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How does that 1x12 3/4 tuned back sounds. I have ordered one new and waiting. I am planing to use it with my Mark IV head. I appreciate any infor/review about 3/4. Thats going to be my only cab. I returned my wide 1x12 open back because it was too small to keep MKIV head on top of it :lol:

No my one is wide(medium) A head. GLydian

I use BOSS RC-2 before that I tried Digitech JamMan. JamMan had lot of features like USB and Memory card but once you start adding layers sound was getting somewhat muddy. But RC-2 was simple low tech device still does the job very nice. Most importantly it has 3 diferent ways to create a loop...

I have tried bad 6L6 and good EL34 I still preferred 6L6. So I got 4 really good 6L6 SED=C=. That is the best. I think most Mesas are really designed around 6L6 in mind not EL34. EL34 is added as a verity.

Of cause!! The best way to share and store Presets is SysEx files (SysEx is a MIDI message in binary format and G-Major understand these messages). Using GLydian you can create a SysEx message and save it to hard disk or send it directly to your G-Major. You can share these SysEx files with...

Hi everyone, I was following this forum for some time after I bough my Mark IV. I used to advertise following message in all the forums I join but some how I forgot this time due to my excitement about MKIV last few weeks. Ok here it goes. I have developed a software to edit patches for T.C...

I also have a similar problem with R2 LED. Some times it does not lite or lit poorly when the channel changed to R2 but when I touch/press the LED, it lights up again properly. It is not a loose connection,I checked that. Any body know how to fix it. It does not affect the sound though.

Here is my Mark IV with 1x12 wide body. 1x12 wide body cab sounded really nice the best I heard so far, but returned it and now special ordered 3/4 back 1x12 because the cab was little smaller than the head around 1 inch. And I hope 3/4 will sound better too (at least WRT low end. GC said it...

++++++1 for Doug. Having lot of recommendations from Rig-Talk people I bought tubes for my Mark IV form Doug. He was a very nice guy and got time to explain stuff I wanted to know. And had a good idea what I was asking. Tubes came fast and packed nice. They sounded really nice in my amp.

I have a wide/medium head series A Mark IV. I found out this by looking at the circuit diagrams and the manuals description and some of my tests plus forum people. V1 - 12AX7 A and B sections 1st gain stage V2 - 12AX7 A and B sections Effect loop in and out stages (Some one here said that the...

Before you guys get confused, My Mark IV is a wide/medium body 23'' wide and it is just the head. There was a date some where and it said 92 as I remember. I think the ICs may be for the switching system, may be I am wrong :? I don't see any significant discoloration on any components, but only...

Has any one used THD 212 cab with Mark IV. How does it sound compare to any other 2x12 closed backs. Right now I have cheap Marshell 2x12 closed back with one speaker replaced with V30. Mesa 2x12 I saw in GC was very heavy and looked ugly :? I know that is not the best way to evaluate music gear.

As I promised before here are some images of my Mark IV series A internals.

Ok here is some things I found out about my Mark IV series A amp and tubes. Obviously V1 is the most important tube and affect all the channels. And I got a hi-gain Tung-Sol marked 110/110 and it maid big difference to what I had before JJ EC83 marked 111/114. V2 tubes A/B controls the effect...

The reverb runs thru V4 A and B in Mark IV A version, I have have 12AT7 on this position.

Yes there is one that works in any OS (Windows/Mac/Linux/Unix...) Its called GLydian :D . I wrote it and still maintaining and there are lots of people using it. It is available to download from www.Rig-Talk.com effect forum...

I also bought a used Mark IV two weeks back, Had the similar problem with loop and reverb. Replaced V2 and V4 valves and now it is fine. I think People sell used amps always put there old tubes on them just cut corners. I called Mesa too, they are very helpful. Ordered correct tube 12AT7 for...