Hi,

does anyone have the wiring diagram for Beolab 4000 type speaker or any of the Mk1 powerlink cable speakers?

Thanks in advance,

Kevin 

Unfortunately this manual is of the era where you change the pcb and the wiring diagram is little more the the block diagram.

What I'm most interested in is what B&O do with the input signal. The speaker can take powerlink and  line. From the manual I am assuming they pre amp the powerlink signal to line level. This is the part of the circuit I'm most interested in. They seem to use the LF353 as pre amp on the older gear.

Any help on the diagram would be much appreciated as would any comments on simple chip based pre amps.

Thanks,

Kevin 

Kevin,

I think the following is what you are looking for:-