Speaker outs explanation.

[moody]

I have a small mono pa head that I have used on and of for practice and stuff (not really big enough for full PA work). The outputs are hi fi style screw terminals.

 

I am not sure what all of the terminals do however - they are labeled as follows

 

8ohm (points to 2 terminals - the ones I use)

com

70

100

 

There are also a few unlabeled terminals in the same strip which I assume are unused.

[moody]

Wow, almost a year with no replies....

 

(Sorry, going through old posts).

[RickJ]

I'll wager that one of the 8-ohm terminals is jumpered to the "com" (common) terminal.

 

70 and com will push a 70-volt distributed system. Each speaker on such a system requires a 70-volt transformer.

 

100 and com is the same as above, b/w 100-volt transformers.

 

The benefit of distributed systems is you can use a lot of speakers without worrying about impedance issues. Many of the multiple ceiling-speaker systems you see installed in restaurants and banquet halls are 70- or 100-volt.

[tlbonehead]

Originally posted by moody I have a small mono pa head that I have used on and of for practice and stuff (not really big enough for full PA work). The outputs are hi fi style screw terminals. I am not sure what all of the terminals do however - they are labeled as follows 8ohm (points to 2 terminals - the ones I use) com 70 100 There are also a few unlabeled terminals in the same strip which I assume are unused.

Isn't common the ground,or negative and then the two that are marked 8 ohm,the positives?

[moody]

 

Originally posted by tlbonehead Isn't common the ground,or negative and then the two that are marked 8 ohm,the positives?

 

 

Maybe it's supposed to... but I screw speaker lead to the two 8ohm terminals and get sound.....