Seas L26RO4Y D1004-04 Linkwitz Orion 3.4 & Orion 3.5 10” SubWoofer. Discounted Full Orion Driver Sets and information pages from Linkwitz Labs are available here.
Designed jointly by Siegfried Linkwitz and SEAS Norway and selected for the legendary Orion Dipole Open Baffle speaker. It features an extremely stiff and rigid 10" aluminium cone giving tremendous bass precision. The cone and the extended long throw low loss rubber surround show no sign of the familiar cone edge resonance and distortion associated with soft cones. A truly outstanding drive unit.
“There is more to a woofer than its published TS small signal parameters and X-max, derived from mechanical measurements. In the Orion's open baffle, a woofer operates in the large signal domain; and its distortion, dynamic stability and limiting behavior determine the sound. An open baffle is the most demanding and difficult environment for a long throw woofer” --- Siegfried Linkwitz.
To meet these cutting edge demands, the L26RO4Y subwoofer was developed from the already excellent chassis, magnet system, cone, and surround of the L26ROY. An all new FEA designed spider and 4 layer voice coil is wound on a stiff glass fibre former, resulting in a driver with ultra long throw, very low distortion, and extremely stable mechanical operation under all conditions including open baffle systems. The low Qts and Fs are ideally suited for active open baffle bass systems, but the L26RO4Y can also produce excellent results in enclosure based subwoofer and multi-way systems.
Design features include:
Lead-out wires are symmetrically stitched to the spider to avoid resonances. Total suspension is designed to assure stability for extreme excursions.
4-layer, extremely long, high temperature voice coil wound on an Glassfibre voice coil former gives a high power handling capacity.
Copper cap around the pole pieces to reduce non linear and modulation distortion and increase overload margin.
Extra large magnet system provides high efficiency and low Q. 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.
A Product Datasheet can be downloaded by clicking on the appropriate .pdf logo (where shown).
|Seas Driver Range||Seas Design|
|Nominal Impedance||4 ohms|
|Nominal Power RMS||250|
|Vas ( l)||46|
|Nominal Free Air Resonance Fs||24 Hz|
|Sensitivity (2.83V/1m)||85.50 dB|
|Nominal Rdc||3.30 ohms|