Hooking up 2 amps to 2 subs

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BangBang

Silver - Posts: 287

Joined: October 25, 2003

Location: United States

Posted: November 07, 2003 at 12:40 AM / IP Logged

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

defective

Silver - Posts: 642

Joined: August 20, 2003

Location: Canada

Posted: November 15, 2003 at 10:34 AM / IP Logged

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.

BangBang

Silver - Posts: 287

Joined: October 25, 2003

Location: United States

Posted: December 02, 2003 at 12:58 AM / IP Logged

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.

BangBang

Silver - Posts: 287

Joined: October 25, 2003

Location: United States

Posted: December 02, 2003 at 12:59 AM / IP Logged

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.

Cybernerd

Member - Posts: 5

Joined: November 28, 2003

Location: United States

Posted: December 02, 2003 at 6:24 AM / IP Logged

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.

bassam_zaman

Member - Posts: 23

Joined: October 02, 2003

Posted: December 02, 2003 at 7:02 AM / IP Logged

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

defective

Silver - Posts: 642

Joined: August 20, 2003

Location: Canada

Posted: December 02, 2003 at 9:43 AM / IP Logged

ya, what he said.... the issue has been discussed to death on his thread....laugh. Bad ground, cables on same side, etc.

fuseblower

Silver - Posts: 403

Joined: June 25, 2003

Location: United States

Posted: December 02, 2003 at 10:36 AM / IP Logged

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.

Stevolon

Member - Posts: 28

Joined: November 21, 2003

Location: Canada

Posted: December 02, 2003 at 10:58 AM / IP Logged

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.

Steve@A.E.S

BangBang

Silver - Posts: 287

Joined: October 25, 2003

Location: United States

Posted: December 02, 2003 at 2:45 PM / IP Logged

Cybernerd wrote:

wats rca cables?

but yeah

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