Nut for binding post on AR 3A

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#65
Sounds is good,and I also realized the drivers really needed to be tightened.
I had a look at the crossovers, they still have original components, they seem to be in good shape and the sound is nice. Do you think a replacement of capacitors is needed?
 
#67
Depending on the surround material, I think it's treated/sealed cloth, it could use a fresh layer of sealant.
Also the drivers mounting seals may be rotten, some re-doing won't hurt, but insuring that the "Air Suspension' properties are tight, it vastly improves the bass.
Pushing slowly on the woofer cone, and then quickly releasing it, the cone should slowly return to it's resting position if all seals are good.

I have a pair of old 1970's Advents, and also an original pair of KLH #5's, both needed resealing.
 
#68
NareshBrd said:
The life of good quality capacitors can be taken as about 30 years, depends on original quality, operating temperatures, and circuit rating.
If they are of a reputed make, and not bulged or leaking, let them be.
Click to expand...
EA3AA073-82FA-42A0-9A5A-DDD2DEDA15AA.jpeg

I can only see one electro, it’s a 150uF, and it looks good
 
#69
wiseoldtech said:
Depending on the surround material, I think it's treated/sealed cloth, it could use a fresh layer of sealant.
Also the drivers mounting seals may be rotten, some re-doing won't hurt, but insuring that the "Air Suspension' properties are tight, it vastly improves the bass.
Pushing slowly on the woofer cone, and then quickly releasing it, the cone should slowly return to it's resting position if all seals are good.

I have a pair of old 1970's Advents, and also an original pair of KLH #5's, both needed resealing.
Click to expand...
Thank you. This would need an expert tech..
(the surround is foam)
 
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