Hi /g/ Let's fix my bookshelf speakers

>>56662780
no

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Just some old Sony bookshelf speakers, I've had them my whole life. Been sitting in storage ever since the foam surrounds deteriorated

>>56662789
/thread

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I have a pair of bullnose Advent loudspeakers that need the same repair, so we're going to call this practice for them

>>56662802
sweet thread bro! xD can't wait to see the epic conclusion! here's your bump! make sure to upvote my comment~ thanks.

>>56662834
>>56662789

Yes, this is not a gpu thread.

>>56662780
I think you may have to consider replacing the woofer drivers on both speakers, fäm. Not sure if it's worth it honestly.

Bruh, spray paint a paper plate black and use that for the repair. I'm not even fucking with you. I've been doing it since the 80s

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removed all the old surround with a utility knife. I have new surrounds from Aliexpress to attempt to install: they were bout $8, plus another $3 for craft glue. So if this turns out remotely usable, pretty good deal. These sounded great for bookshelf speakers when they worked

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According to the youtube video I watched, you have to cut the dust caps off in order to shim the voice coil to keep it centered while replacing the foam.

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I'm leaving the dust cap partially connected so I can easily glue it back in place later. Don't have new dust caps

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First one's all shimmed with some pieces of a manila folder. this keeps everything centered and holds the cone still

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Here's the spider, we want it pretty much flat while gluing the foam to the basket.

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I couldn't find an exact fit foam surround, so these are a couple mm too big unfortunately. will have to trim them down

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removing the foam from the second speaker

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scrubbing them off in the sink. probably should have done this from the start.

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all ready for work

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cut this dust cap a bit cleaner.

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here you can better see the magnet/voice coil. these should never touch

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second speaker shimmed up

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and cone pulled into place, spider not ridiculously stretched out. I think I'm doing this right, or close to right

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like I said, these surrounds are too big. so we have to trim them

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just carefully cutting off a millimeter or so. Unfortunately that huge trim ring on the basket is actually just part of the basket.

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now it fits

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this is just tacky glue from a hobby store. the stuff that comes in the brown bottle. A stereo forum said this is the stuff they like

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first we'll glue the surround to the cone, trying not to cover the whole damn thing in glue. I'll definitely make an attempt to use less glue next time

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both speakers glued up

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after an hour or so, the cones have dried. now the foam needs to be glued to the basket

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this took a lot of dicking around, probably should have trimmed the outers a bit more for better fitment. used a lot of glue on the outers.

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gross amount of glue

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now the others are pretty well set, so i'm taking out the shims and gluing the dust caps back down.

inb4 op plugs them in and they sound worse than before

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this is the next morning (today). all done. They don't look great, but they have grills so who cares. Just hooked them up and they sound great again!

Pretty sloppy looking glue work, but as a high-powered audio enthusiast this really has my attention.

not bad OP
do this to ~5 more speakers and you could get a job with it.

>>56663651
yeah I feel like the next set will work out better. I have a pair of KLH bookshelf speakers that need the same thing done

going to work my way up to the Advents, really want those to look good

>>56663744
My experience is mostly in car audio, but the concepts are the same. You did pretty good especially for such a cheap fix, but next time get a soft plastic scraper and a damp high-thread-count rag to remove excess glue before it dries and you might have a more visually pleasing result.

>>56663841

thanks for the advice! I'll definitely try that on the next set.

>>56664227
Sure thing, and good luck. Repair like this is great for when you score a nice set that someone is throwing out because they're "broken." A friend of mine got a set of vintage Klipsch Heresy II that someone was throwing out. All they needed to work was a little soldering work on the crossovers. They sound great, and used ones regularly sell for around $400 even though they're decades old.

>>56662780
That is some substantial foam rot right there

>>56662780
Interesting thread, seriously

>>56662780
There's kits for that.

>>56663651
More white goo than a conjugal visit.

Waiting for updates.

Seriously.

>>56665551

Nothing left to say really, been using them all morning and they sound great again. Learned some things while doing it, will use faster drying glue next time and wipe off the face of the cone, will also order replacement dust caps so I don't have to recycle the originals.

>>56665839
oh, nice

some photo of finished job?

>>56662780
Nice blog

>>56662986
Siiiiiicckckck IBM Model M. Typed this with some Cherry MX Blues, and I'm still jealous of that classic buckling spring.

im thinking of repairing a pair of Allison al100 speakers

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>>56666144
Ayyyy

>>56666144
>>56666684
God DAMN I really wish a buckling spring board with the aesthetics of a modern TKL board existed.
They're all so fucking bulky and ugly but they feel great to use.

Currently using an MX green board but it just isn't the same.

>>56663050

Where can I found new foam?

>>56666684
You post the same bench at least twice, go kill yourself.

>>56666666

>>56666803
pleeeeeeeease

>>56667359
eBay, Amazon, Ali

>>56663008
>>56663022
>>56663050
You know you can just hook up an AA battery to the terminals and it will keep it centered for you, right? Otherwise, just hook them up to a receiver and just play a low tone through them.

https://www.youtube.com/watch?v=NpMYZq-
qQNo

>>56666803
>>56667359
eBay, amazon, aliexpress, simply speakers (kinda expensive), etc.

>>56670284
I fucked up the link.
https://www.youtube.com/watch?v=NpMYZq-qQNo

>>56662780
Time for a recone.

Holy shit dude you could have just put duct tape over the hole.

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>>56671142
no because sometimes the 200-350Hz will sound like shit if the coil is not centered.

Nice thread OP, I enjoyed it

I love you OP, what a nice thread