Just wondering the absolute best way to go about setting gains on my old school amps when using newer headunits.
My old PPI amps have a max input voltage rating of 2.0V but, my headunit is capable of much more voltage output (4.0V+ in fact).
To ensure I don't overdrive the input signal (and possibly damage the amp) should I measure at what volume level my RCA outputs from the deck reach 2.0V max. Then, set amp gains to match?
Or, should I just be watching for when the headunit output reaches distortion and set my amp gains accordingly?
Definitely don't want to damage the amp. Thanks all!