There's a difference between a completed amp and a module, Positron. Just look at the diyaudio store and let me know which Pass amp boards have speaker protection?
Even without speaker protection, I have less comcern over this failing then an LM3886 failing. TDA7297 uses a single voltage rail and won't expose the speaker to DC should the power supply fail. This would not be the case with a bipolar design.
Even without speaker protection, I have less comcern over this failing then an LM3886 failing. TDA7297 uses a single voltage rail and won't expose the speaker to DC should the power supply fail. This would not be the case with a bipolar design.
That is absolutely a good point. The risk is lower. Still I and others have seen too many devices with on chip protection failing because the chip was failing. I see it in my daily job too.
Regardless of brand and type (or hype) I consider external protection a better choice but let’s not exxagerate. The design looks very Nice and I have become curious how it sounds. Does it sound better than LM3875 amps?
Regardless of brand and type (or hype) I consider external protection a better choice but let’s not exxagerate. The design looks very Nice and I have become curious how it sounds. Does it sound better than LM3875 amps?
That is absolutely a good point. The risk is lower. Still I and others have seen too many devices with on chip protection failing because the chip was failing. I see it in my daily job too.
Regardless of brand and type (or hype) I consider external protection a better choice but let’s not exxagerate. The design looks very Nice and I have become curious how it sounds. Does it sound better than LM3875 amps?
IMO yes, by a lot. I never could get the LM3875 to sound more than decent. It simply didn't have much texture, soundstage so-so, timbre eh, low level volume shifts nope... The 7297 is kinda of like a painter whom won't make the drywallers and framers look any better than they actually are. It's actually a very useful tool since at the very most it may make the higher frequencies slightly softer, and otherwise is always a reflection of everything else. The mod of cutting between binding posts to make a non-conductive path between them where chassis use to be is readily audible, for example.
Finished my Folsom DIY7297 amp. First try at a PS and no sparks or smoke! Worked great right out of the gate. Using it with a B1 and my newly built Manzanitas. Very nice sound. Thanks to Destroyer OS for the design, pcbs, and support.
Doug
Doug
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thanks for the nice words on my build. been playing some acoustic stuff that just sounds super clear and detailed, very sweet.
I figured someone would ask about the grounding, well... I used a piece of 1/2" phenolic as a base for the chassis as I didn't have any aluminum I could use so I was trying to tie all the boards and metal bits together. I was less scared of sound quality as I was of wiring up A.C. and wanted everything grounded. was kinda a pain and won't do it again!
I figured someone would ask about the grounding, well... I used a piece of 1/2" phenolic as a base for the chassis as I didn't have any aluminum I could use so I was trying to tie all the boards and metal bits together. I was less scared of sound quality as I was of wiring up A.C. and wanted everything grounded. was kinda a pain and won't do it again!
Yes I still have some.
Awesome, thanks Destroyer.
I would like one each PSU and amp boards, postage to New Zealand.
Like the look of the PSU boards, I built a couple of PSUs based on the circuit you shared with me a few years back, powering TPA3116 amps, one of which is still my favorite amp.
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