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High Current Common Ground Amps

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Hmmmm; You don't like the suggestions you've had on your other thread here or the one you have in the polk forum:dunno:?
 
Hey your right! Why dont to contribute and maybe I wont have to keep searching! LOL We dont need anymore F1nuts on any board...
 
Be harder to list the not common ground stereo amps. Just pick one and if you don't know if it is common ground just ask.
 
I would look into a Carver M1.5T, should be able to drive SDA's easily
 
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My SDAs have 400 w/p/c @4 ohms available via Aragon 8008, prior to that, Aragon 4004. My Polks are modified; they were rated at 4 ohms when new, but they're less than that now.

Stable to one ohm (maybe less) and "about" $700--$1300 on the used market depending on exact model and condition.

You may need a short jumper wire between the negative terminals of the two channels to bypass a pair of internal resistors that prevent the amp from being true common-ground. I'm sure there's an expensive way to do it, but my jumper cost < $5. A few inches of speaker wire would work, I used 12-gauge and some Rat Shack banana terminations. There are many amplifiers like mine, that are "almost" common-ground, except that they tie each of the negative terminals to chassis ground through a resistor. The SDAs need to have those resistors bypassed with a jumper wire. I've seen evidence that some Adcom and Parasound amps are built that way; no doubt plenty of others are, too.

Remember that Bridged or Balanced amps cannot be made common-ground with the exception of some Crown "grounded-bridge" designs. Far as I know, the "grounded-bridge" is patented or trademarked by Crown.
 
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Hafler DH-500 or XL-600 would fit the requirement - both common ground in stock form. Keep your eyes out on CL for the P500 (professional version of the DH500).

They're big, heavy, well-fused, rack-mountable amps that sit at the bottom of the rack to keep it well-anchored. They'll run all day and night, too.

Cheers,

David
 
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