Arcam P7 Schematic

Service Manual

FMJ P7
7-Channel Amplifi er

P7

Issue 1.0

ARCAMARCAM

Contents List

Section Issue

Technical specifications

! Technical specification -
! Rear panel silk screen -

Amplifier board L924

! Circuit description -
! Component overlay 1.0
! Parts list 1.1
! Circuit diagrams 1.1

Controller board L925

! Circuit description -
! Component overlay 1.0
! Parts list 1.2
! Circuit diagrams 1.2

Transformer specifications

! L911TX 1.0
! L912TX 1.0
! L920TX 1.0
! L921TX 1.0

Mechanical

! General assembly parts list -
! Assembly diagrams

Front panel ­TX tray - -
Rear panel ­Chassis -

Technical
Specifications

Technical Specifications

All measurements are with 230V/50Hz mains power

Continuous output power

All channels driven, 20Hz – 20Khz, 8 ohm 150W per channel 1.05kW total
All channels driven, 20Hz – 20kHz, 4 ohm 230W per channel 1.62kW total
One or two channels driven at 1kHz, 8 ohm 160W per channel
One or two channels driven at 1kHz, 4 ohm 250W per channel
One or two channels driven at 1kHz, 3.2 ohm 300W per channel

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