FW305+15M4624G+XT25BG60 3way Crossover Design

FW305+15M4624G+XT25BG60 3way Crossover Design crossover “points” at about 400 Hz/ 1.9 kHz/ 3kHz

This design uses the Fostex 12″ woofer in 3.0 cf3 vented with two ports each 3″ x5″, add 1″ if using double flared. Scanspeak 15m midrange in 0.1 cf3 sealed. The tweeter is a high output Ring Radiator with phase plug. Two large caps on tweeter hi pass and one large midrange cap. 3.0 mH is your series inductor. System impedance mostly 5- 6 ohm in the midband. System output 91 dB+.

W22EX-001 + 12MU-4731T + D2905-9700 3way Passive Crossover Design

W22EX-001 + 12MU-4731T + D2905-9700 3way Passive Crossover Design

Seas Excel W22EX-001 + Scan-Speak 12MU-4731T + Scan-Speak D2905-9700 3way Passive Crossover Design

Anechoic design (flat response)

Woofer: 1.8 cubic foot vented with single port 3″ x 4″

Midrange: 0.25 cubic foot sealed

Notes: Crossover points @ about 350 Hz and 3.2 kHz. Two high pass and one midrange cap. Woofer in reverse polarity relative to midrange and tweeter.

P21WO20+ R2604-8330 2way Passive Crossover Design

P21WO20+ R2604-8330 2way Passive Crossover Design

Scan-Speak Classic 8″ P21WO20+ Discovery Double Magnet Ring Tweeter R2604-8330 2way Passive Crossover Design

No specified box alignment.

Additional Notes: Crossover point about 2.0 kHz. Strong nominal output ~ 88- 90 dB+. Very clean design with low parts count and single hi-pass cap. Some padding in hi-pass circuit.

S220-6-221 + C90-6-078 + D3004-6600 3way Passive Crossover Design

S220-6-221 + C90-6-078 + D3004-6600 3way Passive Crossover Design

S220-6-221 + C90-6-078 + D3004-6600 3way Passive Crossover Design

Anechoic (flat response)

Woofer: 2.0 cubic foot vented, single straight vent 3″ x 6″ length

Crossover points about 280 Hz and 3kHz.  High parts count on crossover. Woofer in inverse polarity relative to tweeter and midrange.

15W-8434G x2 + D2608-9130 MTM Passive Crossover Design

(2x) 15W_8434G and D2608_9130 Passive Crossover Design

Crossover Design for (2x) 15W-8434G in parallel and D2608-9130 HDS tweeter, MTM configuration

Box alignment: 0.3 cubic foot ported with single straight vent 2″ x 5″.

Additional Notes:  Flat response. Low parts count and single hi-pass cap. Minimal padding in hi-pass circuit. 15awg Steel Laminate inductor designated on lo-pass.

SB34NRX75-6 + P17WJ00 + D27TG35 3way Passive Crossover Design

SB34 + P17 + D27 Passive Crossover Design

Crossover Design for SB34NRX75-6 woofer, Scan P17WJ00 6.5″ mid-bass, and old Vifa D27TG35 tweeter in 3way configuration.

Woofer: 2.7 cubic foot vented, single straight port 3″ x 6″

Midrange: 0.7 cubic foot sealed chamber.

Additional Notes: Crossover points about 300 Hz and 2.5 kHz. Nominal output ~ 86-87 dB. Two large value hi-pass caps and high value midrange cap. Significant padding in hi-pass circuit. Note the woofer is in reverse polarity relative to the mid and tweeter.

SB17MFC358 x2 + D26069220 Passive Crossover Design

SB17MFC358 x2 + D26069220 Passive Crossover Design

Crossover Design for two SB17MFC35-8 in parallel and the D2606-9220 tweeter, MTM

No specified box alignment.

Additional Notes: Crossover point about 2.3 kHz. Very high nominal output ~ 93-94 dB. Two large value hi-pass caps. Significant padding in hi-pass circuit. -0- resistor value indicates optional padding to taste.