Amp/Sub question

[Djltoronto 10+ year member]

Okay, so really you don't need to measure any value from the RCA's for this proceedure. Any recommendation on which test tone to use?

A tone that is well within the range of the speakers you are using...

50 or 60hz for a subwoofer is fine, but not very practical for setting mids/highs etc...

As for the level, be it 0db or -3 or -6 or -5.5 or whatever, that's entirely up to you. the more - you go, the more potential there is for clipping.

 

[daboyfrumdabx 10+ year member]

Okay, so really you don't need to measure any value from the RCA's for this proceedure. Any recommendation on which test tone to use?

Use #3(60hz in phase). It's be nice if you could find a -5dB or -3dB, but those are all 0dB and will work. 0dB gives you basically zero clipping so it's really best, but I guess you could say in most cases, it's too "conservative". The more negative you go, the higher the chance of clipping, but it's perfectly fine for most music and most people will take that risk and let their ears be the judge. If you choose a -6dB track, you'll be okay in most cases, but you have to be aware of what clipping is and sounds like and if your music sounds to be clipping, you know to set it lower than where you have it. With experience, you'll learn to trust your ear a lot. Using a DMM is nice, but it's not perfect. Oscilloscope would be much better, but not everyone has one available. I personally set gains by ear 99% of the time. When I first started doing so, I'd set it by ear and then double check my work with a DMM and I was just about in sync every time.

 

[bobmG8 10+ year member]

Use #3(60hz in phase). It's be nice if you could find a -5dB or -3dB, but those are all 0dB and will work. 0dB gives you basically zero clipping so it's really best, but I guess you could say in most cases, it's too "conservative". The more negative you go, the higher the chance of clipping, but it's perfectly fine for most music and most people will take that risk and let their ears be the judge. If you choose a -6dB track, you'll be okay in most cases, but you have to be aware of what clipping is and sounds like and if your music sounds to be clipping, you know to set it lower than where you have it. With experience, you'll learn to trust your ear a lot. Using a DMM is nice, but it's not perfect. Oscilloscope would be much better, but not everyone has one available. I personally set gains by ear 99% of the time. When I first started doing so, I'd set it by ear and then double check my work with a DMM and I was just about in sync every time.

Thanks, should I use #3(60hz in phase) for the door speakers and subwoofer both?

 

[daboyfrumdabx 10+ year member]

Thanks, should I use #3(60hz in phase) for the door speakers and subwoofer both?

My bad, I forgot you were amping more than just subs haha. Use #3(60hz in phase) for the sub and use #7(1000hz in phase) for your doors.