symetrix 528E mods

[mrphotodude]

I recently got a 528E Rev D for free, had to replace the power transformer and its good to go.
This revision has the BA4560 opamps save for a few 5532's. Anyone have a schematic for this revision or advice on modding it?

 

[topcat]

Just posted the schematic in the techdocs section
Looks like a different revision as the opamps are 5532s and NJM2068s
Is the mic amp the same?
Enjoy

Tim

 

[mrphotodude]

Thanks, that looks pretty close to my unit. I have a rev D so no njm2068's, it has the ba4560's instead.
Are the 4560's a type of opamp that are there for cutting costs or efficient in a proper design? I have some very good opamps laying around and can socket a few positions.... then again, sometimes changing out opamps becomes alot of hassle for no improvement(or becomes degradation).