Creek Audio 4240 User's Manual
Contents
1. 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 Q POWER OUTPUT BOTH CHANNELS 40 Watts into 8 Q Not Recommended For Use Into More Than Two Pairs Of 8 Q loudspeakers TOTAL HARMONIC DISTORTION gt 0 01 20 Hz to 10 kHz FREQUENCY RESPONSE 3 Hz to 25 kHz 1 dB POWER AMP RISE TIME 40 30V s per uS INPUT SENSITIVITY 380 mV s Line level inputs INPUT SENSITIVITY ON MM PHONO 2 5mV s INPUT IMPEDENCE ON MM PHONO 47k QO SIGNAL TO NOISE RATIO 105 dB s SEPARATION 80 dB s at 1 kHz POWER CONSUMPTION 40 W at idle Me i i 200 W full power 10 THD WEIGHT 4 5 Kgs 10 Ibs 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 England2. Creek AUDIO LIMITED OPERATING INSTRUCTIONS FOR THE CREEK 4240 Line and Phono Input Version Thank you for purchasing the 4240 amplifier You are now in possession of a State of the Art Integrated Amplifier The functions and operation of the 4240 are extremely simple However the following notes are provided to explain all aspects of its design and use MAINS CONNECTION When unpacking the amplifier please keep the packing material in a safe place for possible future use In the pack there is a separate mains cable suitable for connecting to the mains supply in the country of use The IEC socket end of the cable should be firmly inserted into the connector on the rear panel marked Mains Input Remember do not overload the mains wall socket with too many plugs or adapters The high quality performance of the amplifier will be impaired if the electrical supply to it is in poor condition If in doubt consult a qualified electrician or your dealer The Mains Input connection is also fitted with a fuse specifically suited to the supply voltage of the country of use The correct value is clearly marked on the rear panel next to the Mains Input Should it be necessary to replace the fuse ensure that you use the same type as specified on the rear panel i e 5 x 20mm cartridge type 1 6A surge resisting for 220 240V 50Hz AC 3 15A surge resisting for 110 120V 60Hz AC or a 4A surge resisting for 100V Japan LOUDSPEAKER CONNECTIONS The lou
3. dspeakers should be connected using a suitable pair of cables designed specifically for audio use These should be fitted with dedicated 4mm plugs which are preferably soldered onto the cables Please consult your dealer for advice if you are unsure It is very important to connect the loudspeakers to the loudspeaker sockets in the correct phase That is to say that the positive and negative sides of the cable are correctly polarised If one channel is not connected in the same fashion as the other a severe loss of bass performance and a spreading of the stereo image will result The sockets are designated for direct and switched connections The switched sockets provide for the output to the loudspeakers to be interrupted when headphones are plugged into the socket on the front panel The direct sockets however will provide the best sound quality It is recommended not to use loudspeakers of less than 4 resistance or two pairs of 8Q or lower speakers running from the amplifier at one time However bi wiring of one pair of speakers using the four sockets can improve the sound of your system N B It is very important not to short the loudspeaker cables together when the other ends are still connected to the amplifier otherwise permanent damage can result If it is necessary to move or change the location of your loudspeakers make sure that you switch off the amplifier from the mains first INPUT CONNECTION All the line inputs on the amplifier are in
4. 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
5. the region of 350mV s sensitivity The tape input is in conjunction with the tape output in a loop enabling you to record anything you can hear or in other words Monitor recordings without interrupting the signal A button on the front panel marked Tape Monitor should be in the out position for normal use and pressed in for monitoring The rotary selector switch on the left hand side of the amplifier is used to select any of the desired inputs As all the line input levels are all the same it is unnecessary to use the precise inputs as designated You may for example plug a CD player into the tuner input and obtain exactly the same result or performance as the dedicated CD input The first input is selected on this model for use as an MM phono Disc amplifier If you no longer wish to use an analogue disc player it is possible to replace the internal plug in phono pcb with a linking connector or another plug in module which will convert it to a line input or could be used to increase the sensitivity of the input for line level use Also available is a low noise MC phono amplifier plug in pcb 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
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