Many microcontrollers have a (slow serial approximation) A/D converter that has 10 bit resolution, so using the full 5V reference would give about 5V / 1024 = 5 mV resolution -> just bias the A/D input with two resistors, connect the audio there through a series cap, and follow the reading. -20 dB from the full audio swing (1 Vp-p) should still show

Nothing new from this side... but the trigger circuit would be a high gain amp (one or two transistors, or an opamp), couple of rectifying diodes and an RC filter. Using a suitable microcontroller with an A/D converter, you could do it all in software.

"Brand new without retail box" - why? Price one third of retail - why?

[quote user="pentalex"] My new livingroom setup, with Beolab4 as backspeakers. [/quote] How is that Beosound 4 installed? It looks like it's floating in air

Don't be disheartened yet (although you've probably guessed what the dealer will say). You'll just need to be extra careful, think before doing, and familiarize yourself with the service manual already before opening the deck. And, we don't know yet for sure if it is this particular plastic part that is broken, although it is very likely

Not quite that easy, as there probably is no place where to hook it up anymore - it's broken off. You'll need to fabricate something. Here's my old case .

Take a tiny screwdriver and unscrew the two outermost pins from the plug (no need to disassemble the plug). Then just connect it to the Beomaster and play Store the pins somewhere safe, for example tape them to the cord!

I have a pair of black (silver line) RL6000's and they have no lettering whatsoever. Can't be sure if the straps are original, but judging from the rest of the lot I got there, the PO's wouldn't have paid a dime to replace them. Silver lettering on a light grey strap doesn't sound too plausible either, so perhaps B&O just dropped

Most likely your cable is wired for the wrong direction (out from the DIN to the RCA). The DIN connector can carry signal both ways, but if you have a 5-pin DIN to 2xRCA adapter, it can only cater for one of them.

They are hideous, but I'm sure there are equally hideous locations where they will fit just brilliantly (pardon the pun)...