User manual ARCAM DIVA P1000

[. . . ] CAUTION: To reduce the risk of electric shock, do not remove cover (or back). WARNING: To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture. The lightning flash with an arrowhead symbol within an equilateral triangle, is intended to alert the user to the presence of uninsulated `dangerous voltage' within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. This product is designed and manufactured to meet strict quality and safety standards. [. . . ] Two different connection types are provided for receiving signals from your pre-amplifier. To the P1000 are less than 3m long, we recommend connecting your pre-amp. While it is acceptable to mix balanced and phono connections between your pre-amp. And P1000 (should you wish), do not connect both balanced and phono inputs to any single channel. There is no technical improvement in following this strategy, but it makes life easier. If you wish to use two modules to bi-amplify a pair of speakers, or would like to bi-amplify using another power amp. , then you can take the signal for that channel (using the AUDIO OUT phono socket for that channel) and feed it on to the additional module(s). The signal is then fed in to the first module, but also fed on to the second module so that both modules can bi-amplify the loudspeaker. Note that bi-amping in this way requires the use of phono connections between your pre-amp. Provides a 12V Trigger output, it can be connected to the 12V TRIGGER IN socket using a 3. Note that the trigger input is active only when the power button on the rear panel is in the `on' position. There are three different wiring strategies that can be employed to connect your P1000 to your speakers. Single wiring Single wiring is the conventional wiring system of running a single cable per channel between the amplifier and the speaker. Bi-wiring Bi-wiring is running two separate cables between the amplifier and each speaker, with one cable carrying the low-frequency information, the other the higher-frequency signals. Any amplifier can support bi-wiring, but speakers support it only if separate connection terminals are provided for the two cables (the speaker will have two pairs of terminals on the back, one pair labelled HF or High Frequency, the other pair labelled LF or Low Frequency). Bi-wiring improves the sound of your system because the separation of high and low frequency signal currents into separate speaker cables avoids distortions caused by the different currents interacting with one-another within a single cable, as occurs in conventionally wired systems. Note that some speakers have three pairs of terminals on the back, extending the biwiring principle to tri-wiring. Ensure that your P1000 is switched off and disconnected from the mains supply before attempting to connect speakers. Bi-amping The performance of your system can be enhanced further by extending the signal-separation principle to include separate amplification for the low- and high-frequency drivers in each speaker. The speaker terminals for any given channel are labelled clearly on the rear of the P1000. The treble (higher) terminals of your speaker should be connected to the speaker terminals of the amplifier module (channel) being used for the high frequencies, while the bass (lower) terminals of your speaker should be connected to the speaker terminals of the amplifier or module (channel) being used for the lower frequencies. The strip of metal on the speakers connecting the lower terminals to the upper terminals must be removed. [. . . ] A DC offset fault can occur if an excessive DC voltage is present at the output of the pre-amp. Simply to clear the fault, turn the P1000 off for at least 30 seconds (using the switch on the rear of the unit), then turn it on again. If the fault fails to clear using this method, or to verify excessive DC offset voltage, turn the P1000 off using the switch on the rear of the unit, remove the interconnect leads (with the P1000 switched off), then turn the P1000 on again. The fault should have cleared; if the power light is still amber then your P1000 has developed a fault. [. . . ]