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Faital 15PR400 and Mesa Diesel cab - any benefit to port plugging?

Discussion in 'Amps and Cabs [BG]' started by takeout, Jan 25, 2017.


  1. takeout

    takeout Supporting Member

    Dec 27, 2002
    Kansas City area
    Swapped in some Faitals recently into my two Diesel 1x15s - took very little time to break in and they've performed really well ever since. I made no mods to the boxes in question when I did so; should I have? Thoughts:

    - I know with "real" TL-606 boxes, the option of port plugging is part of the design
    - I know that Diesels are "kinda" TL-606's
    - My Diesels have a bit of a "lip" around the front edge that could make plugging a little more complicated

    My interests have nothing to do with tone (everything sounds great); more to do with keeping the drivers "healthy" (i.e. making the box as simpatico as possible with what the drivers expect).
     
  2. agedhorse

    agedhorse Supporting Member Commercial User

    Feb 12, 2006
    Davis, CA (USA)
    Development Engineer-Mesa, Product Support-Genz Benz
    Don't plug the port, the new driver is pretty close to the box tuning (close enough). The new driver does not perform as well in a sealed box, and power handling may be lower in a sealed box also (below F3).
     
    5StringPocket, slagheap and TAZ like this.
  3. takeout

    takeout Supporting Member

    Dec 27, 2002
    Kansas City area
    FWIW, I should've been more specific - my cabs technically have three ports each, so one could partially port (to change the tuning) without completely sealing the box up.

    See if this link works: Redirect Notice
     
  4. agedhorse

    agedhorse Supporting Member Commercial User

    Feb 12, 2006
    Davis, CA (USA)
    Development Engineer-Mesa, Product Support-Genz Benz
    Without knowing how the existing porting works with the new driver, any changes either way (less or more port area/depth) is nothing more than a guess. The odds are 50-50% that it would help or hurt.
     
  5. Soulfinger

    Soulfinger

    Sep 20, 2004
    Houston, TX
    You'd have to look it up on the old TL606 design specs, but if my memory serves me correctly, plugging the middle ports drops the tuning about 5 Hz or so. The only reason I could thing to possibly do this would be if you're playing 5 string, to help prevent over-excursion. However, I can't see it being a huge difference. If you are using two 15Pr400's up to their limits, well....that's loud.
     

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