Creek Audio OBH-15 Operating Instructions

CREEK OBH-15 SPECIFICATION

GAIN
FREQUENCY RESPONSE
SIGNAL TO NOISE RATIO
TOTAL HARMONIC DISTORTION
R1AA DEVIATION
Output
OUTPUT IMPEDANCE
INPUT SENSITIVITY / IMPEDANCE
INPUT SENSITIVITY / IMPEDANCE
OVERLOAD MARGIN
MATES WELL WITH MM CARTRIDGES 2.5 mV - 5 mV output
MATES WELL WITH MC CARTRIDGES
DIMENSIONS
POWER SUPPLY VOLTAGE
Supplied with an OBH-2 High Grade Regulated Power Supply,
220-240V 50Hz or 110-120V 60Hz
Creek Audio Ltd reserves the right to change or modify the specification
of its products without prior warning.
Creek Audio Ltd
12 Avebury Court, Mark Road, Hemel Hempstead HP2 7TA England
Tel: + 44 (0) 1442 260146
E-mail: info@creekaudio.co.uk
MM MC
37 dB 56 dB
20 Hz to 20 kHz ± 0.25 dB
- 83 dB - 75 dB
< 0.03% < 0.05%
± 0.5% ± 0.5%
250 mV 250 mV
Ω Ω Ω Ω
<100 <100
Ω Ω
3.5 mV/ 47 K / 220 pF
Ω Ω
0.5 mV/ 1000 / 3300 pF
22 dB 20 dB
0.5 mV - 1 mV output
150 x 100 x 66 mm
24V DC 30 mA
Designed and made in the UK.
Fax: + 44 (0) 1442 243766
Internet: www.creekaudio.co.uk
Creek OBH-15
The function of the OBH-15 is to boost the level and correct the frequency response
of a low level signal coming from a phono pick-up on a conventional turntable. The
signal required by most modern amplifiers is described as being 'LINE' level, which
is, in technical terms, between 200 and 500 milli-Volts with a flat frequency response.
Unless your amplifier has a specific 'Phono' or Disc input, the level will be too low
and the frequency response will be wrong. The OBH-15 is designed to boost the sig-
nal and introduce an R.I.A.A. frequency response characteristic.

INPUT AND OUTPUT CONNECTION

The output from the turntable is normally terminated on
two 'Phono' plugs or RCA jacks. The level is dependent
on the type of cartridge used, and in the case of moving
magnet will normally be around 2 - 5 milli-Volts and for
moving coil - 200 - 500 micro-Volts.
Most MM or high output MC cartridges will be properly
matched by using the OBH-15. By plugging the signal
leads from your turntable into the OBH-15 input, the sig-
nal will be boosted to 'LINE' level at its output.
vent hum pick-up, it may be necessary to join the
turntable's earth lead to the OBH-15 ground terminal.
The output from the OBH-15 can be connected to most
integrated amplifier's and pre-amplifier's line inputs via
a regular Phono to Phono (RCA to RCA) stereo inter-
connect lead.
Operating
Instructions
To pre-