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  1. J

    Mark IIB to IIC+ Conversion

    Not the case, Boogie sells them.
  2. J

    Mark IIB to IIC+ Conversion

    I agree for the most part. Measured LDR5 on-resistance from an actual IIC+ was around 150 ohms which is concerning to me, particularly in the lower faders. Agree it doesn't impact resonant frequency, but does affect the Q. For the lower three bands you have the inductor resistance...
  3. J

    Mark IIB to IIC+ Conversion

    I found them to be good replacements for the VTL5C4, but I haven't used them in place of the VTL5C1. In the 60W build I used SR2 alongside Vactec VTL5C1, worked well as the forward voltage was close enough for the lead master just ended up with higher on resistance than if I'd used a Vactec 5C4...
  4. J

    Mesa Boogie Mark 5 line out

    It's tapped off the speaker output jack
  5. J

    New OEM Rackmount Kit for Mark IIC++

    Nice work!
  6. J

    Mesa Boogie Mark 5 line out

    Yes and yes!
  7. J

    Mesa Boogie Mark 5 line out

    Yes, you can use the slave out, connect it to a line input on the mixer. You don't need another box between unless you get a ground loop
  8. J

    Mark IIB to IIC+ Conversion

    Also, these beauties arrived today, I have ten on hand. Send me a PM if you’re interested in one!
  9. J

    Mark IIB to IIC+ Conversion

    Alrighty, let's see if this works. I made an advanced Tonex tone model of the 60W amp setup for a lead sound as a test. I made a raw capture while connected to a speaker cab, so you would have to add a Tonex cab or your own IR to the tone model. The audio preview for the tone model was done with...
  10. J

    Mark IIB to IIC+ Conversion

    Pretty cool news today. As some of you have discovered, one of the challenges with the conversion is sourcing the vactrols as they are obsolete. I've been scouring for a replacement for some time and finally found a device that looks like it will work on paper, but I can't find anyone selling...
  11. J

    Mark IIB to IIC+ Conversion

    I've been messing with this Tonex for a few days and it wasn't as easy as I'd hoped. My old focusrite liquid saffire interface fed back like crazy when I hooked it up, and a presonus studio 26 had some funky background noise going on and the captures were way too bassy. I've ordered IK's Axe I/O...
  12. J

    Vintage Mark-style PCB and chassis kit

    The mounting holes are for a IIB as that's all I had access to. I assumed the IIC variants were the same, does anyone know if they're different? The only benefit I see in the long chassis is that the presence control is on the front panel. 17" would have more mounting options and would be lower...
  13. J

    Vintage Mark-style PCB and chassis kit

    Below is a 3D rendering of the draft design without the faceplate. I've been in discussions with the company that makes Dr Z's chassis as they are not far from me, but they have been slower to respond than I'd like. May look to engage some other metal shops if I don't hear back within the next...
  14. J

    Vintage Mark-style PCB and chassis kit

    Want to gauge interest on a PCB set and chassis kit for a Markish amp. I've designed a chassis and it's off to a metal shop for quote, an overview and some features I'm planning to include: Boards setup to accommodate a IIC+ circuit with some extras offered further down the Mark lineage and...
  15. J

    Mark IIB to IIC+ Conversion

    Tonex pedal finally shipped so I should have it next week and hopefully some models for you all to try shortly after that. Also, ordered ten boards from a different MFG today, they said around four week lead time. The new ones will be green with some minor adjustments, and 3 oz copper per...
  16. J

    Servicing Mark IIb coliseum

    Thanks for sharing! Where did you get the 1W carbon comps? I've never been able to find 150k. I know you're down a path already, but Just Radios in Canada sells good quality 600V axial electrolytics at reasonable prices and I've had great luck with them. They have 30, 33, 40, and 47 uF axials...
  17. J

    New to the forum and Mesa amps

    I’m kind of setup like that, dry center cab has two boogie V30s and my wet cabs are 12L 1x12s. When I turn on chorus in the wet cabs it sounds huge
  18. J

    New to the forum and Mesa amps

    Indeed, and they sell their speakers through their factory store
  19. J

    New to the forum and Mesa amps

    Give the Mark IV mode a shot and drop the bass to 9 o'clock and boost the 80 a fair amount and the 240 a bit in the graphic. Drop treble to 1 o'clock, mid and presence to 11 o'clock. Drop the 750 fader down until it sounds right and boost the 2200 and 6600 a bit. Tweak from there, you may want...
  20. J

    Mark II chassis designations

    H = hundred, not sure on SSQ. If convention is like later amps, the first S would be sixty
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