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Help me resurrect my AR-90s

So, I pulled my AR90s out after many years of storage and it looks like the woofers as well as the surround need to be replaced.

My dad bought these back in England in the late 70s for $350 for the pair..."the only time I ever bounced a check he says!" Anyway, he gave them to me in 1997 when I joined the Air Force and I've drug them all over the world from Maine to Pennsylvania to Colorado to Italy to Alaska and now back to Colorado. I haven't used them for over 10 years. I've recently gotten back into vinyl records and I'm wanting to set up as system with the old AR-90s.

Where can I find replacement woofers that won't change the factory sound? Anything else I should check on them before I crank them (once the woofers are fixed?
dtotheatothevtothee

Showing 8 responses by dtotheatothevtothee

dtotheatothevtothee OP
18 posts
 
Here are some links to pictures. Please let me know what you think replacement/repair wise. Can the ones with the pushed in cones be fixed somehow?

Do you feel it's worth putting $500 or so in these to "resurrect" them?

http://tinypic.com/r/o8w7ro/7 - Right 8"
http://tinypic.com/r/jfzujm/7 - Right 10" A
http://tinypic.com/r/51xczp/7 - Right 10" B

http://tinypic.com/r/27xnkpd/7 - Left 8"
http://tinypic.com/r/314uzuv/7 - Left 10" A
http://tinypic.com/r/xp62o7/7 - Left 10" B

Thanks...this is a very helpful forum!
dtotheatothevtothee OP
18 posts
 
Also, I was told to replace the capacitors. I've read to go with thin-film types. I was wondering what values and how many I need for each speaker.
dtotheatothevtothee OP
18 posts
 
Yeah, I plan to refoam myself. A local fella has volunteered to help me do the first set for me to learn. He has a garage full of AR stuff! I've ordered the 8" set from vintage-ar, but the 10" set currently on ebay doesn't say it's for the AR-90 model, so I have a message in to ask Larry if they will still fit.

The link you left for the caps didn't work when I cut & pasted it.
dtotheatothevtothee OP
18 posts
 
Got it, thanks!
dtotheatothevtothee OP
18 posts
 
I'm not really sure where the shims go...directions are not very clear to me.

"Place three shims equally spaced around and between the coil and the pole piece. Push then gently all the way down into the air space betwees the coil and pole piece. This will center the voice coil and help hold it centered as you perform your work."

I 'm not quite sure where I'm supposed to be putting these 3 shims.

I see a picture like this: Shimming?

but my AR-90 woofers look different and I dont see how I can stick shims in there as the "black goop" is all around that thing in the center.

Here's a pic of one of my woofers:
Mine
dtotheatothevtothee OP
18 posts
 
Ah that is a second dust cap? I thought the domed one I cut off was the dust cap.
dtotheatothevtothee OP
18 posts
 
One more question...

Do I need to save that dust cap to reinstall it or is the dome replacement one I got sufficient?
dtotheatothevtothee OP
18 posts
 
There was a domed cover over top of the other black circle you see in the picture above. Are they both dust caps or is the flat black circle something I need to remove?
I don't see a gap to slide the shims in as the black goop seems to make a seal all the way around

I haven't heard from the guy that was going to help so I'm winging it!
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