I have a JBL GTO 1201.1 and a 15" RE SX with Dual 2 ohm voice coils.
[i have a install thread somewhere]
To my knowledge, the amp is not 1 ohm stable...right? So I am currently running the setup at a 4 ohm load. The speaker is not as loud as it should be. So i tried something different [not permanent]. I ran the positive & negative wires straight to the amp from the sub. I dont know wat that ohm load equals out to, but it was much louder. However, i re-wired it to 4 ohms, because i didn't want to mess anything up. Is it alright to do it like I had it? Should I find a more powerful/1 ohm stable amp? Help please, thanks

 

If you hooked it up positive to positive and the same for negitive, then you ran it into 1 ohm. That amp is not 1 ohm stable. You have to run it at 4 ohm.

 

Unless you buy another sub , then you can run it at a 2 Ohm load .

 

no i dont have it ran 1 ohm. I am runnin it @ 4 ohm. But its not as loud as it should be... heres how its ran:

4 ohm right? (yes my mono amp has 4 connections)

and here's how i wired it earlier when i was jus messin around & it was much louder:


of course red is + and black is - . those lines indicate my speakerwire. my exceptional paint skills

 

but that defeats the whole purpose of runnin this system....i wanna run this sub. unless i can find a dual 4 ohm SX then i can run it @ a 2 ohm load.....

 

that amp you have is capable of 2 ohms which will work with that sub and give it more power which will achieve what you want.....louder

 

how do i wire a dual 2 ohm sub for 2 ohms? diagram please?

 

didnt see it said dual voice coil....honestly i dunno how to wire a 2 ohm dvc sub to 2 ohms on that amp...hmmmm maybe someone else

 

yep. dont think its possible.....

 

The reason it was much louder , is because you were running that amp at a 1 Ohm load , verses how you have it now at 4 Ohm . The amp will put out alot more power at a 1-2 ohm load than it will at a 4 Ohm load . However it will only play high volumes for a short period of time at 1 Ohm , before it shuts down . You cannot run that one sub at 2 Ohm . Thats why I suggested finding another 2 Ohm DVC sub (just like the one you have) so you would have 2 . Wire the coils in series and then the subs in parallel , for a 2 Ohm load .

 

oooo. that helped a lot, thanks. but i cant afford another one of those & so if i get a 4 ohm DVC that can be ran @ 2 ohms right? idk, gotta figure sumthin out.

 

Correct , you would wire it in parallel like this .

 

so US Amps and RE Audio are a joint company. How do you guys think at US AMPS XT 2000D will work with it? http://cgi.ebay.com/NEW-US-AMPS-2000...QQcmdZViewItem
i can buy it tonite if i hear enuff good feedback thanks

 

actually i bought the 4000D


EDIT: that being said, does anybody wanna buy my JBL GTO 1201.1??