18-inch Drivers
18X451-2
The 18X451-2 is an 18-inch neodymium woofer with an optimised magnet for high-power subwoofer and bass cabinet systems. It handles 800 W AES (1600 W program) with 97 dB sensitivity and a 36 Hz–2.0 kHz response. 114.5 mm voice coil, 11.25 mm Xmax. Overall diameter 465 mm, depth 215 mm, weight 16.15 kg. Klippel LA DPM measured T/S parameters. Program power defined as 3 dB greater than AES power.
Specifications
- Nominal Diameter
- 18"
- Nominal Impedance
- 8 ohm
- Sensitivity (1W/1m)
- 97 dB
- Frequency Range
- 36 Hz - 2.0 kHz
- Voice Coil Diameter
- 114.5 mm
- Net Weight
- 16.15 kg
GENERAL SPECIFICATIONS
Nominal Diameter | 18" |
Nominal Impedance | 8 ohm |
Program Power | 1600 W |
Power Handling (AES) | 800 W |
Sensitivity (1W/1m) | 97 dB |
Frequency Range | 36 Hz - 2.0 kHz |
Effective Diaphragm Diameter | 400 mm |
Minimum Impedance | 4.8 ohm |
Voice Coil Diameter | 114.5 mm |
Voice Coil Material | PISV |
VC Winding Depth | 30 mm |
Number of Layers | 2 |
Kind of Layer | out / in |
Top Plate Thickness | 15 mm |
Magnet Size | 253 x 30 mm |
MOUNTING INFORMATION
Overall Diameter | 465 mm |
Bolt Circle Diameter | 446 mm |
Bolt Hole Diameter | 7.0 mm |
Mount Buffer Cut-out | 422 mm |
Depth | 215 mm |
Net Weight | 16.15 kg |
Shipping Weight | 18.40 kg (1 pc/ctn) |
Shipping Box | 497 x 497 x 255 mm |
THIELE-SMALL PARAMETERS
Fs (Resonance Frequency) | 36 Hz |
Re (DC Resistance) | 4.8 ohm |
Qms (Mechanical Factor) | 17.16 |
Qes (Electrical Factor) | 0.395 |
Qts (Total Factor) | 0.386 |
BL Factor | 28.70 T.m |
Mms (Moving Mass) | 255.78 g |
Vas (Equivalent Air Load) | 128.91 liters |
Sd (Piston Area) | 1194.59 cm2 |
Xmax (Linear Excursion) | 11.25 mm |
Half-space Efficiency | 1.91 % |
