Hi yas....
i managed to totally mullar a go at the project once allready...
my own fault for taking parts advice from the chap in maplins.
never again will that idea go thru my mind
so im starting from scratch again and would like to make a decent job of it.
i have a new PCB on route (UK seller on ebay) afraid to say my de-soildering skills suck and for the sake of a tenner id rather start with a new PCB.
i do however have a few questions (cheers in advance Jason)
the set up is simple to take a feed from my PC's onboard soundcard and drive a set of Senn HD500's
i do suffer from a little deafness so im looking to get some decent bass out of this little amp.
so if i can ask...
1. is it going to be better to use a 12V +/- Dual PSU or will i get the same performance from just using a 9V DC PSU in place of a battery pack ?
2. if it is better, did you make a post on how to build a Dual PSU jason ? if not are they cheap to purchase ? (farnell code if one exsists?)
3. i do suffer a little deafness and im concerned that +2 Gain might not be enuf with the HD500's (are these high impedance headphones ?) so im thinking i might need to adjust the resisters to get extra gain.
what is a sensible ammount of gain ?
if i suggest +4 Gain then the resistors would be
R1: 10
R2: 30k
R3: 10k
R4: 10k
R5: 10
R6: 30k
R7: 10k
R8: 10k
G = 1 + 30/10 = 4 ?
or is +4 gain too much for headphones ?
cheers in advance.....
gonna take a little time and car over this project, im not the most skilled soilder, but i do like little projects of this type.
Cheers.....
