I recently purchased an old school Adcom 5450 4 channel car audio amplifier. After a close inspecting of all the internals, I found that 3 of the 4 channels have non-matching IRF610 installed.
I’m aware of the high importance of using transistors/FETs from the same batch in class D amplifiers, does this not negatively effect A/B class amps?
If these transistors should be matched or from the same manufactured batch, would an IRF640 be a compatible substitute for the IRF610? Would the IRF9640 be an acceptable replacement for the IRF9610’s also found mismatched inside this amp.
Thanks for any assistance that can be provided
I’m aware of the high importance of using transistors/FETs from the same batch in class D amplifiers, does this not negatively effect A/B class amps?
If these transistors should be matched or from the same manufactured batch, would an IRF640 be a compatible substitute for the IRF610? Would the IRF9640 be an acceptable replacement for the IRF9610’s also found mismatched inside this amp.
Thanks for any assistance that can be provided
Thank you Perry
I finally purchased your tutorial several months ago and I wanted to verify that it was the most recent “version” or can you tell me the last time you updated the information? I assume there is a way to verify what “version” I currenty have?
Your tutorial has expanded my knowledge far beyond what I expected and although I had to read and re-read everything to process the valuable information, I’m finally ready to purchase my first oscilloscope and confidentially take my amp repairs to a much higher level.
This may not be the appropriate thread to attach this message but...
I want other members to know what a great investment your tutorial is, and it doesn’t matter what level of experience you have. Members like myself, that had the prior ability to make basic car amplifier repairs, will also benefit from the valuable information you share.
I finally purchased your tutorial several months ago and I wanted to verify that it was the most recent “version” or can you tell me the last time you updated the information? I assume there is a way to verify what “version” I currenty have?
Your tutorial has expanded my knowledge far beyond what I expected and although I had to read and re-read everything to process the valuable information, I’m finally ready to purchase my first oscilloscope and confidentially take my amp repairs to a much higher level.
This may not be the appropriate thread to attach this message but...
I want other members to know what a great investment your tutorial is, and it doesn’t matter what level of experience you have. Members like myself, that had the prior ability to make basic car amplifier repairs, will also benefit from the valuable information you share.
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