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new 12v radio with stock 6v speaker?

Discussion in 'The Hokey Ass Message Board' started by hillbilly4008, Sep 26, 2012.

  1. hillbilly4008
    Joined: Feb 13, 2009
    Posts: 2,917

    hillbilly4008
    Member
    from Rome NY

    Can I get away with doing this? I finally changed my car from 6v positive ground to 12v neg. ground. I want to run a decent radio and still try to use the stock speaker in my dash.

    Will the speaker work on 12 volts? Or should I just gut it and get a new speaker?
     
  2. Speakers don't operate off of battery power they operate off of a signal/power sent by the radio.

    I don't know what an old radio sends to the speaker but I'm willing to bet that a speaker that is that old won't hold up anyway even if it can handle the power.
     
  3. Bryan G
    Joined: Mar 15, 2011
    Posts: 177

    Bryan G
    Member
    from Delmarva

    The speaker doesn't care about voltage. The bigger concern is dealing with running just one speaker off a stereo, and maybe dealing with a speaker that might have one side connected to ground, but you can get around that stuff.
     
  4. ed_v
    Joined: Jun 2, 2008
    Posts: 239

    ed_v
    Member
    from Kentucky

    Speakers don't see voltage, only current. Just make sure the impedance (ohms) is correct.

    Ed
     

  5. d2_willys
    Joined: Sep 8, 2007
    Posts: 4,101

    d2_willys
    Member
    from Kansas

    Old speaker might take a watt or two of power! New stereos are at least 10 watts per channel. Get ready to destroy the cone on it! Just change out the speaker to a new one.
     
  6. Automotive Stud
    Joined: Sep 26, 2004
    Posts: 4,096

    Automotive Stud
    Member

    It's not a big deal to put a modern 6x9 in the dash, and there are even aftermarkets now that play the left and right inputs in one speaker made for the middle. Even one 6x9 will probably sound better than the original, even if you get it to play.
     
  7. Dan10
    Joined: Aug 14, 2007
    Posts: 386

    Dan10
    Member
    from Joplin

    What Automotive Stud is reffering to is a dual coil speaker. Go to a reputable speaker audio store with the model of radio you have and the old speaker and ask for a dual coil speaker the same size.
     
  8. hillbilly4008
    Joined: Feb 13, 2009
    Posts: 2,917

    hillbilly4008
    Member
    from Rome NY

  9. boooooob
    Joined: Sep 14, 2012
    Posts: 38

    boooooob
    Member

    6V radio, that had to be an old tube amp mono radio, the speaker impedence was probably pretty high........hope you didn't pitch the radio.

    New auto amplifiers got to put out high voltage for higher watts (much higher then 12V), because speakers are (normal 4 or 8 ohms) All about ohms law..

    You probably need to get a bracket and mount 2 smaller full range speakers side by side to fit the hole (dual coil speakers are generally woofers) or start chopping holes elsewhere:D:D.......

    boooooob:)
     
  10. d2_willys
    Joined: Sep 8, 2007
    Posts: 4,101

    d2_willys
    Member
    from Kansas

    Tube radios prior to about 58 or so had an audio output tube and output transformer. The transformer output was usually matched to 8 ohm speakers.

    After 57 or so, the tube type radios reduced the tubes plate voltage to 12 volts and used a power transistor (DS501 in GM radios) which also matched up to 8 ohm speakers. One problem with the radios using DS501 transistors were that the output stage was configured as a CLASS A amplifier, which is a current hog, and can run your car battery down quick without the engine running and the key set in ACC.
     
  11. Big_John
    Joined: Mar 28, 2006
    Posts: 326

    Big_John
    Member
    from Upstate NY

    If it's similar to my 53 Chrysler, and I believe it is, it'll be a 6 x 9 size 4 ohm speaker. The tube Chrysler radios used a 4 ohm speaker.

    So... about any modern 4 ohm 6 x 9 speaker will work. Take the chassis off the bracket and reuse the bracket to hold the speaker.. or you could reuse that speaker for that matter, but I don't know as you'll be happy.
     
  12. Big_John
    Joined: Mar 28, 2006
    Posts: 326

    Big_John
    Member
    from Upstate NY

    Here's what I have in the Chrysler. I got a deal on a Retrosound dual voice coil speaker and was going to use that with a modern stereo, but I think I'm going to use the tube radio after all.

    [​IMG]

    The little heat sink is for the 6 volt reducer for the wipers.
     
  13. nali
    Joined: Sep 15, 2009
    Posts: 828

    nali
    Member

    I didn t know dual coil exist for anything else than sub ...
    Not perfect for stereo, I suppose :)
     

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