AI6YR Ben1d ago

Random electrical engineering question. I am looking at building an RIAA preamp (for a record turntable), and most of the circuits out there use a NE5532 dual low noise opamp.

However, I have a LOT OF 4741 opamps (a lot). Originally destined for the L1011 aircraft, lol.

My analog design skills having significantly atrophied since college (cough cough), what specifications on an opamp (aside from noise) are important for this stuff? I suspect I have to re-calculate gain and values for a different opamp? (also, bandwidth on the 4741 is 2.5Mhz... NE5532 is 12Mhz... so I assume they aren't going to be equivalent).

#electronics #opamp #amplifier

Show threadvandorb121d ago
@ai6yr posted this question to my dad. Electrical Engineer (retired). He did enough stuff with 70s stereo systems in his hobby days he might have something. Will update accordingly.
Show threadvandorb12

@ai6yr my old man surprised me when he said use chatGPT. The noun is getting close to being a verb...

The RIAA spec is extremely well documented, as well as the op-amp that's paired with it.

Then he pulled a move more becoming of him, there are open source circuit simulators, that likely have this same circuit as a template, that somebody can play in like Ng-spice. And breadboarding.

Sounds like he's filled up with projects at the moment 🤷

Jun 24 at 3:46amWeb
Show threadAI6YR Ben19h ago
@vandorb12 Aha, thanks....