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Which is better

 

Bronze Member
Username: Alex711

Post Number: 19
Registered: Oct-04
Is it better to play subs on 4 or 2 ohms..i have 2 12" rockford fosgate He2's
 

Bronze Member
Username: Mike_anthes

Canton, SD USA

Post Number: 51
Registered: Aug-04
well the lower the ohms the less resistance...so it would be more efficient...but 1000w rms @2 ohms is the same as 1000w rms @4ohms. its just the resistance of the speaker. 2 ohms puts less strain on your battery and alternator. don't quote me on this but 4 ohms might have better sq than 2 ohms...
 

Gold Member
Username: Jonathan_f

GA USA

Post Number: 2296
Registered: May-04
2 ohms puts more strain on your battery than 4 ohms, given the same amp, given two different amps, one that does 1000W at 2 ohms, and the other doing it at 4 ohms, the 2 ohm will draw less current. 4 ohms does have better SQ, more headroom, more damping, you're straining the power supply less.
 

Bronze Member
Username: Alex711

Post Number: 20
Registered: Oct-04
ight well i have the them wired for 4 ohms and hooked up to one of my rockford fosgate P8002.it sounds good i was just wonderin..thanks guys
 

Gold Member
Username: Jonathan_f

GA USA

Post Number: 2300
Registered: May-04
You can hook up to 2 ohms if you want (or if possible) but if you can wire the subs for a 4 ohm bridge, it would be better than a 2 ohm load on each channel because the signal would be in mono. Really, the amp shouldn't pull a whole lot more current when running a 2 ohm load, but with inefficiency and heat, it can tend to do so a tad more.
 

Gold Member
Username: Glasswolf

NorthWest, Michigan USA

Post Number: 4595
Registered: Dec-03
my personal view?
if you can afford it, give the subs full power from an amp running a 4 ohm load.
a 4 ohm load will yield less heat and distortion, better SNR, and damping than an amp at 2 ohms.
The drawback is that you'll pay a lot more for an amp that puts out 500 watts at 4 ohms versus 500 watts at 2 ohms.

The reason people run amplifiers at 2 ohms is to squeeze more power out of them. It's a 'cheaper' way to get more power, at the price of sound quality.
 

Bronze Member
Username: Alex711

Post Number: 22
Registered: Oct-04
o money's not a thing plus i already have 2 rockford fosgate's that push 800 watts at 4 ohms each.
preciate all the help guys
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