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The input sensitivity of the Power amplifier is 530mV's. Connection is made via the two RCA Phono
(Cinch) type sockets on the rear panel marked - INPUT, which are wired in un-balanced mode.
If a Bridged Mono application is required, it is necessary to use both left and right inputs as a form of
balanced mono input, carrying high and low signal. Read specific instructions accompanying the plug-in
bridging board, which plugs into the P42 Pre-amplifier.
POWER SUPPLY CONNECTION TO CREEK P42 PRE-AMPLIFIER
If you choose to use the A42 Power amplifier with the P42 Pre-amplifier, it is possible to supply the power to
the P42 via an umbilical interconnect that supplies +30 & -ˆ’30V's DC. The appropriate interconnect will be
supplied with the P42. The interconnect should be plugged into the power supply socket and the
respective socket on the Pre-amplifier. This connection must only be used to power the Creek P42 Pre-
amplifier.
OPERATING THE A42
Make sure that the unit is on a suitable table or Hi -Fi equipment cabinet. It is important to allow adequate
ventilation to the heatsink, in the centre of the unit. Av oid obstruction of the ventilation slots on the top cover.
It may be necessary to place the amplifier on the top of ot her equipment to allow for this. To switch - on the
unit press the switch marked POWER on the right hand side of the front panel. To protect the loudspeakers
connected to the amplifier from dangerous DC voltages, an internal 10 Amp relay switches off the outputs on
switch-on and in the case of a failure etc. A delay of about 3 seconds will be noticed initially and the turn-off
should be instantaneous. To indicate the state of the amplifier, the POWER LED indicator, when the
amplifier is first switched on, should glow less bri ghtly than when the Amplifier reaches operating condition,
at which time the relay will drop in and the LED will switch to full brightness. If a fault condition is noticed the
relay will switch both speaker outputs off and the POWER indicator will switch to low brightness.
SPECIFICATION POWER OUTPUT ONE CHANNEL 55 Watts into 8-„¦ POWER OUTPUT BOTH CHANNELS 50 Watts into 8-„¦ POWER OUTPUT ONE CHANNEL / 75 Watts into 4-„¦ / - NOT RECOMMENDED FOR USE INTO MORE THAN ONE PAIR OF 4 -„¦ LOUDSPEAKERS POWER OUTPUT BRIDGED MONO (not suitable for use into less than 8 -„¦) 150 Watts into 8-„¦ - Bridged operation can only be enabled by use of th e appropriate driver board in the P42 pre-amplifier TOTAL HARMONIC DISTORTION <0·03% 20 Hz to 20 kHz FREQUENCY RESPONSE 3 Hz to 25 kHz -1 dB INPUT SENSITIVITY 450mVs @ 50Watts POWER AMP RISE TIME 40V's per µS SIGNAL TO NOISE RATIO -105 dB's SEPARATION -80 dB's at 1 kHz POWER CONSUMPTION 45 W at idle '' '' '' 220 W full power 10% THD WEIGHT 5·3 Kgs, 12 lbs SIZE 420 x 60 x 230 mm, 16·5 x 2·4 x 9'' ( MAINS VOLTAGE AND FREQUENCY IS INTERNALLY SET FOR THE COUNTRY OF USE )
Your A42 amplifier is designed to give you years of reliable us e. However, it is necessary to take care of
your possession, so never overheat it or short out the speaker connections. If an adjustment is needed, it is
always advisable to return it to the supplying dealer for his expert help. If you are unfortunate enough to
need service work to be carried out on your amplifie r, it should be returned to your dealer or the
manufacturer in the original packing material if possible.
2 Bellevue Rd, Friern Barnet, London, N11 3ER. Tel +44 (0) 20 8361 4133. Fax +44 (0) 20 8361 4136
