DELTA PRO Serie 400W
Recommended for professional audio in both sealed and vented enclosures. Ideal for full-range, mid/hi, andmonitor wedges.
SPECIFICATION
* Nominal Basket Diameter 12", 304.8mm
* Nominal Impedance* 8 ohms
* Power Rating** Watts 400W / Music Program 800W
* Resonance 51Hz
* Usable Frequency Range*** 52Hz-4.5kHz
* Sensitivity 99.2
* Magnet Weight 80oz.
* Gap Height 0.375", 9.53mm
* Voice Coil Diameter 2.5", 63.5mm
THIELE & Small Parameters
* Resonant Frequency (fs) 51Hz
* DC Resistance (Re) 5.71
* Mechanical Q (Qms) 7.56
* Electromagnetic Q (Qes) 0.37
* Total Q (Qts) 0.35
* Compliance Equivalent Volume (Vas) 81.7 liter
* Peak Diaphragm Displacement Volume 242cc
* Mechanical Compliance of Suspension (Cms) 0.21mm/N
* BL Product (BL) 15.3 T-M
* Diaphragm Mass inc. Airload (Mms) 48 grams
* Efficiency Bandwidth Product (EBP) 138
* Maximum Linear Excursion (Xmax) 4.6mm
* Surface Area of Cone (Sd) 532.4 cm2
* Maximum Mechanical Limit (Xlim) 13.7mm
MOUNTING Information
* Recommended Enclosure Volume
Sealed 28-35 liters/1-1.25 cu.ft.
Vented 31-91 liters/1.1-3.2 cu.ft.
* Overall Diameter 12.38", 314.5mm
* Baffle Hole Diameter 11.07", 281mm
* Front Sealing Gasket fitted as standard
* Rear Sealing Gasket fitted as standard
* Mounting Holes Diameter 0.27", 6.9mm
* Mounting Holes B.C.D. 11.57", 293.8mm
* Depth 6.22", 158mm
* Net Weight 16.3 lbs., 7.4kg
* Shipping Weight 18 lbs., 8.2 kg
MATERIALS of Construction
* Aluminum voice coil
* Polyimide former
* Ferrite magnet
* Vented and extended core
* Die-cast aluminum basket
* Paper Cone
* Cloth cone edge
* Solid composition paper dust cap
