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Reminds me of a 70's/80's Carvin cab.

Hello...that is my video and I appreciate the comments. Hope all works well with anyone who has this mod done.

I have my chassis on the bench...I cannot find what you are looking for...can you give me an idea of where it is located? Maybe a pic or two...cheers, Paul

Spoke with Mike B. on March 6, 2017. He said I could use 6L6's in the outer sockets of my 1988 Blue Stripe Simul-Class. BUT...use matching Mesa Tubes in Yellow or Red. Cheers,Paul

I do not have the resources to record but all I can tell you it made all the difference for me in many ways. My Blue Stripe was useless at first. Flubby bass...piercing highs...weak mids...fizzy lead tones. This mod changed everything for me. Solid bottom and mids. Not to bright but still get...

Hi, I put a 1000k in C30 and another 1000K above C30. Can't remember location...it came off a pin in V3 to ground on circuit board. It took away all buzz and fizz. It allowed me to jack up the Lead Drive to silky smooth but biting tones. Love my Blue Strip now. Cheers, Paul

First Mark III was a fully loaded head (except A/C plug). Serial number was 15924. She is gone now...nothing ever compared to its performance and tone. My present Mark III is a blue stripe combo that pales in comparison to my first Mark III. Its serial number is 226??. MB's initials are inside...

I once owned a Mark III like the one on the bottom. Sold it back in the early 1990's. Its serial number was 15924...still think about her still. I have a blue stripe and it doesn't even come close to my first one. Cheers, Paul

Just found this on this site... "C516 (In presence control circuit) : 0.01 microfarat should be stock - replace it with 0.005 microfarat. The presence control works different afterwards. I set it normally around 3. At 5 it is still usable for distortion. And at 7 it starts sound really...

Yes, the "R" indicates a reverb fix. Cheers, Paul

Hi, Mine already has the .005µf cap in place. What was this mod intended to be? Cheers, Paul

Where is the EQ Supply located...I can't locate the 2 caps...please help. Cheers, Paul

Phase Inverter

What is the mod?? Cheers, Paul

Hi, What was the behavior of your EQ for you to need to do this? Cheers, Paul

Thank you Dave, No doubt it needs serious bench time and an experienced tech...I was just reaching out in desperation in that I could repair myself but your response was the wake up call that I needed. Deeply appreciate it, Cheers, Paul Dave

My first Mark III was the head version...can't remember any stripe. Serial number is 15924. My present Mark III is a combo and it's serial number is 226??

I once owned a 1985 Mark III. I changed the tubes about 1992 to 5881's as recommended by Boogie. The amp killed them in about a week or less. I contacted Boogie and they asked what was the serial number...anyhow, the newer tubes were not compatible to the older Mark III as they were using a...

Item...1988 Mark III Blue Stripe I once owned a Mark III no stripe from 1985...serial # 15924. I know what SimulClass sounds like as well as that singing lead channel. It stayed with me ever since the beginning so when I cranked up my 1988 blue Stripe, I knew there was something off. 1- The amp...