Need a question answered about setting the gain!

[Xtremebass5 10+ year member]

ok i got a kicker kx 2500.1 amp i did the math it says set the gain to 70.7 on dmm.. my question is i got a crapy 2v preout cd player so i run a pro line driver that makes a big difference.. so how do i go about doing this with the proline driver hooked up? thanks for the help tim!

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[maldecido33 10+ year member]

You don't need to worry about it.

Gain formula is V = sqrt(power * impedance).

So, lets say you're wanting 2500 watts of power @ 2 ohms. The math yields 70.7 volts, so you would just turn the gain dial (with your equalizer set to flat, all bass boost, subwoofer volumes, etc. set to 0) until you DMM reads 70.7 AC volts.

 

[Xtremebass5 10+ year member]

can i keep my proline driver how it is setup up! 3/4 up? i just wont have to turn my gain on the amp up as much right? thanks tim

 

[Canaan 10+ year member]

I'm not sure why so many people insist on setting gains w/ a DMM.

That is NOT a good way to set the gain!

Watch this:



Setting the gain w/ a DMM will pretty much guarantee clipping.

I set the gain on that PG just like all the 'how-to' guides tell you to w/ a DMM.

Sure the amp did not clip at 60hz, but at 30hz....BAD CLIPPING!

 

[Mesto 10+ year member]

Whats a PG?

and what guide?

 

[maldecido33 10+ year member]

can i keep my proline driver how it is setup up! 3/4 up? i just wont have to turn my gain on the amp up as much right? thanks tim

Sure thing; just leave it set where it's it.

I'm not sure why so many people insist on setting gains w/ a DMM.That is NOT a good way to set the gain!

Watch this:

If you set your gains with the correct tone, you won't have that problem.

 

[maldecido33 10+ year member]

Whats a PG?
and what guide?

PG stands for Phoenix Gold, a brand.

An there are several guides all over the internet.

 

[Xtremebass5 10+ year member]

what tone should i set it with.. i play songs around 32-42 hz

 

[Xtremebass5 10+ year member]

ttt

 

[thch 10+ year member]

i'm not putting much stock in that video. my guesses are either bass boost or SSF "Q-adjustments" were done to give gain to the 30hz note.

though i'm against using DMMs for _setting_ gains for other reasons.