Help with Allen & heath quasi (70s discrete mixer) recap and mods

[Whoops]

Also, looking for some modern replacement transistor for C732 GR

Transistor equivalent website tell that you can replace the 2SC732 for any of this:

BC550
2SC2240
2SC2459
2SC2674
2SC2675
2SC2675

The BC550 is an easy to find transistor, and if you can use the BC550 then you can also use the BC549, both are Low noise transistors.
You can also use the MPSA18 but be careful that the pinout/legs will be reversed when compared to the BC550 so probably reversed also with the 2C732, check it out to confirm that, it's no big deal you just have to install it rotated 180 degrees.

You can use this website for transistors cross-reference, it's pretty useful:
https://english.electronica-pt.com/components-cross-reference?ref=2sC732

 

[musika]

Thanks for that Whoops... I did search for substitutes, but I guess I got frustrated since I did not know what website to trust. I usually will save the data sheet to make sure transistor pins are matching the one I am replacing.

 

[Ritchie Paris]

Hi all,

Does anyone can tell me what's the Rail voltage ? I am not sure ! 24VDC ?

Thanks by advance