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Can ADS tweeter sticky domes be cleaned?

LBPete

Rolling Along
Subscriber
I have some ADS sticky dome tweeters that have crap stuck to them. Is there any way to clean them without farking them up?

- Pete
 
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I've tried, but to no avail. Mine were too close to a Christmas tree one year. Ugh!!!

I used tweezers and a real, REAL dull pin to assist removing most (but not yet all) of the needles.

Blue Spruce, I believe.
 
LBP, if it's just dust it won't effect the sound and I wouldn't bother. But if it's something more substantial, like TDH stated, you can use tweeters. Another option would be to have Richard So rebuild them if it really bothers you. But most likely they are fine and you don't need to mess with them. Interesting enough my 1980 versions with metal grills have lots of dust on the domes but my 1975 versions with cloth grills have almost no dust. One downfall of having cool looking metal grills I guess.
 
Hadn't thought about the difference in dust between metal and cloth grills. It makes sense. These are metal grills. The woofers were filthy and the tweeters have a lot of fuzzy crap stuck to them.

- Pete
 
Pete, I'll probably line my metal speaker grills with a thin cloth, to avoid future dust collection. Shouldn't affect sound too much. I suspect.

My ADS L630s with cloth grills are pretty clean. It's my metal-grilled ADS L570 IIs that are a bit dirty.

I thought of using some Goo-gone on them, with a Q-tip, but I'm concerned that I could damage them.

Maybe a piece of masking tape, rolled into a circle, then placed over a few fingers, might work. Try low-tac first, and just touch the tweeters lightly with the tape. Used this to remove cat hair off clothes before. Maybe it'll work with the tweeters?

Try it out, and if it works, let me know. Before I do it to mine... :D
 
Non-metallic tweezers & time is the best method.

Goo-Gone will remove the dome damping compound along with the schmutz.
 
timely question. just bought a pair of 570s off ebay which are in unexpectedly excellent shape. only problem is what looks like a piece of paper that got stuck to the tweet. I will try tweezers to get what I can, then live with it.

Also, there is some fabric glued inside the metal grills and it is coming off one of them. Do you all recommend some kind of spray adhesive to reattach it? Would you just pull it off altogether?
 
voodoo lounge said:
timely question. just bought a pair of 570s off ebay which are in unexpectedly excellent shape. only problem is what looks like a piece of paper that got stuck to the tweet. I will try tweezers to get what I can, then live with it.

Also, there is some fabric glued inside the metal grills and it is coming off one of them. Do you all recommend some kind of spray adhesive to reattach it? Would you just pull it off altogether?

Use 3M 77 spray adhesive.
 
soundmotor said:
Non-metallic tweezers & time is the best method.

Goo-Gone will remove the dome damping compound along with the schmutz.

Guys, thanks for the feedback. Tweezers won't work on this dirt. It will take some kind of cleaner like detergent or solvent. Can the damping compound be replicated and re-applied? I have a couple of blown tweets that can be used as Guinea pigs.

It's not clear to me how these tweets operate. Do the domes oscillate to create the sound?

- Pete
 
I tried cleaning them. I used 3M adhesive remover on the test tweeter dome and it removed the sticky residue nicely. This dome was very clean to begin with. Then I tried the same thing on one of the dirty domes. They just have too much crap stuck to them. I was going to take a lot of scrubbing to get it off so I gave up. I'll live with them unless they really start to bother me. Then I'll get them reconed.

- Pete
 
LBPete said:
I tried cleaning them. I used 3M adhesive remover on the test tweeter dome and it removed the sticky residue nicely. This dome was very clean to begin with. Then I tried the same thing on one of the dirty domes. They just have too much crap stuck to them. I was going to take a lot of scrubbing to get it off so I gave up.

- Pete

Pete; I'm really interested to know how the tweet sounds without the sticky dampening goo. Isn't it an outta control shrill since the goo is by design?

--Ralph
 
I wasn't able to remove much of the material on the dirty tweeter and didn't notice a difference in sound before and after. These tweets are in little ADS 300s that I'm using as computer speakers so the sound is not critical for me.

- Pete
 
My L1530 manual describes the sticky midrange thusly:

"2-inch soft-dome acoustic suspension midrange driver features unusually high force/mass ratio for superb transient response; proprietary coating and isolated air-suspension cavity ensure extremely low midrange coloration, high linearity and long-term stability..."

I hope you haven't changed its properties too much!
 
Good stuff to know here, because I just bought all these drivers from eBay:

http://cgi.ebay.com/ws/eBayISAPI.dl...30027907963&rd=1&sspagename=STRK:MEWN:IT&rd=1

http://cgi.ebay.com/ws/eBayISAPI.dl...30027912718&rd=1&sspagename=STRK:MEWN:IT&rd=1

http://cgi.ebay.com/ws/eBayISAPI.dl...30027913051&rd=1&sspagename=STRK:MEWN:IT&rd=1

I picked up a beautiful pair of ADS 1290's with a blown tweeter and midrange in one of the speakers. The speakers are in great condition with the original boxes, paperwork and everything. I got a good deal on them because of the blown drivers. I've been waiting for a tweeter and midrange to show up on eBay for several months now. The last time I saw some of these drivers show up on eBay, they went for darn near $100 shipped. I got all three here for less than that. Can't wait to hear what these speakers sound like....


Retro
 
Last edited:
The sticky stuff was applied in a precise measured fashion and was absolutely meant to be there. It cannot be cleaned off without causing some change to the tweeter. Whether that is audible or not will depend upon how much is removed.
 
LBPete said:
I'm sure all the crap stuck to the dome affects the sound too.

- Pete

Yep. It was a pretty poor design from a longevity standpoint. Early on they switched to internal dome coating on all the car tweeters but not the home ones. The car ones were harder to make.
 
My L570's have a piece of cloth glued to the back of the metal grill. It looks like factory installed. If this is missing the chances are thats why your tweeters are getting messed up.
 
These tweets are in 300 mini speakers. They have metal grills with no internal cloth. Judging by the condition they were in when I got them, they may have been used outdoors.

They are very early 300s with foam surrounds. The foam was rotted and I picked them up for $5. The anodizing on the cabinets has some flaws so I don't want to spend a lot of money on them. I'll keep my eyes open for used tweets. They are 206-0101s.

- Pete

- Pett
 
Retro Stereo said:
Good stuff to know here, because I just bought all these drivers from eBay:

http://cgi.ebay.com/ws/eBayISAPI.dl...30027907963&rd=1&sspagename=STRK:MEWN:IT&rd=1

http://cgi.ebay.com/ws/eBayISAPI.dl...30027912718&rd=1&sspagename=STRK:MEWN:IT&rd=1

http://cgi.ebay.com/ws/eBayISAPI.dl...30027913051&rd=1&sspagename=STRK:MEWN:IT&rd=1

I picked up a beautiful pair of ADS 1290's with a blown tweeter and midrange in one of the speakers. The speakers are in great condition with the original boxes, paperwork and everything. I got a good deal on them because of the blown drivers. I've been waiting for a tweeter and midrange to show up on eBay for several months now. The last time I saw some of these drivers show up on eBay, they went for darn near $100 shipped. I got all three here for less than that. Can't wait to hear what these speakers sound like....


Retro

Like someone mentioned earlier, Richard So has the parts you are looking for I'm sure. His ebay handle is ads-speakers

BTW

Hi all, I'm new to this forum.
 
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