"popping" MuRF

chazmataz · Post by **chazmataz** » Tue Sep 14, 2004 6:20 pm

hi everyone,

My MuRF arrived today (hurrah!) and while great fun and sounding amazing, just one small thing bothers me: when i turn the effect off, the amp 'pops' a little, like an earthing problem or something?
i can't remmember if it's been doing it from the start (too busy having fun to turn the damn thing off!), or its developed in the few hours i've had it or maybe its just part of what the MuRF does?

but i was wondering if anyone else has a experienced something similar?

"...whuurrrll.. whooosh...*pop* .."

thanks!
chaz

sir_dss · Post by **sir_dss** » Tue Sep 14, 2004 7:02 pm

I have the same problem but only when I run it in stereo.

And it's not a question of having too much resonance.

What can be done about this? A 100k resistor some where on the output?

chazmataz · Post by **chazmataz** » Wed Sep 15, 2004 6:59 am

What a 100K resistor do?

But surely if the user is required to 'fix' a brand-new pedal, then it's a design fault!?

I haven't tried mine stereo yet, but i will tonight, does the popping come out both channels or just left or right?

hichakhok · Post by **hichakhok** » Wed Sep 15, 2004 9:53 am

Why on earth is it a 'problem'? just mute the channel if you are concerned about blowing speakers.

MC · Post by MC » Wed Sep 15, 2004 10:37 am

It's a problem if you're switching the MuRF in and out on a sound that is active all the time.

hichakhok · Post by **hichakhok** » Thu Sep 16, 2004 5:22 am

MC wrote:It's a problem if you're switching the MuRF in and out on a sound that is active all the time.

I do not follow. Isn't that what the mix knob is for?

Jeff Tanner · Post by **Jeff Tanner** » Wed May 25, 2005 2:17 pm

chazmataz,

I recently bought a Murf and had the "popping" noise when switching off (bypass). I was running my electric violin with peizo pick up into the Murf and then into the amp. Even more recently I put a preamp (Presonus AcoustiQ) between the violin and the Murf. Well, the popping noise disappeared. It was not the reason I got the preamp, but an unintended side effect. I can't explain why it solved the problem for me. Otherwise, my solution was to leave the Murf on all the time because I like the filter.

Jeff