refoaming my Beovox Penta's - is it worth it?

6 replies
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ScottMc (archived2)
Bronze
Posted August 3, 2017 at 19:13 GMT
#2088542

Hi all,

I have a pair of Beovox Penta's which i picked up very very cheaply locally along with a Beomaster 5500 and CD5500.

There is foam rot on the surrounds of the mid range drivers. See attached photos.

Obviously i'd like to get the best out of the speakers but as the the foam doesn't appear to be that bad yet is it worth me trying to refoam? I am concerned about making it sound worse if i make a mess of the procedure. 

Would it make a big enough difference to justify the cost and risk of doing it?

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Chrisreunion (archived2)
Bronze
Posted August 3, 2017 at 20:50 GMT
#2088543

Hi, the first thing I did on my Pentas was re-foaming, it is a very easy procedure when you are patient and meticulous, I fitted them with rubber surrounds and the sound is obviously cleaner. There are several websites selling kits with rubber surrounds and glue, the only things you need (except for a glass that you can use to press evenly the surrounds after applying the glue).

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deejay (archived2)
Bronze
Posted August 4, 2017 at 02:00 GMT
#2088544

Absolutely and definitely refoam. As they are they will just get worse.

 

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adc15
Bronze
Posted August 4, 2017 at 14:36 GMT
#2088545

Many years ago I did buy new mid speakers direct from Bang & Olufsen in Struer. But I dont think they still have the speakers for replacement.  But take a look her:

https://www.youtube.com/watch?v=lnc8JZF5ryI

The midrange is not the only problem. The crossover filters often also need replacement.

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ScottMc (archived2)
Bronze
Posted August 5, 2017 at 10:14 GMT
#2088546

thanks everyone for the replies.

 

is there any guide on how to replace the crossover filters (and how would i know it this is also required?)

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adc15
Bronze
Posted August 6, 2017 at 23:39 GMT
#2088547

is there any guide on how to replace the crossover filters.........

Try this one:

http://egoh.com/2012/06/01/vintage-bang-olufsen-penta-restoration-project-twins-part-1/

http://egoh.com/2012/06/03/vintage-bang-olufsen-penta-restoration-project-twins-part-3/

I think there also is a guide here on Beoworld.com - maybe in the old forum?

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