Help making a simple audio amp

[evilkitty]

I have a pair of old JBL 145SSAT Speakers
I made a cable to use them with a 3.5mm jack
I have it hooked to a low profile dell pc
I think it needs more amperage to preform optimally
How can i use a USB port to get more power to it?

I have some 2n2222a, 2n3906 and tip120 (NPN Darlington) transistors to work with as well as some diodes and resistors
I also have a few caps i can use to smooth out any supply fluxions

I am not trying to make a external volume control, just something so i can use the computers volume control to adjust it, i just want enough juice to drive the speakers properly

[madan1]

Re: Help making a simple audio amp

Get one of those http://www.dx.com/p/pam8403-dc-5v-cl...e-green-347324

[evilkitty]

Re: Help making a simple audio amp

Thanks, i'll give one of those a try

[evilkitty]

Re: Help making a simple audio amp

This worked out great, though that is only when using some SFF dell box, when i hook it up to a decent desktop i get a lot of static and noise from doing anything like moving the mouse or dragging windows around, any good way to solve that or should i just use a filtered power adapter instead of the system's USB ports

[madan1]

Re: Help making a simple audio amp

This worked out great, though that is only when using some SFF dell box, when i hook it up to a decent desktop i get a lot of static and noise from doing anything like moving the mouse or dragging windows around, any good way to solve that or should i just use a filtered power adapter instead of the system's USB ports

get a dedicated sound card or an external usb sound card