Pars

In the 4th pic, the TO220 C4686 in the center doesn't look like it is soldered. Soldering on some of the radial 100K resistors looks suspect also.

I just recall the wet tantalums back in the '80s would blow'd up real good, bubba And start on fire, with silver shit coming out of them. Generated a distrust in them, to say the least.

Big enough tip on your iron (3.2mm is what I have) and a good soldersucker, something like this Edsyn Soldapullt I got mine at Frys.

I've noticed that the BOM for this, as well as for some of the KGSSHV Carbon stuff, uses large value tantalum caps (47uf/25V), for which there are also ceramic MLCC X7R alternatives available. Any reason for using the tantalums as it would seem that the ceramics would have advantages, price being one of them? For example the tantalum 47uf 25V 581-TAP476K025CCS @$3.13 could be replaced with a Murata 81-RDEC71E476MWK1C3B @$2.13 MLCC ceramic. Just curious...

Happy Birthday!

Happy Birthday!

The input wiring is more susceptible to noise than the output wiring as the signal levels are lower. Having the RK50 at the rear keeps the input wiring shorter, so theoretically should be better. Mouser does have cable hold downs like you pictured. http://www.mouser.com/Search/Refine.aspx?Keyword=644-CCH12-S10-M

Happy Birthday Jim!

Could you use something like a dental pick in the screw holes to pry behind the driver frame? You can usually pick these up cheap at hardware stores like Ace, etc.

RIP Yogi. What a great one!

Those look very nice. Now wrap them back up so you can open them later in the week to duplicate the Christmas-like atmosphere...

You can also get Panasonic FM or FR with the right footprint as well

I've tried this a couple of times (R+C across the secondary), but have never tried to measure it. 330 ohms and 0.022uf. See John Swenson's posts here: http://www.diyhifi.org/forums/viewtopic.php?f=15&t=1957&hilit=transformer+ringing

Happy Birthday Stretch!

Happy belated birthday!

Never tried using either a cordless drill or my drill press to tap holes. Any links to how you do this? I always figured it was a quick route to broken taps... I had a couple on my puter. One seems to be lil knights...

Got mine as well. Thanks for the great job handling this group buy Michael!

Happy Birthday!

Those are pretty reasonable compared to US prices, and the fact that you can't find the 4 gang TKD pots in the US. They do have the 10K and 20K as well.

Nice build samsie! Even if the sinks are too small. Where did you come up with that case? Also, I see TKD... is that a CP2500 or the smaller CP601? And where did you source it from?

No problem here, and thanks for all of your efforts!

As far as transformer for these things, if I wanted to build one up to power a multiamp, and configured for +/- 20V output, would a 2 x 23VAC transformer be too high? Just thinking of stuff I have laying around without buying a new trafo. If I did use this, obviously there is going to be some voltage leftover to dump and this will cause some heat... anything I would need to be aware of here?

Figured that problem out. The New Content mode works as a real time filter, so all I need to do is hit the back button in the browser to go back to New Content, with the previous thread I was in now filtered out. However, there is a related but different problem when using the page buttons which is really a bug. When I have more than 1 page of New Content, trying to go back to the 1st page of content usually results in the above error message.

Happy Birthday Jack!

Do it yourself?