Original circuit diagram from 1969 :
JLH 1969 article - Original article from Wireless World, April 1969 (183 KB)
PRINTED CIRCUIT BOARDS :
All parts of one channel-monoblock are located on single PCB.
The PCB is made of FR-4 fiberglass material with Cu-50 mikron + Pb track overlay (tinplated), laser drilled, with two sided blue soldermask (instead of green), and with white component overlay.
PCB comes with partlist, stuffing guide, wiring and circuit diagram.
Size of single PCB (for one channel) is 88 mm x 80 mm ….. ( 3,50 in x 3,15 in )
Professional made printed circuit boards are available for this amplifier at cost :
1 Pcb ..... Euro 17.00
2 Pcb ..... Euro 29.00
( Worldwide shipping is included in all prices )