Phil Jones C8 speaker surround repair

[theos]

All of the posts I found on this topic we’re old. Thinking maybe some newer adhesives have come around.

I traded for a pair of C8’s knowing one cabinet had one, maybe two blown speakers. During the troubleshooting phase I narrowed it down to one speaker. Watching the speaker, I noticed the surround was loose and flopping around with each bass note… causing the “blown speaker” sound. What glue is best for the rubber surrounds on PJ’s 5” speakers? I figure it’s gotta be stout with the speakers being so small. New speakers are $75 plus shipping. I’d rather try glueing it first, before buying a new speaker.

Have any of you glued the surrounds back down and it actually hold up? Trying to figure out how to apply even pressure around the surround while the glue dries.

 

[agedhorse]

Normally you need to shim the voice coil with such a repair. I think you will be better off just getting the correct replacement driver.

Also, there may be damage to the insulation on the wire that forms the outside of the voice coil. This can result in shorted turns which could be problematic to your amp. This is why once the suspension goes out of alignment and rubs like that, I don't bother trying to repair it. I can't warranty the repair AND if it does end up with a shorted turn(s), I don't want to be responsible for an amplifier repair.

 

[6thplanet]

In the event that it's just a section of the surround, ie: less than half, I'd use an adhesive called Goop (or E6000)

Problem is if part has come loose, the rest is sure to follow.

 

[jak352]

I have an old Phil Jones 4B extension cabinet and I noticed a "blown" sound and saw the foam surround was tearing around one speaker. The tear was less than one half way around. I then did a rather unsubtle job of applying Eclectic Products inc. E6000 Plus in a complete circle over the problem area in the foam insert (see before and after photos). 72 hours later I used it for a three hour gig and it was sounding great again with no sign of foam reacting with the glue or such and the repaired piranha driver was looking to be moving well like the other undamaged ones (and sounds the same when tapped very gently with a finger) so I think all currently good. I might order a replacement driver anyway to be on the safe side long term but definitely works very well in the short term at the very least. I see the original post was about a more recent rubber surround driver but E6000 Plus may well work for that too.

 

[agedhorse]

That damage is the beginning of the foam completely failing from deterioration. Replacement is the best repair long term.

 

[jak352]

That damage is the beginning of the foam completely failing from deterioration. Replacement is the best repair long term.

Thanks for this. It's a bit of a dilemma as to whether to buy a single replacement driver when all four have experienced the same envoronment/age and they no longer manufacture foam surround replacements (but currently have some stock). Any idea if the foam has a shelf life or if it is wear related? P.S. Original post was about rubber surrounds and they are presumably still manufacturing replacements for those.

 

[agedhorse]

The foam deteriorates slower when in a sealed plastic, and faster exposed (especially exposed to UV light in sunlight)

This has been a long standing issue with foam surrounds, though newer foams have improved.

It’s not due to wear.