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Thread: Cabinet Plans for Tannoy HPD 385

  1. #81
    Join Date: Nov 2011

    Location: wirral

    Posts: 245
    I'm frank.

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    Quote Originally Posted by ToTo Man View Post
    Ah, ok Frank, that makes sense, thanks.
    The original post gave the +6 dB frequency

  2. #82
    Join Date: Sep 2014

    Location: Northern Ireland

    Posts: 1,403
    I'm John.

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    OK, next step with the sealed cabs is amp with lower damping factor for fuller bass.....


  3. #83
    Join Date: Sep 2014

    Location: Northern Ireland

    Posts: 1,403
    I'm John.

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    Not much puff with the passive preamp so out comes the active....


  4. #84
    Join Date: Nov 2011

    Location: wirral

    Posts: 245
    I'm frank.

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    Interesting to observe how the larger Tannoy systems Baffle Step freq sits below the average room Schroeder frequency. I'd guess this is why they don't bother with BSC.

  5. #85
    Join Date: Dec 2013

    Location: Suffolk

    Posts: 128
    I'm Simon.

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    @fatmarley

    Could you tell me what simulation programme was used here?

    Thanks

    DM

    Quote Originally Posted by fatmarley View Post
    Here's 210ltr sealed. It's almost exactly the same as 170ltr sealed, so not worth increasing volume. The dark grey line is with a guesstimate at your room gain with the dimensions you gave me.


    Last edited by darkmatter; 13-06-2021 at 15:13. Reason: correction

  6. #86
    Join Date: May 2011

    Location: Victoria, Australia

    Posts: 147
    I'm David.

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    A challenge but a fantastic project to have completed. The sound of these will blow you away JohnJo.

    https://theartofsound.net/forum/show...3-Westminsters

  7. #87
    Join Date: Sep 2014

    Location: Northern Ireland

    Posts: 1,403
    I'm John.

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    Beautiful work David

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