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Post by simpleman68 on Nov 3, 2016 18:14:59 GMT -5
Zombie thread revival. Got my answers a year ago; thanks guys!  Scott Posting this for a friend of mine on another board. Thanks for any guidance. Scott His question: I have a pair of Infinity CS3008s which have rotten foam on the woofers. I tried refoaming them myself but I failed. Can any audiophile here guide me to a pair of 10s which will accept the output of the Adcom GFA-555, sound decent and not cost as much as a replacement set of speakers? |
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USAFRetired
Sensei
New Receiver onboard Denon RIP
Posts: 651
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Post by USAFRetired on Nov 3, 2016 18:30:17 GMT -5
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Post by Loop 7 on Nov 3, 2016 20:48:58 GMT -5
I had the woofers on a pair of late 1980's Mission speakers re-foamed by a professional service that did an absolutely amazing job. Just perfect and well worth the money. In fact, I sent off a friend's speakers as well after being so impressed. Neal's Speaker Service |
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Post by knucklehead on Nov 3, 2016 21:28:15 GMT -5
Refoaming would be my choice. Those drivers were selected specifically for that particular enclosure. If you can get the correct replacement drivers for less than a pro refoam job I'd do that. Something I seriously doubt. Stuffing just any old driver into those speaker enclosures without matching them up would not be a good choice IMO.
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Post by simpleman68 on Nov 3, 2016 21:45:12 GMT -5
Thanks for the input gents!
I thought a replacement would be worth considering provided the specs on the new drivers were a match.
Scott
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cawgijoe
Emo VIPs 
"When you come to a fork in the road, take it." - Yogi Berra
Posts: 5,033
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Post by cawgijoe on Nov 3, 2016 22:51:21 GMT -5
I've reformed a set of Infinity RS5b speakers myself and it was not difficult to do. Bought the kit from Parts Express. I have also replaced the woofers and tweeters in another set of Infinity speakers with replacements from PE. They used to have a calculator on their website to guide you towards drivers that would work. They will not sound the same if you go that way. Mine actually sound better.
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Post by RichGuy on Nov 3, 2016 23:38:14 GMT -5
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Post by Boomzilla on Nov 4, 2016 12:55:03 GMT -5
I've replaced surrounds on a wide variety of woofers - How did he "fail?" Coils rubbing? Didn't get the surround centered?
Might be easiest to just try it again (following the instructions CAREFULLY) - it isn't that hard - really.
OTOH, some just are just not interested, and for those, the plethora of service companies listed above all do fine work, I'm sure.
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Post by 405x5 on Nov 7, 2016 8:04:33 GMT -5
Bill Legall (MILLERSOUND)
Is the ultimate infinity repair guy....give those babies to him better than new
Bill
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Post by frenchyfranky on Nov 7, 2016 10:59:11 GMT -5
The real difficulty is to obtain the exact same foam suspension, I mean the same foam thickness, the same dome radius and the exact same material density to obtaining the exact same suspension compliance as the original one because the original mechanical specs of the woofers have to be respected. A very small suspension difference will results in a spec changes of the woofers in a lot of parameters like the moving mass, the Xmax, the mechanical Q and total Q, and this could drastically change the listening results of the drivers. I experienced this before with a pair of 8in woofers for a Snell type E III, the foam replacement wasn't exactly the same and the results has never been good.
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Post by highfihoney on Nov 7, 2016 17:19:35 GMT -5
Unless you replace with OEM woofers,or did some serious investigating your best off defoaming the woofers,replacement woofers will change the speakers performance .
I don't refoam anything given the cost to refoam vs a complete rebuild from the basket up isn't that big a price jump,its a simple DIY as long as your gaskets are in good shape & you get a clean surface to bond to .
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Post by hondaman01 on Mar 4, 2018 11:37:22 GMT -5
I'm not gonna misguided anyone here but.. I had a set of ohm L .at one point in time they too needed refoaming. I bought a HQ surround repair. Worked great for awhile. Then one day a buzzing sound. Ok the glue did not adhere properly. So they sat dormant for 10 or more yrs. The replacement woofers I used surround failure also. Anyway, got old woofs out ,used flexseal liquid to reattach surround and seal. Let it currently few days. Now for the test! Well them original 8in woofers sounded great! 15$ for flexseal. So what I'm saying is If the foams are still intacked somewhat u can use this to repair. If there's big holes I'm not sure , but if it is still there try this. B careful. Don't make mess. Should work also gives speaker rubber surround. Little stiffer. Nice BASS
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DYohn
Emo VIPs
Posts: 18,489
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Post by DYohn on Mar 4, 2018 12:32:16 GMT -5
Foam surround repair kits for old Infinity woofers are readily available, I've even seen them on Amazon.
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Post by simpleman68 on Mar 4, 2018 14:25:03 GMT -5
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Deleted
Deleted Member
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Post by Deleted on Mar 4, 2018 14:27:17 GMT -5
Refoaming is easy, but do not hurry.
Keep them flat on level surface, thoroughly clean the cone & basket before gluing. apply white glue (specially made for surrounds) evenly- remove excess immediately. I use green painter's tape on the backside to hold the cone in-place while gluing the surrounds to cone.
I've repair about 5-6 pair. Infinity parts are easy to find. I did some Cerwin Vega D-9 summer 2016 for my neighbor and checked them last week and still perfect.
Have denatured alcohol & razor blade (or exacto knife) available for cleaning.
$20 for surround kit or pay a pro- you decide.
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Post by pknaz on Mar 4, 2018 14:53:07 GMT -5
I had a set of the CS3006's (or was it 3007's?), I wish I still had those speakers!
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