Wich Kit to pre-amp an Ribbon Mike (300 Ohms)?

Kits Audio Hi Fi Projects
1

I someone has an experience trying to pre-amp an Mike Ribbon type.
I don’t see wich kit could help ?
Some feed back are wellcome.

Thanks.

Julien

2

We have no experience with a ribbon mike.
What are you trying to do ?
Output level of the mic ?
Required amplification ?
Output impedance of the mic ?
Required freq. range ?

3

Hallo ;
It’s for voices-over, I’ve been trying to get the sound of it with a Shure XLR to USB on a MAC with verry less response.
So that’s why I need to get this mike Pre-Amplified.

Thank you for your help.

Coles 4104 Commentators Ribbon Microphone Technical Specification
Features :

Frequency Response 60 Hz to 12,000 Hz
* Better than 30 dB average discrimination between voice and background noise.
* Provides speech of broadcast quality completely free from breath noises.
* Flat frequency response at the controlled talking distance.

Frequency Response
* 60 Hz to 12,000 Hz
Impedance
* 300 ohm

Sensitivity
* -50 db W.R.T. IV/Pa

Equivalent Electro-magnetic hum pick up
* Less than 0.0002 dynes/cm² equivalent acoustic input for 1 milligaus at 50 c/s

Distortion
* Less than 1% at 120 dB SPL

Connection
* By means of an XLR 3 pin plug - Pin 1 screen - Pin 2 positive - Pin 3 negative.

coleselectroacoustics.com/mi … ical.shtml

4


something like this might work

5

Most likely, this kit will do the job:

http://www.velleman.eu/distributor/products/view/?id=8897

6

Thank for your words.

The Impedance of the mike is = 300 ohms.

When I’m taking the “PREAMPLIFICATEUR MONO UNIVERSEL” K1803
Link "http://www.velleman.eu/distributor/products/view/?id=8897

I should change the Impedance at the input .

Does someone could help me to modify the kit to getting it working on a Mike with 300 ohms ?

Thank you

7

Most likely, no need to adapt impedance.