ADS Driver roll call

There has been an excellent ADS roll call that could use additional information. So since that is a long thread, I'll ask here to have the list checked by anyone that wants to and to add the drivers used in the speakers.

Here is the post with the updated speaker information:
http://audiokarma.org/forums/showthread.php?postid=773068#poststop

Here is the thread that post is in:
http://audiokarma.org/forums/showthread.php?t=69719
Please add to this linked thread if you have ads speakers that are not listed or different/additional information about any that are.

This thread is to determine the drivers used in the speakers and whether they are original or replacements. So I will start with the information I have determined about my two pair of ads speakers:

The 810 (no L) in my model designation has push-in wire connectors are 4 ohm and contain:
206-0117 Tweeters (replacements)
206-0211 and 206-0212 Midrange (replacements)
206-0317 Woofers (originals)

The L990 is an 8 ohm speaker with 5-way connection on the bottom and contain:
206-0117 tweets (original)
206-0217 mids (original)
2-10" woofers numbers to be determined. These have double stick gaskets and they are hard to remove without damaging the wood so it may be a while until I add this information.

Note that Soundmotor does an excellent job of discussing the drivers on this thread: http://audiokarma.org/forums/showthread.php?t=44406

If you can post which speakers you have and the drivers they contain and if they are original drivers or tagged as replacements, maybe we can get a better idea of all the speakers ads produced during their heyday.

Thanks in advance for any information. Now to find someone to make a speradsheet to post.

Not a speadsheet but a list of what we have so far (down through post 14). I still need to look at the woofer in the L990s and Paul owes us the numbers in his speakers. Anyone else want to add to this?

L520
0206-0100 tweeters (original)
0206-0323 woofers or 206-0328

L520
206-
L730
206-0107 tweeter
206-0206 midrange
206-0324 woofer

L570
206-0116 tweeter
206-0344 woofer

L780/I
206-0117 tweeter
206-0210 midrange
206-0345 woofer

L780/II
206-0117 tweeter
206-0216 midrange
206-0355 woofer

810 (no L)
206-0117 tweeter replacement
206-0211 midrange
206-0212 midrange replacement
206-0317 woofers

L810/I
206-0100 tweeter 206-0122 from ADS as replacement
206-0201 midrange
206-0317 or 206-0332 replacement
501-0031 crossover

L810/II
206-0107 or 206-0117 replacement tweeter
206-0201 midrange
206-0317 or 206-0332 replacement woofer

L880/I
206-0107 tweeter
206-0211 midrange
206-0346 woofer

L880/II
206-0117 tweeter
206-0215 midrange
206-0357 woofer

L990
206-0117 tweeter
206-0217 midrange
206-to be added

L1530
206-0334 woofer

L1590
206-0350 woofer

L-730
Tweeters 0206-0107
Mids 0206-0206
Woofers 0206-0324 (ten inch)

L780 series I
Tweeters 0206-0117
Mids 0206-0210
Woofers (seven inch) 0206-0345

L780 series II
Tweeters 0206-0117
Mids 0206-0216
Woofers (eight inch) 0206-0355

L-810 series I
Tweeters 0206-0100 (one inch)
Mids 0206-0201
Woofers 0206-0317 or 0206-0332 (replacement)
XO 501-0031

L-810 series II
Tweeters 0206-0107 (.75 inch) or 0206-0117 (replacement)
Mids 0206-0201
Woofers 0206-0317 or 0206-0332 (replacement)
XO 501-0042

Note that the woofer basket is slightly different between the 810 s1 and 810 s2. The s1 woofers are about 1/8th inch too big to fit the s2 cabenits (need to buy a router to make my work). Also, the tweets are not interchangable - impedence is not the same.

L-880 series I
Tweeters 0206-0107
Mids 206-0211
Woofer (ten inch) 0206-0346

L-880 series II
Tweeters 0206-0117
Mids 206-0215
Woofer (ten inch) 0206-0357

L520
0206-0100 tweeters (original)
0206-0323 woofers

A little OT here, but I just discovered that A/D/S sent me 206-0122 replacements for my L810 Series I a few years ago. According to another thread, they are L400 tweeters. Does anyone know what the performance characteristics of these are? They look identical to the 206-0100's that they replaced, but it seemed to me when I put them in they they might be slightly hotter sounding, as in louder.

GuyNoir said:

A little OT here, but I just discovered that A/D/S sent me 206-0122 replacements for my L810 Series I a few years ago. According to another thread, they are L400 tweeters. Does anyone know what the performance characteristics of these are? They look identical to the 206-0100's that they replaced, but it seemed to me when I put them in they they might be slightly hotter sounding, as in louder.

Click to expand...

Someone will know. I've noted that there have been a few 206-0100s on e-bay lately. I have one for sale and other to be listed soon (for full disclosure ). The prices are not so high for the 0100s for some reason. Maybe you could pick some up sometime and do a compare/contrast and sell the ones you don't want? Just a thought.

I'm using L-810 series I (1-inch) tweeters in place of my stock L-810 series II (3/4-inch) ones in my II speakers -- until I get the latter repaired just to keep this pair stock.

But believe me, the difference in high-freq sound is very, very subtle between these two -- so much so that I really can't tell much of a difference (if at all), and don't think too many of us would notice after about 5 minutes of listening.

I've installed a Braun 1-inch (p/n 2 422 701), A/D/S 1-inch (I), and the stock A/D/S 3/4-inch (II) in various combos (both speakers, one speaker vs. the other) and the differences might be visible on a scope, but not within my hearing range.

