Sennheiser 09969 Headphones User Manual

Headphones & Accessories 1
Open, circumaural headphones
HD 650
Publ.: 21.08.2003
Cat. No. 09969
The audiophile HD 650 is the ultimate in open, dynamic headphone
design. Developed from the award-winning HD 600, the HD 650s
feature improved materials for even better sound reproduction. They
captivate the listener with their expressiveness and emotion while
maintaining absolute precision and lifelike reproduction. Enjoy sound
in perfection!
Hand-selected, matched headphone systems with
very tight tolerances (+/- 1 dB)
Computer-optimised magnet systems for minimising
harmonic and intermodulation distortion
Extremely lightweight aluminium voice coils ensure
accuracy and fast transient response
Neodymium ferrous magnet systems for high
Specially developed acoustic silk provides uniform
damping over its entire frequency range as well as
minimising intermodulation and harmonic distortion
Elegant silver-titanium finish
High-quality metal mesh covers for superb open and
transparent sound
Extremely natural, spatial sound image
Balanced, crisp bass and deep bass reproduction
Authentic voice reproduction
Specially developed OFC copper cable,
Kevlar-reinforced, insensitive to handling noise
Gold-plated ¼” jack plug with adaptor lead to 3.5
mm jack plug
2-year guarantee
Technical data
Nominal impedance 300 Ohm
Contact pressure ca. 2,5 N
Weight w/o cable ca. 260g
Jack plug 6,3/3,5 mm stereo
Transducer principle
open, dynamic
Ear coupling circumaural
Cable length 3 m
Frequency response
10.....39500 Hz
Sound pressure level
103 dB (1 Vrms)
THD, total harmonic
0,05 %