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Gear / Technical Help => Microphones & Setup => Topic started by: Q-W-Y on August 21, 2004, 10:20:06 AM

Title: Make MICROPHONES and Batterybox by yourself! (for your NEUROS)
Post by: Q-W-Y on August 21, 2004, 10:20:06 AM
Hi people,
By reason that I read there on forum about poor microphones that costs as much as the Neuros (It is a little sick, don't you think...) I've decided to post about my solution.

As you can see on the photos, battery box has got small connector for powering two Electret microphones (MCE 2500 {40-20000Hz}). If I need only batterybox (recording from soundboard), I can easily disconnect microphone circut.

Photo1 - Battery box without mics http://www.ceskyinterier.cz/temp/QWY_BBpic1.jpg

Photo2 - Battery box detail (with fuse) http://www.ceskyinterier.cz/temp/QWY_BBpic2.jpg

Photo3 - Microphones http://www.ceskyinterier.cz/temp/QWY_MIC.jpg

Photo4 - Powered microphones http://www.ceskyinterier.cz/temp/QWY_MIC_pwr.jpg


As you can see on the photo3, there is small circut on piece of PCB.
List of components: 
2 pieces of Electrolytic tantalum capacitors 2,2 MicroFarads / 16 Volts
2 pieces of Resistors 4,7 Kilo Ohms  (4k7)
1 piece of "jumper connector"  ..it is similar to jumper which you probably know from your PC.

Simple scheme of circut for one mic is there. http://eos.ges.cz/cenikweb/F/MICRO.jpg  Positive electrode of Tantalum capacitor should be connected to the output. (Line-in jack)

BatteryBox's list:
8 pieces of SANYO accumulator 2100 mAh
1 piece of Battery holder size AA for 8 batteries
1 piece of Fuse for current 1A
..and piece of shielded cable :)

If you don't have any charger, i recommend MW 4798  (cpu controlled charger)


bye





-----Q-W-Y, Czech paranoid android-----
Title: Re: Make MICROPHONES and Batterybox by yourself! (for your NEUROS)
Post by: sleepypedro on August 22, 2004, 09:59:14 PM
1 piece of Battery holder!
Title: Re: Make MICROPHONES and Batterybox by yourself! (for your NEUROS)
Post by: BobW on August 26, 2004, 09:21:12 PM
Monacor MCE-2500 specs. out a max SPL of 50 db ??? (http://www.monacor.com/int/en/produktseite_monacor.php?artid=3561&spr=EN&typ=u)

Don't breathe too loud or you may overload them.......    :o
I suspect this to be an error.   
Title: Re: Make MICROPHONES and Batterybox by yourself! (for your NEUROS)
Post by: dklein on August 28, 2004, 07:24:16 PM
Quote from: BobW on August 26, 2004, 09:21:12 PM
Monacor MCE-2500 specs. out a max SPL of 50 db ??? (http://www.monacor.com/int/en/produktseite_monacor.php?artid=3561&spr=EN&typ=u)

Don't breathe too loud or you may overload them.......    :o
I suspect this to be an error.   
yeah, especially if they have have the quoted 120dB s/n ratio. ::)