Sam Spoons wrote:Still pondering, the features on the BKP are almost spot on :-
Stereo balanced input - (X32 control room outputs)
Stereo unbalanced input - (Logitech BT receiver)
The details aren't entirely clear from the manual, and the block diagram indulges in a fair bit of 'artistic licence', but it appears that the BKP is actually unbalanced throughout. It appears to ignore the cold leg of the inputs completely, and the outputs appear to adopt an impedance-balanced approach, although its hard to see how that would work reliably given the inherently variable source impedance of the volume control.
That's not to say that being unbalanced won't work -- it obviously will and does -- but it could lead to oddities...
BKP features not required on custom box :-
Dim
I wouldn't be so quick to dismiss the Dim function. When using a conventional pot (rather than a stepped attenuator), channel tracking is inherently poor at low listening levels. Using a Dim switch extends the useful working range of the control downwards by 20dB which is very useful for late night working, checking mixes at low level, and for answering the phone or having a conversation without having to tweak the volume knob.