40hm sub on 2 ohm load

 

Bronze Member
Username: Doggydowg

Portsmouth

Post Number: 23
Registered: Dec-05
hiya guys
what happends if you run a 4 0hm sub off of a 2 ohm load?
thanks Paul.
 

Silver Member
Username: N2audio

Lawrence, Ks USA

Post Number: 241
Registered: Mar-04
the sub IS the load, if it's a 4 ohm sub it's always 4 ohms.

What amp?
 

Bronze Member
Username: Doggydowg

Portsmouth

Post Number: 24
Registered: Dec-05
its a rockford fosgate amp rf x7 and its a mono 1 channle amp, but when u bridge the amp it goes into 2 0hms, the amp makes 1580rms at 2 0hms and probably half that at 4 ohms. if that helps?
Thanks Paul.
 

Silver Member
Username: N2audio

Lawrence, Ks USA

Post Number: 257
Registered: Mar-04
I'm not sure what you mean by bridging. It's a single channel amp that cannot be bridged.

The amp produces 650w when connected to a 4 ohm load - and doubles its output power when connected to a 2 ohm load.

The only way you'd be able to get more power out of it is to add a 2nd 4 ohm sub to present a 2 ohm load to the amp for 1300w total, 650 to each sub, or buy a high power dual voice coil 4 ohm sub to replace your single voice coil 4 ohm sub.
 

Silver Member
Username: Tjmutlow

Post Number: 962
Registered: Sep-05
and has to be ran at right vokltage, prob 14.4 volts to see max power
 

Bronze Member
Username: Doggydowg

Portsmouth

Post Number: 25
Registered: Dec-05
now running two 4 ohms subs sounds good need a dvc sub realy but for now il have to put up with carrying 2 subs around in boot and having no room for shopping o well;-)
thanks.
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