Sennheiser HMEC 350 Support and Manuals
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Popular Sennheiser HMEC 350 Manual Pages
Instructions for Use - Page 3
....
• Do not attempt to repair the headset yourself. All other parts of the headset whose replacement is described in this manual. The HMEC 350, HMEC 352, HMEC 355, HMEC 355-C, HMEC 356, HMEC 372, HMEC 450 and HMDC 372 are pilot headsets with closed ear protector headphones and NoiseGard™ active noise compensation for example, those from engines, propellers, warning alarms, etc.) may...
Instructions for Use - Page 4
... features
HMEC 350 NoiseGard™ headset • New active headset with effective attenuation of external noise across the entire
frequency spectrum due to NoiseGard™ active noise compensation • NoiseGard™ active noise compensation provides clear communications even in the
noisiest environment • Improved acoustic properties: The frequency response of the headphones has...
Instructions for Use - Page 5
... warranty (HMEC 450: 10-year warranty)
Product variants
HMEC 352 NoiseGard™ headset The HMEC 352 differs from the HMEC 350 in the following features: • Connection of microphone and NoiseGard™ electronics via PJ-068 plug
HMEC 355 NoiseGard™ headset The HMEC 355 differs from the HMEC 350 in the following features: • No Mono/Stereo switch • Connection of headphones...
Instructions for Use - Page 6
...™ electronics via XLR-3 plug
HMEC 356 NoiseGard™ headset The HMEC 356 differs from the HMEC 350 in the following features: • Connection of headphones, microphone and NoiseGard™ electronics to the on-board
power supply system (12-35 V DC) via 6-pin Redel plug
HMEC 372 NoiseGard™ headset The HMEC 372 differs from the HMEC 350 in the following features: • No...
Instructions for Use - Page 7
... HMEC 450 differs from the HMEC 350 in the following features: • Stylish silver design • Leatherette ear cushions • Headband padding can be buttoned HMDC 372 NoiseGard™ headset The HMDC 372 differs from the HMEC 350 in the following features: • No Mono/Stereo switch • Coiled cable • M-87/AIC dynamic microphone and low impedance headphones...
Instructions for Use - Page 9
... m. Adapter cables (except for HMEC 352, HMEC 355 and HMEC 356) Sennheiser offers special adapter cables for powering two headsets via the cigarette lighter socket • ACX-22 adapter cable for connecting the NoiseGard™ electronics of the HMEC 350, HMEC 355-C, HMEC 372, HMEC 450 and HMDC 372 headsets. No. 500357) (except for HMEC 352, HMEC 355 and HMEC 356) Battery pack with a right...
Instructions for Use - Page 10
... for HMEC 350 and HMEC 450
Connecting cable for HMEC 352
Connecting cable for HMEC 355
Connecting the headsets
Connecting cables for headsets HMEC 350 and HMEC 450 headsets: 1 ¼" (6.35 mm) stereo jack plug for connecting the headphones 1 PJ-068 jack plug for connecting the microphone 1 XLR-3 plug for connecting the power supply for the NoiseGard™ electronics
HMEC 352 headset: 1 ¼...
Instructions for Use - Page 12
... left 2 Audio Hi right 3 Audio Lo
1 Microphone Lo 2 Audio Hi 3 Microphone Hi 4 Audio Lo
HMEC 352
HMEC 350
1 Power supply NoiseGard™ (DC+) 1 Not assigned!
2 Microphone Hi
2 Microphone Hi
3 Microphone Lo / DC -
3 Microphone Lo
* Note: Battery powering for the NoiseGard™ system of HMEC 350, HMEC 355-C, HMEC 372, HMEC 450 and HMDC 372 only via BP-04 battery pack
12
Instructions for Use - Page 14
...-board system
The NoiseGard™ electronics can be mounted by a 1 A fuse. The HMEC 350, HMEC 355-C, HMEC 372, HMEC 450 and HMDC 372 headsets are supplied with operating voltages between 12-35 V DC.
Connecting the headset to perform this type of installation. XLR-3 socket
HMEC 350 and HMEC 450 headsets:
̈ Connect the ¼" (6.35 mm) stereo jack plug for the headphones and the PJ...
Instructions for Use - Page 16
... battery compartment. ̈ Insert four AA size alkaline-manganese batteries (IEC LR 6). However, to the battery pack (except HMEC 352, HMEC 355 and HMEC 356)
The NoiseGard™ electronics of the HMEC 350, HMEC 355-C, HMEC 372, HMEC 450 and HMDC 372 headsets can be powered via the BP-04 battery pack (see "Recommended accessories" on and the battery capacity is...
Instructions for Use - Page 17
...setting the ON/OFF switch to ON. HMEC 355-C headset: Connect the XLR-5 plug for the headphones and the microphone to the U-174/U socket of your intercom. HMEC 372 and HMDC 372 headsets: Connect the U-174/U jack plug for the headphones... of the battery pack. ̈ HMEC 350 and HMEC 450 headsets: Connect the ¼" (6.35 mm) stereo jack plug for
the headphones and the PJ-068 jack plug for...
Instructions for Use - Page 18
ACX-1
ACX-2
ACX-11
ACX-22
18
3. Connecting the headset via a cigarette lighter adapter cable (except HMEC 352, HMEC 355 and HMEC 356)
Sennheiser offers special adapter cables with XLR-3 socket for connecting the NoiseGard™ electronics of the HMEC 350, HMEC 355-C, HMEC 372, HMEC 450 and HMDC 372 headsets to the on-board power supply via the cigarette lighter socket: • ACX...
Instructions for Use - Page 20
... the microphone towards the corner of the mouth. Bend the microphone boom so that the microphone is placed at the corner of the mouth The HMEC 350, HMEC 352, HMEC 355, HMEC 355-C, HMEC 356, HMEC 372 and HMEC 450 headsets feature a flexible microphone boom.
Instructions for Use - Page 29
... (except HMEC 355, HMEC 355-C and HMEC 356). ̈ Check to see if the headphone jack plug is set to stereo operation. ̈ Set the Mono/Stereo switch to "Mono".
29
Problem Active noise compensation but very low volume communication
Active noise compensation but reduced intelligibility
Communications in one ear only (only HMEC 350, HMEC 352, HMEC 356 and HMEC 356)
Possible...
Instructions for Use - Page 31
...
Operating time of battery pack (except HMEC 352 and HMEC 356)
HMEC 350
Ȋ HMEC 352
Ȋ HMEC 356
Ȋ HMEC 450
1.5 m, unilateral
370 g
12-35 V DC
27 mA (zero signal current), max. 80 mA
500 mA thermo fuse
6.35 mm stereo jack plug for headphones, PJ-068 jack plug for microphone, XLR-3 for NoiseGard™
Ȋ 6.35 mm stereo...
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