Speaker repairs

These aren't HPM-100 speakers by any chance? I saw woofer repair kits for these on ebay just the other day.

Steps 8 & 9 comprise one generic method, which may be of some help. But this certainly doesn't apply well to every speaker, so YMMV:

Simplyspeakers.com refoaming service.

Mark Z.

Not ever speaker is a candidate for refoaming. If you don't use the shims (and take off and replace the dust cap, you run the risk of off center rubbing voice coil. also, if ALL the foam is rotted out and the speaker was run like that, the voice coil former may be warped or bent now making a refoam a futile effort.

certain cones are more problematic to refoam. The best situation is paper cones with foam on top. The worst are plastic cones and cones with the foam stuck to the under side of the cone. Its takes a lot of careful prep work to scrap all the old foam off the cone and the frame to make a good surface for the replacement foam to adhere properly. They usually use a glue like airflex 400 (looks like white elmers glue)

What's a refoamers nightmare? Bose 801's.

Bob

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There are a lot of people who claim success refoaming certain types of woofers (ones with large gaps like Advent or EPI) without shimming the voice coil. I always shim the VC when refoaming. Cutting away the dust cap, shimming, and replacing the dust cap is very easy and quick. Removing the old foam/glue, cleaning the residue, and glueing in the new foam is very time consuming and tedious. If you skip the easy part (shimming) you risk having to do the PITA part (replacing the surround) over again.

If you have not bought the new surrounds yet, check with wooferrepair.com. They sell surround kits which include an excellent how-to DVD. If you have never done it before, the instructional DVD alone is worth the price of the whole kit.

Paul

the price of the whole kit.

Thanks for sharing this info. I downloaded the video as well - a good tutorial!

-- Adrian C

I have re-foamed a number of 10 and 12 inch woofers. If the speaker is in good shape except for the foam surround it should be simple to remove the old foam, carefully scrape all the old residue off the paper and the shell, and re-glue in a new surround. Take your time and be careful. You need to either get a kit specifically for your speaker or make sure that the kit supplied can be trimmed to fit properly between the shell and the paper.

Good luck.

tim

I ordered my woofer repair kit via U.S. mail a week ago to day from WooferRepair. I got the kit today, 7 days later. I figure that's pretty quick considering I ordered by mail so I could pay by check. Everything looks great, just as specified at their web site. Now if I can get my part done. RM~

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I did my first set of 10 inch woofers using the wooferrpair.com kit and everything went great. I got a little anxious on the first one and attached the surround to the cone after letting the glue set for only 5 min which kept me very busy pressing out the wrinkles for about 30 min. I waited

10 min on the second one and everything went well, didn't need any clamping and the joints actually pulled them selves tighter as they dried.

Shimming was a piece of cake with the plastic shims that wooferrepair supplied. I don't know but suspect that using the paper shims supplied by some vendors could be a nightmare as it takes a little force to get them in, might have to soak them in a solution of viagra.

Someone mentioned that they used tacky glue from a crafts store to attach the surrounds. Out of curiosity I picked up a bottle of Aleens "original tacky glue" (they have several different types). I tested it and compared it with the glue supplied with the kit and it has the same amount of tackiness after drying a few min and even smells the same (If it looks like a duck, quacks like a duck, it's a duck). I do believe that in my next woofer repair (I have several more to do) I will use the $2 surrounds from MAT electronics and tacky glue but highly recommend wooferrepair.com for the first time. RM~

I just bought a kit from a local supplier off eBay. I didn't actually know that they were local, but used them because they supposedly had a kit that was specific to my particular woofers. Turned out that it wasn't; but it was close enough.

The kit came with paper shims, which were kind of a PITA, but not impossible even for a 1st timer. I expected new dust caps, but instead I got instructions to slice around the periphery of the caps, then reglue them. I can't even see the joint; but this obviously wouldn't work with an aluminum cap.

All in all, the job turned out well; and I'm very pleased with the effort. The $14.99 thrift-store EPI's sound great!. Do you have a link to MAT? I have enough glue left to do at least four more 8"ers and shim stock appeared to be simply card stock. No reason to spend another $25 for the next pair if I can do it for $4.

jak

them.>Do you have a link to MAT?