SDA SRS 2 with adcom gfa 7700 problem
joe619
Posts: 3
Hi guys, here is my situation. I just recently bought an SDA SRS 2, adcom gfa 7700 amplifier and onkyo p301 preamp. I properly connected all 3 of them and when i turned it on, i get a loud sound and it do the same thing when i turned it off. When i connect my other speakers klipsch klf 30, it works fine.
Then i used a vintage pioneer sx780 for the sda and it work fine.there was no lose wires or connection i even used a different rca and speaker cable but it still do the same thing. any suggestion on what was the problem.
Thanks,
Joe
Then i used a vintage pioneer sx780 for the sda and it work fine.there was no lose wires or connection i even used a different rca and speaker cable but it still do the same thing. any suggestion on what was the problem.
Thanks,
Joe
Post edited by joe619 on
Comments
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I believe that adcom is a NON common ground amp. SDA's REQUIRE a common ground amp or an AI-1 IC cable.“The two most important days in your life are the day you are born and the day you find out why.” ~ Mark Twain
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Try disconnecting the cable between the speakers, does it still happen? And welcome to the world of SRS-SDAs,SRS2s are great model to have!
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I just recently bought an SDA SRS 2, adcom gfa 7700 amplifier and onkyo p301 preamp. I properly connected all 3 of them
Only one speaker?
Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk -
gimpod: I believe that adcom is a NON common ground amp. SDA's REQUIRE a common ground amp or an AI-1 IC cable.
Where exactly can i buy this cable and can you provide a link. Thank you. -
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you can build a very good one--here
http://www.polkaudio.com/forums/showthread.php?t=74472&highlight=dreadnaughtJC approves....he told me so. (F-1 nut) -
Blade/Blade SRS 2? Yeah, you can MODIFY the speaker to accept an AI-1 cable, but it's an unsatisfactory solution because the sound quality is "off" somewhat.
Better to TL them (RDO-198 tweeter mod) and use with a common-ground amp.
PIN/Blade SRS 2? You're all set to add an AI-1 or equivalent (Dreadnaught). See multiple discussions on the impossibility (or not) of using the 198 tweeter. -
Waaaayyyyy simpler to get a different, common ground amp,BTW.
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A pair of SDA SRS 2 with interconnect cable
Yeah, I figured as much. I was sort of amusing myself, sorry.
If your serial numbers are 1945 or higher, you can use the AI-1. If not, you'll need to get a common ground amp.
Polk hasn't sold the AI-1 for many years, so short of finding one for sale, you'll have to build one.Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk -
Joe,
As I mentioned in my email to you earlier, your best bet is going to be to call Adcom, confirm you can strap two of the negative terminals on your amp with a piece of speaker wire and use those two channels. -
JohnLocke88 wrote: »Joe,
As I mentioned in my email to you earlier, your best bet is going to be to call Adcom, confirm you can strap two of the negative terminals on your amp with a piece of speaker wire and use those two channels.
Strapping has a less than desirable effect on the sonics.Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk
