how can i increase sound in circuit Opic and opa alice

[amir hossain]

hi, I had a bm 800 mic and a 15 dollars phantom power.

i saw opic circuit and made a opic curcuit on vero board with a jli2555b capsule

but it's sound is very low

i can not buy an audio inface right now, because that costs more than 100 dollars. i already bought opa1642 and jli2555b capsule

is there anyway to increase sound 20 dB in that circuit

 

[pasarski]

To what are you plugging it in?

 

[amir hossain]

To what are you plugging it in?

sometime in laptop but mostly in my phone in 3.5mm jack

 

[Khron]

With maybe 3-5V powering the mic, you won't be getting much (level) out of it anyway, I'm afraid...

 

[ccaudle]

sometime in laptop but mostly in my phone in 3.5mm jack

Single sided OPIC, or symmetric output OPIC?

How is the output from the phantom power supply wired to the 3.5mm jack?