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Thanks all for the replies. If I recall correctly, there was an issue with the reverb tank when installing the EV. The reverb tank needs to be removed do to space constraints in the cabinet. Can anyone confirm this? Thanks, Dave

There was a post a while ago about how to install a EVM 12L into a Mark IV wide body combo but I can't find it. Does anyone have any info on doing this? Thanks, Dave

breogan, Thank you. Dave

breogan, Thanks for the reply. So if four 6L6s produce about 55 watts in Tweed mode, the four 6v6s are running at about 22 watts or so on Tweed mode. Does that sound about right? Thanks

Hi All, In a Mark IV, what is the total wattage with four 6v6 power tubes? Thanks

Trem, It's not what's wrong with the tone. It's what's not right. I can't describe it but I'll know it when I hear it. phyrexia, Thank you. That's exactly what I was looking for. stoz, I've tried the settings from the manual but none of them were exactly right for me. I feel like I've been...

Trem, Thanks for responding. 1. Not exactly sure how to answer this. It's a late model amp, 2005 or 2006. It has fresh tubes. I've run it with four 6L6s and two 6L6s and two EL34s. It currently has four 6L6s. There are no problems with the amp. 2. I don't have any typical settings. 3. It has...

Hey all, I've had a Mark IV wide body combo for years but haven't been able to dial it in. I've tackled this from time to time using the sample settings and recommended settings from the boards. This hasn't worked for me very well. I've read the manual many times as well as tips given on the...

Hey all. I need a little assistance with calculating the wattage in a Mark IV using two EL34s and two Yellow Jacket EL84s. From the Mark IV manual, in class A mode, the EL34s run at about 30 watts triode and 50 watts pentode. It also says that running in simul-class boosts the wattage to 70...