Sony MDR NC20 - Troubleshooting; No Sound Issues; Muffled Sound; Specifications

ee
Troubleshooting
No sound
e
Check
the
connection
of
the
headphones
and
the
AV
equipment.
e
Check
that
the
connected
AV
equipment
is
turned
on.
e Turn up the volume of the connected AV
equipment.
Muffled sound
e Turn down the volume of the connected AV
equipment.
e Replace the battery.
Specifications
General
Type Dynamic, closed
Driver units 30 mm dia: dome type
Impedance 24 ohms at 1 kHz
(when the power is on)
56 ohms at 1 kHz
(when the power is off)
Sensitivity 102 dB/mW (when the power is on)
100 dB/mW (when the power is off)
Frequency response
16 — 22,000 Hz
Frequency range of active noise attenuation
40 — 1,500 Hz more than 10 dB at
300 Hz
Input cord 0.5m cord witha gold-plated
microplug
Power source DC 1.5 V, 1 x R03 (size AAA) battery
Mass Approx. 175 g (6.2 oz) including
battery
Supplied accessories
Connecting cord 1m (39 */s in.) (a gold-plated micro
jack — a gold-plated L shaped stereo mini plug) (1)
Plug adaptor for in-flight use (single /dual) (1)
Carrying case (1)
Operating instructions (1)
Design and specifications are subject to change
without notice.