I'm servicing a MACKIE PPM 808M that channel 1 doesn't work but channel 2 is just fine. I've determined the input op amp (U3A - NJM4560M), is bad. This is the input op to the power amp board from the mixer board. Of course the part is obsolete. Anyone have any recommendation on which of the following similar parts I should use as a replacement?
NJM4565M
NJM4580M
TLC272BCPS
Also, how important would it be to replace the good NJM4560M input op amp on channel #2 with the same new op amp part number that I'm using in channel #1?
NJM4565M
NJM4580M
TLC272BCPS
Also, how important would it be to replace the good NJM4560M input op amp on channel #2 with the same new op amp part number that I'm using in channel #1?
4560 is/was made by others.
https://www.ti.com/product/RC4560
https://www.digikey.com/en/products...3364?msockid=3cf0311deaad6d7128d62445eb556ce1
An op-amp response is set by feedback and you are unlikely to tell any difference even if you used a different part. This uses a standard pin-out that many perhaps better op-amps also use.
https://www.ti.com/amplifier-circuit/op-amps/audio/products.html#480=2&261011=2.972025;9&
https://www.ti.com/product/RC4560
https://www.digikey.com/en/products...3364?msockid=3cf0311deaad6d7128d62445eb556ce1
An op-amp response is set by feedback and you are unlikely to tell any difference even if you used a different part. This uses a standard pin-out that many perhaps better op-amps also use.
https://www.ti.com/amplifier-circuit/op-amps/audio/products.html#480=2&261011=2.972025;9&
Last edited: