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ER18RNX is an 18 cm (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 aluminium voice coil, allow extreme coil excursion with low
distortion.
Heavy copper ring below the T-shaped pole piece will reduce non linear and modulation
distortion.
Extremely stiff and stable injection moulded 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. er18rnx
Madisound Suggested Alignments:
Sealed box of 0.25 cubic feet for an F3 of 97Hz.
Vented box of 0.5 cubic feet with a 2" diameter vent by 6" long for an F3 of 53Hz.
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