I will try to attend, but cant promise anything with my schedule as an engineering student . I had alot of fun at the meet at the hotel in charlotte last year so I figure this could be good.   If everything works out ill bring my: Akg K601 Denon D2K, Moon audio black dragon cable, Lawton...

Last night, I ended up picking some Mirage OM6 speakers up off craigslist for a great price for a floorstanding 2.0 setup. These will be going in my apartment in about a month once I move in. The living room floor is carpeted. It might be worth considering that the speakers are fairly unique...

There's a pair of these up on my craigslist for 450, I googled around some and I couldn't find much except a stereophile review, it seems these were 3000/pair from 1997-2006 when they were made, and I figured they were atleast looking in to since I've been starting to look into a 2 channel set.

I would definitely say some heavily modified denons are worth throwing in the mix here, stock the d2k/5k(same drivers) are good headphones, but are very V shaped. If you do the full dampening mods, wood cups and stuff pads they improve drastically.

Quote: It is the A3, the metal housing of the switches is right against the front panel. I'll check resistances over the weekend, my weeks have become consumed by school work.  

I haven't had time to change around any wiring yet(being an engineering student kinda sucks sometimes...), but I did have time to sketch up how the volume control is wired in. Circles are RCA jacks.

I didn't tin any of the leads, except the signal output wires. I did remember to clean them though(It was only 2 wires).   The jacks should be insulted, they are the neutrik D series jacks: http://www.parts-express.com/pe/showdetl.cfm?Partnumber=092-232   The shields are just floating, I...

I messed with the wiring some with some interesting results. Before I messed with the wiring, I hooked the amps output up to a mixer I have just for fun. The hum was lighting up the -24 dB light on the mixer on the right channel, also when I turned the amp on and off, the left channel would...

I'd say more of a hum for sure. I have the star ground setup with all the wires connected to a terminal block. I tried both wiring options from the cavalli website, and still got hum.

Sort of a strange update, I actually reflowed a bunch of joints on the problem board before I left to go back to school. After I measured those voltages last night, I figured I might as well check the DC offset. Well, to my surprise it had actually dropped to 0 mV, as same as the good board was...

Sorry for the delay, school arose as a delay again.   Q11B(Ground was placed on pad 2) pad 2 to pad 3 = 18.0 V pad 2 to pad 1 = 20.6 V   Q10B(Ground was placed on pad 2) pad 2 to pad 3 = -16.5 V pad 2 to pad 1 = -19.7 V   Those measurements are from the problem board, I can...

I can't seem to get a decent picture of the underside...but heres my attempt: The flash would either reflect too much off of the pcb, or it would end up too dark with no flash, so my apologies in advance about the picture quality.   The MOSFETs are correct, as well as the...

V- and V+ appear to be correct, here is a close up of the problem board(the one closest to the AC inlet in the big picture):   Also, I'll work on changing that ground wiring around, thanks for the tip!

Alright, found a better camera.   Voltage on the problem board for the LED, from LED- to G measures about -200 mV, and LED+ to ground measures about 250 mV.   Voltage coming off PSU is +27 and -27

Sorry for the poor quality...phone camera.

Well partway through the wiring I decided to fire it up for kick and giggles.   I have a 2 stage power switch installed, so I let the tubes heat for a minute or two before turning the amp on. When I turned the switch to both on, the board I just finished light up, at that point I remember I...

I just installed the 2 missing components on the second board, after I wire everything up completely I'll take a couple pictures.

I gotta find a multimeter since I conviently left mine back at school...but as for IC1, it is currently oriented(Tube is bottom center for reference), with the dot on the op amp in the lower right.  

I'm off at college now...couldn't bring the amp along . I will be back for labor day weekend, but I've had to put the project on hold until then. Thank you so much for your help so far, it means alot of have some sort of support line.    

Quote: That's where I measured from. It was the voltages I said above, around 3.5ish.  

I haven't had a chance to look at it yet, I've been packing to go move back for college.   I wouldn't really recommend this for a first project, I started with a minimax kit(great for first ambitious DIY'ers), then did an opus dac, then this.

I'll get some pictures tomorrow, but I am following the Cavalli instructions I pretty much get to this part(Rail supply reads around 27 VDC, tube heater output is 6.30VDC) : Amp Power Up Look for smoke. If there is none, proceed. Wait for the output DC to settle into the low mV range. If...

Well my amp is mostly done, but full of all sorts of problems.   The tube heater circuit outputs correctly, and the tubes heat. The PSU outputs around +-27V. When I power the amp up dc offset jumps too 3.6V, and settles to around 3.0V. When I initially checked the bias, it read at 60 mv, and...

After starting to play some fps's again after building my new dac(dual mono opus), I realized that while it sounds much better than my zero dac, its positional sound in games is pretty poor. I was wondering if anyone had ever run an External DAC, and an internal sound card such as an x-fi or...

I'll go with the 1/4 inchers just to be safe, thanks guys!