Beolab Penta 6603 MK1 restoration project

65 replies

The order of all the crossover components came in today. Its going to be fun to fit all these huge MKP caps into the space where the electrolytics were. Some of theses like the 68uF ones are HUGE!

 

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PCB 15 as was original....

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PCB 15 with the new resistors and MKP capacitors. Can you say OVERSTUFFED?

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Have you tried to put the cross-over board back in place with these enormous caps? Great thread btw.

The ceramic resistors need air around them.
Don't put anything too close to them, they can get very hot and heat is one thing foil caps don't like!

Martin

Yes actually I tried to reinstall that one board last night and noted that the large 68uF cap isn't going to work right there... I'm going to have to run longer leads and locate it off board. Same with the 2x 68uF caps on the woofer/tweeter PCB 14. Everything else layout wise is just fine though.

 

I'm still waiting on 2 red wima caps from Mouser to be able to test the amplifier, but I should be able to test the new crossovers/speakers with another amplifier this weekend.

 

I really appreciate the support guys!

Can I ask how much you paid for the cross-over caps, they look quite expensive. Also wondering if you could connect MK2 or 3 displays on the MK1 Penta.

Leslie wrote:
Also wondering if you could connect MK2 or 3 displays on the MK1 Penta.
As far as I know the interface for the displays are the same on all Beolab Penta speakers.

Sure, here is a screenshot of the shopping cart of the order I put in through Parts Express.

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The Audyn MKP caps are a bit expensive, and they are HUGE because they are all 400v. Lower voltage would have been a bit smaller but why not...

I actually noted although my Penta's are MK1 they have MK2 crossover PCB's by the part numbers. I noticed that when I was ordering parts and the repair manual listed all sorts of different values.

 

Thanks Jordan, approx. 140 euro for a cross-over recap Penta pair with good quality caps. Maybe that will makes difference instead of using low quality caps. Will give it a try with my Penta 3's.

Hey no problem! The P/N's are all there for you, but I would double check to make sure the MK2/3 crossover components are all the same. I only have MK1/2 service manual PDF's.

 

It is sort of unfortunate that Audyn doesn't make a 27uF capacitor so I had to break the nice matching kit with a Jantzen. Both are very very good quality though.

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