Basic op-amp audio amplifier

Thread Starter

dingari

Joined Jan 25, 2014
10
Hello, I've got a really basic circuit set up with an RC4558P op-amp (http://www.ti.com/lit/ds/symlink/rc4558.pdf). But it does not work. I've attached pics of my circuit diagram along with my breadboard setup. Could anyone shed some light on what I'm doing wrong?

I know the op-amp IC is functional since the voltage follower circuit I set up for virtual ground works.

I'm using a mono plug for input from my phone and a stereo plug for output (just one channel). Both plugs and op-amp salvaged from an old guitar amp.
 

Attachments

Thread Starter

dingari

Joined Jan 25, 2014
10
I was testing with my HD-202 headphones. But I have figured out that my 6.35" jacks were wrongly wired. Will post back as soon as I fix that, with results.

EDIT: it works, silly me :/ thanks anyway
 
Last edited:

Thread Starter

dingari

Joined Jan 25, 2014
10
I figure I shall just ask here instead of creating a new thread.

Is there need for a voltage follower when powering the op-amp off two 9V batteries?
 

Attachments

Top