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Use the "Search" and ye shall find... http://forum.grailtone.com/viewtopic.php?f=3&t=27879 try page 3, but read it all http://forum.grailtone.com/viewtopic.php?f=27&t=44639&hilit=Mark+bright+C30+cap+leg As for the mini-toggle, I have a IIC(+) and it has a cap equivalent to the C30 cap on the...

If you're buying caps...I'd suggest that you buy a 500 pF and a 1000 pF. The 1000pF makes it like a IIC+, but the 500pF makes it like a Mark IV. In my Mark IIC -> IIC+, I think that I like the 500pF best. Just a suggestion. Chip

If he was using Dual Rec's on Six Degrees, my dying question is what amp did he use for the euphoric opening riff of About to Crash (Reprise)!?! Harmonically explosive! I've never been able to get it to sound right when I play it. I figured it was just my fingers. If it is from a Dual Rec, I...

...and I didn't know that Petrucci was using a Dual Rec that early. I thought that it came in much later with Train of Thought. What songs did he use it on for Scenes from a Memory and Six Degrees? Thanks, Chip

What's that skinny Mesa Boogie rack piece that is tucked below the TriAxis and above the Mark IV head? Chip

I actually thought that the marshall sounded the best of the lot. Excellent bite. No splat on the chugga-chuggas. As soon as the Marshall clip started, I forgot that I was supposed to be listening for tone and I just started kickin' back to the metal. That's the way it's supposed to be. Chip

Hi George, If the de-mod is simply removing the 1000pF cap, you should be aware that you can put it on a switch. I put the switch in place of the slave-out jack on the back of the amp (a fully-reversible thing to do). Now, I can use the stock 1000pF cap or some other value (in my case 300...

Notice that the pic of the head on the half-stack has the silver tipped knobs. All the rest have black knobs per the standard IIC dress. Were there any IIC's that had silver knobs? Didn't silver knobs end with the IIB? Chip

If I may offer a small correction, the IIC+ effects loop comes after the first V2 stage and not the V1 stages. And actually, on my amp, the "first" V2 stage is actually V2B (meaning pins 6, 7, 8), not V2A as shown in the schematics on the web. Furthermore, the IIC+ effects loop (I believe)...

Zooming in close, the circuit block diagram at the bottom of Page 2 is for the IIC+ and not the IIC. Yet, this brochure clearly title "IIC". Now I'm no expert in Mesa Boogie product literature, but I've never seen any Mesa material that makes a distinction between the IIC+ and the IIC. Sure...

Yeah, here's the guy who made an effects loop out of his pre-amp "send" and "return" that's hidden on the underside of the chassis... http://forum.grailtone.com/viewtopic.php?f=3&t=37572 He had a special buffer circuit made, which is what he's showing pictures of. It's not a great thread for...

Or, if you've got a common Graphic Eq Pedal like the Boss GE-7, you could try something like... 100Hz: +5.5 dB (ie. up to the first of its three tick marks) 200Hz: +4 dB (up to just shy of the first tick mark) 400Hz: +2 dB (just above the center) 800Hz and Above: Zero. Chip

I had a IIC (now IIC+). Time delay effects work fine with the IIC until you kick into the lead channel. Then, it destroys everything. Its exactly like running your delay pedal IN FRONT of your distortion pedal. Sounds fine when playing clean...sound NASTY once you kick in the distortion...

As BB said, the "Pull Deep" affects the frequency response of one of the tube stages in the preamp. For the IIC+, it affects the response of the tube stage that is right after the effects loop before the signal heads off to the GEQ and the power amp. Here's the change in frequency response of...

Your children are circled about the fire...tell us a story, oh wise one...tell us a story of heroes and legends and tone of the gods... Chip

OK, BB, if you had to give up your boogie(s) or your Soldano...which would go and which would stay? Chip

Wow, I hadn't noticed that they only used 2 of the 4 screws to hold it in place. Yikes! Chip

OT replacement is a pretty big deal. That could have a pretty decent impact on the sound/feel of the amp. Chip

Hi All, With the two old articles posted recently about Randall Smith and about the factory, it put me in a mind to go look up what is happening price-wise for those old Mark I's. Well, here's one on eBay...

Since the Mark series started as a deviation on the blackface-era Fenders, I modded by Fender Deluxe Reverb Re-issue to include the Mark IIC+ / Mark IV lead circuit. Let me tell you, the sound and feel of the overdrive is nothing like my Mark IIC+. Based on this experience, I believe that the...