DIY Parabolic Mic!

After some months of faffing around and one botched attempt I have finally finished building a rudimentary DIY parabolic mic to use for field recordings. In total, the project probably cost me around £15 and I’m pretty happy with the result.

 

 

The materials I used are as follows:
1x Large Plastic Bin Lid
1x Jam Jar Lid
2x Jubilee Clips
1x Wooden Dowel
1x Metal Pipe
1x Lavalier (around £8 from amazon)
Gaffer’s Tape
Cable Ties

The only tools I used were a hacksaw, hot glue gun, drill, ruler, pen and a pair of scissors. The basic idea for my design came from this article and it was pretty simple to construct. I modified their design slightly after calculating (very roughly using the formula found here) where the focal point of my parabola was. Seeing as the bin lid I used as a dish is not a true parabolic curve, it doesn’t reflect quite as well as it would if it was, but i’m happy with it anyhow for the time being.

There are lots of folks out there who have made substantially better parabolic reflectors than me and some who have  constructed their own mics for the purpose. Check out examples here and here for starters.

Field recordings to follow shortly!

Update: Here’s a field recording made with the mic.

 

Update: I’ve now retired this mic as it was a bit unwieldy, fragile and not that effective. Still a good learning experience for me though! I took the lav mic and repurposed it into a DIY stethoscope mic which you can read more about here.

First Transmission

Over the coming months I will be using this blog to keep a diary of my work.

I hope to be able to keep track of my projects here, whilst also sharing my thoughts and feelings about the various things I’m working on with the aim of improving my writing skills and creating an ongoing document of my work.

I’m currently in the process of building a DIY hydrophone and a parabolic reflector to use for field recordings.

I will be sharing my progress and any subsequent recordings I make with them here over the next few months.
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