Premium Line 6 1/2" Midwoofer
PL180.8
Estimated pricing information:
Price per pair: $110 - $140
Price per unit: $55 - $70
Plus actual shipping
 

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Photo Sharing and Video Hosting at Photobucket

Photo Sharing and Video Hosting at Photobucket

Photo Sharing and Video Hosting at Photobucket

Photo Sharing and Video Hosting at Photobucket

Photo Sharing and Video Hosting at Photobucket

Photo Sharing and Video Hosting at Photobucket

Photo Sharing and Video Hosting at Photobucket

Photo Sharing and Video Hosting at Photobucket
Due to the stiffer than expected suspension I took a more in depth look at how the compliance of a midwoofer impacts the transfer function, max spl and group delay and thought I would share the results...

Yellow has the loosest suspension at 2mm/N (loose target)
Grey has a moderate suspension at .77mm/N (earlier prototype)
Orange has a stiff suspension at .44mm/N (regression on the latest prototype)
Red is the Dayton RS180-8
Green is the exceptional but sadly discontinued AA Poly 6.5 t/s on zaph's site

The two enclosure sizes are .8 cuft tuned to 38hz and .3 cuft tuned to 45hz

  • Suited for small ported and transmission line designs

  • 8 ohms (2 ohm version in the works)

  • Phase plug on an ended pole piece

  • Projected Power handling 160-200 watts RMS

  • Voice coil diameter 1.5"

  • Xmax: 12mm (24mm peak to peak)

  • Very high sensitivity for a high excursion design ~87dB/W

  • Careful motor optimization via FEA methods for a symmetrical BLintegral vs. X

  • 6mm thick short path under the top plate designed to help correct the typical negative inductance centering position found in overhung designs.  This ring was not designed to reduce overall inductance.

  • Suggested low pass LR4@1800-2200Hz

  • Dimensions: Almost 4.2" deep