15 in. Magnum Series Woofer 650 watt

 Eminence response curves are measured under the following controlled test conditions:

•  All speakers are tested at 1W/1m using a variety of test set-ups for  the appropriate impedance
• LMS using 0.25" supplied microphone (software calibrated) mounted 1m from wall/baffle
• 2ft. X 2 ft. baffle is built into the wall with the speaker mounted flush against a steel ring for minimum diffraction
• Hafler P1500 Trans-Nova amplifier
• 2700 cu. ft. chamber with  fiberglass on all six surfaces (three with custom-made wedges)

To download spec sheets: Magnum 18 LF

Materials of Construction

• Kapton coil former for increased rigidity and thermal protection

• Polyamide-imide coated one-layer, edgewound copper voice coil  for durability, increased sensitivity, and power-handling

• Ferrite Magnet

• Die-cast aluminum basket for rigidity

• Paper cone

• Cloth cone edge with deep sinusoid corrugations for extended travel

• Copper shorting ring to minimize distortion

• Aluminum phasor/heatsink to transfer heat from the motor structure and  smooth response

• Screened dust cap for enhanced cooling and protection

**For some transducers, the traditional method of specifying the limit of linear cone excursion as the amount of voice coil overhang is very conservative. In such cases, a measure of cone excursion based on the distortion produced can provide more information about how to best utilize a speaker. To this end, X10 is a measure of the one-way cone excursion that causes the speaker's output sound pressure to contain 10% total harmonic distortion. This measurement is taken at the speaker's resonant frequency in free air.