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Seas P18RNX/P (H1350) 7" Polypropylene Cone Woofer with Phase Plug
8 ohm
Cast frame
Free Leap Crossover Design
The P18RNX/P is an 18 cm (6.5") cone driver, developed for use as a long throw high fidelity woofer or woofer/midrange unit.A polypropylene based cone ensures smooth frequency response and low distortion, and the adaptive rubber surround provides an ideal match to the cone over the total frequency range.
The large magnet system gives good transient response, and the bumped back plate together with the very long, and light weight copper clad aluminum voice coil allow for extreme coil excursion with low distortion.
The extremely stiff and stable injection molded metal basket, keeps the critical components in perfect alignment. Large windows in the basket both above and below the spider reduce sound reflection, air fl ow noise and cavity resonance to a minimum.
Specifications:
Nominal Impedance 8 Ohms
Recommended Frequency Range 40 - 2500 Hz
Short Term Power Handling *250 W
Long Term Power Handling *80 W
Characteristic Sensitivity (2,83V, 1m) 88.0 dB
Voice Coil Diameter 39 mm
Voice Coil Height 18 mm
Air Gap Height 6 mm
Linear Coil Travel (p-p) 12 mm
Maximum Coil Travel (p-p) 22 mm
Magnetic Gap Flux Density 1.0 T
Magnet Weight0.64 kg
Total Weight1.92 kg
Voice Coil Resistance 6.1 Ohms
Voice Coil Inductance 1.18 mH
Force Factor 7.6 N/A
Free Air Resonance 44 Hz
Moving Mass 13.1 g
Air Load Mass In IEC Baffle 0.82 g
Suspension Compliance 1.0 mm/N
Suspension Mechanical Resistance 2.53 Ns/m
Effective Piston Area 126 cm2
VAS 21 Litres
QMS 1.52
QES 0.41
QTS 0.32
Frame diameter 176mm
Cut out diameter 145.2mm
Depth 78mm
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