Re: Fiberglass custom sub box questions
Some guys use packing peanuts. There is a thread somewhere that gives the volume of a specific amount of peanuts. You can figure out the box volume from the amount of peanuts it takes to fill the box.
Some guys also use water, but I would only do this on a 100% fiberglass enclosure so you don't risk soaking any wood.
'65 VW Bus
MA Hippo 122, (2) Aura Sound 8's, (2) SoundStream 6.5 coax, (2) Alpine Type-S 6x9's [rear fill], MBQ DSC1500.1D, RF 501X
'02 BMW 330xi (AWD coupe), every option
Harman/Kardon 12-speaker System Option + Dayton HO D4 10" and PPI Ion 650.1 in sealed box
And many more car audio goodies in storage