US-Euro countries are in leading position in world speaker field. Swans engineers hoped that Chinese
can work out high-quality loudspeakers. We original thought to work out a small caliber
loudspeaker that can produce grand midbass field in a small box. Its sound
should be neutral and noble, and it should be a work of art. This D series
loudspeaker basic satisfied our past expectation right now.

D series loudspeaker applied a series of latest design principles. Leading field Small/Thiele parameter optimize design technology! Denmark P.M.K double layer mica high strength integrated film
membrane! Germany manufactured anti-fatigue high loss natural rubber fold ring!
Britain manufactured high penetrated high stable bracket! Swans patent double
magnetic circuit full coupling high power compound anti-magnet magnetic
ciruit system and high magnetic energy neodymium iron boron magnet!

High power 100mm heat-resistant copper covered aluminum circuit voice coil match with non-eddy
loss Kapton voice coil framework! Finite element precision computer simulation design
integration high density aluminum trough frame! Swans special long stroke linear
displacement symmetry low distortion actuation magnet field design!

Sound Features:
Tremendous power handling, well response of low frequency, wide trends, low distortion of
low frequency, abundant and forceful bass. This unit suit for top class speaker system,
top class home theater system and top class ultra-bass unit.