the Art product. The functions and operation  
of the OBH-22 are extremely simple. However, the following notes are provided to  
explain all aspects of its design and use.  
WEIGHT  
Creek Audio Ltd reserves the right to change or modify  
the specification of its products without prior warning.  
OVERVIEW  
The function of the OBH-22 is to provide input selection  
and volume adjustment to your Hi-Fi system from your  
armchair, via infra-red remote control.  
Designed and made in the UK.  
The unit consists of a high quality motorised volume  
potentiometer, and two stereo relays which select the  
desired input and 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  
ARC53 Remote  
Creek Audio Ltd  
to indicate the status and mode of operation.  
Handset  
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-Amp, provided the  
sensitivity of the power amp that is being used is high  
enough to be driven directly from the source. i.e. CD or  
Tuner etc.  
12 Avebury Court, Mark Road, Hemel Hempstead HP2 7TA, England  
Telephone: +44 (0) 1442 260146  
Fax: +44 (0) 1442 243766  
 

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