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Old 24th May 2007, 07:11 PM   #1
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Default half-bridge VS. full-bridge

Full-bridge PROS:
1. Single supply
2. Reduction in harmonics (even or odd? I forget, but think it's odd order).

Full-bridge CONS:
1. Extra circuitry (and associated costs)
2. Double the magnetics (cost, plus real-estate).

At least that's the short list. But, what about audio quality? I'm interested in learing how these 2 topologies stack up against each other with regards to audio quality. Has anyone made measurements for both (distortion, frequency response, etc.)?

Any other thoughts or experiences on this?
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Old 25th May 2007, 05:27 PM   #2
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if you listen closey, you can hear crickets
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Old 25th May 2007, 08:23 PM   #3
Pano is offline Pano  United States
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Chirp, chirp.

Give it time to sink in, someone is sure to have an opinion. Here's mine:

It "seems" to me that the full bridge circuits sound better. Can't swear to it, but that's what I feel. Don't know why they would, though, unless it's a balanced signal thing.
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Old 25th May 2007, 08:49 PM   #4
BWRX is offline BWRX  United States
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Theoretically, they shouldn't sound any different. Practically, a half bridge amp is easier to build. If operating from the same supply voltages, a bridged amp would be able to provide twice the voltage swing across the load that a half bridge (single ended) amp would.
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