Dear Johan, There aren’t any fixed values as such for these enclosures as they’re deliberately intended to be user adjustable by trimming the line damping, a little like the pensils are. Nominal Fb is 44Hz, but that varies a little depending on the lagging / stuffing, and doesn’t necessarily mean you have high gain to that point. At one extreme, if you increase the lagging significantly, you’ll have an extended Augspurger style TL alignment [like a Butterworth aligned sealed box with a couple of dB more output], at the other, if you pull all the material, you’ll have something akin to a resonant 4th order vented with additional pipe harmonics. Note I’m not recommending those [!], just saying what the two extremes are & that there is a modest amount of room for experimenting to suit the rest of the system / room as desired within those high / low points.
Some of the other cabinet designs have specifications on the fs, f3, f6.
Just wondering how deep bass one can expect from this design?
Dear Johan, There aren’t any fixed values as such for these enclosures as they’re deliberately intended to be user adjustable by trimming the line damping, a little like the pensils are. Nominal Fb is 44Hz, but that varies a little depending on the lagging / stuffing, and doesn’t necessarily mean you have high gain to that point. At one extreme, if you increase the lagging significantly, you’ll have an extended Augspurger style TL alignment [like a Butterworth aligned sealed box with a couple of dB more output], at the other, if you pull all the material, you’ll have something akin to a resonant 4th order vented with additional pipe harmonics. Note I’m not recommending those [!], just saying what the two extremes are & that there is a modest amount of room for experimenting to suit the rest of the system / room as desired within those high / low points.