Donate to This Project

Your donations help us continue to add new and exciting features. Please consider making a donation

HarmonicaSpace is a subsidiary of Brady Mills Graphics

Harmonica mic build help please!!

Back to the Maintenance, Repair and Customization Room

Tom L
Aug 17, 2018 6:09 PM GMT

Hi everyone,

I’m setting out to make up my first real microphone.

I’m using a SA-18 dymanic module

(Data sheet here)

100-10,000 Hz
2.5 mV/Pa
200 Ohms

I hooked this up to some test leads going straight into an amp and the quality is ok...only down to 100hz but still fine. The level is low however. I had a transformer laying around from a SUPER cheap mic and hooked that up and WHAM....very usable levels indeed.

There are no markings on the transformer whatsoever and I’ll like to reproduce the results in future. I do not have a real understanding of impedance, resistance etc etc...the basic concept and maths have always evaded me, I really am hopeless. Honest. Total mathematical and conceptual “blind spot” here.

Can anyone help by giving an idea of the type of transformer/s I might get hold of to make use of the SA-18 element so I get more reasonable levels for going into an amp and or pedal board? I don’t have a CLUE what I should be looking for in terms of names let alone specs or how those might be presented. I assume it is a small “audio transformer” that I should be looking at? See, told you...clueless!

This is my current set up..


Share |

Comments (0)

Login or Register to Post Comments

Order by Date

© 2009 HarmonicaSpace

Advertise with Us | Terms and Conditions | Privacy Policy | Anti-Spam Policy | Report Abuse | Report Problem | Contact Us

Harmonica Space offers free social networking, harmonica forums and harmonica chat for harmonica players.
Join today and meet other harmonica players from all over the world!

Web Development and Web Design by Brady Mills Graphics