Seas Extreme L26RO4Y (XM004-04S) 10" Aluminum Cone Subwoofer

Seas 10" Aluminum Cone Subwoofer L26RO4Y (XM004-04S)- 4 layer VC- 269mm- 4 ohm

Spec Sheet PDF

500 watts short term power handling!

Now with new basket design! The L26RO4Y subwoofer builds upon the already excellent chassis, magnet system, cone, and surround of our L26ROY. An all new FEA designed spider and 4 layer voice coil wound on a stiff glass fibre former have been employed, 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.

Advantages of 4-layer Voice Coil:

• High power handling capabilities. The multi-layer voice cpil can generally handle higher power without distorting.
• Low Distortion. Speakers with multiple layers of voice coils typically have lower distortion levels from better heat dissipation.
• Extended frequency response. The 4-layer voice coil design often allows the speaker to operate over a wider frequency range.
• Durability. 4-layer voice coils are generally stronger and more durable over time. 
• High efficiency. The 4-layer voice coil design often increases the woofer output.

Developed in cooperation with Linkwitz Laboratories in Corte Medera, California, the L26RO4Y saw its first application in the highly acclaimed Linkwitz ORION open baffle loudspeaker, and is currently used in the Linkwitz LX521. The L26RO4Y substantially improved the ORION's bass performance and dynamic capabilities, and has since been incorporated in all Linkwitz lab designs. We at SEAS are also very proud that the ORION, LX521, LXstudio and LXmini+2 loudspeakers use all SEAS drive units!

 "There is more to a woofer than its published TS small signal parameters and X-max, derived from mechanical measurements. In an 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

The specifications suggest using this woofer with the matching passive raditor SL26R. You could also use this woofer in either a sealed box or open baffle, but you will need to use an equalizer or bass boost to extend the low end. Using in in 0.6 cubic foot sealed box without any boost will give you an F3 of about 70Hz. Using this sealed box in a vehicle with 6dB of cabin gain will get down to 30Hz. Modeled in BassBox. 

This woofer is used in the the famous Linkwitz LX521 open baffle 4-way system.

• Extremely stiff and rigid aluminium cone gives tremendous bass precision
• The cone and the long throw low loss rubber surround show no sign of the familiar cone edge resonance and distortion associated with soft cones
• Lead-out wires symmetrically stitched to the spider to avoid resonances
• Total suspension designed to assure stability for extreme excursions
• 4-layer, extremely long, high temperature voice coil wound on an glassfiber voice coil former gives a high power handling capacity
• Cu-cap around the pole pieces 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