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I'm not sure whether you could use the MPSA06/56 in this application? These are still available. Kevin might need to offer his opinion on that. These are rated at 625mW vs. the 1W for either the MPSWs or the PZTA SMD devices. EDIT: not sure why my earlier edit didn't show up (user error?) At any rate, I see that Arrow still has the MPSWs available in single quantities... Sent from my iPhone using Tapatalk

Normally you just load the .zip file into a gerber viewer. I usually use https://gerber-viewer.easyeda.com, but there are a bunch of them out there. And as Kevin mentioned, no on the 7815/7915 v-regs. The SMD version would be the path of least resistance, and the device sizes used aren't bad at all to solder. Sent from my iPhone using Tapatalk

Take a look at the link in this post. https://www.head-case.org/forums/topic/11779-stax-mafia-circuit-boards/?do=findComment&comment=764131 Not sure what you are asking regarding SMD and non-SMD (through-hole)? I would look maybe at the 1.2 version, but check with a gerber viewer. The ebay link that you provided is not the SS Dynalo but the unbal-to-bal board (not the same thing). It also isn't a dynahi balanced (auction title). Not even close. Boards are so cheap to have made anymore that you would be better off to return these, and have some made from the proper gerber files. Also note that the through-hole devices (On-Semi MPSW06/MPSW56) are discontinued, so not sure where you will find genuine parts of these... hence, the SMD version as those are available.

Good for you! Sent from my iPhone using Tapatalk

WTF???!!! Damn that is a big loss. RIP Tom... And RIP to all of those lost their lives yesterday at that fucked up deal in Vegas. Sent from my iPhone using Tapatalk

Same here (ep 4 I think), and I too agree with your assessment regarding what we put the Vietnamese people thru... fucked up.

Google maps shows it as being ~3mi from the shop to Two Brothers via the Prairie Path. If the surface is like the PP (asphalt or packed gravel) I'd be ok with it. Loose gravel, particularly in the dark, would be a problem. Exceedingly non-HC, but don't have a mtn bike, fat tire, etc. The bike in pic has 28mm tires on it (meas. 26). Used to ride PP with 23s Sent from my iPhone using Tapatalk

Definitely Jeff. The Werewolf ride looks pretty fun; unfortunately I am supposed to meet some former coworkers that night at a new place in Naperville (Pour House?). If that falls thru, I'd probably be up for it. Is the ride just from the shop to Two Brothers roundhouse, and back? Sent from my iPhone using Tapatalk

Did 3 of my normal path rides around the lake this week (6.2 mi). Only pulled a biscuit boy once when an old(er) guy's dog ran out in front of me. Managed to unclip and stop, but still fell over. No damage... unlike the biscuit [emoji4] Sent from my iPhone using Tapatalk

One of the dy294 testers might help determining the validity of the eBay parts, but yes, eBay and even some commercial suppliers (Dalbani, probably others) should be viewed with suspicion. Sent from my iPhone using Tapatalk

Happy Birthday! Sent from my iPhone using Tapatalk

Happy Birthday! Sent from my iPhone using Tapatalk

Yeah, TDA1541A availability certainly is an issue, particularly when you need to parallel 8 of them or so... And agreed on grain of salt regarding SBAF... Sent from my iPhone using Tapatalk

Anyone heard or looked at ECDesign's Mosaic UV Dac? John Brown has been quite active on DiyA with NOS TDA1541A designs, but apparently decided that the chip had too many design problems to go further than he had. He designed and implemented a discrete Multibit Dac design which has gone thru several iterations. I think they discuss it some on SBAF, but haven't read it. Not sure if this guy and disciples are of the "mystic" variety ala lampizator, etc. though... Sent from my iPhone using Tapatalk

It looked like they have an online order form. Shipping to the US (or not Aus) looked like they have to contact you with the amount. Did you try that route? Sent from my iPhone using Tapatalk

Happy Birthday Jim! Sent from my iPhone using Tapatalk

Oh, you didn't have the foresight to use a 5-pin XLR on your SS Dynalo, so you could make an SE adapter for it? Me either

If I understand an integrator correctly, and opamps, the opamp is always trying to make its inputs equal. Since the offset is presented on the neg input of the opamp, it will be correcting in the opposite direction to the offset. When I do offset measurements on one of these amps, I've never seen the servo try to go the wrong way... Sent from my iPhone using Tapatalk

Happy Birthday Stretch!

There are so many things wrong with what is in that pic... what a fucked up build! Angle bracket appears to be shorting the green resistor to the fight for starters. Attention to detail is a prerequisite for building this kind of equipment.

Happy Birthday! Sent from my iPhone using Tapatalk

Cool! What did you use for the splitter? Curious as to why you went with the Focals instead of something like Mr. Speakers Aeons? Those seem more interesting to me personally...

Some of the tube pins look a bit devoid of solder. Looks like some flux there as well, probably clean it good. Sent from my iPhone using Tapatalk

Thanks for posting this Dusty! I took a look and liked it... I've liked Danny Elfman/Boingo but hadn't really ever listened to anything other than Dead Man's Party and Insanity. Damn tight band! I also found and liked this clip of a shorter concert (MTV?).

Not sure which version is for TKD... better confirm with Kerry though looking at the Gerbers would be easy to tell also. TKD = 3 pins per row; Alpha is 4 per row. Sent from my iPhone using Tapatalk