+ Reply to Thread
Results 1 to 4 of 4

Thread: S70 Alpha/Alpha II/Alpha III baffle layout?

  1. #1
    Senior Member GordonW's Avatar
    Join Date
    May 2003
    Location
    Marietta/Moultrie GA USA
    Posts
    1,454

    S70 Alpha/Alpha II/Alpha III baffle layout?

    Hey, I seem to have misplaced the picture I had, of a JBL S70 Alpha system, with the grille off. I know the mid and tweeter are near the center top, in a vertical stack, with the woofer and passive radiator "flanking" them but near the bottom of the cabinet. However, I don't know the exact proportions.

    Pretty much any picture would be OK- I just need proportions. I can figure out the scale I need, and get exact measurements from that, if I just know where everything is, in relation to everything else...

    Anyone know of a picture around anywhere? I haven't been able to find one. I'm going to check Ebay completed auctions next...

    Regards,
    Gordon.
    This Is Gordon's Page: www.geocities.com/gordonwaters

  2. #2
    Senior Member Figge's Avatar
    Join Date
    May 2004
    Location
    sweden
    Posts
    671
    i think this is what you´re lookin´ for
    Attached Images Attached Images  
    Last edited by Figge; 07-12-2004 at 03:07 AM.
    Fredrik G.

  3. #3
    Senior Member Figge's Avatar
    Join Date
    May 2004
    Location
    sweden
    Posts
    671
    are u building those?
    Fredrik G.

  4. #4
    Senior Member GordonW's Avatar
    Join Date
    May 2003
    Location
    Marietta/Moultrie GA USA
    Posts
    1,454
    Originally posted by Figge
    are u building those?
    Yep! With one alteration- my passive radiators are PR300s, instead of PR12s. The PR300 should be capable of a bit more volume displacement than the PR12s.

    I've actually got all the parts, in functional condition now. I got a mismatched pair of L100s which provided 123A-1s, a LE5-2 frame, a LE20 and crossover boards, found a pair of frames and reconed a pair of PR300s (with a 128H cone and spider, and a 3" diameter 1/2" thick round slug of MDF with a bolt in the center for a "voice coil", ala the original), traded Don W. for a pair of LE20s (of which one exactly matches the one from the early L100) and another LE5-2 frame, and just today reconed the LE5-2s.

    I think I may build a more "contemporary" styled cabinet, as well as changing the PR... I'm still undecided on cosmetics, but it may wind up looking a bit more "studio-monitorish" than the original "low-boy console" look of the original. The construction may take a while, as I'm building, at last count, 6 different loudspeaker projects at once right now, one of which (a double-18", double 6.5/horn WWMTM PA speaker) has a very definite "drop-dead" date. But the L70 is MUCH more likely to get attention than before, since EVERYTHING is now on-hand for it!

    Thanks for the pic!!

    Regards,
    Gordon.
    This Is Gordon's Page: www.geocities.com/gordonwaters

+ Reply to Thread

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Driver Spacing and Baffle Layout
    By Robh3606 in forum Lansing Product Technical Help
    Replies: 0
    Last Post: 03-23-2004, 09:09 PM
  2. Baffle layout
    By boputnam in forum Lansing Product DIY Forum
    Replies: 70
    Last Post: 12-14-2003, 09:48 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts