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Old 11th October 2008, 09:32 AM   #1
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Join Date: May 2008
Default Free modified AR3a "improved" crossover

If anyone could have some interest?

Free schematic crossover at:

And press the button "AR3a"

The attached file may be to small to read.

Find special resistors at the same site.

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File Type: jpg ar3a improved_schematic.jpg (29.1 KB, 327 views)
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Old 11th October 2008, 08:56 PM   #2
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There is no "AR3a" button on the link presented. Please provide more information. Thanks...
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Old 11th October 2008, 09:18 PM   #3
TerryO is offline TerryO  United States
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Location: Seattle,Wash.
Ditto what Scott Valley stated.

As an aside, I'm always interested in seeing the various mods for the AR3a speakers. It's also nice to know that there are others that evidently share this interest and feel that the "Classic" AR's are still able to deliver the goods.

Best Regards,
"If you have to ask why, then you're probably on the right track."
quote from Terry Olson's DIYaudio Forum application
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Old 12th October 2008, 04:58 PM   #4
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Default Don't know what's going on!

Scott valley,

I shall try ones more

ore else try: and you will find the mentioned site.

Should be a " AR3a" button


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Old 12th October 2008, 05:25 PM   #5
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Default Best sound of all!


Hi TerryO,

I have had a lot of speakers in the past - JBL 2203, 2213H, 128 H, 124 a , and others , Infinity Kappa 7 , IMF transmission line TLS80, KEF Coda, B139 , Tannoy dual Concentric, and many more. Still the AR9 , in my opinion, beats them all ! The punch and the perspective, places the AR9 in a category for them selves!
I use the AR3a because of the space I have available today , and they do the job great. I still wonder how they did it with the 11" woofer? - have been looking very closely to the "soft" cone of the AR 11" woofer, and the fibers is placed geometrical 90 degree on each other like many others. The softness of the cone must have something to do with the "break up" and the acoustic suspension. I need further messurements in 3D scope before I know for sure.

Bottom line is: " Never heard a 11" woofer with the same punch"!

Try "Dead Set" Grateful Dead in vinyl - you will not be dissapointed!

That's why I am making my "personal" AR3a "Improved"

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Old 12th October 2008, 06:51 PM   #6
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Default Web problem?

To all,

One problem to connect the site has occured. Informed by .

For the time being use :

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Old 12th October 2008, 07:15 PM   #7
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Default Web problem?

To all, has a problem. Please wait - will take care of the problem as soon as possible.

The non payment sites, like , available at could be the reason?

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Old 13th October 2008, 02:45 PM   #8
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Default How to renew 11" woofer surroundings


try to look at the pdf. file attached. This is from Holland, where you can buy new surroundings, including special glue for your projects.

It is possible to specify the brandname - AR 11" , JBL ( 2203a) etc. , and they will advice you the presize foam or rubber diameter.

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