SEAS Extreme L22ROY2 - XM011-8 Subwoofer

Product description

The L22ROY is a High Fidelity woofer, intended for 3-way systems, closed box and transmission line designs. With an extremely stiff aluminium cone, it provides a tremendous bass precision.

Highlights

High power titanium voice coil former

Large rubber surround

Large FEA optimised magnet system

Reduce nonlinear and modulation distortion

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Product details

SEAS Extreme L22ROY2 - XM011-8 Subwoofer

A 2” diameter high power titanium voice coil former with a long copper winding for excellent force transfer and transient sound reproduction. A large rubber surround together with a textile spider allow for the outstanding linear excursion of the coil while keeping it well centered at high power. These characteristics result in a very low mechanical damping for better clarity bringing up the micro details in music.

A large FEA optimised magnet system with a very big center hole through the pole piece and precisely fitted copper parts for excellent linearity, high power handling and low distortion. Below the T-shaped pole piece there is a heavy copper ring and on top, a thick aluminium ring, they both help to reduce nonlinear and modulation distortion. The 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.

The frequency responses above show measured free field sound pressure in 0, 30, and 60 degrees angle using a 22L closed box. Input 2.83 Vrms, microphone distance 0.5m, normalized to SPL 1m.The dotted line is a calculated response in infinite baffle based on the parameters given for this specific driver. The impedance is measured in free air without baffle using a 2V sine signal.

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General

Product type Cone driver

Brand SEAS

Reference L22ROY2

Product code XM011-08

Informations

Product manufacturer range 22 cm, Extreme, Woofer

Nominal impedance 8 ohm

Dimensional category 8.5 inch

Frequency coverage type Sub, Low, Midbass

Manufacturer sensitivity 83 dB

Calculated sensitivity 82.2 dB

Nominal power handling 250 W

Max power handling 500 W

Bandwidth 20÷2000 Hz

Fundamental parameters

Sd 221 cm²

Mms 84 gr

Cms 400 µm/N

Rms 3.56 kg/s

Le 0.4 mH

Re 6.2 ohm

Small signal parameters

Fs 27 Hz

Qes 0.49

Qms 4.11

Qts 0.44

Vas 27 L

Datas

Flux density 1.15 T

Xmax ±11.5 mm

Calculated Xmax ±14.1667 mm

Xvar, Xmech, Xlim ±23 mm

EBP 55 Hz

Fs / Qts 61 Hz

Vas * Qts² 5.23 L

Calculated efficiency 0.11 %

Weight ~6.5 kg

Demodulation ring Yes

Dimensions

Voice coil diameter 2 inch

Winding depth 31 mm

Gap height 8 mm

Outside diameter 222 mm

Baffle cutout diameter 193.4 mm

Front thickness 10.5 mm

Depth after front 118 mm

Shape & Materials

Front chape Cylindrical

Magnet type Ferrite

Basket masterial Aluminium

Winding material Copper

Voice coil former Titanium

Surround shape One roll

Surround material Rubberr