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In Reply to: RE: Sorry posted by Awe-d-o-file on March 26, 2016 at 15:46:48
Doesn't Spectral offer a bridged amp design or two? I assume Spectral had a good reason to do this. The pair I got to spend some time with were pretty darn good and definitely intended for home use.
Follow Ups:
So long as you don't need to drive low impedance loads bridging works fine and does provide the benefits of using mono amplifiers per channel.
Given that the OP wants to do so "just because", I'm not convinced of the benefits using any one of the three listed which are not remotely in the Spectral class.
...with reliability as the major consideration, not whether he should or should not do so. And yet all he's recd so far is the third degee on his app, comments regarding potential sonic implications and criticism of his reason for doing so (I want to is as good as any).I can't offer specific advice because I have no experience with any of his amps. But bridging is a valid means of obtaining increased power and has been very seccessfully employed in commercial designs.
Unfortunately from the OP's perspective, this thread has gone off the tracks.
Edits: 03/27/16
Yes increased power for a mono load only with restricted impedance demands.
As a dealer so often the person that wanted to do this did not have the scenario to properly benefit from it. There are scenarios that benefit from bridging, some that don't and some that for impedance reasons are a no go.
The OP mentioned three possible amps but not the load(S) so one might assume mono but without all the data....
ET
If the question is solely about long term serviceability, perhaps the most practical answer is the Hafler with its simpler and modular board construction. As a kit product, manuals with complete parts lists are easy to find like here.
Also, I think Frank Van Alstine might offer one of his mods using the chassis and power supply of that unit if should ever want to upgrade.
n/t
OK first we don't know his intended use and load impedance of it. If bridging gives double the power that's a whopping plus 3 dB. Third when bridging you take the stereo minimum load impedance and double it. So if he has an amp that has a minimum load of four ohms in stereo that means eight bridged so if he has say a four ohm sub or dual VC eight ohm sub no go. But we dont know because he didnt say. 3db big deal. I assume a sub since he's inquiring about running one amp mono. Therefore my statement stands. I've sold plenty of both car and home audio bridgeable amps as a dealer. People delude themselves when they see a number twice as large.......which means 3db but often less stability too. Almost never is not never.
ET
Edits: 03/26/16 03/26/16
Bridging doubles the voltage which gets us 6dB more, and that is quite a lot.
-reub
Dark energy? Ridiculous!
We live in an electric universe.
The NAD 2200 that he mentioned is 100 per channel or 200 Watts total. It can handle loads only as low as four ohms in stereo.
When bridged it is 400 Watts total or twice the 200 when stereo. That's a 3db difference in total power. It can also only drive a load as low as eight ohms when bridged. It will run hotter bridged.
We have no idea what the connection scenario is because the OP didn't say. A sub? Teo subs? Single or dual VC? Mono center channel?
ET
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