So my smartphone (Motorola Atrix MB860) isn't loud enough to drive my big headphones.  It's barely even loud enough to drive in-ear-buds at max volume on the subway.  And I'm no audiophile/connoisseur, but I'm pretty sure the opamp they used in the Atrix is pretty crappy.  If I think that it...

Every time I suspend, power off, or turn on my PC, my speakers go POP BANG POP, sometimes loud enough to scare my cats outta the room, depending on where I left the volume knob.  I'm using a Sound Blaster Audigy and the regular old analog line out to my Pioneer amp and KLH tower speakers.  But I...

So I've got this efficient 150w amp, and these giant towering black monoliths that are KLH speakers; they're good enough for me!  But every time I turn on or off my computer, the speakers make a loud "pop-click-pop" noise, that's loud enough to scare my cats out of the room.  It is obviously the...

A long time ago, I once had a working CMoy.  Then it broke.  This is the 10th time I have tried to rebuild it (same parts, new PCB).  Either it makes this awful clicking noise 3 times per second, or I get the same volume that the DAP is putting out itself, or I get horrible distortion with the...

So I'm migrating to a new room that is finally big enough for my giant KLH AV5001 350w speakers, and I'm trying to decide which amplifier to use. I am lucky enough to be the owner of 3 rather decent units that were given to me as friends upgraded their home stereo systems. The source audio is...

So I just got my Cmoy circuit working on a solderless breadboard, and I'm ready to transfer it to my perfboard. It is the plain and simple "pad-per-hole" or "donutboard" perfboard, similar to the one seen here: Problem is, I can't seem to wrap my head around how to best layout the components...

I'm trying to re-build my old CMoy from a long time ago. For now, I've got it set up on a breadboard to make sure it works before I actually solder anything. But it doesn't make the music any louder, its pretty much the same volume, but extremely distorted. I'm using two 9v batteries, 4.7k...

I was given these ancient cans as a gift, but they sounded pretty crappy. One of my KSC-75's wires ripped out of the headphone, so I decided to wire them to the cans shown in the picture above. They function, but they have significantly lost bass. I was hoping I would be able to get them to...

I've had my pair of KSC-75s for a while (long enough that the ear part snaps off easily), and I accidentally pulled on the cord too hard and broke one of the channels' wires. I opened it up, and resoldered it, but it flickered on and off. I concluded that this was because one of the wires...

I recently got a hold of some HUGE headphones for free. They don't sound too great, but I can't find any info on the headphones other than what it says on the side: Quote: FUTURA Dynamic Stereo Headphones Model 3126 8 ohms Japan Does anyone have any info on the headphones, or...

I've heard great things about the KSC-75 and KSC-35 headphones by Koss, but it seems impossible to get them in Canada. I'm looking for cheap, $20-30 headphones for portable use, and I've heard great things about these headphones. I'm in Toronto, none of the big stores sell them in-store, and...

Anyone tried these beta chips? I ordered two samples from AD, at $15 there twice the price of the AR and ARZ. I'll put them on some adapters and post the results.

I just got some proper SOIC adapters, and i soldered an OPA2227U onto it. I plugged it into my amp, and i thought it didnt work. Then i turned the volume up all the way, and it was playing moderately quietly, while the other side was blasting away. This is the fourth one I've soldered, the other...

Does anyone know of a way to clean a soldering iron to death? I'm switching to lead-free-everything, and I want to get all the lead off the tip. "How much it matters"-aside, anyone know how I can be guaranteed it is clean?

Has anyone done any tests between cables using an oscilloscope or software analyzer to see if there really is an audible difference between cables?

Oh yes

I finally got satisfied with an amp and made a PCB and cased it in an altoids tin (in the builds thread). I'm really good at skimping and finding deals, so the whole thing cost me about $20 CAD. There's no real change in sound quality with it, and its a little unbalanced, but it sounds cool and...

Single DIP to Dual DIP: SOIC to DIP: I've made the PCBs for these two, they should be accurate but I would appreciate it if someone went over them. All you need is a (preferably nice) laser printer, some photo paper, an iron, some etching fluid, and a drill or drill press, and you'll...

It is one of my favorite albums, but it is like the engineer was TRYING to make it sound terrible with all the over compression and digital clipping. Is there anything I can do with, say, Audition to clean up the clipping?

I've tried making DIP adapters for the OPA2227U chips, both of which don't work when rolled into my circuit (where the OPA2227P works). I don't have any sockets left to try another one right now, but does anyone have some advice other than the pricey BD adapters?

I'm looking to buy a pair of KSC75s, but I can't find a place that ships to Canada for a decent price. One place charged $9 for the headphones, $30 for shipping!

Does anyone know how I should build a passive tilt control? Basically a pot that rolls towards bass or treble. I've seen a couple schematics, but they're powered amps and thus very big. I was thinking a capacitor, a big inductor, and a pot between the two, but if I'm not mistaken thats how a wah...

I tried compressing some of my songs with VBR, here's the settings i used: lame in.wav out.mp3 -V2 --vbr-new -q0 --lowpass 19.7 --cwlimit 10.7 -b96 --athaa-sensitivity 1 I found them on a website. The cymbals were muddy, and the quiet parts were compressed very poorly. Apparently that is...

As you can see, I'm not very good at drilling. I'm using a dremel with the largest bit i have, its not making any progress other than a dimple, so i up the speed, and the thing explodes. Anyone have any handy drilling tips so I can avoid accidents like these?

Does anyone have a guide or any suggestions on how I should make a lineout/optical out on my Generibrand PCDP?