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To increase the gain on these outputs it is necessary to purchase extra active Output Module/s as
required, one per stereo output. Your dealer can adv ise. To prevent unwanted noises , the active
Output module has a muting circuit that shorts the signal to ground when the pre-amp is switched on
and off. Caution: The outputs that have only Link PCB's fitt ed do not mute the output on switching-on or
off. A s pec ial Bridging module is also available that will allow tw o power amplifiers to be connected in
bridge mono mode, providing much higher output power.
Tape output is provided on sockets Tape Output 1 and 2 and has a 1K -„¦ impedance, which is low
enough to drive most machines. As the outputs are elec trically buffered it is not possible to load the
normal signal path of the pre-amplifier by using one or two low impedance tape recorders.
Front panel controls
Volume Listen Record Balance Phones
Power
12 3 4 5 6
Aux1CDTunerAux2Tape1 Tape2 Tape2Tape1Aux2TunerCDAux1
P42Pre-amplifier
To select a source component you wish to listen to, rotate s elec tor ( 1) to the desired input. To record
from a source component, rotate selector (2) to the desired input. This two control facility allows you to
listen to a different input from one you may want to record . If you want to record from one tape recorder
to another it is necessary to select the source recorder on (2) and monitor the recording on (1) .
Balance (3) and Volume (5) controls alter the amount of signal a llowed through the pre-amplifier prior to
being amplified by the Output module. Normally, the (3) should be set with the marker in the vertical
position for equal sound level from each channel. If more or less sound level is required from one
channel, turn the control either way until the desired bal ance is achieved. The Volume control functions
as an attenuator for the signal, reducing the level from the maximum possible. It does not boost the
signal level.
The Phones socket (4) is inoperative until configured by the deal er. A plug-in module is required to
provide the amplification for headphones. The Phones output has an impedance of 220 -„¦ and the
amplification factor is determined by the impedance of the phones used. Control the level required by the
volume control. When the Phones socket is used the active Output modules will be muted.
TECHNICA L SPECIFICA TION TOTA L HA RMONIC DISTORTION < 0.01% 20 Hz to 20 kHz FREQ UENCY RESPO NSE 0 Hz to 35 kHz -1dB LINE INPUTS X 4 at 47k -„¦ TA PE LO OPS X 2 OUTPUTS X 3 Maximum TA PE O UTPUTS X 2 at 1k -„¦ GA IN From OUTPUT 2 & 3 w ith LINK PCB installed X 1 (0dB) GA IN From OUTPUT 1 sw itchable x 2 (6dB), X 3 (9dB) & X 4 (12dB) MA XIMUM OUTPUT VOLTA GE per Outut module 6V A T 10k -„¦ load OUTPUT IMPEDA NCE 1K -„¦ SIGNA L TO NOISE RA TIO -105dB for 600mV output SEPA RA TIO N -80 dB'S at 1 kHz POWER CONSUMPTION 7W DC (15W A C mains v ersion) POWER REQUIREMENTS +35 & -35V's DC from A 42 WEIGHT PA CKED 3.7 Kgs, 9 lbs SIZE 420 X 60 X 230 mm 16.5 X 2.4 X 9''
CREEK AUDIO LTD, 2 BELLEVUE ROAD, FRIE RN BARNET, LONDON, N11 3ER, ENGLAND.
Tel: (44) 0 181 361 4133
Fax: (44) 0 181 361 4136 email : mcreek@ibm.net
P42inst1
