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  • JSP – an interesting concept

  • 123toid

    December 7, 2021 at 7:36 am


    I really like the PC83.  Just don’t expect much bass from it. Having said that, I’, sure it would do great in a build like this.  But I would keep it sealed.  It does appear the guy in the video doesn’t really know how to tune a speaker, but just put the ports in to make it look cool. That is what it appears at least. 

    JSP – an interesting concept

  • tvor-ceasar

    December 7, 2021 at 5:07 pm

    Did you check the link under the video. You’ll have to use the translate feature on your browser.

    There’s a couple of Excel files on that page, about 1/3 the way down, where a link says “It is a rough calculation”.

    Based on the PC83-4 optimum box of ~0.18 CF, a 1.5″Dx6.6″L port will give a Fport of 58.6 Hz and a F3 of 49.3 Hz. Using that Excel sheet, a 0.25 CF box with 4 1″Dx9″L ports will resonate at 54.2 Hz.

    From what I can tell by unlocking and unhiding all the cells, and translating everything, this is purely based on box volume and ports, no driver information is used.

    I have to look at the second xls file yet. Interesting and baffling at the same time.