Whitepaper

DALI A/S [phone] www.dali-speakers.com
6
DRIVERS
In order to achieve our targets for
highest sound pressure level combined
with lowest possible distortion in this
compact cabinet, neither a closed
chamber nor a bass reflex cabinet
would do. Instead the subwoofer
features two passive side-mounted
radiators. These can be tuned to reach
further down in the frequency area than
a bass port would be able to do in this
size of cabinet. In this design the tuning
frequency is 31.5Hz. And compared to
a closed chamber the passive radiators
ensure an output which is 6dB higher
at 20Hz. On top of that the risk of port
turbulence is eliminated.
ACTIVE WOOFER
DALI SUB P-10 DSS is equipped with
an active 10” down-firing woofer. The
cone is a sandwich construction with
carbon fibre at the front paired with
paper pulp at the back. The geometry
and the material applied eliminate
the need for a dust cap. The result is
a rigid cone with superior breakup
characteristics while at the same time
being very lightweight and agile. Indeed
these are prerequisites for a precise
bass reproduction, rendering all the
dynamics of the signal.
The 4-layer voice coil is mounted
on an aluminium former. In order to
reduce potential micro-resonance,
the inside of the former has been
lined with a thin paper pulp. Voice coil
diameter is a solid 63.5 mm to ensure
maximum power handling. A large
2-piece ferrite magnet with a vented
pole piece ensures that the voice coil
is kept in a tight grip, even when the
party gets going.