Pars

Awesome... awaiting the unveiling of your first headphone amp... the Dhik Head

Interesting. Yes, mine does behave rather strangely. From 2 to c (wiper to ground), it jumps up to 1K or so with very little rotation, then to 8k and then to 15-19k for much of the rotation, sometimes going down. Once past 3/4 rotation or so, it increases fairly linearly to max of 44k (50k pot). On the input (1) to wiper, it does actually go above the max pot value (to 55k was the highest I saw). I remember Morsel on hf said these things work somewhat like stepped attenuators... They sure work and sound good for a pot though... think of the beautiful beautiful music... <<ducks and runs like hell>>

Hehe. Great job Naaman! And congrats Steve!

Hmm, I'll have to ohm my 50k out tonight per your post at the linked thread. I don't recall seeing anything unusual in mine, and the values you showed don't seem to make sense. I actually liked their curve vs. an Alps.

You mean like the 2P2500/2511 pots? Interesting, I wonder why? Electrically they should be indentical to an Alps RK27.

Happy Birthday!

If you can find them (and for a reasonable price), the Trompeter wrench crimp connectors are supposed to be one of the best BNCs available. http://www.newark.com/trompeter-electronics/upl20-5/rf-coaxial-bnc-plug-str-75ohm-crimp/dp/90B4196?in_merch=Popular%20RF/Coaxials They've apparently raised their pricing...

Happy Birthday Jeff!

I actually kind of like Schitt; kind of self-deprecating. Golden Ear just sound pretentious as fuck to me. YMMV

Really stupid name though... GoldenEar? Really?

^ What Steve said...

XLRs aren't 110 ohms either.

As Craig shows clearly, you really need to think of S/PDIF as a system. Changing out only the cable is probably a crap shoot. The transmit and receive circuitry/jacks and the cable make up the system. It is not a given that all 3 are done correctly...

Happy Birthday!

Looks like you guys had a blast... wish I could have made it. And Mike, looking good, glad your recovery is progressing well!

Nice! We need pics of the CD player

Your measurements or theirs? I know you don't like Jocko much (and I'm not sure what I think), but SC was one that he always said lied thru their teeth on their datasheets... http://www.diyhifi.org/forums/viewtopic.php?f=2&t=284&p=5709&hilit=Scientific+Conversions#p5709

PCM1702s and IIRC 1704s are 16 pin (DIP), but those appear to be SMD... As for pulse transformers, did you think about the Newava S22083 or 22160, which seem to be the ones that Jocko recommends? http://search.digikey.com/us/en/products/S22160/470-1004-ND/555462 Not silly $ either I had noticed what you did regarding most pfeu pfeu BNC connectors being rhodium (insert material of your choice here) plated 50 ohm connectors...

Happy Birthday!

I wouldn't be a bit surprised if the SLA was noisier than a sigma11 or other well designed AC PSU.

I believe Birgir claimed there was a lot of back-EMF from these. Don't recall whether Kevin has said what he thinks or not... Don't forget to throw an O2 in there also

When they do large downsizings, its always in doubt.

Happy Birthday!

I'll bet it has a nicer case

You could always breadboard the amp on a suitable piece of mdf or plywood and see (hear) what it acts like with the layout as you would need it in the case. Won't tell you about heat, but should tell you if the xfrmr is going to be a problem with noise, and would allow you to play with orientation.