Help, Low ouput on my amp (26 volts)

[vanquish 0]

Well I got my saz1500 installed yesterday at a local shop. Today i decided that i was going to set the gains to 1200watts for my FI 15" BL. while using a DMM i am only able to get 26 volts out of my amp with volume 30/40.

0db tone CD

DMM

High to Low installed with my Stock stereo system

Sub: Fi 15 BL

Enclosure: 3.7ft^3 @ 32hz (ported)

Amp: Saz-1500

Other: 1/0 gauge - 250amp Fuse - Stock Battery

Any thoughts to whats wrong?

Edited March 27, 2008 by lost

[sundownz 197]

Are the RCA plugged into the right plugs ? Have recently had an instance where a shop plugged into the wrong ones...

What is the LPF set to?

Subsonic?

What kind of voltage is that stock HU putting out through the LOC? And does the LOC have adjustment?

[vanquish 0]

Are the RCA plugged into the right plugs ? Have recently had an instance where a shop plugged into the wrong ones...

What is the LPF set to?

Subsonic?

What kind of voltage is that stock HU putting out through the LOC? And does the LOC have adjustment?

On ca.com i think we figured out the problem its my stock h/u.

with the gains MAXED out:

volume 20/40 = 14.5 vlts

volume 30/40 = 26.4 vlts

All my settings are at zero. LPF/subsonic/bass boost

LOC? sorry im still learning

[ANeonRider 3]

LPF at zero?

LOC = Line out converter.

[vanquish 0]

LPF at zero?

LOC = Line out converter.

Yes, LPF is at zero. i read the definition of what it does but i still don't understand the purpose so i left it at zero.

Where should it be?

[Lord Baccus 1]

just a guess here but turn it to the 1/2 way point... if you hear voices back it off a lil

make sure the subsonic is all the way off...

[vanquish 0]

just a guess here but turn it to the 1/2 way point... if you hear voices back it off a lil

make sure the subsonic is all the way off...

Voices?

[tharookie 0]

yes voices.when u turn it half way up,play ur system and ull probably hear voices coming out of ur subs.back it down just a hair until u dont hear the voices out of ur subs.itll help u out alittle.you also might wanna think about upgrading ur battery up front to.i had problems keeping my voltage up with my 1500 until i got a yellow top up front.that help alot but i also added 2 more batterys in the back and a 200 amp altenator for my second 1500 im eventually gonna put in.that gave me no more worries about voltage for now.lol

[shizzzon 461]

haha, if he hears voices with his test tone cd he has... he's gettin some MAJOR noise issues.

IS the Sundown amp the only thing in line with that power wire?

I'm curious as to why you are using a 250A fuse for... That's WAY to high if that's the only amp and will not protect as much if that's true.

Also, don't turn your subsonic filter all the way down either and leave it there when you are ready to play music.

Turn your subsonic all the way counter clockwise(to the left) and the LPF as well.

Now for subsonic filter- turn it to the right 1\3 of the way. Turn it not quite directly in the middle but more than 1\4 of a turn.

LPF - turn it no higher than 1\4 of a turn to the right. Keep it right in the middle of all the way to the left and directly straight up.

This should set your subsonic in the high 20s and your LPF right around 100hz. Shouldnt need to be that high but just lettin you know.

Keep all bass boosts on stereo and amp at 0.

You shouldnt even be using a DMM to set your amp up anyway.

You can't "set gains" to any wattage since wattage output varies per frequency.

Trust me, if you think(which you aren't) you are at 1ohm trying to get 1200w, voltage would have to be 34.5v. If you rear 34.5v, that's not going to be 1200w. It'll be somewhere around 400w maybe if you're lucky.

If you do not have an o-scope, go back to the shop and see if they do and have them set it up for you. Too much guess work leads to problems, i've been there too many times in the past.

[sundownz 197]

Your problem is the LPF. You are filtering out the frequency you are testing voltage at.

As per Lord Baccus' suggestion set it about half way and try again.

[hunter86 1]

i wonder if a line driver will help any? box the preout voltage to something a tad higher. probably only seeing .25 volts if that