Jordac

I hope you got things figured out!

Thanks, Bill. Interesting information. PVA is a good moisture barrier, so maybe that’s part of it. I live in Alabama, so I guess that will make my surrounds a high humidity test. Also interesting...I’m an original owner of a pair of LC 110s from the mid-late 80. They have the cone coating. Thanks again for your reply. Best, Chris

I have the advent 300, too. I agree; it sounds super sweet. My advent started to lose power in one channel , so I took part in David Eaton’s “swap” program. Basically, you send in your old one in with $300, and he turns around a recapped/refurbished/amazing unit with your original faceplate. Kind of expensive, but he does good work, gives helpful advice, and I really *needed* my little Advent . The advent’s phono stage is almost cultishly good, but lower quality build, as I understand. This guy has a whole thing set up devoted to Advent 300, and he turns them around as good as, if not better than original. https://davidreaton.com/advent/model_300_receiver_main_page/300_repairs/

Does anyone know what the surface treatment on Allison driver cones consists of? My question emerges in a roundabout way. I recently replaced the surrounds on my Al-120 woofers. The new surrounds came with a PVA post install application treatment that is supposed to increase their longevity. While applying, a wee bit got on one of the cones. It dried clear and a bit tacky, very much like the original treatment, but looking fresher. Got me thinking about, but hesitating for now, to cover the whole cone. I should probably leave it be, but figured it is worth some other opinions. On another note, I’ve temporary installed some Madisound SB tweeters (https://www.madisoundspeakerstore.com/sb-acoustics-soft-dome-tweeters/sb-acoustics-sb26stac-c000-4-1-textile-dome-tweeter/) until I can find some decent replacement originals. I have a stash of 3 mismatched and beat up Allison tweeters, but the two best are in another pair of Allisons. I know this might be blasphemy here, but dare I say the SB tweeters sound pretty good (to me, at least). I placed an Allison tweet in one speaker and the sb in the other, comparing them in mono. The SB tweeter sounded fresher, cleaner, warm and round. The Allison tweeters in my stash are well over 30 years old, so perhaps time and abuse hasn’t been kind. So for now, I rest easy and enjoy the SBs. The speakers on whole sound very sweet in my little budget nostalia system, with my Advent 300 pre-and Adcom GFA 535-II power amp. I’m playing vinyl, CDs and even streaming (Allo streamer into Schiit modi 3 and then into the Advent), and basically enjoying the heck out of the Allison Al-120s!

Thanks, Bill. I would certainly prefer original tweeters. No sign of corrosion...maybe was just a dud. Hopefully can get a return/replace. . BTW, what is “NOS”? Another thought... I have a few Allison tweeters in various states of functionality. Is it possible for someone skilled to restore working units from various cannibalized parts? For instance, can sound paper cones be removed from dead coils to fix other units? Thanks, Bill. I’m awaiting a response from the seller. We’ll see! Are there any recommendations for non-Allison replacement tweeters? I’m considering something as a stop gap, until I can get the real thing. I found these... any thoughts? https://www.madisoundspeakerstore.com/sb-acoustics-soft-dome-tweeters/sb-acoustics-sb26stac-c000-4-1-textile-dome-tweeter/

Thanks, Bill. I’m awaiting a response from the seller. We’ll see! Are there any recommendations for non-Allison replacement tweeters? I’m considering something as a stop gap, until I can get the real thing. I found these... any thoughts? https://www.madisoundspeakerstore.com/sb-acoustics-soft-dome-tweeters/sb-acoustics-sb26stac-c000-4-1-textile-dome-tweeter/

Thanks, all. So, will the ACD-2 tweets labeled for "autosound" sold from (link below) theoretically work in the LC-110 and /or AL-120? I'm trying to determine whether the item I ordered from below is defective or incompatible. It does produce sound but at about 1/2 the volume (or less) than the original tweeter. Before I go through the hassle of haggling with said vendor for replacement/return, I just want to be sure this should work, theoretically. Thanks so much, Chris https://www.ebay.com/itm/NEW-Original-Allison-Acoustics-2-WAY-CONVEX-DIAPHRAGM-TWEETER-ACD-2-NOS/173020890011

I have a pair of Allison LC110s from the late 80s. One tweeter died (no sound, although it looks fine), while the other is slightly crushed in the dome, but still works. I did find a replacement from said “major auction site” for one, which works great. I have since found a replacement for the other from an automotive audio company, the same as what Stubotny posted, the ACD-2. This has the grill. When hooked up, it hardly produces any sound. I suspect this model is incompatible with the LC110, perhaps because it is for an automotive system? Thank you in advance for your help. Chris