412 Cab

[flarp9]

Can anyone identify the ohms of a 412 cabinet. It has the staggered 12 inch, Sunn Guitar Transducer Speakers.  The top two are wired in series, and the bottom ones are wired in series. Then, both sets seem to be wired in parrallel with each other. (might be series?).

Any help appreciated.

Thanks

Flarp9

[Don T.]

Hello;
 What you have there is what is called a series-parrallel circuit. If all speakers are the same impedance then the total cab impedance will be the same. ie:8ohm speakers net an 8ohm cabinet.
Don T.

[flarp9]

Thanks for your answer.  The problem is I don't know what the ohms of the speakers are.  I don't know if they are 4, 8 or 16.  I was taking a shot that someone would know how that cab came originally since all the speakers are original.

Thaks.

[Ryan Phelps]

Flarp9;
Don T. is correct; your total cabinet impedance is 8 ohms. I also have a 412 cab that is dated September 1968 with the staggered 12" speakers. The speakers are Jensen (EIA code 220) and are 8 ohms each. Your speakers should be 8 ohms each as well. You can check with an ohm meter.....un-wire one speaker and measure the resistance between the terminals. You should get a reading slightly less than 8 ohms.
Good Luck!
Ryan