|hfe_arcam_alpha_1_7r_8r_8p_service.pdf||ALPHA ONE/7R/8R/8P AMPLIFIER SERVICE MANUAL
Arcam Alpha One/ 7R/ 8R/ 8P Amplifier Service Manual
Issue 1 Serial Number 001 - (Paul Newton/ Haider Bahrani Sept `98)
Circuit Description source for the differential input stage.
The Alpha One / 7R/8R and 8P share a common The output devices are 'n' channel mosfets SMF045.
pcb. The circuits are very similar and the main Zener diodes D103,104 limit the voltage swing within
differences are the remote volume facility and extra safe limits for the output devices & fusible resistors
power output on the 7R and 8R and a switch to R105, 106 provide overcurrent damage to the
bypass the phono stage to enable its use as an extra devices.
line level input and the AV processor switch on the
Alpha 8R integrated amplifier. The 8P power A proportion of the output current appears across the
amplifier utilises th|