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ADS L810 restoration/repair

I have my 810's on 12" stands that are placed three feet away from the corners. With this placement, I experience no boominess whatsoever.

The woofers are in individual sealed chambers and are wired in parallel so the output of each should be roughly equivalent.

When you have the lower woofer removed, tighten the two screws that attach the speaker terminals to the crossover pcb. If I remember correctly, DCR dropped to 3.2 ohms after tightening the screws.
 
As far as the grills and dust, my L980s had a layer of cloth glued to the back of the metal grills when I got them. The cloth appears to be the same material as landscaping cloth (the stuff you put under mulch to prevent weeds, which never works).

Personally, I like being able to see the drivers through the grills and the cloth was falling off anyway, so I removed as much as I could.
 
PabloX said:
As far as the grills and dust, my L980s had a layer of cloth glued to the back of the metal grills when I got them. The cloth appears to be the same material as landscaping cloth (the stuff you put under mulch to prevent weeds, which never works).

Personally, I like being able to see the drivers through the grills and the cloth was falling off anyway, so I removed as much as I could.
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The cloth on my 980 grills is in tact, and I just flipped the grills around so the fabric that extends the the grill bottom edge now protects the drivers from dust, and sounds exactly the same to me.
 
It never ever occurred to me to do this. It's moot now because I've customized my Surround L810's but should I ever pick up another set of ADS speakers with metal grills I just might try this.
 
HowlerMonkey said:
update 6/2/18:

1) speakers tested at 3.9 & 4.1 ohms.

2) I bought an RB-976 mkii, 60W x 6 @ 8ohms, 4ohms stable, 150W bridged @8ohms (bought
(I already have a set of modified HPM60's powered by another Rotel amp, RB956 30W x 6,,,,and an active crossover....so you can get can an idea where I am going with the ADSL810...)
http://audiokarma.org/forums/index.php?threads/hpm-60-crossover-rebuild-vs-active-crossover.786923/

3) first impressions powering the stock ADSL810.....with the 60W the Rotel amp has to offer....
* acoustic suspension rules!
* 60W is not enough for the 810s (I don't want to test the bridged mode because the speakers impedance is just tooo low....my plan is to go 60W x 3 per speaker...as you can imagine)
* midrange is sweeeet, even with these old-unrestored drivers I have enjoyed every session I have played with them......I have several SADE records & CDS which include my to-go test songs, and ohh boy they deliver.....will save money for the now famous Mr. So. treatment for sure....I want to keep these 810's for a while.
* Tweeter is not fatiguing to my ears.....I listen @ ~75dB, 9-10ft away, 30-45mins sessions, and they are a joy.....yes they are sharper than the KLH/CSW model Six's....but I know I am missing a small chunk of the songs when I play those.....the HPM60s are sharper than the ADSL810 but I was able to tame the HPMs with an active crossover.....the 810 might not need as much tweaking.
* boomy bass? short answer yes....I have the HPM60s with the 10" woofers right next to them and my initial impression is that the HPMs are more controlled below 800Hz...can't prove it yet...but I plan to buy a mic for REW this summer....and also record some sample songs when times permits......I am curious to see how they sealed and wired the 8" drivers in there (do they have the same volume?)....I will open them soon.
* fun speakers no doubt....can wait to get back home friday nights to crank them up.
Click to expand...

Let me say this Howler, I absolutely know what your saying. I work 6 nights a week my friend and I can't wait for Sunday to roll in so I can turn this system on and enjoy my ADS's. It's a pure joy and I just cannot think of a moment I've ever had this system on where I wasn't smiling. From what I've gathered, and though my own personal experience, soft domes are never fatiguing. Horns fatigue me very quickly, which is not to say they don't have a place, quite the contrary to be sure, but for my tired ears It's just a pleasure to sit and listen to the warm sound that my system with it's soft domes provides to/for me.

As far as the inside of those L810's, there is a baffle in there that separates and seals the two woofers in their own space. The wires are fed though a hole and sealed using some type of clay material. The inside baffle is angled so as to give the woofers equal square footage inside the box. The top woofer shares the same space as the Tweeter and Midrange.
 
GD70 said:
The cloth on my 980 grills is in tact, and I just flipped the grills around so the fabric that extends the the grill bottom edge now protects the drivers from dust, and sounds exactly the same to me.
Click to expand...

Any chance you could post a picture of the back of the grills with the cloth?
 
Arthur Smith said:
I sold my pair. They are gigantic, and whoever categorized them as "bookshelf" speakers was completely out of their mind. Amazing midrange. Not great soundstaging or separation, at all. A fun speaker that I did grow tired of.
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Arthur Smith said:
They are certainly loud. but I did become fatigued by the sound. I have too many other speakers that I enjoy more. My daily drivers are KLH Model 6's, which to my ears, have a much nicer sound.
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Arthur Smith said:
Glenn, I see you are still on the ADS bandwagon. I flipped mine. Just got so tired of the sound. My Model 6's, despite being inferior, are still my daily drivers! Arthur
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Really, dude??
 
PabloX said:
Excellent! Thank you sir. Would you agree that's the same material as landscape fabric?

Realizing I said I like being able to see the drivers, there's something to be said for original.
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Landscape fabric, I can't say. The fabric on the grills is very thin, almost tissue paper thin. I think @Porkloin said it is like upholsterer fabric on the bottoms of chairs and couches.
 
GD70 said:
Landscape fabric, I can't say. The fabric on the grills is very thin, almost tissue paper thin. I think @Porkloin said it is like upholsterer fabric on the bottoms of chairs and couches.
Click to expand...

Thanks. Now that you mention it, that does seem very similar also.
 
PabloX said:
Excellent! Thank you sir. Would you agree that's the same material as landscape fabric?

Realizing I said I like being able to see the drivers, there's something to be said for original.
Click to expand...

GD70 said:
Landscape fabric, I can't say. The fabric on the grills is very thin, almost tissue paper thin. I think @Porkloin said it is like upholsterer fabric on the bottoms of chairs and couches.
Click to expand...
It's commonly called upholstery underlining and costs next to nothing at the fabric store. Joanne's sells it for more, but it's still pretty cheap. A lot of people mistake it for cambric, but cambric is a little thicker. Landscaping material is quite a bit more dense.
It was cheap enough to do my entire grill(s) (95 cents a yard at a fabric shop I drive by often in my travels), which means my pristine "So-a-fied" domes will stay that way.

Upholstery Underlining.jpgPhoto_176_Grilles.gifPhoto_10_CompleteMidrange.gif
 
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