EMINENCE DELTA PRO 18A
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- Cara Dušana 85, Niš
- Centralni magacin
DELTA PRO-18A
Each Eminence Professional model can be identified by its cast aluminum Eminence chassis that is lightweight and strong. Aluminum does not conduct the magnetic field out of the gap, thereby making the motor strength higher and the stray magnetic field lower. We coat each chassis and all metal components with an epoxy-acrylic finish using our in-house e-coat process. We can control the thickness of that coating to within 0.001”; critical when working with close tolerance transducer motor designs. We then add front and rear sealing gaskets on each model to accommodate front or rear loading.
There are 26 unique models available in our Professional series. Each was designed with a specific application in mind. From heavy-duty subwoofers, low distortion woofers, and super high-power woofers to lightweight neodymium transducers in truncated frames for line arrays, there is an Eminence Professional model for your application. Each product comes with a Seven Year Warranty against manufacturer’s defects*. With over 1,200 USA dealers and distributors worldwide you can easily find them in a store near you.
SPECIFICATION | |
Nominal Basket Diameter | 18", 457 mm |
Nominal Impedance* | 8 Ω |
Power Rating** | |
Watts | 500 W |
Music Program | 1000 W |
Resonance | 28 Hz |
Usable Frequency Range | 37 Hz - 0.2 kHz |
Sensitivity*** | 96 dB |
Magnet Weight | 67 oz. |
Gap Height | 0.38", 9.7 mm |
Voice Coil Diameter | 2.5", 64 mm |
THIELE & SMALL PARAMETERS | |
Resonant Frequency (fs) | 28 Hz |
DC Resistance (Re) | 5.3 Ω |
Coil Inductance (Le) | 3.43m H |
Mechanical Q (Qms) | 10.38 |
Electromagnetic Q (Qes) | 0.33 |
Total Q (Qts) | 0.32 |
Compliance Equivalent Volume (Vas) | 493.2 liters / 17.42 cu.ft. |
Peak Diaphragm Displacement Volume (Vd) | 796 cc |
Mechanical Compliance of Suspension (Cms) | 0.25 mm/N |
BL Product (BL) | 18.9 T-M |
Diaphragm Mass Inc. Airload (MMs) | 128 grams |
Efficiency Bandwidth Product (EBP) | 84 |
Maximum Linear Excursion (Xmax) | 6.7 mm |
Surface Area of Cone (Sd) | 1188 cm2 |
Maximum Mechanical Limit (Xlim) | 15. mm |
MOUNTING INFORMATION | |
Recommended Enclosure Volume | |
Sealed | N/a |
Vented | 85-297 liters / 3-10.5 cu.ft. |
Driver Volume Displaced | 0.212 cu.ft. / 6.01 liters |
Overall Diameter | 18", 457.2 mm |
Baffle Hole Diameter | 16.57", 420.9 mm |
Front Sealing Gasket | Yes |
Rear Sealing Gasket | Yes |
Mounting Holes Diameter | 0.28", 7.1mm |
Mounting Holes B.C.D. | 17.25", 438.2mm |
Depth | 8.13", 206.5 mm |
Net Weight | 17 lbs, 7.71 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 |