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Looking fine, original and untouched so far.
Let's eliminate an eventual problem by shortening out the safety relay;
Short the two purple wires that goes to the relay mounted on the front
and try playing the speakers again.

Martin

Hi Martin,

This may sound like a stupid question (I am known for these…) but are the two gray tabs next to the red LED supposed to be popped out, or recessed?

I “assumed” that the grey posts were reset buttons for the over-load circuit, so I pressed them both in and they did not pop out. I figured it couldn’t hurt to try this.

Now it seems that the speakers are playing well. Am I kidding myself, or was this the problem in the first place?

Jeff

Well Jeff, that wasn't stupid at all. Yes, they are reset buttons.
Actually, I think it makes a few others feel a bit stupid for not thinking about that - myself included... 

How do you like them then ?

Martin

Oh dear - I too can hang my head in shame as I was scratching my head trying to think of your problem before adding my 2 penn'orth to this thread.

I have some of these and they are just about my favourite B&O passive speakers. Martin supplied me with a capacitor kit for the crossovers which brightened them up beautifully.

Chris.

Hi Martin,

Well the difference is absolutely amazing. Before I had a pair of speakers that sounded odd at best and the sound deteriorated with a volume increase. At “80” on the Beomaster 4500 the sound was so garbled that it was intolerable to listen to….. almost like damage was being done to the speakers.

With the reset buttons depressed the speakers transformed into a delightful entertainment source.

As to my personal (highly subjective) assessment, I would really need to spend a bit more time with them to give a fair “rating.” However, like the Linn Isobariks, I find the MC120.2’s a bit too “bright” in the upper range for my taste. Yet at the same time (a contradiction) I admire the upper end clarity that is so lacking in the McIntosh ML-2’s.

So in short, I like them, especially when comparing the bass response to the S75’s.

Jeff