Pars

Thanks Michael! This is a 2U Modushop Dissipante case, so the heatsinks should be sufficient. They have been for the DynaFet, and it runs kinda hot. The Fet and Dynahi boards are quick swaps (relatively), and the CFP will be as well (same angle mounts and all connectors are the same). Mini rant: I had used a single pin JST connector for the outputs on the Dyna boards, since they were only setup for the hot out on the board. Digikey no longer stocks the single pin. I could order some more directly from JST, but shipping is kind of high. Oh well, either pay up, or use something else.

Have the rest of the parts incoming for an SE version of this. Already had many of the resistors in PRP/Roederstein, a few Dale. Had to order the oddballs (110, 560, 7K, 68K). Didn't have enough output transistors either. Or 5K pots (was tempted to parallel a 10K with a 10K resistor, but ordered some 5K I replaced the sigma22 I had with a GRLV I had setup in my DynaFet/Hi setup, and will use this as the testbed. GRLV is set for +/-30V; might drop that a bit, though I do have OPA445s to use. Michael: I presume the 5K pot is what sets the bias? Did you preset yours to middle? Didn't want the thing coming up biased at 2A or anything I'll probably have this ready to test (and maybe listen to) this weekend. Did you notice much difference between your initial SE and final balanced configurations sound-wise? Thanks, and once again, nice job!

Congrats Jacob (and Mrs. Reks!). Much happiness!

I've been pretty happy with my 7 since I got it this summer. It is still on 10 and apple's updates seem intent on slamming me to 11. I can't find where it has downloaded or anything, but am getting really annoyed with a screen popping up saying I need to update and giving me the options of later (as in tonight), etc. but no option for leave me the fuck alone Or Manually. This Apple isn't the one I started with, that's for sure. Sent from my iPhone using Tapatalk

Yep, already understood the HV stuff. Just for future reference, when you use the aluminum oxide insulators, do you also use a thin layer of silicone grease? On both sides?

Yeah, I just use whatever I have around for 1.7V red LEDs... FLV110, others through the years.

Michael, What are you using for insulators for the pass transistors on the GRLV? I was told to use the aluminum oxide insulators (4180G), but the ones you are using appear to be thinner? Reason I ask is I was blind drilling/tapping the heatsinks for these to switch the DynaFET/Hi over to a GRLV, and screw length is an issue using the aluminum oxide ones. If I could get away with something thinner, a 3/8" screw would be OK. 1/2" bottoms out, and 7/16" are hard to come by locally.

Which Dynalo are you talking about Jose? For the regular Dynalo Mk2, in my BOM I show 859-LTL-307ELC for D1, D2 (this is from the thru-hole BOM) For Kerry's Dynalo Mini, I show LTST-C170CKT (4, Red D1, D2) and VLHW4100 (1, White D4)

Happy Birthday DInny!

Nice Michael! You seem to like those bridges... Is this current draw for a balanced amp (4xCFP boards) or a pair?

Kevin retired. Look in the stax mafia thread Sent from my iPhone using Tapatalk

Happy Birthday Chris! Sent from my iPhone using Tapatalk

JH13? Sent from my iPhone using Tapatalk

^ There was a group buy awhile back...

I don't think so. Double check all components, check for solder bridges, etc. And this is both THAT340 chips are getting hot? How hot? Sent from my iPhone using Tapatalk

Why all the fawning here over the Cavalli crap anyway?

Marked up a board gerber with the part designations as best as I could from the CFA2 schematic.

The power supply looks like it could be a goldenreference clone? Different layout, and nice touch with the chips as you noted. Makes me long for the beautiful beautiful music!

I could be wrong, but I don't think that you combine the power draws of each rail? I think Amb explained it once that the draw is actually rail to rail and not each rail to ground. As I said, I could be misremembering this [emoji4] Sent from my iPhone using Tapatalk

Sorry Carl, and RIP Enigma Sent from my iPhone using Tapatalk

You need the MPSW for the outputs, which is 8 per board. The MPSA will work for the others. Do the SMD version.

Team Single Chassis FTW! Nice job Michael!

Hope this works out for you John! Fingers crossed...

Is there any benefit to doing any parts matching on this? From looking at the schematic, maybe Q9/Q11, Q3/Q8, Q1/Q2/Q4/Q6, Q10/Q7, and Q27/Q28 look like potential candidates? I know mwl168 didn't do any matching on his with no ill effects. Sent from my iPhone using Tapatalk

Good idea... no need chasing problems you don't actually have, though good to think about things such as this in advance. Sent from my iPhone using Tapatalk