Hooking up 2 amps to 2 subs

Hi there

Right now i have (1) DHD 400 Watt 2 channel. 

In my Trunk i have (1) Dual 10" Bandpass Sub woofer box with (2) 10"  Sony Xplod Subs. 

THey are hooked up..

I just bought another DHD 400 Watt 2 channel amplifier.  I was thinking to power 1 sub to 1 amp. that way it'd be 400 watt amp pushing 1 sub.  is that possible? and wut kind of materials or wires do i need in order to do that? So i would have 1 amp on each sub.

also should i just leave it the way it is.. and use the other amp to power my interior speakers? such as my 6x9's ?

thnx plz reply. a.s.a.p

you can go both ways(no pun intended).  If your interiors sound fine do the sub. if your sub is fine do interiors.

as for the sub, just make sure you power them equally with the same power and frquency, or they will fight each other, they will HAVE to be mono or they will be moving at different times.   if possible use and oscilope to tune the frequencies perfectly or your have premature failure(no pun again). 

i use a triple split sealed system, one left, one right, one mono. all in split enclosure with separate amp for each.

I installed two 10 inch sony xplod subs about 1100 watt each

into a 400 DHD amp.  Everytime i roll down my windo it would make a Thud sound, wats worst 

is that wen i turn off the headunit it would make a loud sound.  this stuff is installed in my acura

legend 94.  whats going on? the head unit is still stock. never changed anything.  So wats

wrong? the wires?  some help plz

oh yeah thanx for helping with my neon light problems earlier. i found out y the fuse kept blowing. it seemd that the front neon light bulb cracked and had water in it. thats y everytime i turn it on , the fuse would blow thanx guys.

but yeah theres something going on with my system.

oh yeah i'm new to this stuff what do you guys mean wen u guys say something like this

"hook tha black wire to a good ground and hook the black wirte wiht a wite stripe to a switched postive"

wats ground? and i'm lost wen u guys chat in forums on installing stuff.. maybe im installing everything wrong on my car. like my neon lights.

HOLY CRAP! HEY BANGBANG, I HAVE THE SAME EXACT PROBLEM AS YOU DO!!! whenever i turn off the head unit it does the sam sh*t, its sooooooo loud it shakes the crap outof everythinng!!!

check out my post:

https://www.the12volt.com/installbay/forum_posts.asp?tid=22177&PN=1

It sounds like you are having a timing issue between your amplifier and radio.  One of them is cutting off before the other and thus causing the thumping sound.  This normally happens when your radio cuts off before your amplifier does.

Your system shouldn't not be affected by rolling down your window.  It sounds like you may have a lose wire in your door. 

Cybernerd wrote:

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Hi, did you run your rca cables along with your power cable for your amp? Seems to me that might be causing the problem. Im new to this forum and to car audio/video installs so someone correct me please if im wrong. Im here to learn and try to help out. But dont want to give bad advice.

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wats rca cables?

but yeah

Stevolon wrote:

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bangbang, i think some of the guys have got it. you have two seperate issues. You did not say how you are getting the signal into the amp?I am curiouse about that. But lets look at what is called turn on thump or turn off thump. The biggest cause of this is as fusebolwer said, timming of turn off. what is happening is your factory head unit is turning off before the amp . does it do this if you turn the car off without turning off the hu. it it does not then make sure you are using the factory switched power wire at the head unit and just dont turn off your radio. just use the ignition to turn evrything off.

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Hey thans for your advice it really help me understand the problem a little better.

I have two 10 inch sony xplod subs and i'm powering with a 400 watt DHD amp? is that enough juice?what else can i do to push the subs better, but not to blow it out.?  i really need some help plze i would like to know wut i can do and wut i need to buy thnx.

is this the actual amp you're talking about?

https://shop.store.yahoo.com/mobile-emotions/dhdpowcruisa3.html

and what's the model number on your subs?

i have 2 sony xplod about 10" and its using a 400 watt dhd amp to push it. does it drain my car battery alot?

i also installed neon lights does that use alot to?

cuz today  around 2:15 my car went dead my friends tried helping me jump start it but then it wouldn't start. so i had to tow truck it to mah house for $42 .. WTF!!! then he tried jump starting it again. and it worked.. wtf is going on... WTF!!! plz help... is my car battery about to die? wut can i do to help it not lose power ?  thnx alot really love this website forum

Someone let me know but could it be that he connected his remote wire to a constant 12v and his amp is staying on the whole time and thats why when he turns the radio off it makes the thudd and also thats mabe why his car battery drained cuz its being left on the whole time? Also mabe ran the rca and power togheter? Could this be a possibility?

bangbang, the problem is that when you turn off the factory radio the accesory power is still live and hence keeps the amplifier on until you turn off the car. There is no way to make it work the way you want it to. There is no out put on the factory deck that turns off when you turn the radio off. any aftermarket hu would cure the problem and would realy improve your overall sound.It can only sound as good as what you start with....

Just to answer Cybernerd, it is not likely that proximity of power wire to rca could ever cause this problem. as well if bangbang was using constant power on his triger line it would also make the popping noise when he shut of the car with the key.