Eminence Professional DELTA PRO-12A Speaker - 400 W RMS - 800 W PMPO

This table charts the specifications for the DELTA PRO-12A speaker*
Nominal Basket Diameter: 12-in, 305 mm.
* Nominal Impedance: 8 Ohms.
* Power Rating: *
Watts: 400 W.
* Music Program: 800 W.
* Resonance: 51 Hz.
* Usable Frequency Range: 52 Hz - 4.5 kHz.
* Sensitivity: 99.2 dB.
* Magnet Weight: 80 oz.
* Gap Height: 0.375 -in, 9.5 mm.
* Voice Coil Diameter: 2.5 -in, 64 mm. * Thiele & Small Parameters.
* Resonant Frequency (fs): 51 Hz.
* DC Resistance (Re): 5.71 Ohms.
* Coil Inductance (Le): 0.84 m H.
* Mechanical Q (Qms): 7.56.
* Electromagnetic Q (Qes): 0.37.
* Total Q (Qts): 0.35. * Compliance Equivalent
Volume (Vas): 81.7 liters / 2.89 cu. ft. * Peak Diaphragm
Displacement Volume (Vd): 242 cc. * Mechanical Compliance of
Suspension (Cms): 0.21 mm / N.
* BL Product (BL): 15.3 T-M. * Diaphragm Mass Inc.
Airload (MMs): 48 grams. * Efficiency
Bandwidth Product (EBP): 138. *
Maximum Linear Excursion (Xmax): 4.6 mm. * Surface Area of
Cone (Sd): 532.4 cm2. *
Maximum Mechanical Limit (Xlim): 13.7 mm. -----------------------------------Recommended Enclosure Volume; *
Sealed: 28-35 liters / 1- 1.25 cu. ft.
* Vented: 31-91 liters / 1.1 - 3.2 cu. ft.
* Driver Volume Displaced: 0.09 cu. ft. / 2.55 liters.
* Overall Diameter: 12.38 -in, 314.5 mm.
* Baffle Hole Diameter: 11.07 -in, 281.2 mm.
* Front Sealing Gasket: Yes.
* Rear Sealing Gasket: Yes.
* Mounting Holes Diameter: 0.27 -in, 6.9 mm. * Mounting Holes B. C. D.: 11.69 -in, 296.9 mm.
* Depth: 6.22 -in, 158 mm.
* Net Weight: 16.3 lbs, 7.39 kg.
* Shipping Weight: 18 lbs, 8.16 kgs. * Materials of Construction.
* Coil Construction: Aluminum voice coil.
* Coil Former: Polyimide former.
* Magnet Composition: Ferrite magnet.
* Core

Details

: Vented & extended core. -----------------------------------.
* Basket Materials: Die-cast aluminum basket.
* Cone Composition: Paper cone.
* Cone Edge Composition: Cloth cone edge.
* Dust Cap Composition: Solid composition paper dust cap. [Single]