the whizzer can act both as a small decoupled cone and a waveguide for the voice coil/dustcap region. Coaxial speakers can be very good - I had a 12" Martin-Eminence 1114 coax with 80oz magnet and edgewound coil subjectively improve with the use of a 4-element LC allpass network between the crossover's lowpass section and the woofer. This seem to put the woofer in better time alignment with the compression driver diaphragm's plane. Modest priced well-designed fullrange without huge breakup peaks can save money and hassle over larger coaxial - especially in light of cap and coil costs. Maybe there should be a separate forum for coax? - when done well they offer similar advantages.
in the days of my youth, wideband whizzercone speakers had their mechanical crossovers stated:
Lafayette "Slender-Line" 12" (LS12 - clone) 2" edgewound voice-coil and mechanical crossover at 1800 cycles.
Electro-Voice LS15 Wolverine 35-13000 cycles. Mechanical crossover 4500 cps.
Electro-Voice LS12 Wolverine 40-13000 cycles. Mechanical crossover 4500 cps.
Electro-Voice LS8 Wolverine 55-13000 cps. Mechanical crossover 6000 cps.
Electro-Voice SP8B Radax Super Eight 35-150000 cps, Crossover (mechanical 4500 cps)
Electro-Voice SP12B Radax Twelve. 30-15000 cps. Crossover (mechanical 4500 cps)
Electro-Voice SP12 Radax Super-Twelve. 30-15000 cps. Crossover (mechanical at 4000 cps)
Knight KN 820 12" Speaker (EV ?) 4500 cps mechanical crossover.
University Diffusicone were listed with much lower mechanical crossover ~1000 cps - seems very low
in the days of my youth, wideband whizzercone speakers had their mechanical crossovers stated:
Lafayette "Slender-Line" 12" (LS12 - clone) 2" edgewound voice-coil and mechanical crossover at 1800 cycles.
Electro-Voice LS15 Wolverine 35-13000 cycles. Mechanical crossover 4500 cps.
Electro-Voice LS12 Wolverine 40-13000 cycles. Mechanical crossover 4500 cps.
Electro-Voice LS8 Wolverine 55-13000 cps. Mechanical crossover 6000 cps.
Electro-Voice SP8B Radax Super Eight 35-150000 cps, Crossover (mechanical 4500 cps)
Electro-Voice SP12B Radax Twelve. 30-15000 cps. Crossover (mechanical 4500 cps)
Electro-Voice SP12 Radax Super-Twelve. 30-15000 cps. Crossover (mechanical at 4000 cps)
Knight KN 820 12" Speaker (EV ?) 4500 cps mechanical crossover.
University Diffusicone were listed with much lower mechanical crossover ~1000 cps - seems very low
Last edited:
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.