Zoom Q3HD audio volume when using an external MIC

Discussion in 'Amateur Video Production' started by liu, Apr 14, 2011.

  1. liu

    liu Guest

    We purchased this camera for training video. The audio quality with
    its built-in is good as advertised. When we tried to use an external
    mic, the volume was really low at ~ -40db. What is your experience on
    this? I wonder if we got a lemon.

    THANKS!
     
    liu, Apr 14, 2011
    #1
    1. Advertising

  2. liu

    Paul Guest

    liu wrote:
    > We purchased this camera for training video. The audio quality with
    > its built-in is good as advertised. When we tried to use an external
    > mic, the volume was really low at ~ -40db. What is your experience on
    > this? I wonder if we got a lemon.
    >
    > THANKS!


    http://www.zoom.co.jp/english/products/q3hd/

    "Input LINE IN (1/8" Stereo phone jack)"

    That's not much to go on, but that implies a line level microphone,
    which might be about 1V rms or so. It also doesn't state
    whether it provides mic bias, to power a condenser mic
    (similar to the two condensers mounted in the upper housing).

    There are some suggested voltage values here, for line level.

    http://en.wikipedia.org/wiki/Line_level

    USA professional audio +4 dBu 1.228 Vrms (approximate)
    Consumer audio −10 dBV 0.316 Vrms

    The Zoom product should make statements along those lines,
    to help consumers.

    It could mean, you're missing a microphone preamp in your kit bag.
    A preamp may be necessary, to get from microphone level to line level.

    Paul
     
    Paul, Apr 14, 2011
    #2
    1. Advertising

Want to reply to this thread or ask your own question?

It takes just 2 minutes to sign up (and it's free!). Just click the sign up button to choose a username and then you can ask your own questions on the forum.
Similar Threads
  1. Rock

    Lip sync and mic input volume help

    Rock, Apr 20, 2005, in forum: Amateur Video Production
    Replies:
    6
    Views:
    240
  2. CM

    Binding wave volume to general volume control

    CM, Jul 25, 2006, in forum: Amateur Video Production
    Replies:
    1
    Views:
    313
    Richard Crowley
    Jul 26, 2006
  3. Phil

    external mic volume too low

    Phil, Dec 9, 2004, in forum: Professional Video Production
    Replies:
    1
    Views:
    267
    Richard Crowley
    Dec 10, 2004
  4. Rock

    Lip sync and mic input volume help

    Rock, Apr 20, 2005, in forum: Professional Video Production
    Replies:
    6
    Views:
    240
  5. Tony

    Camera mic question external mic only records one channel

    Tony, Jun 14, 2008, in forum: Professional Video Production
    Replies:
    18
    Views:
    647
    Richard Crowley
    Jun 18, 2008
Loading...

Share This Page