line to mic (hi-z to lo-z) adapter? at DVinfo.net

Go Back   DV Info Net > The Tools of DV and HD Production > All Things Audio

All Things Audio
Everything Audio, from acquisition to postproduction.


Reply
 
Thread Tools Search this Thread
Old July 17th, 2014, 01:42 PM   #1
Major Player
 
Join Date: Mar 2004
Location: Pacifica, CA
Posts: 348
line to mic (hi-z to lo-z) adapter?

Just got a FDR-AX100 camcorder. The audio input is for 'mics' and after testing I can verify that while it has a pretty wide input adjustment range, the expected distortion from a line level signal can happen real fast with this input. Anyone know of a slick, under $200 solution for a stereo transforming adapter. Keep in mind that Beachtek and similar devices nearly all output line level. I need the opposite, to go from line to mic level, preferably to a stereo 1/8" trs plug. Right now I'm looking at the Samson S direct box and th Ebtech Line Level Shifter. Any cool device I'm missing?
Eric Lagerlof is offline   Reply With Quote
Old July 17th, 2014, 04:18 PM   #2
Trustee
 
Join Date: Aug 2007
Location: Portland, Oregon
Posts: 1,177
Re: line to mic (hi-z to lo-z) adapter?

Quote:
Originally Posted by Eric Lagerlof View Post
Keep in mind that Beachtek and similar devices nearly all output line level. I need the opposite, to go from line to mic level, preferably to a stereo 1/8" trs plug. Right now I'm looking at the Samson S direct box and th Ebtech Line Level Shifter. Any cool device I'm missing?
Every Beachtek product I have ever seen outputs mic level. Dunno where you got the idea that they "nearly all output line level"?

You did not identify where/what your line-level signal is coming FROM? Do you also need transformer isolation along with attenuation? The Rolls DB-25 is my favorite little box for combining isolation along with line-to-mic attenuation.
Richard Crowley is offline   Reply With Quote
Old July 18th, 2014, 10:32 AM   #3
Trustee
 
Join Date: Aug 2008
Location: New York
Posts: 1,842
Re: line to mic (hi-z to lo-z) adapter?

Yes, where/what your line-level signal is coming from?
The cheapest is a simple attenuation cable, about $10 in parts.. of course some soldering skills would be needed. Wouldn't be transformer isolated though, if that's a requirement.
"The Rolls DB-25 is my favorite little box for combining isolation along with line-to-mic attenuation"
> Same here. It has a ground lift and a 0-20-40dB pad switch as well. The 'B' series has variable attenuation. The balanced output is easily converted to unbalanced. It's a single channel though..again.. where/what your line-level signal is coming from?
Rick Reineke is offline   Reply With Quote
Old July 19th, 2014, 08:56 AM   #4
Major Player
 
Join Date: Mar 2010
Location: Raleigh, NC, USA
Posts: 677
Re: line to mic (hi-z to lo-z) adapter?

Quote:
Originally Posted by Eric Lagerlof View Post
I need the opposite, to go from line to mic level, preferably to a stereo 1/8" trs plug.
What you're looking for is called a "pad". Something like
this
.

That said, you probably don't need even that. The Beachtech equipment will almost always output a mic level signal -- most of it is designed to work the DLSRs, which only take mic level signals. Only use a pad if you really need it.
Bruce Watson is offline   Reply With Quote
Old July 19th, 2014, 11:09 AM   #5
Major Player
 
Join Date: Mar 2004
Location: Pacifica, CA
Posts: 348
Re: line to mic (hi-z to lo-z) adapter?

My Bad, I mis-read specs on one of the Beachteks and assumed that like my little Behringer Eurorack mixer, (where the signal is coming from), that the Beachteks sent out line level. Also looking at the Samson-S stereo DI and the Ebtech Line Level Shifter. Sorry for the sloppy first post. The Rolls looks like a good, inexpensive option and I'm glad it performs well.
Eric Lagerlof is offline   Reply With Quote
Old July 19th, 2014, 11:52 AM   #6
Trustee
 
Join Date: Aug 2008
Location: New York
Posts: 1,842
Re: line to mic (hi-z to lo-z) adapter?

The Samson stereo DI may be a good option> two channels and active, (preferable for musical instruments). Though I haven't used one, so an uncertain candidate for line level (to mic) applications.
FWIW, I prefer the Countryman Type-85 DI for acoustic-electric guitars.
Rick Reineke is offline   Reply With Quote
Old July 20th, 2014, 08:30 AM   #7
Trustee
 
Join Date: Jul 2003
Location: Burlington
Posts: 1,961
Re: line to mic (hi-z to lo-z) adapter?

The Ebtech Line Level shifter is a fine device, but not for what you want. It is a bi-directional +4db to-and-from -10db line-only level shifter. It has transformer isolation and also converts bi-directionally from balanced to unbalanced. I use several of them, but they don't have anything to do with mic level signals.

You really need a BeachTek-type device. It easily mounts under the camera and also has provision to defeat the Plug-In-Power on your camera's mic jack. If you make or buy a simple pad, it would also need to be constructed to defeat this voltage. Otherwise it will cause substantial noise problems, especially if the 3.5mm plug is moved or tugged.
Jay Massengill is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > The Tools of DV and HD Production > All Things Audio

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 08:28 AM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network