Taperssection.com

Gear / Technical Help => Battery Boxes, Preamps, Mixers, ADCs, and Processors => Topic started by: pool on January 22, 2014, 02:02:44 AM

Title: Battery box 9v for 5v mics ok?
Post by: pool on January 22, 2014, 02:02:44 AM
I have external mics which use same caps used in the internal mics of Sony PCM-M10.
http://www.frogloggers.com/BT%20EM172.htm

The mics do not work on line-in on M10 only mic-in.
When I added the Soundman A3 adapter (6v battery) they work on line-in but I want to eliminate it since I am suspecting the A3 distorts when music is loud.

1. Do I need a battery box to make them work line-in?
2. Should it be a 9v battery or will it damage these mics? (the specs show operating voltage 5v but I have used 6v adapter)
3. If yes both, something like CA ugly? http://www.church-audio.com/viewcategory.php?groupid=3

thank you.







Title: Re: Battery box 9v for 5v mics ok?
Post by: willndmb on January 22, 2014, 08:42:10 AM
1 yes
2 the link you provided says 3-10 volts will work, 5 is recommended
So yes 9 will be ok
3 any BB including the one you linked will work or you can look into a pre like the 9100 for example
Title: Re: Battery box 9v for 5v mics ok?
Post by: pool on January 22, 2014, 10:42:53 AM
Thank you willndmb.
I sourced a BB.
I prefer not having a pre. I'm hoping I get enough signal with BB and line-in (when used for "rock"). Next one will be P. Smith in an auditorium.
Title: Re: Battery box 9v for 5v mics ok?
Post by: MIQ on January 24, 2014, 01:11:06 AM
Hi Pool

I use EM172s with 9V bias all the time. As Willndmb mentioned these capsules can be used with a higher bias voltage than 5V.

These capsules are very quiet and also pretty sensitive. I don't think you will have any trouble plugging the output of the battery box into the line input if you are taping a rock show.   If it is too low you could try turning off the PIP bias voltage on the M10 if possible and plugging into the mic input. 

Miq
Title: Re: Battery box 9v for 5v mics ok?
Post by: pool on January 24, 2014, 12:56:42 PM
Thnaks MIQ.

When using the battery box in line-in, does the PIP in the M-10 need to be off or on?
Title: Re: Battery box 9v for 5v mics ok?
Post by: yates7592 on January 24, 2014, 01:40:46 PM
Doesnt matter, the PIP only works through the mic in. But you should switch it off anyway.