CROSSOVER 2-way     CABINET 2-way       d'Appolito version       CROSSOVER d'Appolito version      CABINET d'Appolito       

Download pdf data sheets on drivers:
Vifa PL14WJ09-08 - - Vifa XT25TG30-04

The PL14WJ09-08 is to my ears one of the most smooth sounding 5" drivers ever made and no wonder it has been a steady driver in the Tymphany program for years and years. Due to cone geometry, coating and suspensions, it's got an even response all up to 7-8 kHz, allowing simple crossover construction. It's not particularly efficient, but the result is decent bass response down to 50 Hz in suggested cabinet. With a Qt = 0.36, it's a perfect driver for box simulation. Overall system sensitivity is around 84-85 dB/2.8 volts. The XT25TG tweeter is a well-proven tweeter too, so no further comments on this driver.

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.

Crossover 2-way

Parts list for the 2-way system. Contact Jantzen Audio for complete kit excl. drivers: contact@jantzen-audio.com

Finished crossover.

Measurements

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 Hz.

d'Appolito version
Copyright 2009 © Troels Gravesen

Appetite for more PL14s? Here's a d'Appolito version.

Cabinet d'Appolito

Use vent 50 (ID) x 65 mm to produce port tuning ~48 Hz.

Crossover d'Appolito

Parts list for the d'Appolito system. Contact Jantzen Audio for complete kit excl. drivers: contact@jantzen-audio.com

Measurements

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 final impedance.

Tweeter attenuation/R1011: 0R (red), 0R47 (green), 1R0 (blue). Take your pick!