Creek Audio OBH22 - Manual (Page 2)

MAINS CONNECTION cause overheating, or internal mains transformers which might induce hum pick-up.
When unpacking the module please keep the packing material in a safe place for Very heavy signal interconnects may cause the OBH 22 to tip backwards. There are
possible future use. two slots on the bottom that could be used to lock it in position. Do not obstruct the IR
sensor on the front panel.
OPERATING THE OBH 22 BY REMOTE CONTROL
The OBH 22 has three line inputs including tape, which can be selected either from the
front panel buttons or Creek SRC2 handset which is now supplied with the product.
The appropriate LED above each button will indicate which one is selected. Volume
level can be adjusted manually from the control knob on the front panel or by using the
Remember, VOL + or VOL - buttons on the remote handset. As the SRC2 is a system remote control,
do not overload the mains wall socket with too many plugs or adaptors. If in doubt, it is necessary to make sure it has been selected to control amplifier commands, by first
please contact your supplying dealer or a qualified electrician. The OBH-22 draws pressing the ivory coloured Amp button in the middle.
less than 2 Watts of power from the mains under all conditions so it can safely be left
switched on without significantly increasing your electricity bill.
Pressing the Mute button on the front panel or remote handset will short the signal to
ground and the LED indicator will light above the Mute button. To un-mute, press the
Mute button again or the volume up button. Pressing the volume down will not un-mute
INPUT and OUTPUT CONNECTIONS
the signal, but it is useful in allowing a lower level to be set before un-muting the signal. Line 1 and 2 are identical. The output from a CD, Tuner, AV or
from an OBH 15 or OBH 18 phono pre-amp can be
To select the Tape input or to monitor a tape recording press button ‘Aux 2’ (button 5 on connected to either of them. For tape machines, use the
the SRC2). The LED indicator above the Tape button on the OBH 22 will light. Press Tape input and output - the tape monitor function will allow
button ‘Aux 2’ again to revert to the line input. recordings to be made and played back. The output from the
OBH 22 should be connected to a power amplifier with
The tape button and all other buttons on the SRC2 handset are reserved for other suitable sensitivity (gain). Remember, the OBH 22 will not
Creek remote controlled products. increase the signal from input to output.
CAUTION VOLUME LEVEL
Your OBH 22 amplifier is designed to give you years of reliable use. However, it is The volume control is used to alter the relative level of the sound output from the
necessary to take care of your possession, so never overheat and only use the amplifier. It is important to realise that the volume control only acts to reduce, or
recommended Creek Uni power supply. attenuate, the incoming signal to the power amplifier stage. The maximum power of an
amplifier is available only if the level of signal available from line level equipment is
The OBH 22 is designed to comply with European EMC requirements. However, it sufficient to drive it to clipping, which will be different from one amplifier to another. The
should be noted that it is not possible to guarantee faultless operation of the volume control is therefore also used to balance the level from one piece of equipment
equipment if it is used close to the source of high powered radio transmissions, such as to another.
can be found in mobile telephones or CB radio etc. Care should also be taken to place it
away from the source of mains interference caused by mains transformers in other
If it is found necessary to have the volume control set to a position which is
equipment. Electrical switching noises from domestic or industrial heating systems, considered to be high before the desired level of volume is obtained, it does not
conducted periodically down the mains supply, can sometimes be amplified and necessarily mean that the amplifier is having to work too hard or "flat-out". Consult your
present themselves as a click or a thump through a Hi-Fi system. dealer if you need more advice. Always have the volume control set at minimum
(counter-clockwise) when switching your amplifier on and off, to avoid thumps or
If you suspect that a fault has developed, do not remove the cover plate. There are no sudden loud noises.
user serviceable parts inside. If you are unfortunate enough to need service work
carried out on the OBH 22, it should be returned to your dealer for his expert help, in the
POSITIONING OF THE OBH-22
original packing material if possible.
The OBH 22 needs to be powered from its adaptor to operate the volume, input and
mute functions via the remote control. It will work best if placed on a suitable hard
surface or Hi-Fi equipment cabinet. Should it be necessary to place the OBH 22 on the
. top of other audio or video equipment, avoid obstructing any ventilation slots that could
In common with all electrical appliances, the OBH 22 requires a
power supply.The requirement for the OBH 22 is for 24 Volts DC at 30 milli-Amps
current, minimum. A custom Creek power supply (Creek-Uni) has been provided and
this must be connected via the DC inlet on the rear panel of the OBH 22.
The power supply which has been provided is a switchable supply with a universal input
range of 100 – 240 Volts. The Creek-Uni power supply is supplied with a pack of
universal plug fittings to adapt for Europe, U.K. and the Far-east, USA and Australia.
Choose the correct fitting for your country of use and simply snap in place.