Arcam (Cambridge) FMJP7 free download

File name Arcam-FMJP7 pwramp.pdf

Service Manual P7 Issue 1.0 FMJ P7 7-Channel Amplifier ARCAM Contents List Section Issue Technical specifications ! ! Technical specification Rear panel silk screen - Amplifier board L924 ! ! ! ! Circuit description Component overlay Parts list Circuit diagrams 1.0 1.1 1.1 Controller board L925 ! ! ! ! Circuit description Component overlay Parts list Circuit diagrams 1.0 1.2 1.2 Transformer specifications ! ! ! ! L911TX L912TX L920TX L921TX 1.0 1.0 1.0 1.0 Mechanical ! ! General assembly parts list Assembly diagrams Front panel TX tray Rear panel Chassis - - Technical Specifications Contents ! Technical specifications ! Rear panel silk screen Technical Specifications All measurements are with 230V/50Hz mains power Continuous output power All channels driven, 20Hz ­ 20Khz, 8 ohm All channels driven, 20Hz ­ 20kHz, 4 ohm One or two channels driven at 1kHz, 8 ohm One or two channels driven at 1kHz, 4 ohm One or two channels driven at 1kHz, 3.2 ohm 150W per channel 230W per channel 160W per channel 250W per channel 300W per channel 1.05kW total 1.62kW total Peak output current capability 25A per channel Total harmonic distortion At any level up to rated power, into 4 or 8 ohms <0.05% (20Hz ­ 20kHz) Typically <0.005% at 1kHz Frequency response +-0.2dB (20Hz ­ 20 kHz) -1dB at 1Hz and 100kHz Residual hum and noise Referenced to full power -122dB, 20Hz ­ 20kHz, unweighted Voltage gain x 28.3 (1V input gives 100W/8 ohm output) Input impedance 22k ohm in parallel with 470pF Output impedance 50m Ohm at 20Hz, 1kHz 120m ohm at 20kHz Power requirements 115V or 230VAC, 50/60Hz, 3kW maximum via heavy duty IEC mains inlet A soft start system eliminates large inrush currents at switch on Dimensions W430 x D450 x H180 mm Weight 31kg (68 Ib) nett 35kg (77 Ib) packed 7 RS BACK 6 R SURR 5 RIGHT 4 CENTRE 3 LEFT 2 L SURR 1 LS BACK 230V POWER INLET 50 ­ 60 Hz 3700 VA MAX ~ 12V TRIGGER IN CAUTION ­ SHOCK HAZARD, DO NOT OPEN. ACHTUNG ­ VOR OEFFNEN DES GERAETES NETZSTECKER ZIEHEN. ATTENTION ­ RISQUE DE CHOC, NE PAS ENLEVER. PRECAUCION ­ PELIGRO DESCARGA, NO ABRIR. RADIO INTERFERENCE (USA) THIS PRODUCT COMPLIES WITH PART 15 OF FCC RULES, OPERATION IS SUBJECT TO THE FOLLOWING CONDITIONS; (1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION. SERIAL No. LABEL DESIGNED & MADE IN THE UK BY: A & R CAMBRIDGE LTD, WATERBEACH, CAMBRIDGE, CB5 9PB. WARNING: THIS APPLIANCE MUST BE EARTHED. THIS PRODUCT IS CERTIFIED BY THE MANUFACTURER TO COMPLY WITH DHHS RULE 21 CFR SUBPART J APPLICABLE AT THE DATE OF MANUFACTURE. Amplifier Board L924 Contents ! Circuit description ! Component overlay ! Parts list ! Circuit diagrams P7 Amplifier Module Circuit Description Refer to L924 circuit diagrams Introduction L924 is the power amplifier module for the P7 multichannel amplifier. There are 7 identical modules in the P7. The