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  1. 28th January 2019, 03:26 PM #31
    BobL
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    Quote Originally Posted by Lappa View Post
    So, if you have no ducting after the filters then the second connection can go straight to to atmosphere, as you said.
    As they are differential gauges, measurement from the two ports gives the difference between each pressure therefore an indication of filter blockage.
    +1
    That’s always how I’ve always done it as well.
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  3. 29th January 2019, 12:30 AM #32
    blackhorse16a
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    OK, thanks.
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  4. 29th January 2019, 12:08 PM #33
    Chris Parks
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    Quote Originally Posted by Flindersia View Post
    Something like the sketch attached. May need to make the openings between baffles a little larger than 100x300mm.

    Attachment 446878
    How is this going?
    CHRIS
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  5. 30th January 2019, 02:20 AM #34
    blackhorse16a
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    Thanks for the sketch, Chris. As you know, my filters are vertical and sit on top a clean-out box. I think I'll have to enclose the filter stack with a rockwool lined cabinet and see how that goes. Right now I get 98dB 3 feet from the stack. Ouch!
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  6. 30th January 2019, 04:00 AM #35
    BobL
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    Quote Originally Posted by blackhorse16a View Post
    Thanks for the sketch, Chris. As you know, my filters are vertical and sit on top a clean-out box. I think I'll have to enclose the filter stack with a rockwool lined cabinet and see how that goes. Right now I get 98dB 3 feet from the stack. Ouch!
    The rockwool on any sound reducing enclosure would need to be supported by some serious mass in/on the cabinet. What thickness of timber for the cabinet walls are you thinking?
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  7. 30th January 2019, 06:27 AM #36
    blackhorse16a
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    20 mm MDF on 2x4 studs?
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