tookatooka
3709 posts
Oct 26, 2014
6:53 AM
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Hi guys I wanted to build a simple pre-amplifier for a condenser microphone. I didn't want to use a pcb and wanted it to fit in a small box. As you can see all my circuitry is done using choc blocks so soldering etc. is kept to a minimum. It's an easy and cheap way to build a project which will stand up to a lot of abuse. This one is a 3V power supply for the condenser mic plus it has a one transistor pre-amplifier stage to boost the signal and a led to show it is switched on. The size is just 4.5 x 2.25 inches. The battery supply is switched and there is an input and output jack socket. It works GREAT!
If you want to build a small simple circuit you may want to consider doing it this way. It's easy once you've mapped out your wiring routes and connections.
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isaacullah
2864 posts
Oct 26, 2014
10:02 AM
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Nice job, tooka! These are useful things to have around. I built one some years back, powered at 9v, and soldered point to point across the terminals of the audio jacks. Tjey are simple to build and have a low parts count, and so are great beginner projects. I heartily reccommend this for anyone!
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YouTube! Soundcloud!
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tookatooka
3710 posts
Oct 26, 2014
10:27 AM
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Thanks Isaac. Good to hear from you again. Here's the schematic should anyone want to build a very simple condenser mic pre-amp. These mics are quite sensitive little beasts but with the pre-amp you can pick up an ant fart from 100 yards away. I haven't included schematic detail for the led and switch. I figure if you can read the schematic you'll know how to wire those in anyway.
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Greg Heumann
2868 posts
Oct 26, 2014
12:53 PM
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Tooka - I applaud your work and ingenuity. I personally can't stand condenser mics for harp - they sound awful if overdriven. Good for acoustic work though. But I've often wanted to listen to ant farts.
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/Greg
BlowsMeAway Productions
See my Customer Mics album on Facebook
Bluestate on iTunes
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bluemoose
1018 posts
Oct 27, 2014
12:12 PM
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"pick up an ant fart from 100 yards away"
Curious minds wait in trembling anticipation of the video for this!
MBH Webbrain - a GUI guide to Adam's Youtube vids
FerretCat Webbrain - Jason Ricci's vids (by hair colour!)
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