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A revolutionary drive unit material is only the start of
the technological innovations that make this new Quad
subwoofer a fine addition to any surround or stereo
system.
The new ‘tri-lam’ cone is a composite construction
comprising of a hydralically moulded and thermoset
lamination of three materials. The inner layer is bi-
directional weave carbon fibre, the two outer layers are
bi-directional weave glass fibre. The outer rim of the
cone incorporates rim-edge stiffening within the design.
The resulting cone is extremely rigid and lightweight,
ensuring very low energy losses, even at extremes of
volume, and without the delays associated with high-
mass paper pulp or plastic cones commonly used in
subwoofer drivers.
Further innovations include a powerful 300WRMS
amplifier module coupled with a brand new filter stage.
A microprocessor controlled filter section has been
developed adjustable between 35 and 85Hz in 10Hz
steps – each having a discrete path for the cleanest
signal possible.
A full function remote control allows the user to calibrate
the subwoofer (crossover, volume and phase) from the
listening position and store up to four settings in the
memory, which can be recalled at the touch of a button.
Finished in the same choice of high quality piano
lacquered veneers as the existing L-series models, the L-
subwoofer is as attractive a piece of furniture as it is
accomplished as a reference subwoofer.
The Technology
L Subwoofer