It's strange, I just rebuilt the circuit, (not sure what I had wrong before but this is always a good way to get a feel for the circuit) and this time the DC offset starts in a reasonable position (about 11mV for the right channel and -12mV for the left.)  However the voltage steadily INCREASES...

So I plugged in the 2k resistors and used two 2ohm resistors in series to get 4ohm. Now on the left channel i'm seeing 150mV DC offset and on the right I see a whopping 3.5V. Obviously something wrong there. I plan to investigate more tonight.

+-6V is even less than the +-9 I had it at and quite a bit less than the +-15 I was looking to use.  (If I remember correctly the LME49860 operates optimally at around this voltage.)  Should I set up some kind of voltage drop between V-/V+ and the transistor V-/V+?  Perhaps I'll need a different...

I guess I should have asked this before, but the resistors in that circuit are 1/4W right?  Just making sure.  Still troubleshooting this circuit when I'm not at work.   EDIT: Some success, today, of a sort.  Educationally speaking, anyway.  I know why those 20ohm resistors are prone to...

Someone will correct me if I am wrong but no increase in capacitance will result in an increased voltage.  

Yes, I had the 20ohm resistor in series with the 1kohm resistor, with the start of the series as V- (as well as the collector of that 2N3904), the midpoint of the series at the base of the 2N3904, and the end of the series at the emitter of the inner 2N3906. EDIT: +-9V smoked that 20ohm...

Well, the power supply is set to +-15V right now as that is where I would like to run the op-amp.  I'll crank down the voltage to +-9v and see what comes of it.  

Well, it's been a little while.  Power supply is still chugging along like a champ and I've finally gotten all the proper parts to make that two stage amplifier you showed me, Avro.   Unfortunately, like before, I'm getting some burning going on.  Oddly only in one channel.  White smoke...

I know Crysis2 seems less intensive right now than Crysis1, but I'm guessing that that is because Crytek has yet to implement DX11.  They are planning to release that as a patch later.  I'm HOPING for some great things from that.  At any rate, I know I went overkill with my computer (the 4.4ghz...

I'm with you there, I prefer full-size cans, always have, but in-ear has its place.  As for a portable rig for her... that shouldn't be too bad, I need more practice soldering anyway.  

LOL I expect her to come to me pretty soon saying they broke.  To be fair she uses them a LOT at work.  I know those SCs don't have a huge production value so I don't give them long.  I just need to find a good pair of IEMs for her to use that aren't going for a fortune.  

I've got my machine running at 4.4ghz on a i7-950.  24/7 stable, tested with multiple burn tests left running for 24 hours each.  GRANTED, as we get closer to summer, I'll have to monitor that, but at 4.4ghz I had maxed around 71C on the hottest core, so hopefully since we'll be running AC I...

Well, Digikey is selling the Muses01 for $75, so yeah... $80 isn't an unreasonable extension after shipping and tax and the odd cap.  The Muses8820 is only being sold in lots of 100 for 4.20 each.  

As Morbid said, I hope you all have a righteously good time.  :)  I figure since I can't make this one, and I REALLY want to attend one at some point, I'll probably set out to organize one in about a year or so.  I even already have a venue.  :)  So I hope this one will be awesome so there will...

Oooo.... Don't tell me that.  I already have previous obligations as it is.  Ah well, not much can be done about it.  

Damn, I wish I had known about this sooner, I'm in Dallas and would have GLADLY driven out to austin for this.  I guess I'll have to wait for the next one.  :(  

OK... I finally got the guts to turn it back on after resoldering in a replacement cap and checking for shorts.  The housing is 100% plastic, but I checked it anyway.  Nothing obvious.  Thing is, that when I turned it on, nothing blew up, but even still, there is no regulation.  In fact, like...

As much as I hate to make myself look any MORE uneducated... The power supply I built that has been working for two weeks is giving me trouble suddenly.   I've been making housing for it from an old VCR, got it all in, hooked it up to the amp it was powering before... and for some reason I...

Hmm...  I guess my limited knowledge is showing again.  higher impedance headphones draw less current, so these 8ohm speakers would suck more current than the deskamp would probably throw at it, right?  Which would overheat the amp, of course.  I hope I got that right.      

Hell, I know I'd make it in a heartbeat, just for the sake of doing it.   No... I lied.  I'd hook it to a CMoy and attempt to blow it.  I'd just try to break it.

Personally, I HATE using 9V batteries, so after I made my first CMoy I immediately launced into making a regulated DC power supply for it... well, that project launced into making an AC->DC regulated power supply which simply would not have happened if not for all of Avro's help.   If you...

I usually order from DigiKey.  I bought those transistors from RS cause they were cheap.  To be honest, I'm glad, too.  After all... I just fried two of them!  lol  I plan to order a full BOM for the amp in about a week or so.  I was just doing this for experimentation and learning on a...

Wow... OK, maybe I'm just rushing too much.  I went to Radioshack and bought a few 2N3906s and a few 2N3904's as well as a bunch of 1k ohm resistors and 10 ohm resistors.   I used 2 10ohm resistors to create the needed 20ohm resistance.  I just skipped the 2ohm resistors, which may well have...

D'oh!  I read that guide, but I see that I got too fixated on how it forces increased output current from the opamp as a side-effect of the biasing.  That was never the main purpose.  Thanks for clearing my head.   As much as I want to run to RadioShack right now to dive into their 2N3904...

Ahh, ok.  Noise created by resistors increases with resistance value, right?  So a 1k resistor will create far less noise than a 15k resistor, right?   Also, it had been my understanding that class A biasing was to force the op-amp to output a near it's rated current 100% of the time.  Since...