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Thread: Small box D123

  1. #1

    Small box D123

    Hi. I have a pair of the D123 and want to build a nice small box and pair them with for example the 075. Well, any ideas of a small box and what way the drivers will act? Very thanksful for suggestions!

  2. #2
    Join Date
    Aug 2009
    cleveland, ohio 44135

    you won't get a good low end out of a small box

    My d123's are in a 2.25 cubic ft box. My f3 response is 58 hz! You will need a 4to 5 cubic ft box to get a good low end. Over all they sound great equalized and using great 077 tweeters with them in a 2 way system. Good luck Hans with your system.-RUDY

  3. #3
    Dang. Amateur speakerdave's Avatar
    Join Date
    May 2003
    Northern California
    That is a system JBL was selling as long ago as the '50's; they stopped selling it in the '70's, the reason being that by then they felt they could do better (or lower their cost acceptably) at that price point, I would guess. Either way there are better options out there now. Are you after a retro sound?

  4. #4
    Senior Member jerry_rig's Avatar
    Join Date
    Dec 2008

    D123 System

    My first DYI project was a D123, an LE20 tweeter and an LX2 crossover in an L100 sized ash wood box. It sounded wonderful -- and I would guess smoother than with the 075, based on my experience with that driver -- but there really wasn't much bass happening. As Rudy notes, getting decent low end out of the D123 requires some serious help, cabinet-wise. One option would be to stay with a smaller cabinet and cross it over (or simply augment it) with a subwoofer. That would be a nice setup. Good luck!

  5. #5
    RIP 2011 Zilch's Avatar
    Join Date
    Jun 2004
    Berkeley, CA
    "0.5" them in pairs, maybe....

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