Quote: Originally posted by rickcr42 disconnect the psu from the amp and connect an LED across each polarity (with the proper resistor of course) measure from common to each polarity across the leds and see if the supply is putting out the correct voltage Rick, did you mean to...

The crackle occurs a few seconds after I turn the power supply on. This is without the music turned on, but with everything hooked up.

Solved one problem, now I have another. I am using a rickcr42 dual-mono power supply (LM317 I think, it's been a while) and didn't have the second power supply hooked up. I was running both audio channels from one power supply channel. Oops. Unfortunately, the second power supply channel...

Help me understand here: I realize that the metal tab is an electrode, but if it's screwed to a 2"x2" heatsink that isn't touching anything, how would that effect anything? I have some insulation I can try, but I don't realize how a hunk of metal sitting in the air attached to that electrode...

Quote: Originally posted by Tomo Just for a record, mosfet's heatsink lug is electronically active. Which means, you have to be very careful to isolate the heatsink from mosfet "stones." The MOSFET has to be isolated from the heat sink even if the heatsink's not touching anything?

I've got my Szekeres amplifier on breadboard right now. It's the standard configuration except that I do not have the diodes in place. C2 is 2200uF. R3 is about 500k. I am using Rg = 220 with the leads of the resistor right next to the gate. The amplifier sounds fine for just over one minute...

The reason I ask is that with a 14.2V supply, I had R3 up around 400k and Vds was still around 7.8V. I wanted to learn how I could figure out if that is way off by myself, rather than just ask the board.

I'm working on the Szekeres amp right now and I'm trying to determine a good guess for how much resistance I should dial in for R3 so that Vds is half my power supply voltage. To do this, I figured I could dust off the circuits book I never thought I'd use and plug in some values for the DC...

I came on a few days ago to private message rickcr42 to ask him a few things about my DIY amp. It was coincidence that I decided to check out what was new in the Headphones forum since I never really browse here anyway -- DIY is my only interest. Anyway, this is pretty humorous!

Quote: Originally posted by wallijonn notice how tooler didn't stay around? 29 after 2 years. My apologies. Girls, cars, and school left me little time for headphones, especially when my current setup suits me just fine. If you think that was a long time ago, wait until I finish...

Use your right foot for braking around town and emergency stops and maneuvers. Skid control would be good to practice in the snow in an empty parking lot. It will be all the "fun" (adrenaline) you need. Just remember to look where you want to be and your hands will naturally pull you out of it.

Was this on a flat field or parking lot with snow and ice and a course made from cones, or was it a short race through some wilderness?

You got to determine exactly what headphones you wanted and only had to pay 15% more? Some of you guys need to get out more.

I have mild tinnitus that, under normal circumstances where I haven't abused my ears, I cannot hear unless it is very quiet. If you have a similar malady and use Etymotic earphones, does the increased isolation combined with the mild tinnitus make listening to music annoying?

The people who developed the PCB and circuit design deserve a lot of credit for their fantastic accomplishment. I admire the work. Diluting the name might change this. But at the end of the day, why not call it a "META42-clone" and go have a beer? Let's not start a flame war worse than...

It amazes me that I have never had a problem with shipping products from any company in the 3-4 years I've been ordering things over the internet.

Quote: Originally posted by andrzejpw He brought them to high school programming class Here's your problem. Most high school kids are tools. Quote: Originally posted by grinch she has an ... obsession with louis vitton handbags Ouch!!

Thanks for the information on those webcrawlers. I've been looking for something like that to use on an unrelated site. The picture of the original Altoids amp in the cmoy amplifier article is what inspired me to get into DIY and headphones. I made backups of all the projects I might do in...

Thanks. I'll check these out. There seem to be a lot of military and political themes. Is there anything more general -- like inspiriation in human beings?

Classical experts -- got any recommendations for works that remind you of heroism? I'd like to try some out at the local library, so nothing too obscure. Thanks.

Hell for me would be reading all that crap. Back to rockin' out!

Womb envy. Hahahah

Yes they're indie/emo, a little bit softer and melancholy than most I think. They're trying to go more mainstream; not sure how their new album sounds.

Yeah, I'm sure a lot of people have owned headphones for 5 or 10 years, but the point of the question was to determine if anyone could control themselves for more than 2 or 3 years without buying a new pair of headphones since the time they discovered HeadWize/Head-Fi. I'll admit I've built too...

I bought my Grado SR80s 20 months ago and I still enjoy them. I doubt I'll buy new headphones for a while. Anyone else found a nice headphone and stuck with it?