Ceramic mic, 8 ohm speaker, 9v, in need of an amp circuit

[TechDude]

Well if i use this preamp with the circuit you provided before it should work right?

 

[audioguru]

We don't know what is the sensitivity of your obsolete ceramic mic. So we don't know how loud you need to scream at it.

A FET preamp (used for a guitar) is a much simpler circuit and can have some gain.

 

[TechDude]

So i could use this FET preamp and it would increase my decibels considerably?

 

[audioguru]

A FET preamp has a max gain of about 20 which is 26 decibels.
Here is a FET preamp with an adjustable gain control:

 

[TechDude]

I'll try this one. I'll tell you what happens. But there is only one wire leading to output... would I connect the other wire to the ground?

 

[Zerotology]

Wow. This is a lot of help for what seems to be an unlikely project anyone would ever find useful. LOL. I thought people were going to call him out for posting a phoney (Pardon the pun ) , project.

But here everyone's taking him seriously!!!

LMAO

 

[audioguru]

The grounds must be connected together for the signal and for the 0V of the power supply.

 

[TechDude]

Ok. Thanks for all the help guru and chippie.