Hi, I've searched this forum and elsewhere and can't find anyone that has a similar issue. I also called Mesa support and the guy seemed very knowledgeable, but said he had never heard of anything like it. So, I'd like to describe what I'm hearing and see if anyone else has experienced this on a 3 channel Dual Rectifier.
When the fx loop is active, I can sometimes get an almost chorusy, ghost-note, bad distortion type sound. It is most prominent on the clean channel (only because of the intended distortion on the other channels) and if I play somewhat hard. I don't actually have anything in the loop, I just use it for the output level and solo boost. Here have been my attempts to isolate and diagnose the problem:
- When I turn the loop off on the back of the amp, this problem does not exist.
- I've changed V1, V2, and V4 (the loop tube) and there is no difference.
- I've changed the Send level from very low to very high and everywhere in between and it doesn't seem to make much of a difference (although, when it is really high it might be a bit more noticeable).
- I've changed the Output level without a significant difference.
I'm just wandering if this is normal. After hearing the cleans with the loop turned off, it is hard to go back. I would just leave the loop off, but I really need the Solo boost function. One other note about my setup is that I pulled the two center power tubes and rectifier to reduce output power (per the manual). That shouldn't affect the loop, but who knows.
By the way, great forum - I hope to be hanging out here often.
Thanks for any help,
Andy
When the fx loop is active, I can sometimes get an almost chorusy, ghost-note, bad distortion type sound. It is most prominent on the clean channel (only because of the intended distortion on the other channels) and if I play somewhat hard. I don't actually have anything in the loop, I just use it for the output level and solo boost. Here have been my attempts to isolate and diagnose the problem:
- When I turn the loop off on the back of the amp, this problem does not exist.
- I've changed V1, V2, and V4 (the loop tube) and there is no difference.
- I've changed the Send level from very low to very high and everywhere in between and it doesn't seem to make much of a difference (although, when it is really high it might be a bit more noticeable).
- I've changed the Output level without a significant difference.
I'm just wandering if this is normal. After hearing the cleans with the loop turned off, it is hard to go back. I would just leave the loop off, but I really need the Solo boost function. One other note about my setup is that I pulled the two center power tubes and rectifier to reduce output power (per the manual). That shouldn't affect the loop, but who knows.
By the way, great forum - I hope to be hanging out here often.
Thanks for any help,
Andy