you can also just hardwire the diodes to the PSU board and use the bottom has heatsink(mounting them under the board) . but then you are again stuck on single rectifier(chipamp's boards). there is lots of ways to do it
you can also just hardwire the diodes to the PSU board and use the bottom has heatsink(mounting them under the board) . but then you are again stuck on single rectifier(chipamp's boards). there is lots of ways to do it
Again, if single rectifiers are used, I would just do it like 6L6 did with the heatsinks, rather than twist it so that the very hot diodes were under the board....oh well, to each their own. I went the full dual mono route, built it for a fraction of the retail unit...nice thing about DIY, you can spend a couple extra bucks and gain a lot, even though it might be cost prohibitive to do it in a business where many unit are produced.
Russellc
you was refering to chipamp amps. so i started wonderingyes. dual rectifiers is the best way to go.Thanks for keeping that in mind, guys
So You say, that I should buy 4 bridges?
Wich one would be the best for that job?
regarding what knd, there can be a one year discusion
for a class A amp, i like the classic bridge. the super fast soft recovery diodes dont make theyr wow factor in class A amps.
some svear to them. but with more or less constant current draw, the standar brigde will do the job. it works for nelson too
Nice. What type rectifiers did you use? I've got another F-5 I'm building, no limiting circuitry and higher gain, and have a growing pile of parts for a turbo version. I'm convinced there are differences in rectifiers sound and am always interested to know what others are using, and wouldnt mind experimenting. I've seen some FRED bridges, (one piece, I think Vishay makes that sure look easy to use!
I took Peter Daniels recommendation at the time to use the IRF mosfets as well as the MUR diodes. I'm sure other high quality rectifiers sound good too,
Its just that my only F-5 build used them, so that's what Im familiar with.
Russellc
With a dual bridge there is less stress on the transformer if (and only when) the rails sag independently from each other. With a single bridge, the transformer secondaries take the asymmetrical load, and can hum a bit.
This is not that big of a deal in a Class-A amp, and the Pass Aleph amps were made with single bridges.
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