Event TR-6 Monitor Is Cooking Tweeters?!?!

Archived from groups: rec.audio.pro (More info?)

i have a pair of even tr6 monitors. i've been pleased with them. but
one of my monitors has started to fry tweeters. my tweeter burned out,
so i wrote event, and they sent me another one free of charge...which
was great. but the new one was only in there for a few seconds, and it
literally started smoking. so i metered the positive and negative wires
going into the tweeter, and noticed that there is 50 volts passing
through them. i checked my working monitor, and there was no electric
current at all passing through those wires. does anyone know what is
going on? can i fix this?

any help would be much appreciated.

Archived from groups: rec.audio.pro (More info?)

Scott Dorsey wrote:
> <jonathandowns@gmail.com> wrote:
> >i have a pair of even tr6 monitors. i've been pleased with them. but
> >one of my monitors has started to fry tweeters. my tweeter burned out,
> >so i wrote event, and they sent me another one free of charge...which
> >was great. but the new one was only in there for a few seconds, and it
> >literally started smoking. so i metered the positive and negative wires
> >going into the tweeter, and noticed that there is 50 volts passing
> >through them. i checked my working monitor, and there was no electric
> >current at all passing through those wires. does anyone know what is
> >going on? can i fix this?
>
> Is it DC or AC?
> Definitely it's something gone wrong with the amplifier stage. If it's
> DC, I'd look for a bad output transistor or a bad supply rail. If it's
> AC, it's time to start going through the circuit with a scope and seeing
> what is oscillating.
> --scott
>
> --
> "C'est un Nagra. C'est suisse, et tres, tres precis."

agreed,

suggest you use an oscilloscope instead of a meter.

Mark