SEAS Prestige ER18RNX-8 - H1456-08 7" Reed Paper Cone Woofer
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Product description
Long term power handling (RMS) is 80 Watts
Smooth, extended frequency response
Heavy copper ring below the T-shaped pole piece reduces nonlinear and modulation distortion
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Product details
Seas Prestige ER18RNX-8 - H1456-08 7" Reed Paper Cone Woofer
The ER18RNX is a 6,5’’ cone driver, developed for use as a long throw high fidelity woofer or woofer/midrange unit. Edge coated reed/paper pulp cone together with perfectly matched moving parts gives a smooth, extended frequency response.
Bumped back plate in the magnet system, together with the very long and light weight copper clad aluminum voice coil, allow extreme coil excursion with low distortion. Heavy copper ring below the T-shaped pole piece will reduce nonlinear and modulation distortion.
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 flow noise and cavity resonance to a minimum.
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Specifications
Article numberER18RNX-8
Woofer SeriesPrestige Series
Woofer TypeMidwoofer
Nominal Diameter7"
Power Handling (RMS)80 Watts
Power Handling (max)250 Watts
Impedance (Z)8 ohms
Sensitivity (SPL)88.5 dB 2.83V/1m
Frequency Response45 to 3,000 Hz
Voice Coil Diameter1.53"
Magnet Weight22.5 oz.
DC Resistance (Re)5.9 ohms
Voice Coil Inductance (Le)0.67 mH
Resonant Frequency (Fs)37 Hz
Mechanical Q (Qms)1.58
Electromagnetic Q (Qes)0.39
Total Q (Qts)0.32
Diaphragm Mass Inc. Airload (Mms)14g
Mechanical Compliance of Suspension (Cms)1.3 mm/N
Compliance Equivalent Volume (Vas)1.13 ft.³
Maximum Linear Excursion (Xmax)6 mm
Overall Outside Diameter6.93"
Overall Depth3.28"
Baffle Cutout Diameter5.72"
Bolt Circle Diameter6.54"
# Mounting Holes6
Mounting Hole Diameter0.2"
Dimensions and Mechanical Drawing

Frequency Response
