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Thread: Altec 820A Corner horn??

  1. #31
    Senior Member Dylanl's Avatar
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    So what are your expectaions in HZ range?

  2. #32
    rghinton
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    My project

    I am building 821's. You can see the project here. http://www.hostboard.com/cgi-bin/ult.../f/3729/t/2661

  3. #33
    Senior Member OLDGEN's Avatar
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    here are some drawing for ZENE

    he had asked me
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  4. #34
    Senior Member OLDGEN's Avatar
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    more

    the second upload
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  5. #35
    Senior Member OLDGEN's Avatar
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    here are some drawing for ZENE

    the third
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  6. #36
    Senior Member OLDGEN's Avatar
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    more

    the fourth
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  7. #37
    Senior Member OLDGEN's Avatar
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    more

    the last picture
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  8. #38
    JBL 4645
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    OLDGEN

    How do you get that nice (curved angle) on the vented horn system as don’t know anything about wood work?

  9. #39
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    Quote Originally Posted by OLDGEN View Post
    the second upload
    Before I put my components (130A/LE175-HL-91/2402) into the L200 cabinets, they were in the University EN-15 cabinets (like the EN-12 shown but for a 15"). They sounded like cr-p with no real bass to speak of, even with all that twisting going on in the cabinet. The L200 cabinets were a vast improvement.

  10. #40
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    More pics. Maybe they'll help.
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  11. #41
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    rear view.
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  12. #42
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    Hello,

    I own a pair of Altec Lansing speakers in excellent condition, which I believed to be vintage 820A. Checking a technical catalog on an internet site 'voiceofthetheatre.com'), I realized that overall height of my speakers is only 104,5 cm (41 + inches) and is smaller than 47 + indicated in the 820A catalog. Is it a variant of 820A ? Could it be instead a non genuine Altec Lansing manufacturing with those different dimensions ?

  13. #43
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    Quote Originally Posted by rghinton View Post
    I am building 821's. You can see the project here. http://www.hostboard.com/cgi-bin/ult.../f/3729/t/2661
    I'm looking for any useful DIY info on the 821 cabinet - the project thread link above was a bit of a dead end, since all project picture links etc. weren't available any more.

    If anybody on this forum, has pics, plans or useful links or tips, I'd be very grateful - THANKS!!!

    Cheers
    Peter

  14. #44
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    Anybody...please?

  15. #45
    Senior Member jcrobso's Avatar
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    There were a fer variations of the basic cabinet

    Quote Originally Posted by Surcouf View Post
    Hello,

    I own a pair of Altec Lansing speakers in excellent condition, which I believed to be vintage 820A. Checking a technical catalog on an internet site 'voiceofthetheatre.com'), I realized that overall height of my speakers is only 104,5 cm (41 + inches) and is smaller than 47 + indicated in the 820A catalog. Is it a variant of 820A ? Could it be instead a non genuine Altec Lansing manufacturing with those different dimensions ?
    Altec made a mini variation of the VOTT for portable sound, I forget the model number. The problem has always been how get good bass from the speaker.
    Most of the designs in this thread are from the 1950~early 1960s, They were in the first book I bought on speaker design. How do you get a big horn into a small space, the "K" horn was the best over all comprise, remember most everything is a comprise.

    FYI, check here.
    http://www.lansingheritage.org/html/...970s-plans.htm

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