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Am I the only one having problems with MarkBass tweeters?

A

Agito

Jun 27, 2009
742
3
#1
Hi
It's the 4th time I'm having problem with MarkBass amps though I keep all the basic rules to make sure the amp will work fine.

First time with my first CMD151P (We'll call it amp no.1)
The power supply/board went poof
2nd time - tweeter went poof
3rd time - again with the tweeter
The store replaced my amplifier (Thankfully the store is made of great people that will give the best support)

They gave me the new CMD151P (Combo head II)
Everything was working fine, I made sure the amplifier won't clip, I didn't use high volumes and barely played with effects, and even if I did, they didn't clip or were in high volume.

And bam
4th time the tweeter's gone.

Anyone else had the same problem as I'm having?
Just wanted to know, cause this is ridiculous...
 
#3
Oh, sorry, got confused with the social network and the actual thing, it's not a word which I use often.
Anyhow, it can't be the pickups, I used a lot of different basses on the amp, first it was a passive J-Bass, then Ibanez Prestige and a Precision, it can't be the instrument, I made sure.
 
#4
Agito said:
Oh, sorry, got confused with the social network and the actual thing, it's not a word which I use often.
Anyhow, it can't be the pickups, I used a lot of different basses on the amp, first it was a passive J-Bass, then Ibanez Prestige and a Precision, it can't be the instrument, I made sure.
Click to expand...

This is a strange one, since there are a zillion posts about these cabs and combo's, with very few blown tweeter posts that I'm aware of (at least no more than is typical with most cabs).

Are you using an envelope filter? That can do some nasty things to tweeters when set incorrectly?
 
#6
I used envelope filter and fuzz a few times, but not in the way it can cause any damage, I used it as kinda of a auto-wah thingy/the bass sound for Amanitas by Les Claypool.

And unfortunately I don't know if I can return it, it's been a year and a half already and the store stopped supplying MarkBass because of some issue... (not technical one)
 
#8
It's impossible for one reason, the last time I used the envelope was at least month ago, and I mainly play clean and even if I do plug effects I'm not playing in high volumes that can cause any damage...
 
#9
Agito said:
It's impossible for one reason, the last time I used the envelope was at least month ago, and I mainly play clean and even if I do plug effects I'm not playing in high volumes that can cause any damage...
Click to expand...

Not sure what is going on then. Again, if you experience the same thing over and over again, and nobody else does, the issue is not with the amp. Good luck with it though, but not sure what it would be except for the envelope filter, which I think can do some funky things to tweeters even at moderate volumes. Playing 'clean' has nothing to do with it.
 
#12
Wondering if you're not clipping the amp, or otherwise overloading the tweeter with high frequencies? Clipping is hardest on tweeters, because square waves contain a lot of high frequency energy. One solution is to replace the stock piezo tweeter with something better. That would probably improve the sound as well....
 
#14
It's weird, I never play in high volumes and never clip the amp nor boosting high frequencies.... Everything was fine the last rehearsal last Friday, I plugged the amp today it worked a bit and then the tweeter started to showing dead signals... (No hiss)
 

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