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Hey Keith, The kits are only going to come in one configuration and will include the chassis, transformer set, PCB set, graphic sliders, and a few other items. The kit will not have everything needed to finish the amp, but will have suggestions for components. The power and output transformers...

Getting close! I didn’t get any feedback so I had to make some executive decisions: Long chassis Simul 4/8 only speaker outputs 120V / 60 Hz only I designed custom transformers for the kit, I’ve ordered one prototype set and should have them in hand this month and will be able to finish the...

Try transient analysis as opposed to AC analysis

Can someone please take a look inside their boogie high gain amp switcher please and let me know the part number of the Jensen transformers? From memory, I was thinking they were JT-11P-1HPC. I had and sold one, but can't find the pictures. Wondering how many transformers and the P/N, I may try...

Here's a couple other questions: Long head format or short head? Simul-class or 60/100 4/8 or 4/8/16 ohm speaker taps? 120V 60 Hz only, or 100/120/240 50/60 Hz?

V3 circled in red

Try checking your combo speaker cable, and solder connections to the speaker. Play a cord and jiggle the cable. To be safe, you can plug your other cab to one of the four ohm jacks, and the combo speaker to the other four ohm jack.

My opinion is that power tube differences in a mark-style are overstated. Maybe some differences, but minor enough as the mark has a lot of controls to tweak the sound to compensate

Hey all, Still don't know about pricing. I haven't revised the chassis prints based on feedback from the fab shop so don't yet have final numbers. I also need to mod the PCB designs for the fab-house and get a quote. I haven't had much time as I'd like to spend on this lately, but will be...

What are your settings, and what speaker cab are you using?

Great work! This type of project has been on my radar as well, I picked up a KHE 4x4 FX for the time being as I’m impatient and have had other priorities. I’m reasonably happy with the KHE, but wish I could route preamps to different power amps, so it’s cool to see that your design supports...

Boogie tends to cold bias tubes, inner tubes are for Class A/B and outer are for Class A. A typical Class A amp has tubes biased at 100% of plate dissipation, you can see Boogie is around 70%. A typical Class A/B tube amp will be biased around 70%, you can see Boogie is around 50%. If nothing...

Yes to the first two questions. Effects send pot works but mix does not. Send works the same as before the mod

I suspect that the new Mark VII mode is as close to simul-class recto as we're going to get! Petrucci used to play Marks into Recto power sections. You could always get a Studio/Quad/Triaxis and fire it into a Recto 2:100

I did the series mod on a Rev G per Boogie's instructions a few months back, I can run a test for you if you'd like. If I understand your question, a good test would be to plug an empty plug into the effects return to see if there is any bleed, did you have something else in mind? I think the...

You still need a load for sure

My guess is they wanted to drop voltage and implemented that way to split up the dissipation over two resistors. I've never seen a factory schematic for the blue stripe though. Don't be scared to give the factory call, they give fantastic support!

I assume this is a four power tube Mk III? What kind of tubes are loaded in it? If you have four power tubes that draw 1.5A each on the heaters (EL34, 6CA7, KT77) then I could see a 0.05 resistor getting pretty warm

The inductors are like $4 a piece from Boogie's factory store, where are you looking? Usually I buy other stuff as well when I order so ends up being free shipping. I've put a lot of thought into output transformers! The OT I used in the 60W build was a Magnetic Components ClassicTone (now...

I've had good luck with op-amp based gyrators in this circuit, they simulated well and sounded fine to my ears. I abandoned gyrators when I found I can buy the inductors right from Boogie's online store. This dude's C+ amp uses gyrators for the EQ: