Markbass tweeter

[Larz13]

I'm in the process of replacing the piezo in my CMD 102P. Received the new one but it's not marked negative and positive. May be a dumb question but, does it really matter with a piezo?

 

[ardgedee]

If it's out of phase with the other speakers there will be a scoop in the frequencies where they overlap.

 

[SJan3]

I'm in the process of replacing the piezo in my CMD 102P. Received the new one but it's not marked negative and positive. May be a dumb question but, does it really matter with a piezo?

Do you have a pic of the tweeter or model #?

 

[Hoochie Coochie Man]

At high frequencies it may be difficult to discern by ear the effect of an out of phase piezo transducer such that it does not make a difference. That may be why there is no polarity marking.

 

[Redbrangus]

I'm in agreement with @Hoochie Coochie Man -- at those frequencies, it won't make much difference which way you hook it up. That said, was the tweeter you removed marked for polarity? The replacement unit is likely to have the same physical positions for the '+' and '-' as the old one. But again, it won't really matter much, if any.

 

[Larz13]

Do you have a pic of the tweeter or model #?

When l pulled the old one out it was marked. I installed the new with the the terminals in the same position as it's angled and only points one direction.
Thanks

 

[Larz13]

I'm in agreement with @Hoochie Coochie Man -- at those frequencies, it won't make much difference which way you hook it up. That said, was the tweeter you removed marked for polarity? The replacement unit is likely to have the same physical positions for the '+' and '-' as the old one. But again, it won't really matter much, if any.

Thats exactly what l did. Pulled the old, it was marked and installed the new in the same position as the old is on an angle and the terminals point to the right on a 45° angle.
Sounds ok to me. Lol
Thanks for the response. ️️

 

[Larz13]

At high frequencies it may be difficult to discern by ear the effect of an out of phase piezo transducer such that it does not make a difference. That may be why there is no polarity marking.

I just installed it in the same direction, 45° angle terminals pointing right, old one was marked.
Thanks for the response and info.

 

[Larz13]

Do you have a pic of the tweeter or model #?

I don't , Markbass sent it to me. The old one was marked and installed it in the same position as the old.
Thanks

 

[SJan3]

I don't , Markbass sent it to me. The old one was marked and installed it in the same position as the old.
Thanks

Working ok?

 

[agedhorse]

Not going to matter one bit at the frequencies being covered by the Piezo.

 

[Larz13]

Working ok?

Seems to be, guess we'll find out soon enough. Last gig the old one was rattling like hell so on break l went in and disconnected it ... amp still sounded great...

 

[Larz13]

Working ok?

Thanks

 

[mikecd1]

Markbass used the LeSon tweeters (TLX1?) the same as what was in the old SWR. Usually had a little bit of nail polish or paint on the + side, but if @agedhorse says it doesn't matter wouldn't worry bout it.

 

[Larz13]

Markbass used the LeSon tweeters (TLX1?) the same as what was in the old SWR. Usually had a little bit of nail polish or paint on the + side, but if @agedhorse says it doesn't matter wouldn't worry bout it.
View attachment 7445614

Yeah l installed it in the same position as the old, which was marked, as there were no markings on the new.
Thanks