No impedance issue FAIK. YMMV

hawkeye mike said:

Maybe you could pick some up sometime and do a compare/contrast and sell the ones you don't want? Just a thought.

Click to expand...

That's kind of the plan...I have one good '0100 - just need another. I'm not unhappy with the 0122s...they actually compliment the OEM drivers nicely. I 'm just mostly curious about their background.

Glad to see this becoming a post. When I'm able to set my ADS up (in storage), I'll let you know what drivers are in there. I've got a rare pair of ADS L630 3-ways, and a pair of L570 2s, a 2-way speaker.

For what it's worth, I think that the midranges definately produce a noticeable, different sound- the L710s and L810s with that large midrange is different than the slightly smaller midrange in the L630s and L730s, which are smaller by a visible eye. I've no complaints with my L630s, but with the larger midranges, I think the L710s and L810s are slightly favored.

I wonder what the L780s and L880s use for a midrange. The same as the L710s and L810s, I presume.

I stole this info from another ads post. It was submitted by nathanso:


The L1590 woofer # 206-0350 10" woofer 9.4ohm.
The L1530 woofer # 206-0334 10" woofer 5.7ohm.

Components in my new to me ADS L520
206-0100 Tweeter
206-0328 Woofer

A different woofer than rallycat reported.

My speakers were owned by a young woman so I doubt any drivers were ever replaced, the cabinets were very nice and both crossovers had the spare fuses still in the holder.

Original L-500s with the Braun drivers. In fact I was told they were actully made by Braun. Not that that matters. I wouldn't trade them for anything. Thank goodness the surrounds are butyl...

4Ω
8" woofer
1" dome tweeter

Don't know the numbers never had them apart since I bought them in '76.

Braun L-810

I have a pair of original Braun L-810s. Let me know if you would like photos to upload to the ADS FTP site.

Stage said:

I have a pair of original Braun L-810s. Let me know if you would like photos to upload to the ADS FTP site.

Click to expand...

That would be great. Look for the email address in the ADS website thread and email them. Do you have any of the original literature? Thanks

I just picked up a pair of L570s and the drivers in both speakers are:

206-0116 tweeter and
206-0344 woofer (one marked replacement)

Nice that the replacement is the same number as the original.

GuyNoir said:

A little OT here, but I just discovered that A/D/S sent me 206-0122 replacements for my L810 Series I a few years ago. According to another thread, they are L400 tweeters. Does anyone know what the performance characteristics of these are? They look identical to the 206-0100's that they replaced, but it seemed to me when I put them in they they might be slightly hotter sounding, as in louder.

Click to expand...

Actually an L400e tweeter and every other speaker they made from ~90 on with that faceplate style. It was first used in the CM line then SAT, L, etc. It is a very good tweeter and it fits the cabinet route although probably not flush as the front plate is 2X as thick. The could be a bit hotter too. You might want to increase the value of the series resistor in the crossover to compensate if they don't sound right.

I have a mismatched pair of 710s (http://www.audiokarma.org/forums/showthread.php?t=131488)

The "surface mounted" tweeter in one the 710s (serial # 13907) is 206-0116.

I haven't had the tweeter, mid dome or one of the woofers out of the other speaker (serial # 17389) because the drivers are "flush mounted" and a little tougher to pry off.

While the tweeters look essentially the same in both speakers, the 206-0116 tweeter (speaker # 13907) has four flat head, cylindrical, allen head bolts/screws around the tweeter dome that attach the tweeter to its rectangular mounting plate. This mounting plate is also stamped with the ADS (all caps) logo.

The screws that surround the tweeter on speaker # 17389 are standard "round head" Phillips screws, just like those that attach the plate to the cabinet of both speakers. However, this tweeter doesn't have a stamped ADS logo.

Also couldn't get the dome midrange out of the earlier speaker to check the back because they it is too tough to pry off just to look. I presume it is the same mid dome on both speakers but note that the mid dome on speaker # 13907 also has the ADS logo stamped on its mounting plate. The dome on the other speaker has no such logo. The Phillips head screws surrounding the dome are also slightly different on each speaker too (flat head Phillips screws on the earlier speaker and round head Phillips screws on the later speaker).

Woofers on the # 13907 speaker were foam surrounds (rotten) and I sent both of them to GordonW as part of a purchase of replacement rubber surrounded woofers. Didn't get the driver number before I sent them off.

One of the two rolled rubber surround woofers that came with speaker #17389 is number 206-0318. I presume the other is the same.

The pair of rubber surround woofers I purchased from Gordon are numbered 206-0325. In an attempt to make the speakers as similar as possible, I mounted one of these new woofers in each cabinet.

Funny, finally got my MA230 back and was trying it with 200cs and noticed a short in the terminal. Had to go inside and tighten a terminal up, which gave me an opportunity to peek at the drivers.

Tweeter: 206-0102
Woofer: 206-0314

Pretty sure these are the same drivers used in the bi-amped powered 2002s but will confirm soon.

anyone know the DC resistance of the 3/4" tweeters?

The 206-0117 tweeters (3/4" dome) in my L990s have a dcR of about 3.0 ohm. I suspect other models are different.

Robie said:

Tweeter: 206-0102
Woofer: 206-0314

Pretty sure these are the same drivers used in the bi-amped powered 2002s but will confirm soon.

Click to expand...

The 206-0102 is an odd duck. Don't recall what the difference is but it was subbed to a 206-0101A later one.

The woofer in the 2002 is 2-ohm and a 206-0312. Be careful with them as you won't find any more.