valutazioni - 4, GPA: 4.5
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You will need: Speakers – with four input terminals each: these will be marked HF (High Frequency + and –) and LF (Low Frequency + and –). Loudspeaker cables – two pairs of cables per loudspeaker (which may be joined at the amplifier end if your amplifier has only one pair of output terminals per channel, as is the case with P7), or a suitably terminated cable set. How to bi-wire loudspeakers 1. Remove the terminal links on the rear of your loudspeakers. NOTE: If you do not remove the shorting links from the speaker terminals, the speakers will still be single-wired! 2. Connect the cables as shown in the diagram below, ensuring correct polarity at all times. BI-AMPING YOUR SYSTEM The performance of your system can be further enhanced over that achieved with bi-wiring, by extending the principle one stage further to include separate amplification for the low and high frequency drive units in each loudspeaker enclosure. To bi-amplify your speakers, connect the speaker terminals from one module to one pair of terminals on the speaker. Connect another module, or one channel of a separate power amp, to the other pair of terminals on the speaker, so that two amplifier channels are connected to that speaker; one for low frequencies and one for high frequencies. Ensure that in all cases, the positive terminals on the speakers are connected to the positive (red) terminals on the amplifier, and similarly for the negative (black) terminals. NOTE: In order to bi-amplify your speakers, your speakers will need to be bi-wirable, and have positive and negative terminals for both high frequency (HF) and low frequency (LF) information. If your speakers are bi-wirable, ensure that the links between the HF and LF terminals are removed. How to set up a bi-amped system 1. Remove the terminal links on the rear of your loudspeakers. WARNING: This step is essential or damage to your amplifier may result which is not covered under warranty. 2. Connect the cables as shown in the diagram below, ensuring correct polarity at all times. 3. Use interconnect cables to connect the OUT socket of the first channel to the corresponding IN socket of the adjacent channel of the power amplifier. Arcam P7 power amplifierHFLF+ +– – + – INOUT Arcam P7 power amplifierHFLF+ +– – + – INOUT+ – INOUT Recommended bi-amping configuration Bi-wiring using one set of connections on amplifier Troubleshooting NO LIGHTS ON THE UNIT Check that: . the power cord is plugged into the P7 and the mains socket outlet it is plugged into is switched on. . the plug fuse has not failed, or a circuit-breaker earlier in the power supply path has not opened. . the power button is pressed in. RED LED PRESENT Refer to the ‘Fault Status Indicators’ table if you have an unusual sequence of LEDs. NO SOUND IS PRODUCED Check that: . the correct input has been selected on the pre-amp. . you have assigned the digital input to the correct input source. . the volume is turned up to a reasonable level and ‘MUTE’ is not displayed on the front panel display on the pre-amp. . your power amplifier(s) are turned on and working correctly. SOUND IS POOR AND BADLY DISTORTED Check that: . all cables are making a good connection. If necessary withdraw the cable from the connector and plug it back in again. (Turn the power off before doing this.) . you have selected the correct size of speakers to suit your system in the setup menu of the processor or pre-amp. SOUND ONLY COMES FROM SOME OF THE SPEAKERS Check that: . all speakers in the system are connected to the P7. . you have configured your pre-amp to include all the speakers in your system. . you have an appropriate surround sound source selected and playing through the pre-amp. . for digital sources, check the player is outputting multichannel data. With some DVD players you are able to select in what format multi-format encoded discs are outputted, and whether multichannel data is down mixed to PCM (stereo). . the disc you are playing is a multichannel recording and that the processor is outputting multichannel audio. . your speaker balance is correct. . all amplifiers are turned on and all channels are working correctly. . all units are turned on. If the audio is ‘daisy-chained’ from the P7, make sure that the unit being fed is turned on. HUM ON AN AMPLIFIER OUTPUT Check that: . all cables are making a good connection. If necessary withdraw the cable from the connector and plug it back in again. (Turn the power off before doing this.) . if the hum originates from a ground loop caused by an aerial, satellite dish or cable supply, you should contact your aerial contractor. . the signal (interconnect) leads are not wrapped around a mains lead. . try switching the ground lift on the back panel of the processor (if available). THERE IS RADIO/TELEVISION RECEPTION INTERFERENCE The P7 has been designed to a very high standards of electromagnetic compatibility. Check that: . the aerial/dish cable is routed as far as possible from your P7 and its cabl...
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