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Old 23rd June 2007, 02:12 AM   #21
anatech is offline anatech  Canada
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Hi Nelson,
Thank you. I haven't have the need to really get deep under the hood on these. My servicing has consisted of the bias circuit modification (to make it less aggressive) and that one staple victim. The staple didn't fair so well either.

-Chris
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Old 23rd June 2007, 07:05 AM   #22
Heiney9 is offline Heiney9  United States
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Quote:
Originally posted by anatech
Hi Brock,
You should be fine. The only issue is that the SDA's force heavier currents between the negative speaker terminals than was thought of when the amp in question was designed. A heavy wire link between the negative terminals is recommended (just like Adcom 555 type amps).

We were authorized warranty for both Polk, Adcom and many other amps. I still fail to see why Polk released these darn speakers on the market without very clear warnings. I can't tell you how many customers had to pay for repairs not covered under warranty due to these speakers.

-Chris
You and I have talked about this before . If people (at the time) would have read their owners manual they would know. Of course what common person walking into and audio shop would know what the term "common ground" means .

My GFA 545 has no trouble running these to pretty decent levels (more than my ears can handel). But from this point forward every amp I consider I need to make sure it will work properly with the SDA's.

Brock
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Old 23rd June 2007, 02:50 PM   #23
anatech is offline anatech  Canada
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Hi Brock,
Quote:
You and I have talked about this before
Yes, but I figure a warning should be given to others. You just provided an opportunity to repeat my warning.

There should have been a paper on top with a "Warning" on top with this advice. It's very common that customers do not read the owners manual.

-Chris
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