Eminence DELTAPRO18A 18In Rawframe Speaker
Eminence DELTAPRO18A 18″ Rawframe Speaker
Long throw subwoofer for very small vented boxes. Over-sized top plate and large pole vent help keep the coil cool.
Specification
- Nominal Basket Diameter: 18″, 457mm
- Nominal Impedance: 8 ohms
- Power Rating: Watts: 500W; Music Program: 1000W
- Resonance: 28Hz
- Usable Frequency Range: 37Hz – 0.25kHz
- Sensitivity: 96dB
- Magnet Weight: 67 oz.
- Gap Height: 0.38″, 9.53mm
- Voice Coil Diameter: 2.5″, 63.5mm
Thiele & Small Parameters
- Resonant Frequency (fs): 28Hz
- DC Resistance (Re): 5.3
- Coil Inductance (Le): 3.43mH
- Mechanical Q (Qms): 10.38
- Electromagnetic Q (Qes): 0.33
- Total Q (Qts): 0.32
- Compliance Equivalent Volume (Vas): 493.2 liters / 17.41 cu.ft.
- Peak Diaphragm Displacement Volume (Vd): 796cc
- Mechanical Compliance of Suspension (Cms): 0.25mm/N
- BL Product (BL): 18.9 T-M
- Diaphragm Mass Inc. Airload (MMs): 128 grams
- Efficiency Bandwidth Product (EBP): 84
- Maximum Linear Excursion (Xmax): 6.7mm
- Surface Area of Cone (Sd): 1188 cm2
- Maximum Mechanical Limit (Xlim): 15mm
Mounting Information
- Recommended Enclosure Volume: Sealed: N/a; Vented: 85-297 liters / 3-10.5 cu.ft.
- Driver Volume Displaced: 367 cu.in. / 6.01 liters
- Overall Diameter: 18″, 457.2mm
- Baffle Hole Diameter: 16.57″, 420.9mm
- Front Sealing Gasket: Fitted as standard
- Rear Sealing Gasket: Fitted as standard
- Mounting Holes Diameter: 0.28″, 7.1mm
- Mounting Holes B.C.D.: 17.25″, 438.2mm
- Depth: 8.13″, 207mm
- Net Weight: 17 lbs, 7.7 kg
- Shipping Weight: 20.5 lbs, 9.3 kgs
Materials of Construction
- Coil Construction: Copper 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
