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Mesa Boogie Halfback Cabinet c90 & evm12L for $300. Not a bad price and it looks clean. Just missing its Mesa/Boogie logo. Located in Fresno, CA https://www.facebook.com/marketplace/item/441654858213215

@GJgo are the PT (190555) and OT (0160322) the same transformers in the IIB Coliseum?

This comment resonates with my experience. Between my 2 Duals (Rev E & F) and my Triple G-->C, I can throw a good boost in front of any of them and use a PEQ in the loop to slightly boost the overall preamp signal and bring out a little more of the frequencies I want with good results. As for...

I wouldn't put much stock in the whole F vs G debate. According to Mike B there weren't many changes between E, F and G. The Revisions which break from that are C & D due to the PCB. The Rev C mod is cool but isn't 100% to C specs & kills the clean channel. The earlier comment about...

@cobrahead1030 good choice. Scott has sold me 2 headshells in the past. Prices are fair and the fit & finish are excellent. Plus Scott is a pleasure to work with. Last one I bought from him is housing a Mark 3+ DRG No Stripe w/ 105pt.

The IVa is a beast of an amp. I always find myself gravitating towards it or my IIC+/++'s when I have an itch to play a Mark. BTW asked Mike about the IVb transitional model. He said there are only 2 IV circuits A & B. The whole transitional model can be chalked up to using leftover...

A 3+ Red Stripe will get you close enough. I own IIC+/++'s in S,D,& H configurations and a 3+ Red Stripe HRG. The difference is in the low mids. The IIC+/++'s seem to breath a little easier (aka IIC+ bounce). The stock III's are a little more stiff and have hairy top ends. The 3+ mod...

Burton Era hands down.

Mike and I had this conversation a couple days ago when I was at Mesa. He did a IIC SR—>IIC+/++ SRG conversion for me. The only difference in tone from a IIC—>IIC+ upgrade from a factory IIC+ would be the power transformer (100 vs 105), which is negligible. If you have the export...

@Anxiety Serum ok so you found the blown fuse. My 2 cents, replace the fuse and buy a new quad of tubes from TAD, Tube Amp Doctor. Your old tubes are TAD, so they should have numbers on the base indicating their values. Those numbers will enable TAD to provide you a matched quad which should...

Was there a burnt smell when the amp shut down? If not, you most likely did not fry a screen resistor and just had an output tube go south. The reason why the amp shut down is due to a fuse blowing. They do this to protect the amp. You’ll need to replace the fuse and output tubes. I put a...

Mark IIC+ DRG w/ 105pt all stock down to each component. Pull Treble, Deep and Lead.

Mark III+ DRG No Stripe w/105pt. Pull Treble, Middle, Deep, Lead. GEQ different because I find the III’s a little brighter and tighter compared to the IIC+’s. ***May end up selling this one***

Mark IIC+/++ HRG w/ P100 Pull: Treble Shift, Pull Deep, Pull Lead & Pull Middle for ++. Similar settings to DRG with exception to GEQ.

Mark IIC+/++ DRG w/ 105pt Pull: Treble Shift, Pull Deep, Pull Lead & Pull Middle for ++.

Welcome!

@PurityS.L.G good point. Most Mesa's are biased very cold. The stock bias point on my old Badlander 100 was 15ma. Most EL34 amps run around 34ma. Not sure why it was biased to 15ma, but the tubes lasted long and sounded good.

Calling @UberKrankenschtein …. Seeing that you currently own all these amps, would you care to weigh in on this thread?

@Jimty I spoke with Mike B about this earlier last week. He said there's no such thing as an A/B transitional circuit. There are 2 circuits A & B. As far as those transitional models go, Mesa always used whatever parts they had. Hence the reason you see early Mark IVb's with Mark IVa...

Welcome Klugster, glad to see you made it to Mecca.