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#78210 - 07/28/08 01:13 AM 7700 Common Ground AMP
Scott R. Burns Offline
Deputy Gunslinger

Registered: 06/15/02
Posts: 9
Loc: London, Ontario, Canada
Need to know if this is a common ground AMP? If it is can I plug in Polk SDA SRSs without problem? If not can I bind together two negative posts on two of the seven channels to use the Polk's?

Thanks
Scott...
_________________________
Scott Burns
Scott.Burns@Netcontech.Com

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#78211 - 07/28/08 01:46 AM Re: 7700 Common Ground AMP
Altec Offline
Desperado

Registered: 01/06/08
Posts: 334
No, it is not a common ground amp. All the multichannel amps are essentially bridged amps for each channel, so the "ground" terminal is really the inverted polarity signal. This topology is very common these days because it allows a lower B+/- rail voltage which in turn means less heat dissipation at idle.

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#78212 - 07/30/08 03:02 AM Re: 7700 Common Ground AMP
Scott R. Burns Offline
Deputy Gunslinger

Registered: 06/15/02
Posts: 9
Loc: London, Ontario, Canada
Thanks Altec,


So does anyone know if it is possible to use 2 channels of this AMP with a speaker system that requires common ground between the channels?

Can I just bind together 2 ground posts for the channels I am using for these speakers?
_________________________
Scott Burns
Scott.Burns@Netcontech.Com

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#78213 - 07/30/08 03:56 AM Re: 7700 Common Ground AMP
Altec Offline
Desperado

Registered: 01/06/08
Posts: 334
Geez, why do I even bother...... confused

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#78214 - 07/30/08 03:35 PM Re: 7700 Common Ground AMP
rubbersoul Offline
Desperado

Registered: 02/27/06
Posts: 383
Loc: folsom, pa.
Great answer Altec!
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#78215 - 07/31/08 06:10 AM Re: 7700 Common Ground AMP
fm Offline
Gunslinger

Registered: 04/25/06
Posts: 44
Loc: CA
I believe you will need to use a 7200. The 7700/7500 are "hot" on all terminals so connecting them would likely result in a amp protect shutdown.

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