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Trevor Wilson[_3_] Trevor Wilson[_3_] is offline
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Default High End Class D

On 20/07/2020 8:59 pm, Peter Wieck wrote:
John:

Serviceable - that is a heavily loaded question. Effectively, these modules are not serviceable in any conventional definition of the term. They are uncomplicated devices that if used within their design parameters should outlast all of us, and possibly our children's children. The best analogy I can think of without much thought is that a Class D module is very much like a well-made Klein or Estwing hammer. Unless you abuse it, it will last forever. It will also tolerate a limited amount of abuse, but not infinite abuse.

https://www.amazon.com/Electricians-.../dp/B0002RI8VO

Buy a quality device in the first place. Build it well. Keep good clearances. Make sure the power-supply is capable. And keep it cool.


**All good advice. However, I would add a couple of riders:

* Most Class D amps, IME, fail more frequently that well built
pin-thru-hole products. That said, they are reasonably reliable. I have
4 subwoofers (different models), manufactured by a very highly regarded
US manufacturer in the workshop right now. All have faulty Class D
modules. None are worth repairing. I have a portable PA system with a
Class D amp. Repair is marginal and the client is still considering his
position.
* By the time a Class D amp does fail (say: 5 ~ 7 years), it won't be
worth repairing, as technology will have moved on.



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Trevor Wilson
www.rageaudio.com.au

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