Very Old PA Speaker cabs

[peritus]

So...

Awhile back I posted about a tubed Bell PA amp that I bought for 10 bucks...

It came with two open back speaker cabs, each having 1 x 12" speakers.. pictures forthcoming..

I'm curious to hear a guitar amp driving these cabs...

My question is how to determine the ohmage rating of each speaker, so I can choose a jack on the back of a guitar amp to plug it into...

I suppose this is a bad idea.. the cabs look sweet though.. Maybe I'll just buy some vintage 30's and slap in there..

Thanks

 

[Dani Pace]

The easiest way is to use an ohm meter. Check the resistance across the terminals of the speaker. Also you will want to use an amp with a similar output (watts) to the pa, you don't want to overload either the amp or the speakers.

 

[boingoman]

The resistance you see with a meter will be lower than the impedance. 4ohm speakers usually measure 3.2-3.6ohms, 8ohm speakers in the range of 5.5-6.2.