GK MB115 Tweeter replacement?

smgleitch · #1 11-12-2010, 04:45 AM

Just wondering if after hearing almost everyone who has tried the gm mb series i.e. the mb115, mb210 and mb212 complain about the tweeter and all give the advice to turn it off, if anyone has replaced it. I have a mb115 and I to have a loud hissing tweeter. I was playing last night at low volume in my home and am still getting use to this thing. Turned the tweeter on trying to get a little different sound and really liked what the tweeter had to offer, except for the hiss of course, and I got thinking that I would really like to be able to use the tweeter. Maybe I should look at replacing it, but with what.

Anyone done it? With what kind of results and with what tweeter?

Matthijs · #2 11-12-2010, 05:13 AM

I think you'd first have to consider wether the tweeter itself is the cause of the problem. Is the amp causing to much hiss, or is the tweeter to loud? Might very well be a filter might do the trick.

billfitzmaurice · #3 11-12-2010, 06:06 AM

Quote:

Originally Posted by smgleitch

I have a mb115 and I to have a loud hissing tweeter.

Tweeters don't hiss. Amps do. Changing to a different tweeter won't make any difference.

Matthijs · #4 11-12-2010, 06:52 AM

I was trying for a mor subtle way to deliver the same message

Depending on the hiss, taming the tweeter in some way might help a bit though.

aproud1 · #5 11-12-2010, 07:05 AM

You could try putting in an L-Pad to be able to control the tweeter volume. This would take some modification though.

smgleitch · #6 11-12-2010, 08:11 AM

Just thought GK had put a cheap tweeter in it that could be swapped. Was hoping someone had already dealt with it. Looking for a cheap solution but it is not that big of a deal. Sounds great with it off just liked the option of that extra high end boost.

Matthijs · #7 11-12-2010, 09:08 AM

Besides leaving the tweeter off I think you've got two options:

You could dampen the tweeter a bit to find a balance between a bit less hiss and still some extra highs. Typically you could do that with a L pad, but that would be a hassle on your metalcombo. You can also solder in two resistances to dampen the tweeter at say 3 or 6 db. Principle is the same as an L pad and it is dead cheap.

If the hiss is really high you could also try filtering the highs above say 5 khz. This can also be done quite simply by adding a capacitor, still cheaper than a new tweeter would be.

Both solutions might help, the problem is your only fighting the symptom, the hiss is originating somewhere else.