System
IE 3 in-ear headphones
EK 300 IEM G2 stereo receiver
RF characteristics
Modulation wideband FM stereo, MPX pilot tone
Frequency ranges 518–554, 626–662, 740–776, 786–822, 830–866 MHz
Transmission/receiving frequencies 8 channel banks with up to 12 factory-preset channels each
1 channel bank with up to 12 freely selectable channels
(1440 frequencies, tunable in steps of 25 kHz)
Switching bandwidth 36 MHz
Nominal/peak deviation ±24 kHz/±48 kHz
Frequency stability ≤ ±15 ppm
AF characteristics
Noise reduction system Sennheiser HDX
AF frequency response 40–15,000 Hz
MPX pilot tone (Frequenz/Hub) 19 KHz/±4 kHz
S/N ratio (at 1 mV and peak deviation) ≥ 91 dB(A)
THD (at nominal deviation and 1 kHz) ≤ 0.9 %
General data
Temperature range –10 °C to +55 °C
Dimensions of carrying case [mm] 380 x 370 x 70
Weight of carrying case approx. 3000 g
Frequency response 40–20,000 Hz
Max. SPL 118 dB SPL
Impedance 32 Ω
RF characteristics
Receiver principle non diversity
Sensitivity (with HDX, peak deviation) < 2.5 μV at 52 dBArms S/N ratio
Adjacent channel rejection ≥ 70 dB
Intermodulation attenuation ≥ 70 dB
Blocking ≥ 80 dB
Squelch 4 steps: OFF
LO: 5 dBμV
MID: 15 dBμV
HI: 25 dBμV
Pilot tone squelch (MPX pilot tone) can be switched off
AF characteristics
Headphone output 3.5 mm jack socket
AF output voltage (at peak deviation 1 kHzAF) PHONES 2 x ≥ 100 mW at 32 Ω
Overall device
Power supply 2 AA size batteries, 1.5 V
Nominal voltage 2.4 V
Max. power consumption at nominal voltage approx. 190 mA (2 x 30 mW)
Power consumption with switched-off receiver ≤ 250 μA
Operating time (with batteries) 6–10 h (depending on volume level)
Operating time (with BA 2015 accupack) 6–10 h (depending on volume level)
Dimensions [mm] 82 x 64 x 24
Weight (incl. batteries) approx. 170 g