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Making voice release mics

Discussion in 'Shooting Related Threads' started by dverna, Feb 15, 2012.

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  1. dverna

    dverna Active Member

    Joined:
    Jan 29, 1998
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    2,717
    There was a thread many months ago about making mics from outdoor speakers by wiring a resister (10 ohm I think) across the speaker inputs I lost the info and was wondering if anyone has it or can find the thread.

    Thanks,

    Don Verna
     
  2. grunt

    grunt TS Supporters TS Supporters

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    Jan 29, 1998
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    5,921
    Location:
    Thousand Oaks Ca
    Don, Ive bought mikes from lashen Electronics 1 800 552 7436. Paided about 10. each 5" ABS speaker SPE SPC-6P. These work great. Dave
     
  3. Oregunner

    Oregunner Well-Known Member

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    Oregon
    We started with the 5" plastic speakers on our Canterbury system, and they get broken when pulled or tipped over. We order speco SPC6P speakers online and replace the internal parts. Much cheaper than buying new speakers. A retired electrical engineer researched the resisters that the originals had, and commented that they weren't really necessary for the length of trnsmission we were using. We have some with, and some without the resisters. I can't tell the difference in how they work. Mark
     
  4. arrow

    arrow Member

    Joined:
    Jan 29, 1998
    Messages:
    86
    If you are interested in information on the proper way to make and calibrate
    mics for CVR systems go to the above web site and get my phone number and or
    e-mail and contact me I will be happy to help you do it the right way

    Bryan Pierce
    Pierce Sales And Repair
    Canterbury Voice Release
     
  5. 320090T

    320090T Well-Known Member

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    Jan 29, 1998
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    3,350
    Location:
    Indiana
    I made a spare set for our club. Found some disc blades for the bases at a farmer friends, they are concave and don't tip like the stock flat ones. Used some ½" rod for the uprights. I threaded one end to double nut to the disc, drilled a hole into the other to attach the speaker. I drilled a hole part way through and put a 90° hook to hang the cables. The speakers were the ones listed above. The cable was bought in bulk from an electronics supply house and all the ends were purchased online really cheap. Used an electrical box, called a handy box, from Walmart (43 cents), bought a push button and switch from Bob Schultz, did some drilling and filing to fit the switches, used 4 strand wire to go to the brain from the switch. Bought a spare brain and relay from Bob and now we have a complete set for half price. Lots of work here but I'm retired, handy, and able, so I did it.
     
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