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BEOVOX MC 120.2 Resistor Question

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Spassmaker
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North Germany
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Spassmaker Posted: Mon, Feb 10 2020 8:30 PM

Hi There

I´m on my way fto rebuild spme Beovox MC 120.2.

The Problem is that the Tweeters and the Midrangespeakers were burned.

The Bassdriver just needs some new Foamsurrounds.

Two Tweeters I bought in Denmark arrived Yesterday, the  two Midrange Speakers I have to buy  new.

My next Problem is that there are some burned Resistors on the Frequencynetwork, wich have shurely not the right Values, i.E. too high about 180 KiloOhms. It is the Green one.

I hope that someone can tell me the Values of the Resistors on the Frequencynetwork.

It is the Network with 6 Capacitators and 5 Resistors, lookin quite similar to the S 120.2 but not the same.

Capacitators are

4,7 uF one

15 uF two

33 uF two

3,3 uF one

Resistors as far I could read:

2,2 Ohm

6,8 Ohm

4,7 Ohm

10 Ohm

??? Ohm ( Green Resistor)

Thank you very much for your Help.

Best Regards

Christian

 

Dillen
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Copenhagen / Denmark
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Dillen replied on Mon, Feb 10 2020 9:19 PM

If it's R5 (the one across the tweeter) it's 22 Ohms.

Martin 

Spassmaker
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North Germany
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Hi Martin

Thank you for your Answer.

I've added a Picture from the Network...

The Resistor is the one with the Arrow.

 

Maybe you can verify the value of the other Resistors too.

 

Best Regards

Christian

Dillen
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Copenhagen / Denmark
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Dillen replied on Tue, Feb 11 2020 8:04 AM

Looks right.
If this happened using your own amplifier, - unless you had a really loud party with a huge amount of treble, you better check the amplifier for self-oscillation.

Martin

Spassmaker
Top 500 Contributor
North Germany
Posts 223
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Thank you Martin

Just for Information about the Midrange Speaker.

I've found this one which fits precisely into the Beovox MS 120.2.

It is the Scan Speak 7608/920000 Discovery.

Best Regards

Christian

 


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