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DIYHiFi.org • View topic - Recommend me some coax and BNC connectors Some possibly helpful stuff here. I know I have seen the paralleled 74HC04s before.

Happy Birthday Reks!

Happy Birthday!

Thanks. I did it manually after doing some googling and had forgotten about Doug's scripts . I'll take a look at these when I get home later this week. I settled on 192k for car use and seems OK. It woud be nice not to have to store multiple versions; just lossless then downgrade when putting them on the ipod.

Similar so I just tacked on to this thread. Sorry for being clueless when it comes to itunes and ipods. If I rip CDs using Max as ALACs and get them added to my itunes library, is there anyway that I can copy these over to my ipod but encoded in a lossy format to save space? And recommended format or bitrate? Mostly rock, so 160kbps? higher?

I know the B&K that I have is tracking (i.e., channel B tracks channel A) and they are isolated, so to do a +/- supply you patch the + of channel A to the - of channel B. Channel A is then the - supply and B the +. I don't think it will do 0.5A, don't think it has current limiting, and only does 25V on each (or is that 20?). Something close does exist though. I would look at the HP dual supplies if it were me. This one that I linked previously appears to meet your needs: http://cgi.ebay.com/Hewlett-Packard-HP-6228B-Dual-DC-Power-Supply-w-manual_W0QQitemZ360214245044QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item53de712eb4

Happy Birthday!

Happy Birthday!

Happy unBirthday Ken!

Wouldn't a standard wall outlet work as well?

Was this the addition of a pair of diodes between the VAS stage BJTs, and reduction of the resistor from 510 to 215 ohms? That's the only change I am aware of. This amp has that, but didn't take it as far as was meant by bonding the diodes to the output stage transistors. I could never hear a difference in this mod.

Yeah, they made no attempt to put the singles next to each other, which really would have been pretty easy to do. The PSU in the Gilmore Ref is the original tracking design with the OPA548s, so would be better than what is in this. This appears to be a simple LM317/337 PSU. These guys claim they switched transistors... wonder what they used and if it is an improvement over the Toshiba 2SA1015/2SC1815 used by the original design? Really can't think of many areas to "tweak" one of these designs. Certainly not to the level of "puffery" they allude to. Still, for the price, not bad. Hope the PCB doesn't suck like some "blue" boards I have worked on. Poor copper bonding to the substrate in those.

My brother asked me what I thought about using a Mac Mini as a htpc. Since I've never done this, I thought I would ask here. I know some of you use these as music servers. Any tips, recommendations, etc.? Thanks in advance

Happy Birthday dood!

Happy Birthday!

Fastener Express has them in black oxide stainless down to 1-72 thread, as well as metric. Bolt Depot is another place I look, but they don't carry black oxide (that I found).

Bryan: Congrats, and enjoy your break! Colin: That sucks...

I enjoyed that episode also more than the vast majority of them.

Happy (or is it unhappy??) unbirthday! Enjoy Ken!

I've got some 200R RN60s if those would work.

Of course you can already start firing it up before you get all the parts in... where's the fun in soldering circuits that aren't on?

I for one do not see how this could work fro a volume control... it looks like it just acts as a variable resistor between the two "channels", even if those are the same signal 180 degrees out of phase? I could also just be dense

That kit looks OK, but doesn't have meters (though I don't know that I trust them anyhow), and isn't tracking. You might take a look at Circuit Specialists and also wait to see if luvdunhill or cetoole or nate or anyone else has recommendations. I seem to recall someone pointing out a new bench supply that looked pretty good, but don't recall what it was. Circuit Specialists Inc. - Bench Top Power Supplies

Sorry, hadn't noticed that. Here's a single HP HEWLETT hp PACKARD DC POWER SUPPLY BENCH SERIES 6218A - eBay (item 300374779932 end time Dec-12-09 16:48:33 PST) A bit outside your budget: Hewlett Packard HP 6228B Dual DC Power Supply w/manual - eBay (item 360214245044 end time Dec-10-09 10:30:57 PST) Lambda: Lambda LPD-421A-FM Dual 0-20V 1.7A DC Power Supply - eBay (item 360214381205 end time Dec-10-09 18:06:48 PST) Another HP: HP 6205B Dual DC Power Supply..... - eBay (item 110468187695 end time Dec-16-09 10:17:12 PST)

Take a look at ebay for starters. I have a dual supply B&K that is OK (and was pretty cheap). I would recommend a dual output supply because many tasks require +/-V. Current limiting would be nice, but for $50 not likely. Here's an HP that although it seems to need some work, is advertised as working, and not one of these "I'm a test equipment vendor, but this is sold as is cuz I have no way of testing it". HP 6253A Dual DC Power Supply 0-20V 0-3 Amp - eBay (item 280435088410 end time Dec-13-09 18:00:43 PST) Drawback is only up to 20V. You can put these in series to get 40V though.