Hey Guys,
Looking for some troubleshooting help. I have a used Mesa MPULSE 600 that I bought from another TBer a few months ago. Love the tone, love the power, it's everything I've been looking for. I haven't even moved the EQ off flat yet, and haven't engaged the parametrics and I'm loving it.
For the past 6 weeks though I've been having intermittent problems, and I think it's with the amp head. Basically, when I stomp on either my EBS Octabass or Real Tube Blue Tube pedals, about 10 seconds later my signal will cut, such that you can barely hear any sound. Kick off the stomp box, wait another 10-20 seconds and the sound comes back on. The volume difference between effect on/off is noticable, but not ridiculous.
I have tested my effects board trying to make this happen at home (rig stays at studio), but to no avail -- I've even used very ridiculous extreme settings on my effects with respect to gain and it won't crap out so I'm relatively certain that the amp is the issue.
Conditions:
Precision Bass
Input Gain switch on Passive
Gain from 12:00 to 2:30
Main from 11:00 ti 1:00 (yeah, it's kinda loud)
With 4 and 8 ohm loads from Eden 210 and 115 (together and alone)
Last night, on the song that I use the Octabass on, I tried hard not to "dig in" too hard on the bass and made it thru the section without the head crapping out. On the solo where I use the Blue Tube though it died again. On a break, I turned the main down, cranked the GAIN on the amp, and also on the Blue tube to try and make it cut out and it wouldn't -- so I think the tubes/pre are fine.
So I'm thinking it's the main power section on the M600.
Has anyone else experienced this?
Am I experiencing thermal protection? I have listened for the fan and it seems to be working but it's not loud at all, so I'm wondering if maybe there's something wrong with it or maybe it's been modded -- this idea due to complaints I've read that it's too loud.
Any other ideas?
Thanks,
Monk
Looking for some troubleshooting help. I have a used Mesa MPULSE 600 that I bought from another TBer a few months ago. Love the tone, love the power, it's everything I've been looking for. I haven't even moved the EQ off flat yet, and haven't engaged the parametrics and I'm loving it.
For the past 6 weeks though I've been having intermittent problems, and I think it's with the amp head. Basically, when I stomp on either my EBS Octabass or Real Tube Blue Tube pedals, about 10 seconds later my signal will cut, such that you can barely hear any sound. Kick off the stomp box, wait another 10-20 seconds and the sound comes back on. The volume difference between effect on/off is noticable, but not ridiculous.
I have tested my effects board trying to make this happen at home (rig stays at studio), but to no avail -- I've even used very ridiculous extreme settings on my effects with respect to gain and it won't crap out so I'm relatively certain that the amp is the issue.
Conditions:
Precision Bass
Input Gain switch on Passive
Gain from 12:00 to 2:30
Main from 11:00 ti 1:00 (yeah, it's kinda loud)
With 4 and 8 ohm loads from Eden 210 and 115 (together and alone)
Last night, on the song that I use the Octabass on, I tried hard not to "dig in" too hard on the bass and made it thru the section without the head crapping out. On the solo where I use the Blue Tube though it died again. On a break, I turned the main down, cranked the GAIN on the amp, and also on the Blue tube to try and make it cut out and it wouldn't -- so I think the tubes/pre are fine.
So I'm thinking it's the main power section on the M600.
Has anyone else experienced this?
Am I experiencing thermal protection? I have listened for the fan and it seems to be working but it's not loud at all, so I'm wondering if maybe there's something wrong with it or maybe it's been modded -- this idea due to complaints I've read that it's too loud.
Any other ideas?
Thanks,
Monk
