# ohm question

Discussion in 'Amps and Cabs [BG]' started by sixstringbass, Dec 23, 2005.

1. ### sixstringbass

Sep 5, 2004
Clarksville, AR
sorry if this has already been asked but I have a bass cab gk backline 4x10 8 ohm at 400 watts I have a peavey bass head from the 70s 130 watts at 4 0hms so what am i running my cab on if it is 130 at 4 ohms on a 400 watt 8 ohm cab? im new to this stuff and wanted to know if this made a difference in the output of the cab or from the head. thanks

2. ### nashvillebill

Your cab presents an 8 ohm load to the amplifier. The cabinet can handle 400 watts of power, if it were hooked up to an amp that could deliver 400 watts of power into an 8 ohm load.

If your amp can produce 130 watts into a 4 ohm load, and I assume this is a transistor (solid-state, not tube) amp, it will probably produce about 80 to 90 watts into an 8 ohm load. So your rig is putting out 80 to 90 watts.

Look at the sticky at the top of these threads, under the FAQ there is a section on "ohms". This will help explain what an ohm is (a unit of electrical resistance) and how it relates to amps and power output.

3. ### sixstringbass

Sep 5, 2004
Clarksville, AR
thanks a lot Ill look at the faq

4. ### HMZSupporting Member

Dec 21, 2003
USA-Mineola
If I run 3 eight ohm cabs in parallel what is my final ohm load?

5. ### Maverick BluesBeing a Thumper is all about ATTITUDE!

Apr 28, 2005
Richmond, VA
1/(1/8 + 1/8 + 1/8)=2.666... ohms.

'rick

6. ### petchSupporting Member

Mar 25, 2001
Medina, Ohio
Ohms should have a number in front of it; otherwise the word is impedance.

7. ### HMZSupporting Member

Dec 21, 2003
USA-Mineola
Thanks for the help guys.