[TechAssist] Re: Acoustic Research speakers AR93Q,repairopinions please

  • From: Edward Gaidies <teltek@xxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Wed, 13 Feb 2002 23:30:29 -0500

They are most likely 8 ohm speakers, since they go 4...8...16..or 32.
Tweeters are most likely 8 ohms. You might want to check with the customer,
as to what the impedance requirement is for his amplifier.
When you are finished with the installation check the final impedance at the
speaker output, with tweeters and cross-over network integrated.
The crossover network should work quite nicely with the new speakers.
As I mentioned, when you are changing the elements in both speakers,
customer should see little or no comparison between the two speakers, as
compared when you are changing the element in only one speaker. Since one
will usually sound bassier or crisper then the other speaker.
If Cathray has your size of speaker get something that fits into your
estimate, and they come in Paper cones, or carbon fiber.

-Ed-

teltek@xxxxxxxxxxxx

> 
> Thanks Ed. Now that you mention Cathray, I just received their moving
> special flyer in the mail today. Looks like they're moving closer to me.
> That is good. As for the speakers, I'm not sure how the originals are
> rated, such as power, input impedance, etc. My measurement of 8.6 ohm
> across the woofer doesn't really make sense to me. Usually 8 ohm
> speakers that I measure, show about 6.2 ohm on my meter. Does this mean
> these woofers and midranges are 10 ohm impedance? Also, would the cross
> over frequencies match up if I replace with third party parts? If I can
> get the specs from somewhere, then yes I would go for replacement parts,
> as long as they are good quality. I can ask Cathray for their opinion.
> Maybe they've sold parts for replacements in Acoustic Research in the
> past, but then again they may just sell me anything to get a sale. How
> do you find them in that regard?
> 
> Also checked the site you mentioned but can';t seem to load the pages
> properly. Maybe later.
> 
> 
> Gary McCartney
> 
> McCartney Electronics
> 7134 Fife Rd, RR 7
> Guelph Ontario Canada N1H 6J4
> Fax: (519)821-1530
> email: number63@xxxxxxxxxxxxx
> 
> 
> 
> 
> Edward Gaidies wrote:
>> 
>> Gary;
>> Just to mention, Cathray is having a moving sale, (on speakers).
>> If you are changing them as a set, Cathray has a good supply of speakers,
>> such  as Crown, etc. I believe that Acoustic Research is no longer in
>> business, and what I can remember, they were not a high end speaker, the
>> type that Hi-Fi aficionados would purchase.
>> I'm sure if they are replaced in pairs, they would do quite nicely.
>> 
>> -Ed-
>> 
>> teltek@xxxxxxxxxxxx
>> 
>>> 
>>> I have this pair of speakers come into the shop with foam surrounds
>>> desintegrated in all the woofers and midranges. They belong to a doctor
>>> who has given me the go ahead at $400.00 CDN
>>> guest-imate.
>>> I actually gave the price of $400.00 hoping to scare him off because I
>>> don't really feel like doing the job.(I'm not a speaker expert). Didn't
>>> expect him to say that he thought that was a fair price to repair and
>>> that the speakers are worth $1000.00 CDN.
>>> 
>>> Ok, so now the problem. Are original parts available for these, and what
>>> cost? If not available, what are replacement options in keeping these
>>> sounding like original?
>>> 
>>> The woofers are pn: 200035 (need 4 of them) and midranges are pn: 200036
>>> (need 2 of them)
>>> 
>>> All speakers are 8". The woofers measure 8.6 ohm on my meter, or 4.3 ohm
>>> -2 in parallel. The midrange measures 8.6 ohm. I measure 5.4 ohm across
>>> the input terminals of the complete encloser.
>>> 
>>> I have posted a web page to show the speakers and the cross over network
>>> schematic.
>>> 
>>> http://www.number63.ca/speakers/speakers.html
>>> 
>>> 
>>> Another option: installing new surrounds. I have attempted this one
>>> other time and it was a flop. The surround I got was just a generic so
>>> maybe that is why. I think I would want proper surrounds to fit these
>>> speakers if I attempt it again. Any pointers in doing this?
>>> Are the surrounds available?
>>> 
>>> 
>>> 
>>> 
>>> Thanks for any suggestions in how to go about repairing these the best
>>> way.
>> 
>> --
>> From: Ed Gaidies
>> teltek@xxxxxxxxxxx
>> Tel-Tek Electronics
>> 
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-=Ed=-

-- 
From: Ed Gaidies   
teltek@xxxxxxxxxxx
Tel-Tek Electronics

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