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소개

The DM-100 is still the go-to microphone for all Legria / Vixia camcorders. This basically includes all Canon camcorders starting with "HF". The mic has a high price point of about 190$, and has a design flaw that will render it unusable after only a couple of years of use.

Symptoms: The microphone produces a rattling noise when the camera is being moved, basically rendering it useless for all other than stationary shots. This guide will give a quick fix to the problem for less than a dollar.

부품

지정된 부품이 없습니다.

  1. This is the rattly beast.
    • This is the rattly beast.

  2. You access the internals by removing the grill in the front, which is held in place by a small amount of adhesive.
    • You access the internals by removing the grill in the front, which is held in place by a small amount of adhesive.

    • Use a set of tweezers (or a pointy metallic object, I used a tiny screwdriver) and gently pull in a circular fashion not to destroy the metal girder.

  3. Canon has used an elastic band for vibration reduction of the directional "sound pipe" (seen as a circle behind the elastic band). The pipe visible behind the elastic  is supposed to be mounted toe the inner wall with the two marked circular joints.
    • Canon has used an elastic band for vibration reduction of the directional "sound pipe" (seen as a circle behind the elastic band).

    • The pipe visible behind the elastic is supposed to be mounted toe the inner wall with the two marked circular joints.

    • These incredibly weak joints are bound to break as the rubber loses its elasticity.

  4. Rubber band is irreparable and needs to go. I scratched it out using a small, sharp screwdriver. Rubber band is irreparable and needs to go. I scratched it out using a small, sharp screwdriver.
    • Rubber band is irreparable and needs to go. I scratched it out using a small, sharp screwdriver.

  5. The culprit of the rattling noise is now apparent. A plastic cylinder stretches through the whole of the microphone, enabling the microphones forward focused / directional sound.
    • The culprit of the rattling noise is now apparent. A plastic cylinder stretches through the whole of the microphone, enabling the microphones forward focused / directional sound.

    • When the rubber band breaks because of the bad joints, this thing hits the inner side of the cylinder.

  6. I measured the internal diameter, and found that there in total was a void of about 2mm  in between the tube and the mic cylinder. After some searching, I found a 2mm thick foam sheet  for about 50 cents at a hobbyist shop. Use this to cut a small sheet of depth of about 2 cm and length matching the inner circumference.
    • I measured the internal diameter, and found that there in total was a void of about 2mm in between the tube and the mic cylinder.

    • After some searching, I found a 2mm thick foam sheet for about 50 cents at a hobbyist shop.

    • Use this to cut a small sheet of depth of about 2 cm and length matching the inner circumference.

  7. After some scissoring, you should have something that looks a bit like this.
    • After some scissoring, you should have something that looks a bit like this.

  8. Add a dab of glue around the foam  to make sure it stays in place.
    • Add a dab of glue around the foam to make sure it stays in place.

  9. Add a thin layer of glue to the yellow circle and reattach the grill and windstopper.
    • Add a thin layer of glue to the yellow circle and reattach the grill and windstopper.

  10. There! 190$ microphone fixed for less than a dollar.
    • There! 190$ microphone fixed for less than a dollar.

    • The audio quality isn't affected at all.

결론

The DM-100 is a good, but expensive microphone for all Canon camcorders. The internal suspension is broken by design, and will render the microphone unusable after 2-3 years of use.

This fix is a permanent fix to Canons poor design. Since the pipe is solid, and the foam is only reaching about 2cm into the pipe, audio quality is not affected at all.

다른 한 분이 해당 안내서를 완성하였습니다.

Bonka

회원 가입일: 2015년 05월 15일

131 평판

안내서 1개 작성함

댓글 2개

Good work, good tutorial! Can you help me? I have DM-50. How to connect it to Mini Advanced Hot Shoe? Do you have an electric circuit DM-50?

raoul.luigend@gmail.com

raoul.luigend - 답글

Hi, Raoul. I’m not sure what you’re trying to accomplish on what sort of equipment. I don’t know the DM-50, but if you have a camera with the mini hot shoe like the Legria / Vixia, you just need to slide open the compartment on the top of the camera and insert the mic firmly into the hot shoe.

Bonka - 답글

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