BeoLab 8000 modification: do you know this?

[KolfMAKER]

I recently saw a BeoLab 8000 with a capacitor added to PCB02. It looked like in the pictures below. I believe the capacitor is connected to two pins of the main IC.

Question

Does anyone know what kind of modification this is, or what it solves?

Overview

Close-up

[Die_Bogener]

Is the crossover network still existing and fully mounted?

Otherwise ist could be a bypass for the crossover…

But it looks like a standard work of B&O… ???

Check, wether this cap manufacturer is also used on the board.

[KolfMAKER]

Thnx for responding Die_Bogener!

Answering your questions …

• Yes, the crossover network is existing and fully mounted.
• I am not sure if this is the standard work of B&O. I showed a picture to a former B&O repair engineer. He did not recognize this.
• The cap manufacturer I believe is different than what’s used on the PCB’s.

[Die_Bogener]

Probably the crossover ist defect or the one who did this wanted to change the sound.

Either more bass or treble… but without filter this is senseless and will destroy the speakers.

If it is treble: very nice to send low frequencies to a tweeter, this will extend lifetime… to some minutes.

And if it is bass: ok, this will kill the amp…

[KolfMAKER]

Thanks again for your comments!

I have removed the capacitor, to check if this made a difference.
Result = no difference. Sound is the same, functioning of the speaker system is the same.

I will just leave it as is, without the capacitor. Probably better to avoid damage.

[Author]

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