The PRO 005 is a very long throw, high power handling eight inch woofer. Here is a picture of the parts I use to build it:

And the end result:

		A: Outer diameter		8 1/4"
		B: Hole diameter		7 1/8"
		C: Total depth		3 9/16"
		D: Magnet diameter		3 3/8"
		E: Magnet assy. ht.		1 5/16"
		F: Mounting diameter		7 3/4" (8)
		G: Rabbett depth		5/32"
		H: Nominal VC dia.		1.0"
		J: Winding length		0.95"
		K: Gap height		0.25"

Fs		26 Hertz
Re		3.35 ohms
Ie		1.0 mH
Xmax		0.35"
Qm		5.7
Qe		0.51
Qt		0.47
Vas		55 liters
Sensitivity		88 dB/1w/1m
Power		200 w RMS

• Magnet structure "potting"
• Magnetic shielding