Product Brochure

LEGENDARY GERMAN
ENGINEERING
quadral GmbH & Co. KG · Am Herrenhäuser Bahnhof 26 · 30419 Hannover · Germany
Special for IW-621
✔ IW-611 is a dipole speaker with 2 tweeters (1 tweeter can be changed by
180 degree)
✔ The triangle acoustic foam dramatically linearizes the tweeter and optimizes
the off-axis performance
IWS-641 / IWS-841
✔ Sealed MDF chamber
✔ Strong aluminum baffl e wall with CNC milling optimizes noise vibration and
sound refl ection
✔ Woven glass  ber cone with powerful driver (90mm dimension of motor
structure), strong magnet and large voice coil (32mm)
✔ Short circuit ring made from aluminum which reduces distortion at high power
level and enhances the dynamic performance
✔ The tweeter’s waveguide achieves controllable dispersion and provides an
optimized off-axis and power response.
✔ Separate midrange chamber
✔ Housing made of strong MDF board
✔ Gold plated speaker connecting terminal
✔ Magnetic cover, paintable, slim sized