Infinity Refoam Question

[geode]

So I got my kit and pulled the woofers on my Reference two speakers. The foam was glued to the front of the woofer. I always thought the foam was glued underneath the woofer. The back of the cone looks really clean like it had never been foamed. Does infinity glue the surrounds to the front of the cone. Thanks.

 

[veloceleste]

I'm refoaming a couple of the 5-1/4" and 4" drivers in my P-FR's and the 5-1/4's have the foam on the top of the cone and 4" have the foam behind the cone. If it looks clean on the back then the foam probably goes on the front of the cone.

 

[Sir.Byrd]

It varies with every speaker and can't be generalized to any manufacturer, but you will want to follow where the foam was glued from the factory.

 

[Strawman]

I had the pleasure of hearing a pair of Reference II's at Amsoilman's over the weekend. I believe the woofers were redone by Watkins, and it looked like the foam was on the front to me. You might want to double check with him.
Dgwojo also redid the x-overs, very lively sounding speakers. :thmbsp:

 

[geode]

I had the pleasure of hearing a pair of Reference II's at Amsoilman's over the weekend. I believe the woofers were redone by Watkins, and it looked like the foam was on the front to me. You might want to double check with him.
Dgwojo also redid the x-overs, very lively sounding speakers. :thmbsp:

I cleaned them up real good and glued the foam to the back of the cone. It just doesn't make much sense to me to glue them to the front. Anyway, they sound as good as new. A great pair of little speakers to be sure.

 

[BrocLuno]

All my Infinities so far have had the foams on the front.

 

[highfigh]

So I got my kit and pulled the woofers on my Reference two speakers. The foam was glued to the front of the woofer. I always thought the foam was glued underneath the woofer. The back of the cone looks really clean like it had never been foamed. Does infinity glue the surrounds to the front of the cone. Thanks.

Infinity used two different cones. One was just conical and the other had a transition from the cone to a flat area, where the surround attaches. Most drivers I have seen have the surround attached to the front of the cone.

The cone pushes out and if the glue joint fails, it's separate from the surround easier than if it was pulling the surround with it.

 

[geode]

Infinity used two different cones. One was just conical and the other had a transition from the cone to a flat area, where the surround attaches. Most drivers I have seen have the surround attached to the front of the cone.

The cone pushes out and if the glue joint fails, it's separate from the surround easier than if it was pulling the surround with it.

I guess I glued it up wrong then. It still sounds great, though. It actually looks much better with the surround glued to the back, too. Almost all speakers I'm familiar with have the surrounds glued to the back of the cone. Not sure why infinity does it different.

 

[elgato8905]

I've refoamed over thirty sets of speakers including two sets of infinities. I've probably owned over 100 sets of speaks. I think I can count on one hand the number of speakers I've had where the surround attaches to the back of the cone instead of the front. I can't ever recall seeing a pair of infinies that have the foams glued to the back. Mostly it's JBLs that I remember.

 

[Army]

I guess I glued it up wrong then.

I think it matters very little in the grand scheme whether the surounds are on the front or back. I've done quite a few over the years and even went so far as to compare both ways on the same woofers and couldn't hear any difference.

 

[geode]

I think it matters very little in the grand scheme whether the surounds are on the front or back. I've done quite a few over the years and even went so far as to compare both ways on the same woofers and couldn't hear any difference.

I agree. They sound as good as new.

 

[analogman]

I cleaned them up real good and glued the foam to the back of the cone. It just doesn't make much sense to me to glue them to the front. to be sure.

Makes just as much sense as surrounds coming in dozens of shapes and sizes.

I recently (past 2 months) have done (8) woofer re-edge jobs.

(6) Jensen "Advents" and a pair of 10"s from some "AR"-5s

All had the foam edge attached to the front.

The 2000 IIs playing right now as I write this have their top suspension attached to the face of the cone.

It's by design, deliberate and has a functional purpose (which side of the cone).

Controls and defines excursion: if there's a problem there, and with the right material, you'll hear it.

Glad you're happy with them.

I can't live with guesses like that; especially now that we have the internet.

Enjoy,
Craig

 

[analogman]

I think it matters very little in the grand scheme whether the surounds are on the front or back. I've done quite a few over the years and even went so far as to compare both ways on the same woofers and couldn't hear any difference.

That may be so, but if you sweep the driver when done, you'll see the difference. What does that do to system and cabinet response? Go figure, but 9 times out of 10, it'll be different. Perceivable aurally? Only your hair dresser knows for sure.

When I do restoration work, I make every effort, and take advantage of every resource I can, to restore the piece I am working on to as close as possible to specs.

I don't obsess in the extreme, like the JBL PURISTS that insist that anything less than a complete RECONE job is heresy, but I do strive for accuracy.

Information on the details is fairly easy to come by nowadays, and THAT'S where God is.

Changing the ultimate throw of a bass transducer willy-nilly is a "mod". The driver is no longer original.

I personally only know one guy capable of that sort of thing, Bill LeGall.

Otherwise, I stick to the "stock" design.

Craig

 

[analogman]

And frequency networks don't count.

I can save the old parts to satisfy the "collector" angle and reversing the change is relatively easy, if desired.

Craig

 

[geode]

You guys keep this up and I'll be heading to the garage with my exacto knife

 

[Yamahalic]

I've refoamed over thirty sets of speakers including two sets of infinities. I've probably owned over 100 sets of speaks. I think I can count on one hand the number of speakers I've had where the surround attaches to the back of the cone instead of the front. I can't ever recall seeing a pair of infinies that have the foams glued to the back. Mostly it's JBLs that I remember.

My Infinity SM-122s woofers have the foam glued to the back of the cones (I bought them new). It was a big issue recently when I had to refoam them, and I could not do a good job because 1) the supposed "correct" 12" foams were too large, and 2) I could not figure out how to glue the foam to the back of the cone cleanly. Anyway, I wanted to maintain the original look, so I paid some pros to do it.

The other cool thing was that the dust cap had an Infinity logo on it, but I have not seen this on the higher level Infinity speakers.