Hello-
just picked up a 3 channel Dual Recto (2007 model I believe based on serial # in 42000's) - great Black Friday sale at local music shop, $800 with MIDI foot switch, I couldn't say no. Total impulse buy, first Mesa amp I've owned or even played - previously only used Marshall & Randall heads. Amp looks to be well-maintained & in great physical condition, a previous owner had some work or a re-tube done to it, there's a pro amp shop service tag on the back.
Question: Channel 1 (Raw & Pushed settings) & Channel 2 (Raw, Vintage & Modern settings) all sound great, but Channel 3 (Red) only sounds good on Modern- selecting Vintage or Raw totally kills the treble - it sounds like I suddenly cranked the Presence and Treble all the way to 0. As a complete NOOB to Mesa, I'm not sure where to start trouble-shooting. Maybe a bad pre-amp tube? I have a couple of spare 12AX7 tubes, wanted to throw a post up before I starting fiddling around to see if there was any known issue that causes this.
EDIT 1: After fiddling with settings a bit, determined the issue is only present at very low volume on Channel 3 (Master set below about 20% 2/10) - turning Master level up to about 25% or higher makes it sound fine on Raw & Vintage settings, no loss of high end. No issues at all on Channel 2 Raw/Vintage, even at very low Master levels. Is this just normal for Channel 3, or do I need to continue troubleshooting?
EDIT 2: Well, this is now a much more serious issue, I'm going to hijack my own thread (great start on this board...) FX loop appears to have stopped working entirely! While playing today, volume suddenly cut out - I get only very low sound levels with the loop activated via the selector knob on the rear of the head (when set to footswitch, LOOP ON, or any of the 3 individual channels) – only when set to "Loop Bypass" does amp works normally. I replaced the V4 pre-amp tube; no help. For giggles I swapped out the MIDI cable on the footswitch, no help. Issue exists whether MIDI cable is connected to the head or not, selecting “FX” on/off via the footswitch also makes no difference.
I dug through the manual & internet but can’t find anything talking about a separate fuse specifically existing for the effects loop- does one exist? Thoughts? Head is going back to store tomorrow to troubleshoot, I don't want to return it- if anyone has thoughts, please post.
Thanks
just picked up a 3 channel Dual Recto (2007 model I believe based on serial # in 42000's) - great Black Friday sale at local music shop, $800 with MIDI foot switch, I couldn't say no. Total impulse buy, first Mesa amp I've owned or even played - previously only used Marshall & Randall heads. Amp looks to be well-maintained & in great physical condition, a previous owner had some work or a re-tube done to it, there's a pro amp shop service tag on the back.
Question: Channel 1 (Raw & Pushed settings) & Channel 2 (Raw, Vintage & Modern settings) all sound great, but Channel 3 (Red) only sounds good on Modern- selecting Vintage or Raw totally kills the treble - it sounds like I suddenly cranked the Presence and Treble all the way to 0. As a complete NOOB to Mesa, I'm not sure where to start trouble-shooting. Maybe a bad pre-amp tube? I have a couple of spare 12AX7 tubes, wanted to throw a post up before I starting fiddling around to see if there was any known issue that causes this.
EDIT 1: After fiddling with settings a bit, determined the issue is only present at very low volume on Channel 3 (Master set below about 20% 2/10) - turning Master level up to about 25% or higher makes it sound fine on Raw & Vintage settings, no loss of high end. No issues at all on Channel 2 Raw/Vintage, even at very low Master levels. Is this just normal for Channel 3, or do I need to continue troubleshooting?
EDIT 2: Well, this is now a much more serious issue, I'm going to hijack my own thread (great start on this board...) FX loop appears to have stopped working entirely! While playing today, volume suddenly cut out - I get only very low sound levels with the loop activated via the selector knob on the rear of the head (when set to footswitch, LOOP ON, or any of the 3 individual channels) – only when set to "Loop Bypass" does amp works normally. I replaced the V4 pre-amp tube; no help. For giggles I swapped out the MIDI cable on the footswitch, no help. Issue exists whether MIDI cable is connected to the head or not, selecting “FX” on/off via the footswitch also makes no difference.
I dug through the manual & internet but can’t find anything talking about a separate fuse specifically existing for the effects loop- does one exist? Thoughts? Head is going back to store tomorrow to troubleshoot, I don't want to return it- if anyone has thoughts, please post.
Thanks