| Author |
Thread: Amp power question |
    
Bronze Member Username: Hqh17
US
Post Number: 16
Registered: Dec-07
|
| Posted on Sunday, October 05, 2008 - 08:31 pm: |
|
i have an amp with a total fuse rating of 80 amps. the total wattage rating is 1200 watts RMS (2x600). i bought a wiring kit that came with 10 gauge wire and a 30 amp fuse (cause it was cheap). having installed this i crank my subs up and the fuse does not blow (my entire electrical system is stock). do i need higher gauge wire? do i need a higher output alternator? do i need to upgrade my big 3? why is my amp not drawing at least 30 amps? |
|
|
Platinum Member Username: Wingmanalive
A pic is worth
1000 posts!!
Post Number: 18432
Registered: Jun-06
|
| Posted on Sunday, October 05, 2008 - 08:40 pm: |
|
I wouldn't use a 30amp fuse on 1200w. Chances are the amp isn't doing 1200w if it's not blowing the fuse. What amp are you using? Nor would I use 10ga power wire. Who paired the amp kit to your amp? |
Bronze Member Username: Hqh17
US
Post Number: 17
Registered: Dec-07
|
| Posted on Sunday, October 05, 2008 - 09:38 pm: |
|
my amp is a cadence txa6004. i just got that wiring kit cause it was like 7 bucks. im just confused as to why its not drawing enough current to blow the 30 amp fuse |
Platinum Member Username: Wingmanalive
A pic is worth
1000 posts!!
Post Number: 18436
Registered: Jun-06
|
| Posted on Sunday, October 05, 2008 - 10:23 pm: |
|
You were looking for an amp kit for 1200w and you spent $7???
Tell me where this deal is lol. |
Gold Member Username: Juliob
Santo Domingo
Dominican Re...
Post Number: 5512
Registered: Dec-05
|
| Posted on Tuesday, October 07, 2008 - 06:33 pm: |
|
hahaha X2.
Imo 4AWG is the right choice |
Bronze Member Username: Hqh17
US
Post Number: 18
Registered: Dec-07
|
| Posted on Sunday, October 26, 2008 - 08:16 pm: |
|
so does anyone have an answer? |
Gold Member Username: Nd4spd18
Philadelphia,
PA
Post Number: 8705
Registered: Jul-06
|
| Posted on Sunday, October 26, 2008 - 09:19 pm: |
|
Fuses do not blow instantly. It takes a bit of high volume playing to blow it.....
BTW it is physically impossible for that amp to do 1200w with an 80 amp fuse. If it was 100% effecient the most it could do is 1100w. And average efficencey is 75% so figure about 850w is what your actually getting. |
Gold Member Username: N2audio
Lawrence,
Ks
USA
Post Number: 1650
Registered: Mar-04
|
| Posted on Sunday, October 26, 2008 - 10:15 pm: |
|
You "crank your subs up"?
At what impedance?
Depending on the impedance your amp is driving it may be putting out a lot less than what it's capable of.
Plus, music does not draw high current constantly. It will draw low current most of the time with bursts up to ~80A. It's possible, even running at minimum impedance the 30A fuse up front could survive for a while. |
Bronze Member Username: Hqh17
US
Post Number: 19
Registered: Dec-07
|
| Posted on Wednesday, December 10, 2008 - 04:11 pm: |
|
each sub is a single 4 ohm voice coil
i have a 4 channel amp and i bridged 2 channels together for each sub. with this configuration, the rating is 2x600w RMS @ 4 ohms.
and the 30 amp fuse has been surviving for months. im just trying to figure out where the bottle neck is, or (the most probable answer) if i dont have enough power to begin with |
|
|
