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Rear window shelf loudspeakers

Discussion in 'The Antiquated' started by PhilA, May 21, 2022.

  1. PhilA
    Joined: Sep 6, 2018
    Posts: 2,104

    PhilA
    Member
    1. Hydro Tech

    I've done a bit of looking about but can't decide what route to go down to put a rear speaker on the shelf behind the back seat of the car.
    Radio is still the tube set so a massive 5.5 Watts into 6 Ohms. I've got a Front/Both/Rear switch on it so being able to put a slightly better speaker in the back would be nice.

    What were the options in the early to mid fifties?

    Thanks

    Phil
     
  2. rudestude
    Joined: Mar 23, 2016
    Posts: 3,048

    rudestude
    Member

    Don't know if will help ...just something I saw online 16536369278994868055654952603853~2.jpg 16536367599954168694976255212294.jpg 16536368854579192300555497101020.jpg
     
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  3. twenty8
    Joined: Apr 8, 2021
    Posts: 3,438

    twenty8
    Member

    I would think the in-dash speaker behind a metal grille would have been about it back then. Whatever you do in the rear will probably not be period correct, but with some thought it could be made to look right.

    speakers.jpg
     
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  4. PhilA
    Joined: Sep 6, 2018
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    PhilA
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    I was trying to avoid cutting holes in the panel.

    I might have one of those metal grilles somewhere though, dating back to the late fifties.
     
  5. BamaMav
    Joined: Jun 19, 2011
    Posts: 6,969

    BamaMav
    Member Emeritus
    from Berry, AL

    What kind of car is it? A lot of cars already have cutouts in the rear shelf that are sized just right for speakers. But even if it doesn't it would be easy enough to cut holes and then cover the shelf with thin fabric so the speaker is invisible.
     
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  6. PhilA
    Joined: Sep 6, 2018
    Posts: 2,104

    PhilA
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    '51 Pontiac sedan so plenty of room on the back shelf. No cutout though.

    I have an original speaker, but it is optimized for AM with a very narrow bandwidth and a heavy power peak at about 1000-1500Hz. Gives it that "tinny radio" sound. The amplifier in the radio is a very high quality class A push-pull , connected to a good loudspeaker it rivals any modern radio.

    So, if I can hide a better loudspeaker, that would be good, I guess.

    Phil
     
  7. jimmy six
    Joined: Mar 21, 2006
    Posts: 16,670

    jimmy six
    ALLIANCE MEMBER

    We used a single center 6x9” in the back of our moms 56 Ford with a fader knob under the dash. My brother and I did in 1960.

    I don’t believe I ever saw a “loud” speaker mounted inside a car. Back in the 50’s I remember a few mounted on roofs at election time. Usually they had 4.. one in every direction.
     
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  8. PhilA
    Joined: Sep 6, 2018
    Posts: 2,104

    PhilA
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    I think I may put a decent loudspeaker under the parcel shelf and make up a new rear window pad to cover it up.

    Also, speaker refers to a person talking, a loudspeaker is an electrical or mechanical device used to reproduce sound to be heard at a distance. Per Webster's. </pedantry>
     
  9. I was trying to figure out how to fit Nancy Pelosi on the shelf and why you would want to. You’d still have that tinny sound your trying to avoid. ;)
     
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  10. PhilA
    Joined: Sep 6, 2018
    Posts: 2,104

    PhilA
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    I think I know what I'm going to do.

    Rather than drill a hole in the back, I think I'm going to make a piece that sits in the space of the shelf from wood, with a raised section in the middle which echoes the waterfall down the back of the car, that can house a nice little 5x7 speaker I have, and have dual purpose to hide a high level brake light that'll shine out the rear window.

    Phil
     
  11. I don't know if this appeals to you, or if you can do it with your current radio, but I have a Bose blue-tooth compatible stand-alone speaker that has great sound quality. They can also be connected with a small auxiliary coed. They are under $100.
     
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  12. PhilA
    Joined: Sep 6, 2018
    Posts: 2,104

    PhilA
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    I took the original radio for the car and added a board inside which has a relay on. Disconnected, the audio from the AM radio is fed to the amplifier of the radio; Bluetooth, it clicks over and the output from the is fed to the amplifier.

