Cant figure this out.

[05fronty 5,000+ posts]

op did you wire the subs?

 

[wenn_du_weinst 10+ year member]

op did you wire the subs?

I was just going to ask about being in phase.

 

[stay_high 10+ year member]

op did you wire the subs?

No. i bough them off craigslist already wired in the box. He told me they were "d4's wired parallel to 2 ohms" but i found out thats impossible so i posted pics of the wiring on here and people told me 1 ohm.

 

[Flipx99 5,000+ posts]

Try re-wiring them yourself according to a subwoofer wiring diagram.

 

[CAT MAN 5,000+ posts]

out of phase. you can bet on it

 

[stay_high 10+ year member]

out of phase. you can bet on it

How could i tell? They dont seem to be moving in and out at different times

 

[stay_high 10+ year member]

IDK you guys im starting to think im just expecting to much out of this amp.. I listened to em both today like one after the other and the mb quart is louder. Just slightly. Guess i just wanted more output thinking i was going from around 250rms to 1500rms

 

[CAT MAN 5,000+ posts]

IDK you guys im starting to think im just expecting to much out of this amp.. I listened to em both today like one after the other and the mb quart is louder. Just slightly. Guess i just wanted more output thinking i was going from around 250rms to 1500rms

you could have the coil config messed up because my 1500 rapes. rewire you stuff to 1 ohm and make sure all pos-neg wires are right.. then come back

 

[JimJ 5,000+ posts]

few problems... cant tell if the box you have is actually designed for the drivers... and that HU needs to go... very low pre-out voltage on sony's.
which sdc's are you running, 2.0's or 2.5's?

Of all the reasons I can think to get rid of a head unit, output voltage isn't even on the list...

 

[JimJ 5,000+ posts]

Guess i just wanted more output thinking i was going from around 250rms to 1500rms

By increasing power by a factor of six, you're actually still under the threshold for hearing a true doubling of volume to the ear.

This is why even with ultra-cheap 12VDC power, simply adding power is usually the most expensive way to go. This forum hasn't really changed for the most part, everybody is putting their efforts into the "big 3", battery banks, and high output alternators, and no thought to the enclosure beyond building a ported box @ 35Hz and throwing it in the trunk.

 

[stay_high 10+ year member]

By increasing power by a factor of six, you're actually still under the threshold for hearing a true doubling of volume to the ear.
This is why even with ultra-cheap 12VDC power, simply adding power is usually the most expensive way to go.

true. Dont get me wrong these subs POUND. think i get a little bit of door flex(just a little) and my sun blockers bounce but the other amp did the same **** there just not a audible differnce unless you listen to one after the other.