Description
12" Cast Frame Driver, 8 Ohm, 400 Watt
The Eminence Delta Pro-12A 12" cast frame speaker is recommended for professional audio in sealed, vented, and horn-loaded enclosures. Ideal for full-range, mid/hi, and monitor wedges. Extremely efficient through the midrange, but with a surprisingly strong bass kick as well. Made in the USA. 7-year manufacturer's warranty!
Features:
- Kapton coil former
- Polyamide-imide coated copper voice coil
- Die-cast aluminum frame
- Ferrite magnet
- Vented and extended pole piece
- Paper cone
- Cloth M-roll surround
Specifications:
- 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***: 99.2dB
- Magnet Weight: 80 oz.
- Gap Height: 0.37", 9.53mm
- Voice Coil Diameter: 2.5", 63.5mm
- THIELE & SMALL PARAMETERS
- Resonant Frequency (fs): 51Hz
- DC Resistance (Re): 5.71
- Coil Inductance (Le): 0.84mH
- Mechanical Q (Qms): 7.56
- Electromagnetic Q (Qes): 0.37
- Total Q (Qts): 0.35
- Compliance Equivalent Volume (Vas): 81.7 liters / 2.9 cu.ft.
- Peak Diaphragm Displacement Volume (Vd): 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.
- Driver Volume Displaced: 155.5 cu.in. / 2.55 liters
- 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", 6.98mm
- Mounting Holes B.C.D.: 11.69", 296.93mm
- Depth: 6.22", 158mm
- Net Weight: 16.3 lbs, 7.4 kg
- Shipping Weight: 18 lbs, 8.2 kgs
- MATERIALS OF CONSTRUCTION
- Coil Construction: Aluminum voice coil
- Coil Former: Polyimide former
- Magnet Composition: Ferrite magnet
- Core Details: Vented and 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