how to look inside speakers

Discussion in 'Dollars and Sense' started by B3ta, Feb 7, 2019.

  1. B3ta

    B3ta New Member

    Messages:
    31
    Nothing shows up, I have contacted both companies and go from there.


     

     

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  2. B3ta

    B3ta New Member

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    I'm all into vintage, I even live in a vintage loft.

    I'm thinking on painting/stain the cabinets dark, Brazilian wall nut. Then, Replace the screen cloth with something like [check below image]. I can 3d Print in black something like "Coral inside vintage" and stick to the screen on the bottom.




    81QC2KRZXoL._SY355_.jpg



     
  3. B3ta

    B3ta New Member

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    31
    people I need your advice, [check images below] and thanks in advance.

    So, I removed the screen cloth and found out that;

    20 - the midrange dust cap isn't even glued evenly, does it make any difference? this dust cap have a middle screen like a fine metal filter screen.

    21 - the two twitter that are the same, 2H-20 1w 8ohm aren't screwed evenly on the baffle's hole... something that I should correct maybe? if I correct this, best would be replacing the gasket?

    just off topic but related---seems like they were on the hurry to build these speakers LOL maybe high demand back in the 70's---the 70's was a high plateau for originals!!! I'm much younger but, thinking on here---listening Led zeppelin with these speakers back then!!! today I find it just amazing to listen to Sonic Youth, Trentemøller and projects like not too mainstream!!!

    cheers
    T


    IMG_3399.JPG IMG_3400.JPG IMG_3401.JPG IMG_3402.JPG IMG_3403.JPG IMG_3404.JPG
     
  4. avionic

    avionic " Black Knights " Eagle Keeper Subscriber

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  5. imral3

    imral3 Super Member

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    Location:
    Blackwood, New Jersey
    A dust caps only purpose is to keep dust out of the voice coil. No worries if it's a little off center. I'd rethink the whole driver mounting and install on the baffle from the front.
     
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  6. 70's Rockfan

    70's Rockfan New Member

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    Location:
    Michigan
    what is the diameter of the speaker you want to refoam.
     
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  7. swechsler

    swechsler Frog Whisperer

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    Agreed, the drivers look like they were designed to be front mounted. If you have the woodworking skills, use a router to countersink the drivers to the depth of the baffle so it's completely flat. As is, you're probably getting serious diffraction effects from the way the drivers are mounted.
     
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  8. B3ta

    B3ta New Member

    Messages:
    31
    yes, I was thinking about that too, I need to build up a board to hold up the capacitors and bring the wire to the front side. And, then, do magnets or velcro like RTally mentioned... I'm not really into wood work but I do have all the tolls and machines at work. Then, glue the thing down with wood screws.
    I totally agree with you!!! I can even make a port from the back to replace the capacitors if they go bad.

    cheers



     
  9. B3ta

    B3ta New Member

    Messages:
    31
    so, I haven't quiet figured out that part as yet!!!! [check images below] are they 12"? or 10,5"?


    IMG_3409.JPG IMG_3410.JPG

     
    Last edited: Feb 11, 2019 at 11:49 PM
  10. 70's Rockfan

    70's Rockfan New Member

    Messages:
    47
    Location:
    Michigan
    they are 12"
     
    Last edited: Feb 12, 2019 at 5:27 PM
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  11. Grenadeslio

    Grenadeslio Super Member

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    3,664
    Even better if feeling like the rap test was performed on a cement block lol.
     
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  12. B3ta

    B3ta New Member

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    yap, 12"s.
    exactly 311MM and 235MM.

     
  13. B3ta

    B3ta New Member

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    31
    I'm not going to be able to mount the drivers from the outside. the woofer is way to big for the cut-out. I will be working on foaming, do my best, mount everything centered with proper gaskets, mount the baffle with screws and a gasket between baffle and flange step. Then, I'll be looking into a new screen clothe and frame. have to figure out how to make a frame. Will be too big to 3Dprint with my machine capabilities.

    a lot of work a head! YAY!!!!
     

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  14. B3ta

    B3ta New Member

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    music is so intriguing, the perception of ergonomic spaces!!
    look at this example.
    the audio is just awesome!

     
  15. spicer

    spicer Super Member

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    1,147
    Nice audio. Very clean and uncluttered. Intriguing vocals laced into the music.
     
  16. B3ta

    B3ta New Member

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    the ergonomic space of underground audio---back in the 80's/90's with rave parties in castles/churches etc---Sonic Youth was on the top of the re-creative approach!!!


     

     

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  17. B3ta

    B3ta New Member

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    31
    please, post what you guys listen----I need new stuff.
     
  18. RTally

    RTally Speaker addict Subscriber

    Messages:
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    Location:
    Knoxville, Tennessee
    You need to check out the Music Forums if you want to discover new music.
     
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  19. B3ta

    B3ta New Member

    Messages:
    31
    I will, and thanks!!!

    when all the sounds are all connected!!! is like, you have to hear for a speaker! listen to this--- >>>

     
  20. HH-Bham

    HH-Bham AK Subscriber Subscriber

    Messages:
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    Location:
    Birmingham, AL
    Not to rain on your parade -- your enthusiasm is wonderful -- but this is turning into quite a bit of work for what was probably a low-end Coral speaker to begin with. Refoam, remount caps, drivers to front, countersink drivers. While you're at it replacing the caps is basic maintenance on speakers that age.

    All that and you've still got paper tweeters. Back in the day those were made, most good tweeters were horns. Paper tweeters were used on lesser speakers. Then advances were made in tweeter design and dome, ribbon, and other tweeters came . Read up on tweeter types here on wiki. There are, however, some speakers from the 70s that didn't use horn tweets that are well regarded but usually what made them special was a good tweeter.

    So here is a completely different idea: if those cabinets are nice, then retrofit them with modern drivers and components from a place like parts express. You can get some real great sound that way. There are many threads here on AK about doing stuff like that. You have to match components to cabinet size and design (bass reflex (ported) or acoustic suspension (sealed)).
     

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