setting gains for head unit (nec)

[jdmferio13 10+ year member]

is it necessary im only running a 2 volt preout hu.We got the volume to raise from 25 max to 30 max but had to fade the speakers to the rear -4.and then did the amp and hooked up everything and it got quiter for some reason.Is it necessary to do that with the head unit or no and why do i have to fade to the rear speakers and not be able to hear the front mids

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[thaster 10+ year member]

huh? better grammar please

 

[jdmferio13 10+ year member]

thanks for answering cause it obvious what i meant can i just set the gains on the amp with the o-scope and just go by ear with the headunit.I really need to get a 4 volt or higher preout hu

 

[91Chevy 10+ year member]

I'm sorry, but what exactly are you asking...?

 

[jdmferio13 10+ year member]

okay sorry hard to explain.basically do you guys set your headunits by ear or with o-scopes.we did mine its only 2volt preouts.but when we did it clipped so i had to fade the front mids and its not loud anymore if that helps sorry max volume is 30 btw.

 

[jdmferio13 10+ year member]

i also have stock interior speakers with a shitty sony headunit wondering if i upgrade the headunit is it gonna make a huge difference with the pre out voltage

 

[mr.michael 10+ year member]

here dood

 

[Sarthos 10+ year member]

1. What are you smoking?

2. Did you set the gains on the amp?

3. Is there any sound at all?

 

[Rich B 5,000+ posts]

If you have an O Scope thats the best way to find what volume your HU starts clipping at, but you can just guess around 3/4 on the volume knob if you dont.

 

[1hawaii50 10+ year member]

You need to find out at what volume your headunit clips first. Once you find that point, back it off just a bit, and then set your amp gains.