i don't know if anyone else has had this problem, but i have an audigy sound card, and whenever i listen to music it has this anoying echo effect that sometimes shows up. its not there all the time, just when i don't want it there. I can't seem to get rid of it, i've looked in all the sound...

i did, i've triple checked it

i might be wrong, but i'm pretty sure that, unless you want to buy resistors in bulk, you can't get metal film resistors at either place. I recomend getting polyester film type capacitors, thats what i got, and i'm verry happy with the sound. a cmoy isn't going to vary too much with the quality...

unfortunately, when i reconnect the pot, the same thing happens again. I COULD live without the pot, but its there and i would like to use it. i bought a linear pot because i found this http://sound.westhost.com/project01.htm a website talking about building a better volume controll, with...

don't worry about it... i think i got it, and i buypassed the ground, and it worked!!! both sides were equal volume, thank you verry verry much [so]hai YES I'M FINISHED!!! after i figure out how to reconnect the pot...

theres more wires in the final, that was a version before i connected all the switches and the pot and mini jacks. the V- and V+ of the op amps reads approx. 18 V, (i've got two 9V batteries connected) i'm not sure what you mean... i THINK you want me to bypass the pot with wires; tell me...

Quote: Originally posted by jeffreyj It no longer sounds like there is a problem with the amp; rather, I'd check the headphones! its not the headphones, i've checked...

heres two pictures. thanks for the help [edit] picture size

number one i'm using two single channel op amps, 123's i believe, also i've already checked connections, they are correct ground is connected to ground, right to right and left to left. i've looked over the board looking for unsymetrical wiring but can't find any... i have a suspicion (just...

its not that, only one channel is really quite, also, i've run a knife between all places that there could be a solder bridge.

bump

how... i built them on the same circuit board.... i've tries using the on/off switch for the crossfeed but it doesn't do anything.

anone else know how to get around the problem of LOTS of wires sticking out of their board? i know mine has tons of them and i don't know how to clean around them

i just finished building my CMOY, and i can't seem to figure out whats wrong: when i listen with my headphone plug in all the way one ear is loud, but the other is VERY quiet, however, when i put the plug in so that the ground of the socket is connected to the right chanel of the plug, and the...

so other than looks, scrubbing it with alchohol doesn't do anything?

i've read alot of posts about people suggesting the scrub down of their PC boards with pure alchohol to clean them after assembly, i was curious if this was necessary or if it is a thing to do if you could, but the project would work fine with or without it. I know mine has ALOT of wires comming...

what glue did you use? i used model glue for plastic models but it fell out (my case is medal), i've got a REALLY small (3mm) LED so those really thick glues would be difficult to work with thanks

i just built one and i have almost NO electrical knowlege, a high school junior all i know about electricity i learned from one book and 2 days of class notes on resistor s and capacitors in physics, and i didn't even use anything i learned there. You don't need any knowlege however i am really...

let the builder give out the schematic, tangent willingly gives out the schematics for his META amp, and thats his choice, untill headroom decides to give out the schematic for their airhead, or total airhead amps, i recomend you don't reverse engineer it and publish it, if you want to reverse...

other than that the HFI's are from what i have heard, the best, or my most likely buy thanks guys

has anyone used the ER 6's i'm dying to know if they are worth the buy, cause i would really like that isolation, but i can't afford the ER4's. someone do tell

the ultrasone HFI-650 seems to be the thing to get, those who got them say they are great, however where can i get them thats reputable, i don't want to be buying from this hole in the wall dealer who will take my 165 bucks and run. anyone know of anyplace to get them? and how much are they...

i am looking for CLOSED (must be closed, semi closed don't work) headphones for under 150 dollars. these are some i'm considering: senn hd280's the ety ER6's tell me what you think of these choices, are they good for portable listening, and which are better. thanks

okay, now to futher the question: the whole theory of impedance is that you want a large output impedance, and a small input impedance so that most of the signal is dropped across the speakers. however, with large impedance headphones this seems counter productive, you don't get as much of...

what is the point of making extreemly high impedence headphones (such as the hd600's) from what i have heard, there is no difference, the ER4p and ER4s are the same headphone except the 4p's have less impedence, this doesn't make sense to me, please explain. thanks