bridging subs
04-21-2005, 05:43 AM
#1
Junior Member
Thread Starter
Join Date: Dec 2004
Posts: 32
Likes: 0
Received 0 Likes
on
0 Posts
bridging amp and 8ohm subs
i have a 300/2 jl audio amp and i was thinking about getting two 12w1 8 ohm subs. my question was is, is it better to go with the 8 ohm and bridge them than to go with the 4ohm? i was talking to the guy at the audio store and he told me that i should get the 8 ohm and them bridge them at 4 ohm and that i would get more power going to them. if u could help me out i would appreciate it. thanks.
Last edited by jr22; 04-22-2005 at 06:45 AM. Reason: wrong term
04-21-2005, 07:51 AM
#2
Join Date: Jun 2001
Location: oakland, ca
Posts: 58,578
Likes: 0
Received 0 Likes
on
0 Posts
You dont "bridge" subs, you bridge amps. Bridging means to put 2 channels together to make 1 channel by using the + from CH1 and the - from CH2.
With the 300/2 bridge, it will make 300 watts at a 3-8OHM load. If you buy 2 8OHM speakers, and wire them in parallel, that will net you a 4OHM load.
With the 300/2 bridge, it will make 300 watts at a 3-8OHM load. If you buy 2 8OHM speakers, and wire them in parallel, that will net you a 4OHM load.
04-21-2005, 08:07 AM
#3
Diamond Audio turns me on
Join Date: Feb 2003
Location: Los Angeles
Posts: 215
Likes: 0
Received 0 Likes
on
0 Posts
You could get a total output of 300W from that amp regardless of whether you get the 4ohm or 8ohm subs. If you get 4ohm subs, you could wire them in stereo and get 150W to each sub. If you get 8ohm subs, you can bridge the amp to split 300W between the two. There should be no difference in power output, so I don't understand why he'd say you would get more power one way or another.
Personally, I'd rather get the 4ohm subs than the 8ohm - it'll be more convenient if you ever change that amp.
Personally, I'd rather get the 4ohm subs than the 8ohm - it'll be more convenient if you ever change that amp.
04-21-2005, 07:06 PM
#4
Join Date: Jun 2001
Location: oakland, ca
Posts: 58,578
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Arfboy
You could get a total output of 300W from that amp regardless of whether you get the 4ohm or 8ohm subs. If you get 4ohm subs, you could wire them in stereo and get 150W to each sub. If you get 8ohm subs, you can bridge the amp to split 300W between the two. There should be no difference in power output, so I don't understand why he'd say you would get more power one way or another.
Personally, I'd rather get the 4ohm subs than the 8ohm - it'll be more convenient if you ever change that amp.
Personally, I'd rather get the 4ohm subs than the 8ohm - it'll be more convenient if you ever change that amp.
If I were you. I would think again about the 8 OHM W1s. How about find a DVC woofer so that you dont have to get such a weird impedance...that will open up your options a little more if anything changes in your setup.