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Does anyone know Mesa Boogie Mark II Reverb tube slot V4, does it impact and affect to lead channel tone even if reverb is set to zero?

Thanks for those links and info, i have seen that manual some time ago past.

Can you use Sylvania 6l6GB:s on Mesa Boogie Mark II amps, amplifier own manual says 6l6GC:s thought? Quickly research its not recommended to use GB tubes on GC amps, is that true and is it safe to use 6l6GB tubes if amplifier has build on 6l6GC:s?

Okey nice to know i was thinking same that it will affect on lead channel thanks for that info.

Ok good to know.

Does anyone know what functions that V1, is exactly running on Mesa Boogie Mark II amplifiers? Because what i have read is that its some kind of input stage just for clean channel and not lead channel, if that is case then would it have any affect on lead channel tone?

Does it harm or damage amp which has preamp-tube on reverb, if you just unplug reverb tank rca connectors and remove reverb tank away? If you start using that amplifier without reverb tank, is that safe or not would be nice to know?

Also what could happening if i would let that switch to be Fetron position and not 12ax7 position, would it destroy or damage some components or should volume just go away or amp shut down what it could do?

Nice to see some pics ye it looks almost same i have just few different resistors there, could you get same photo but after fetron were bypassed on the board? And does that fetron has some kind of own board inside amplifier, and can you let me know what things they did on that your II-A exactly?

Does anyone have some pictures for that bypass routing on that Fetron, or if you have pictures amplifers which has that Fetron circuit on it still would be nice to see how it looks inside of unit? Also what could happening if you would have that Fetron circuit there, and you would use that...

Here is picture inside amplifier where you can see that 2-way switch, not sure if that helps you guys to check if someone has mod or remove that fetron option and that why he did use 12ax7 even switch were set to fetron picture link below does that tell anything? https://ibb.co/XXS4PQn

I would like to do that but thing is that if someone has done something on this one, how i can check does that switch works like it should if i flip it other way around and someone has modded it there is risk do damage? Can someone give me some kind of pics guts inside of Mark II:s where is...

Does anyone know what would be case on this my amplifier, because bottom is 2-way switch where you can choose Fetron or 12ax7A. But i did get this amp and it was set to right, which i guess is Fetron spot but i did check that one tube slot which should be V1 Fetron socket? And someone has...

Hi Yeah those two speakers sounds little bit different both are amazing sounding speakers ,And both of those works great for old Metallica tones bro.

Hi Thanks again bro ,nice to see all those info. Yeah Trident A-range in my ears have 1.2 octave Q ,and there is also notes that unit have 1.2 Q witch makes a sense. And B&B seems to be 1.5 ,like those old units did have. That 1.0 what new ones have sounds good too ,its little bit more scooping...

Hi Wow thanks a lot bro ,now I can see those settings very clear. Yeah would be very nice to see that GML EQ settings too ,if you find those somewhere please share that info for us. Hey another question if you know almost everything about that MOP ,how they did run those B&B EQ and Trident...

Hi Nice info bro ,lots of good stuff you have discovery. Hey I find also some thread where some dude tell us some info for cabs ,check that too link is below. http://www.thegearpage.net/board/showthread.php?t=593866 BTW do you know Flemming AJFA notes what settings/values that B&& 2 EQ have...

Hi I did find this today ,there is some info for recording sessions whit Metallica. Biggest confused was that ,there have been some info for those mics what they did use in those two guitar cabinets. I have hear they did use three mics SM57 AKG and B&K ,but in that thread they mention there was...

Hey Okey thanks.

Hey Nice work bro BoogieMan sound good too :lol: