With HD-430
Sennheiser offers "new generation" headphones featuring improved
magnet and sound-surround diaphragm design. Said to be "virtually
distortion free", the headphones weighing only seven ounces provide audio
frequency response from 16 to 20,000 Hz.
Hearmonic distortion is put at less than 0,5% (DIN 45 500). This performance is
achieved by use of a new diaphragm design and of a more powerful magnet
weighing one-third as much as those made of conventional materials. Model
HD-430 is also the first Sennheiser headphone to combine an open air design
with circumaural ear cushions which lightly surround the outer ear to separate
the ear from direct contact with the inner foam pad and yet permit all the
advantages of openxerts a handband pressure of only about three Newtons which
is an index of listener comfort. Typically. Open air headphones have half the
headband pressure of conventional closed headphones, says Sennheiser. Impedance
is 600 ohms per channel, and sensitivity (nominal spl at 1 kHz) is 94 dB at 1
mW input. HD-430 is provided with a 10-foot stranded-steel cable with stereo
phone plug.
Performance
A very comfortable
pair of headphones with very light pressure on head and ears. Suspension
headband is somewhat difficult to adjust for optimum fit. Sound quality is
slightly bright. Definition is exceptional. Efficiency is much higher than
average, and headphones can be driven to high sound levels with relatively
little power. Extremaly clean sound.
Specifications
Frequency
Range: 16 Hz - 20 kHz
Impedance: 600 Ω /channel
Nominal Sensitvity
SPl (at 1 kHz): 94 dB (1 mW input)
Harmonic
Distortion: less than 0,5%
Weight: 7 ounces
Cable: 10 foot cable and stereo phone plug
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