Creek 5250 owners manual

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LOUDSPEAKER CONNECTIONS The loudspeakers should be connected using a suitable pair of cables designed specifically for audio use. Two pairs of screw terminals marked Aallow for either bare wire or spade lug connectors to be passed through the hole or around the bush. Tighten the terminal fully after fitting the speaker wire. Please consult your dealer for advice if you are unsure. It is very importantto connect the loudspeakers to the loudspeaker terminals in the correct phase. Cables are normally polarised with a line or a raised bump on the positive side. If one channel is not connected in the same fashion as the other, a severe loss of bass per- formance and a spreading of the stereo image will result. A second set of terminals marked B allow the user to select from the rotary control in the centre of the front panel, the option of having two pairs of speakers running separately, or together. The options include speakers off, when using headphones, speakers A, speakers B and speakers A and B together. It is not recommended to use loudspeakers of less than 4 Wresistance or more than two pairs of 8 Wspeakers running from the amplifier at one time. However, bi-wiring of one pair of speakers, using the four terminal posts, can improve the sound of your system (consult your dealer for more details). 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 AND SWITCHING On the 5250 all six line inputs, including the tape input, have some gain (active circuitry), which can if required, be increased or decreased by changing the setting of the selector switch on the internal plug-in gain PCB. Consult your dealer if you feel you need more advice. It is also possible to make the pre-amp section passive by removing the gain PCB and replacing it with a passive link PCB. A reduced sensitivity will result. The tape input is in a loop with the tape output, enabling you to record anything you can hear, or in other words, Monitor recordings without interrupting the signal. The rotary selector switch on the left-hand side of the amplifier is used to select and listen to any of the desired inputs. The second rotary selector switch on the 5250, marked Record, allows you to record any input independent of the input you are listening to. As all the line input levels are the same, it is not necessary 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. However, for added flexibility, the first input on the 5250 can be used either for vinyl Disc or Auxiliary Line. An optional low noise MM or MC Phono Amplifier Moduleis available, which replaces the standard passive Link pcb, internally. Check with your dealer for more details if required. VOLUME LEVEL The volume control, situated in the right hand side of the front panel, is used to alter the rel- ative level of the sound output from the amplifier. It is important to realise that the volumecontrol 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. The volume control is necessary to adjust 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 vol- ume control set to a position which is considered to be high, before the desired level of vol- ume is obtained, it does not necessarily mean that the amplifier is having to work "flat-out". The selector switch on the gain board may need to be set to a different level setting to increase the level as required (options include +3dB, +6dB and +10dB). Consult your deal- er if you feel you need more advice. OPERATING THE 5250 Make sure that the unit is on a suitable table, shelf 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 ven- tilation slots on the top and bottom of the amplifier. 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 any 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 5250 amplifier is designed to give you years of reliable use. If you need more assis- tance, it is always advisable to go back 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. REMOTE CONTROLLED VERSION (5250R & 5250SE) The 5250R and 5250SE front panel controls function in exactly the same way as the stan- dard 5250. The Creek Amplifier Remote Control handset allows the user to operate the vol- ume control, input selection and mute by an infra-red (RC5) link. The bottom three buttons on the handset are for motorised volume up + down, plus mute functions. The buttons marked 1 Phono to 6 Tape are for selecting the desired source via a motorised version of the rotary input selector. Handset buttons 7, 8, 9 & 0 are not used on the 5250. When the 5250R or the 5250SE are first switched on, the power LED will glow yellow until the protection circuit confirms everything is OK. The LED will then turn green and, if select- ed, the loudspeaker relays will click on. Volume changes will cause the Power LED to flash green. Pressing the mute button will cause the LED to turn yellow. Pressing the but- ton again or increasing the volume will un-mute the amp and the LED will turn green again. Adjusting the volume downwards by remote will not un-mute the amp. Please note, muting can only be cleared by the remote handset or by pressing the amplifier power switch off for 10 seconds and on again. If the amplifier stops working and the Power LED turns red, it indicates a fault. Return the amplifier to the supplying dealer for inspection. N.B. The 5250 is designed to work properly in normal domestic operating conditions. However, the amplifiers performance may be seriously affected if sited near to, or in the room with, a radio transmitter such as a mobile phone or CB radio rig, etc. Re-siting the 5250 or the radio will normalise the situation.