newandold

This is an older replacement woofer, from Allison Acoustics, appearing much closer to the original.

rFrom top to bottom: This composite pic. shows 3way tweeter, midrange and woofers offered by Allison around 2001 or so, with the Eminence woofer pictured on the bottom. The non ribbed cone and and large dust cover are very distinguishable from the originals.

The hour is late, but I have plenty of pictures.....give me a couple of days, and I'll put them up! The Eminence has a much larger dust cap and cone that distinguish it from the originals. I think they would be fine for All except in the A1's they need to go in as a matched pair. Additionally, the gaskets need to be doubled up when you put 2 in the old A1 cabinets otherwise, the magnets bang into each other, as they were intended for the newer generation A1. circa 2002. Bill

I have one of those “eminence” woofers NOS. that I bought in 2000. Actually, I bought 2 at the time. One went away on EBay inside one of the A1 speakers sold off years ago. I should sell this one soon before the surround deteriorates. At that time they were approved by RA in the reincarnated A1s but I found out they don’t mix well (One Eminence, one original) in the same cabinet. I was using a Subwoofer with an 80hz. Crossover, so the difference under those conditions was not a problem. Bill

The IC10 Cab. Is an entirely different animal as opposed to the A1. Don’t know if the internal measurements were published with or without the cabs. Populated, but certainly, both A1 drivers forward facing take up much more internal cabinet volume than the 8 inchers with one being inverted on the 10. Front panels on the IC are not flush, but more flush than the One, adding yet more internal volume. Note that the center wood strip in the front of the IC prism is nearly twice as wide as on the A1, that yields more cab. volume within the same dimensions. Bill

Hi Mike, Curious, did you ever pursue this? Bill

Yes I’m well aware the 7s are nominal 4ohm.... I said 120 watts of AMPLIFIER power at 8ohm rms per channel would be a great match for those.

Best suggestion I can offer you in your shopping travels, is to get yourself in the average of 120 watts per channel @8ohm with those puppies. Whatever you come up with, if you can get into that range and even better with a Subwoofer integrated, you will get the best out of those systems they have to offer. Bill

Frank, It’s amazing ? that just by hearing the jazz on your video I can pick up the clean, crystal clear sound you’re getting. No frequency range on a smart phone (like listening to the whole thing thru one tweeter) but if your sound was dull or muddy that would reveal itself. Bill

I grew up with AR’s in the house and YES they sounded very good. But....something was missing to my ears and indeed, I grew weary of the whole potentiometer thing. When I heard the Allison One and bought my first pair, it was pure coincidence that I discovered afterwards that Roy Allison was part of AR beforehand. Too bad the Allison slope switches never made it into the old AR’s in place of those pots...it most decidedly would have been a step up (they’re not perfect either) but at least they are virtually self cleaning, simply by sliding them back and forth, with a shot of Deoxit every couple of years. The Allison’s play cleaner and louder, and that was the real game changer. Bill

might like it! Check it out now! https://ebay.us/XN1JUu Bill

Using the balance control is a small compromise indeed! The drivers in the two versions are identical, and that’s really all that matters. Over the years, many changes occurred in the build of the Allison Midrange and Tweeter....most of those to protect the drivers from getting mashed in, but the raw performance remained the same. I use 3 pairs of Allisons in my Music/Movie system, and all the drivers, (except the woofers) have the factory protective screens. Bill

Ha Ha...……………(you can tell them I say "hi") Even on my iPhone I could hear your tweeters ! That is a very "live" sounding room, with hard wood area rug and so on. (of course no critical listening evaluation.) With some hearing loss (or without) voices can become harder to stand out in such a reverberant field. Some acoustic panel treatment on the walls could help that. Bill

Ok... I was able to view the front facing shot with the grill off. That is the correct tweeter. Those speakers look beautiful in that shot!

Hello austingonzo, Hard to characterize the sound you’re getting....seeing the tweets just to be sure they are correct. The crossovers, if unaltered, should be fine with the original capacitors (very high quality). I m running all originals without issues. Are you certain both tweeters were operational?

Someone from the Allison Speakers Yahoo! Group contacted me several months ago because there was a spirited discussion going on there involving the IC20’s. He said I was “missing out”, but I had too many problems with Yahoo (a shame, not the group itself) to go back there again. In lieu of the spam risk, there is (or was) a lot more Allison going on there, than here. Can you post a picture....I’m interested in seeing the tweeters in Your speakers. Bill

According to the Spec. sheet data, the newer (CD9) has slightly higher 90 db. SPL over the older version, that's rated at 87. So, the CD 9 SHOULD be the louder of the two. Yours is a somewhat negligible difference and even loudspeaker placement could have the other appear to play louder. Bill

I have both specs. here. Long time since I looked, and curious about the output difference. Are the EBay woofers OEM and matched? If not could easily account for the discrepancy. Bill

The way I added drivers to the Allison One was to jump to multi channel audio video, with them, starting all the way back in 2000. That brought the driver count up from 12 to 20 plus the Subwoofer, and that brought the count to 21. Adding the Subwoofer with an 80hz. Crossover point was the first most dramatic thing I ever did with those systems. I had a blast revisiting my collection of music with that integration. Its great that I got lucky later on with a pair of IC’s, but their impact was reduced in the overall system. Bill

Hi Mike, I’m sure I can dig out the dimensions on the cabinets though your specific request leaves me somewhat confused. I need to throw some water on your ambitious idea and don’t take it to heart, but at this point in time no one could possibly replicate IC20’s...no not even close, for many reasons. Not the least of which are the woofers and the reverse tube assemblies, both totally unique to that loudspeaker. For 35 years I (very happily) drove the Allison:One. If you whip a pair of Those puppies into top shape, you’ll be as close, these days as you can get. Bill

Scott, That driver is used in models 1,2,3, both versions of the Eight, yours and the IC 20. Your tale is s heartbreaker...Bill did a ton of work for me over the years. The earliest mids with front leads and no rear spades would be the toughest retrofit, but not impossible. Bill

It’s hard for me to believe that already, it’s been 6 and a half years since I parked the IC 20’s In my listening space. All is working just as it should. Bill

I know the temptation to walk away from Tnuts when the particle board strips or breaks away, but it’s important to remember that the particle board itself is the REAL problem. When the drill holes are made for the drivers, invariably one occasionally ends up where the board is weaker than in another location, so later on we end up with the problem. Carefully handled, the T nuts are just fine and I replace one that’s impossible with a nylon hollow wall anchor. Bill

Hi Tom, There was a point when I actually thought about going to the 901 for that sheer DB output those units were capable of. I preferred the overall sound of the Allison:One, but I also had a too loud habit (continuously) in those days. I went back many times and played the 901s but never went for them. Bill