Schocki

One of my winter projects while my GTS is hibernating. The base speakers on my GTS are cracked, or better the foam is gone. I tried to glue the foam but this solution does not work. The company http://www.speakerworks.net/kits.html has different DIT re-foam kits available. Very cost effective . I looked at their webpage and at the instructions and it was not bad at all. So I gave it a try and ordered a 6 inch kit - flat surrounds. The kit comes with detailed instructions, special glues, speaker foam and a brush. Cost $ 22.95

Here are some pictures from the procedure, it took me about 45 minutes to re-foam both speakers.

The glued speaker, in need of being repaired:



After the old foam removal. No problem with a good exacto knife:


The new foam ring. I had to remove about 1mm from the outside around the foam to give it a good fit.


The inner portion is glued first. A couple of bolts used as weights push the foam on to the membrane.]


After the glue has cured, the outer ring is glued to the speaker frame.



The first "new" speaker after about 25 minutes. Good to go for the next 15 years


The company Video: Click here to watch Speaker-Repair

heinrich

very cool.

Shark Attack

you didnt do a bad job there. I like you weights... good thinking.

danglerb

This is the same company that used to sell a Klipschhorn replica kit, been around a long time I think.

How do the repaired speakers sound?

Schocki

The weights are recommended in the instructions .

I will let you guys know how they sound after installation... The speakers sounded OK before the foam cracked.

Bill Ball

I've used re-foam kits from this company on some classic home stereo speakers with excellent results. Your speakers should work great. Even speakers that rattle can often be fixed in this process by recentering the cone, shimming around the voicecoil.

danglerb

As long as the spiders are ok fixing a speaker isn't too hard, replacing the spiders and its best to ship to an expert.

Podguy

Orange County Speakers in Orange County, CA sells a similar repair kit.

Schocki

The speakers are not back in the car, but I hooked them up to a normal stereo yesterday. They sounded great again! Hopefully it stays like this....

Chazz

I did the identical repair on those speakers in my car two years ago and they are still working very well. I now need to do the same job on the door speakers but can't figure out how to remove them without breaking the surround ring.

Schocki

Remove the surround ring very gently. With a screwdriver type tool, there is no trick. Just be careful.

ROG100

Some of the 87 to 89 cars had srewed on rings - the whole ring rotates to unscrew - make sure which type you have.

ROG100

Nice instructions all the way from Bavaria.
I will try it on my GTS rears instead of replacing them.

Schocki

Hi Roger

Finally a first update.

Started today to get the car ready today for the big TUEV (German state inspection). Connected the battery and everything checked out just fine. I will start the engine on Sunday before I get some temporary license plates next Monday

This was also the first time for me to try the "new" re-foamed speakers. I know they are not state of the art anymore and any Hifi freak would have thrown them out....
BUT they sound very nice, if I compare the sound with what I had before!!! They are not comparable to the subwoofer in my 944 S2 with a separate amplifier, but still very nice deep base sound.

This is one of THE very inexpensive but very effective repairs for your 928!

Just like Anchor Motor Mounts. You have no idea what you're missing until you replace them.

SeanR

Good advice there Schocki, thanks. Today I was listening to some rather good music, and started to hear a fluttering out of my 6's.

BTW, when are you coming back home? You are missing a lot.