    Thus, the output audio quality is solely dependent upon the loudspeaker. The original one in the radio... Well, it works, but it is optimized for AM radio (bandwidth limited audio to 4kHz, with anything below 500Hz removed in the filter to remove a lot of hum) but the power amplifier section has flat frequency response from about 12Hz all the way to nearly 30kHz and is really very high quality. It's the same basic design Fender used for decades in their guitar amps.

    I'm limited for space inside the original radio, hence the original loudspeaker. An external one would expand the radio well.

    Phil
     

  13. Um.....uh.....er..... well, yeah, I got it.....? (all I know about radios is that you turn this knob to find noise, and that knob to make noise louder).... So..... how about them Yankees? Well, gotta go now. Good luck!
    (Whew, I barely got out of that without looking like a dumbass!) LOL
     
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  14. PhilA
    Joined: Sep 6, 2018
    Posts: 2,104

    PhilA
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    1. Hydro Tech

    That's okay, I think I managed to injure myself with my pocket protector.

    I'm late for my Latin class!
     
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  15. PhilA
    Joined: Sep 6, 2018
    Posts: 2,104

    PhilA
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    A little bit of CAD (Cardboard Aided Design).
    20220529_115318.jpg

    Created a template for the shelf.
    20220529_115616.jpg
    Copied that across onto wood. I've cut that out, and sliced it partway up at an angle because the metal kicks up towards the window.

    Need to get or make some brackets to hold that together now. Too hot to carry on outside in the car today, it's like an oven at midday.

    Phil
     
  16. PhilA
    Joined: Sep 6, 2018
    Posts: 2,104

    PhilA
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    1. Hydro Tech

    Sanded down the rough edges, made a nice little kick-up at the back to match the sheet metal.
    20220529_195713.jpg
    Covered it with cotton backing, to make a soft touch.
    20220529_200649.jpg
    Ironed the nice blue broadcloth.

    20220529_201721.jpg
    Glued it on, and stapled the back down.

    20220529_202003.jpg
    Test fit. Happy with that.

    Speaker box next.

    Phil
     
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  17. Looking good and you didn't have to hack up your package tray!
     
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  18. PhilA
    Joined: Sep 6, 2018
    Posts: 2,104

    PhilA
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    I'm trying to figure if I want to break it up with vinyl for the speaker box, or just use the same blue fabric.
     
  19. Fabric....keep it subtle.
     
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  20. PhilA
    Joined: Sep 6, 2018
    Posts: 2,104

    PhilA
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    1. Hydro Tech

    20220530_190039.jpg
    New parcel shelf in place and seat locked in.

    20220530_191635.jpg
    Mk1 6x9 loudspeaker complete failure. Back to the drawing board.
     
  21. A bunch of good ideas are out there.
     
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  22. PhilA
    Joined: Sep 6, 2018
    Posts: 2,104

    PhilA
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    I was going to add a second layer of wood to this and have two sunken sections on the left and right, but decided against it as it would have made the shelf too thick.

    I could very easily sink a couple speakers underneath, cut through and have just the blue fabric over the aperture, but that depends upon cutting the sheet metal, which is something I was wanting to avoid doing (mostly because it's a messy, pain in the behind task).

    Phil
     
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  23. PhilA likes this.
  24. PhilA
    Joined: Sep 6, 2018
    Posts: 2,104

    PhilA
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    I have a 5x7 too, might try that first.

    Also, design in cardboard first, like the shelf was. That worked...!
     
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  25. 54FISH
    Joined: Jan 10, 2011
    Posts: 393

    54FISH
    Member

    Don't know if your looking for originality but if you use your phone for music , there are some kickin Bluetooth portables available , small but loud . Put in corners & crank.
     
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  26. PhilA
    Joined: Sep 6, 2018
    Posts: 2,104

    PhilA
    Member
    1. Hydro Tech

    It is a thought, but the radio in the car performs that function already; it just needs a better loudspeaker.
     

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