Box Calc. 2-way
Volume will be slightly reduced from drivers, bracing,
port and crossover, but even with
11 liter volume port dimensions can be maintained without
change to overall performance.
You may produce a higher cabinet to reduce depth from
adding volume to the bottom of the
cabinet. Maintain placement of drivers with regard to
upper edge of cabinet.
Parts list for the 2-way system.
Left: SPL of drivers in cabinet without
crossover. Right: Merged SPL from final system @ 2.8
volts/1 meter distance.
Left: Point of crossover is 3.4 kHz.
Right: Final system impedance. Minimum is 4 ohms at 600
2009 © Troels Gravesen
Appetite for more PL14s? Here's a d'Appolito version.
Use vent 50 (ID) x 65 mm to produce port tuning ~48 Hz.
Parts list for the d'Appolito system.
Download kit prices (pdf
Left: SPL of drivers mounted on shown front panel.
Right: SPL from finished system @ 2.8 volts, 1 meter
distance. Blue = minimum phase.
Left: Blue = inverted tweeter polarity. Right: System
Tweeter attenuation/R1011: 0R (red), 0R47 (green), 1R0
(blue). Take your pick!