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On request I've renovated a set of filters and amplifiers from 2 Penta's.
As probably already known, the caps losts there value and sometimes, probably most times they are the cause of malfunctions.
So here are some pictures.
Each penta has 2 filters, one for the mids and one for the low/high section.
First pictures from both filter inside the bottom.
Location: Utrecht
Pictures from the filters before and the used components.
Location: Utrecht
Pictures after replacing the caps and resistors.
Now we have two identical filters.
Underneath two boards are some "hidden"caps.
Some small modification is needed on the bottom cover of the penta.
Location: Utrecht
Look at the difference between two capacitors.
Location: Utrecht
The amplifiers are also done. All the caps inside and some ic's are changed by better versions.
Takes lots of labour, but it is very noticable. The way the penta now sound, is a huge difference! Like a curtain is taken away in front of the speaker!
Location: Utrecht
Great pictures taken Beobuddy! Can you give us an estimation about the costs for recapping those 4 filterboards? I think I can do this job myself!
Btw, are these Penta 2 boards?
no doubt silly silly money for those caps! If you do this sort of thing on a regular basis it is worth investing in a good quality ESR meter before blindly spending a lot of money and expecting worthwhile results IMO!
a huge difference! Like a curtain is taken away in front of the speaker!
No doubt the improvement will fade away with time. But then if you're happy, so be it! Are you keeping the original cables?
Great pics!
Btw, are these Penta 2 boards?
These are mk3, first serie. (Almost the) Same as the mk2's.
Location: Utrecht
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