User manual ARCAM FMJ A38

[. . . ] A38/P38 Handbook Integrated and power amplifiers english CAUTION ATTENTION RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR class i product This equipment is a Class I electrical appliance. It requires safety connection to electrical earth (`ground' in the U. S. ). safety guidelines RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: To reduce the risk of electric shock, do not remove cover (or back). Refer servicing to qualified service personnel. WARNING: To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture. [. . . ] For example, to copy from a cassette recorder connected to the PVr socket, to a cassette recorder connected to the AV socket, first use the rEcord button to select `Record PVR'. This routes the PVR signal to the AV output. controlling a38 from a second room The A38 will require a remote pick-up device with a 12V external power supply (such as a Xantech Dinky Link) located in Zone 2, together with a power amplifier (such as an Arcam A38 or P38) to complete the system. The diagram below shows the wiring scheme, which will also apply to other IR pick-up devices commonly available. rEMotE In Tip = Signal Sleeve = 0V Dinky Link, located in Zone 2 Signal The A38 can also provide a +12V trigger output to control devices such as the power amplifier in Zone 2. The +12V trigger is active when the unit is `On'. e-7 english To use your A38 as a dedicated pre-amplifier, or as part of a bi-amp'ed system, connect the PrE out sockets to the input sockets of your power amplifier. connecting loudspeakers to the A38/P38 loudspeakers Single wiring Single wiring is the conventional wiring method of running a single cable per channel between the amplifier and the speaker; this is the easiest technique. notes on making speaker connections < Do not make any connections to any amplifier while it is switched on. We recommend that your amplifier is completely disconnected from the mains supply before starting. Before switching your amplifier(s) on for the first time after connecting to speakers, please check all connections thoroughly. Ensure that bare wires or cables are not touching each other or the amplifier's chassis (which could cause short circuits), and that you have connected positive (+) to positive and negative (­) to negative. Be sure to check the wiring for both the amplifier and the speaker. After making connections: switch the amplifier(s) on, select a source signal, then gradually increase the volume to the required listening level. If you are unsure as to how your system should be connected, or need advice on bi-wiring or bi-amping, please contact your Arcam dealer who will be happy to help you. 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 higherfrequency signals. Bi-wiring can improve the sound of your system because the separation of high- and low-frequency signal currents into different speaker cables avoids distortions caused by the different currents interacting with oneanother within a single cable, as occurs in single-wired systems. The A38 and P38 are designed to allow easy bi-wiring, but you will need to connect to loudspeakers that provide separate terminals for the two cables. Each speaker must have two pairs of terminals; one pair labelled hf or `High Frequency', the other pair labelled Lf or `Low Frequency' . < < < bi-amping Bi-amping is the separation of the amplification of lowand high-frequency signals over two amplifiers. Bi-amping requires the use of two amplifiers per channel. Normally, your A38 is used to drive the highfrequency (treble) speakers, with the P38 used for the lower (bass) frequencies. e-8 Single wiring english Both the A38 and P38 are designed for bi-wiring, which is why there are duplicate speaker terminals on the back. For single wiring, we recommend that you use the lower set of speaker terminals on your amplifier. If each speaker has more than one pair of connecting terminals, use the terminals labelled Lf or `Low Frequency' for each speaker. Connect the positive terminal of the right speaker connection on the amplifier (coloured red and labelled +r) to the positive terminal of your right speaker. Similarly, connect the negative terminal of the amplifier (coloured black and labelled with r­) to the negative terminal of your speaker. Repeat the process for the left speaker, using the amplifier terminals labelled +L and L­. If your speakers support bi-wiring, then there is a strip of conductive metal on the speakers connecting the low-frequency terminals to those for the higher-frequencies; this mUST NOT bE REmOVED in a single-wired system. An A38 or P38 connected to speakers using single wiring bi-wiring Bi-wiring is performed in the same way as single wiring except that, for each speaker, a pair of cables are used to connect the amplifier to each speaker. Follow the instructions given for single wiring; then perform the same actions, this time connecting the upper set of speaker terminals on your amplifier to the terminals labelled hf or `High Frequency' for each speaker. [. . . ] The connecting cable to use is a 3. 5mm jack lead. It is possible to remotely switch several power amplifiers from an A38 by `daisy chaining' from the trIG out of one power amplifier into the rEMotE In of the next. e-15 english a38 Continuous power output (20Hz--20kHz at 0. 5% THD), per channel 100W Both channels, 8, 20Hz--20kHz 150W Single channel, 8, 20Hz--20kHz 140W Both channels, 4, 20Hz--20kHz 200W Single channel, 4, at 1kHz 0. 005% Harmonic distortion, 80% power, 8 at 1kHz Inputs Phono input (optional module): Input sensitivity Input impedance Signal/noise ratio (CCIR) Overload margin Line inputs: Nominal sensitivity Input impedance THD+n (1kHz, 0dB signal, measured 20Hz to 20kHz unweighted) Power amplifier input Nominal sensitivity Input impedance Gain Preamplifier output Nominal output level Maximum output level Output impedance Headphone output Maximum output level into 600 Output impedance General Mains voltage Power consumption (maximum) Power consumption (standby) Dimensions W x D x H (including feet) Weight (net) Weight (packed) Supplied accessories P38 100W 150W 140W 200W 0. 005% continual improvement policy Arcam has a policy of continual improvement for its products. This means that designs and specifications are subject to change without notice. specifications 2. 7mV (MM); 270µV (MC) 47k (MM); 300 (MC) ­79dB (MM); ­73dB (MC) 35dB 250mV--2V 10k ­104dB 800mV (pre-amp. in) 10k ­104dB 800mV 22k 31. 5dB 700mV 2. 6V RMS <50 1. 6V rms 4. 7 115V or 230V 800VA 2VA 430 x 370 x 110mm 9. 3kg 12. 2kg mains lead CR90 remote control 4 x AAA batteries 800mV 22k 31. 5dB 115V or 230V 800VA 2VA 430 x 350 x 110mm 9. 5kg 12. 5kg mains lead E&OE NOTE: All specification values are typical unless otherwise stated. e-16 troubleshooting If you are having trouble with your amplifier, check the following items. remote-control codes Power commands Command Power toggle Power-on Power-off Decimal Code 16­12 16­123 16­124 menu navigation commands Command Decimal Code uP down sELEct EntEr no sound Check the following: < Both the A38 and (if applicable) P38 poweramplifiers are switched on. [. . . ]