I'm working on a audio preamp that does not work all i hear is buzzing please take a look.

 

There are many things wrong, most notably, no feedback. Please google "op amp design" or look at applications within a datasheet.

 

The opamp without negative feedback has a voltage gain of about 200,000 to 1 million.
Its ouput is over-amplified mains hum radiation that is picked up by the input wires.

Your two 150 ohm input resistors are in parallel and will short whatever drives them.

What is the input from? An electret microphone?

 

There are many things wrong, most notably, no feedback. Please google "op amp design" or look at applications within a datasheet.

It really depends on the amp, really. The LM386 has an internal feedback loop with a gain set to 20. Nevertheless if you are using other kind of amplifier, it might need a negative feedback loop. It will need a feedback network for sure if the IC is an operational amplifier.

Please, could you specify the amp you are using?

 

An LM386 is a power amplifier. It is not an opamp and it is not a preamp.

 

The amp is a LM741CN

 

This is a link into the AAS Ebook section on op amps - http://www.allaboutcircuits.com/vol_3/chpt_8/3.html. Spend some time reading up on the subject, and your next attempt will be a lot more likely to work.

 

True there are many issues with the circuit you attached. what type of audio preamp are you trying to build? Microphone preamp? Dynamic or hi-Z mic? line level or bnallanced level preamp?
This will help determine the best circuit for the job...

 

It is a mic Preamp

 

You don't have a mic preamp.
Instead, you have an opamp without any negative feedback so its AC and DC gain are way too high.
The inputs are shorted together with two 150 ohm resistors in parallel.
The input is not biased correctly.

If the mic is an electret type then it needs to be biased.

 

You don't have a mic preamp.
Instead, you have an opamp without any negative feedback so its AC and DC gain are way too high.
The inputs are shorted together with two 150 ohm resistors in parallel.
The input is not biased correctly.

If the mic is an electret type then it needs to be biased.

who would you di it?

 

I mean how would you do it?!!!

 

Did you read the link?!? (???!!!?!???!?!!!???!?!?!?!??!??!!!?............ WTF)

 

You need to learn about opamps.
The link tells you all about opamps.