My Amp is hot to the touch?
10-24-08, 11:58 PM
#1
My Amp is hot to the touch?
I had some time to burn after parking my car today before I needed to attend to an event, I went to the trunk(to check my amp that's been sliding around) and sure enough the box that was infront of it had moved and the amp had slid slightly and I was jawdropped..My amp was hot to the touch..like sorta really hot...
I'm running 8Gauge Power Wire and a 6 Guage ground..........
* Rockford Fosgate Power P3002
* 75x2 RMS at 4 ohms
* 150x2 RMS at 2 ohms
* 300x1 RMS at 4 ohms
I bridged it
And I set my subwoofer in 2 Ohm mode
The subwoofer is
http://www.woofersetc.com/index.cfm?...roduct_ID=3037
I'm running 8Gauge Power Wire and a 6 Guage ground..........
* Rockford Fosgate Power P3002
* 75x2 RMS at 4 ohms
* 150x2 RMS at 2 ohms
* 300x1 RMS at 4 ohms
I bridged it
And I set my subwoofer in 2 Ohm mode
The subwoofer is
http://www.woofersetc.com/index.cfm?...roduct_ID=3037
10-25-08, 08:04 AM
#4
Banned
iTrader: (3)
Join Date: Sep 2008
Location: NA
Posts: 1,262
Likes: 0
Received 0 Likes
on
0 Posts
Uhm you left out a BIG part of the specs.
* 75 W x 2 @ 4 Ohms RMS
* 150 W x 2 @ 2 Ohms RMS
* 300 W x 1 @ 4 Ohms bridged RMS
If you bridged it and are running your woofer in 2 ohm mode. Then your overloading your amp. Which would explain why your amp feels unusually hot. Eventually it will fail.
Your amp is actually a pretty good brand but its being paired with very bad brand sub, Its a shame. Even if you ran 400 watts rms into that sub, it still wouldnt hit hard. You would be better of getting 2 mtx T4512-44. You would push more air with 2 subs, they are a better brand, so they will sound better. And then you will can wire them up for a 4 ohm load.
http://www.onlinecarstereo.com/CarAu...roductID=13311
* 75 W x 2 @ 4 Ohms RMS
* 150 W x 2 @ 2 Ohms RMS
* 300 W x 1 @ 4 Ohms bridged RMS
If you bridged it and are running your woofer in 2 ohm mode. Then your overloading your amp. Which would explain why your amp feels unusually hot. Eventually it will fail.
Your amp is actually a pretty good brand but its being paired with very bad brand sub, Its a shame. Even if you ran 400 watts rms into that sub, it still wouldnt hit hard. You would be better of getting 2 mtx T4512-44. You would push more air with 2 subs, they are a better brand, so they will sound better. And then you will can wire them up for a 4 ohm load.
http://www.onlinecarstereo.com/CarAu...roductID=13311
Last edited by Ryeno; 10-25-08 at 08:12 AM.
10-25-08, 11:11 AM
#5
Ah...didnt see that...
A 2x4ohm sub can only be wired either as 2 or 8ohms, and as has been stated here earlier, thats no good when your amp is bridged.
An RF Power amplifier can handle this...BUT...it is not recomended...
A 2x4ohm sub can only be wired either as 2 or 8ohms, and as has been stated here earlier, thats no good when your amp is bridged.
An RF Power amplifier can handle this...BUT...it is not recomended...
10-25-08, 03:08 PM
#7
Banned
iTrader: (3)
Join Date: Sep 2008
Location: NA
Posts: 1,262
Likes: 0
Received 0 Likes
on
0 Posts
I''ve never heard anything good about them. All i know is JL has the best subs. MTX is better then audiobahn but not JL good. Rockford fosgate is a really good brand for amps but i think their subs aren't great.
Last edited by Ryeno; 10-25-08 at 03:16 PM.
Trending Topics
10-27-08, 03:23 PM
#10
Lead Lap
iTrader: (1)
Join Date: Jan 2005
Location: California
Posts: 581
Likes: 0
Received 0 Likes
on
0 Posts
8g wires are fine for that watt range but I recommend running the same gauge for both the + and - while keeping the - as short as possible.
Like someone mentioned the amp is getting excessively hot because you are bridging it into a 2 load which your amp isn't designed for. I'm surprise the amp hasn't gone into protection or failed on you yet.
3 options for you:
1. Unbridge the amp and run it on 1 ch. You'll get less power but wont kill your amp.
2. Buy another of same sub. 2 4ohm DVC subs if wired correctly will give you 4ohm. Each sub will only get ~150w but again it wont burn out on you.
3. Buy a mono amp made specifically for subs. Most of these can go down to 1 or 2ohm loads. Or buy a different sub with a 4ohm rating (4ohm SVC or 2ohm DVC).
Like someone mentioned the amp is getting excessively hot because you are bridging it into a 2 load which your amp isn't designed for. I'm surprise the amp hasn't gone into protection or failed on you yet.
3 options for you:
1. Unbridge the amp and run it on 1 ch. You'll get less power but wont kill your amp.
2. Buy another of same sub. 2 4ohm DVC subs if wired correctly will give you 4ohm. Each sub will only get ~150w but again it wont burn out on you.
3. Buy a mono amp made specifically for subs. Most of these can go down to 1 or 2ohm loads. Or buy a different sub with a 4ohm rating (4ohm SVC or 2ohm DVC).
11-09-08, 07:32 PM
#15
The JL home versions (Fathom), at $3000+ each, are very impressive performers and are built with W7 technology:
http://www.avrev.com/home-theater-lo...subwoofer.html