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VOLUME LEVEL
The volume control, situated on the right hand side of the front panel, is used to alter the relative level of the
sound output from the amplifier. It is important to realise that the volume control only acts to reduce, or
attenuate, the incoming signal to the power amplifier stage. The maximum power of the amplifier is available
only if the level of signal available from the line level equipment is sufficient to drive it to clipping; this will be
in the region of 350mV's. The volume control is necessary to balance the level from one piece of equipment
to another. It does not increase the power of the amplifier and if it is found necessary to have the volume
control set to a position which is considered to be high, before the desired level of volume is obtained, it
does not necessarily mean that the amplifier is having to work "flat-out". Consult your dealer if you feel you
need more advice.
BALANCE CONTROL
The smaller control knob in the middle of the panel allows you to adjust the relative position of the centre of
the sound stage. Normally it should be set and left in the middle position.
OPERATING THE 4240
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. Avoid obstruction of the ventilation slots on the top cover.
It may be necessary to place the amplifier on the top of other equipment to allow for this. Always have the
volume control set at minimum ( counter-clockwise ) when switching on and off, to avoid thumps or sudden
loud noises. Select the desired input on the rotary selector and switch on the amplifier with the push button
marked Power on the right hand side of the front panel. Adjust the volume gently and settle down to listen.
Your 4240 amplifier is designed to give you years of reliable use. 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 to
the plug-in MM circuitry, 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 amplifier, it should be returned to your
dealer in the original packing material if possible.
SPECIFICATION
POWER OUTPUT ONE CHANNEL 45 Watts into 8 Ω
POWER OUTPUT BOTH CHANNELS 40 Watts into 8 Ω
Not Recommended For Use Into More Than Two Pairs Of 8 Ω loudspeakers
TOTAL HARMONIC DISTORTION >0·01% 20 Hz to 10 kHz
FREQUENCY RESPONSE 3 Hz to 25 kHz -1 dB
POWER AMP RISE TIME +40 -30V's per µS
INPUT SENSITIVITY 380 mV's Line level inputs
INPUT SENSITIVITY ON MM PHONO 2.5mV's
INPUT IMPEDENCE ON MM PHONO 47k Ω
SIGNAL TO NOISE RATIO -105 dB's
SEPARATION -80 dB's at 1 kHz
POWER CONSUMPTION 40 W at idle
'' '' '' 200 W full power 10% THD
WEIGHT 4·5 Kgs, 10 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 )
CREEK Audio Ltd
2 Bellevue Road
Friern Barnet
London N11 3ER
England