Or if chartz has the front off again he could take a shot of both front and back of the board which we could translate to a diagram :) Would be a good contribution to Beoworld technical too...

Hi,

I will do this when I do the re-cap job just to see whether there are noticeable changes from s120's to MC120.2's. But then I will only have the value of the resistors and capacitors... As I am an electrician with electronic skills I can draw the diagram easily. I will publish photos anyway.

I have nothing to measure the inductors reliably though.

Jacques

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I see that more of you are looking for the diagram of a MC 120.2 well here it is

Per H

Wow, thanks Per.

The tweeter filtering is much simplified, now a 6dB/octave one. A bit disappointing actually!

Jacques

chartz wrote:

Wow, thanks Per.

The tweeter filtering is much simplified, now a 6dB/octave one. A bit disappointing actually!

Jacques

What makes you say this Jacques? I think it's pretty cool that B&O was able to achieve their target acoustic slope with a first order filter and a gentle contour circuit. This is when they switched to the Vifa D25 units, from the SEAS tweeters.

Hey Per, did you just happen to have that diagram, or is there a place you went to to get the ".2" version of the Beovox crossovers? I don't think I've ever been able to find them!

Jon

Hey Jon

I have a supplement for the "Beovox 3 diagram".
The supplement includes S 45 - S 80.2 - MC 120.2 - M150.2 - MS 150.2
The number of the supplement is 3538557 and dated 2-83

Per H

Hi,

A few caps from Martin later...

The sound from these speakers is now slightly better—it's not night and day—especially in the highs department. Mids don't shout as much now, and bass performance is the same. A bit more presence altogether. Imaging remains okay.

Happy then? Almost. Still a bit veiled I think, or is it neutral to the point of excess?

Anyway, I still have those woofers to refoam!

Jacques

Nice work on the caps !

Do you use stands when you listen to the speakers ?

Martin

Dillen wrote:

Do you use stands when you listen to the speakers ?

Yes of course I do, as shown on the photos on page 1 here.

Jacques

Must confess to being a little concerned about your woofers! My S120s had a fair amount of movement - as you know I actually replaced the units , not knowing that one could get them repaired. It is the same unit as used in the MS150 and M150 and when I have used these speakers, the bass unit moves pretty well - I use flat controls as well.