Hello, newby question for everyone. WHat would be an upgrade in quality from a " JRC 4558dy" op amp
I know very little about what I am looking for in compatibility between op-amps.
the reason I ask is I have a old Yamaha MR1642 that needs work, I want to try to upgrade a few things on it to help my DIY skills, before I tackle something that I would care if I destroyed.
anyone know where I can get schematics for such a board?
I know very little about what I am looking for in compatibility between op-amps.
the reason I ask is I have a old Yamaha MR1642 that needs work, I want to try to upgrade a few things on it to help my DIY skills, before I tackle something that I would care if I destroyed.
anyone know where I can get schematics for such a board?
The 4558 is like a dual 741 type OpAmp. You can do much better, but I would not go overboard on something like this. Fit TL072 OpAmps, and see what you think. Use solderbraid to remove the old ones.
Regards Karl
Regards Karl
Thanks ALOT!!! 🙂
can you upgrade transistors aswell? they have some "A970 BLo" Transistors in them.
also I have come to the understanding that the power supply has a lot to do with the performance of the components, how true is that and what would be a good power supply and power transformer to use to power the modules . How does powering multiple modules affect the power supply? I want to power 4 - 8 modules with one power supply.
I have seen these power supplies on Five fish studios called PSU-2448 how well would this work?
can you upgrade transistors aswell? they have some "A970 BLo" Transistors in them.
also I have come to the understanding that the power supply has a lot to do with the performance of the components, how true is that and what would be a good power supply and power transformer to use to power the modules . How does powering multiple modules affect the power supply? I want to power 4 - 8 modules with one power supply.
I have seen these power supplies on Five fish studios called PSU-2448 how well would this work?
Upgrading transistors isnt recommended as the specifics of the parts used will be relied upon. A970 will be 2SA970, which is a pretty good small signal transistor (you might find C2240 on there too).
Opamps - don't go overboard. Try either TL072 as suggested, or NE5532. Anything more pricey isn't warranted and might make the circuit unstable.
Opamps - don't go overboard. Try either TL072 as suggested, or NE5532. Anything more pricey isn't warranted and might make the circuit unstable.
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