HME 46-31-II - Headphones SENNHEISER - Free user manual and instructions
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| Product Type | Headset (over-ear, closed-back) |
| Brand | Sennheiser |
| Model | HME 46-31-II |
| Compatibility | Aviation intercom systems, communication radios |
| Design Type | Over-ear, closed-back, passive noise attenuation |
| Microphone | Dynamic, noise-cancelling, boom adjustable |
| Headphone Frequency Response | 20 - 20000 Hz |
| Microphone Frequency Response | 50 - 15000 Hz |
| Headphone Impedance | 600 Ω |
| Headphone Sensitivity | 106 dB SPL |
| Weight | Approx. 280 g (without cable) |
| Cable Length | 1.8 m (6 ft) |
| Connectors | 2 x 6.35 mm (1/4 inch) mono plugs (U174/U or standard) |
| Noise Reduction | Passive >20 dB (ear cups and microphone) |
| Replacement Parts Available | Ear pads, headband padding, microphone windscreen, cable |
| Cleaning | Wipe with dry or slightly damp cloth; avoid solvents |
| Safety Notes | Use only with compatible intercoms; avoid prolonged high volume |
| Storage | Store in a dry, dust-free environment at room temperature |
| Suitable For | Professional aviation, two-way radio communication |
Frequently Asked Questions - HME 46-31-II SENNHEISER
How do I connect the HME 46-31-II to an aircraft intercom?
The headset has two 6.35 mm mono plugs (typically one for left audio and one for right audio). Plug the smaller plug into the intercom's headphone jack and the larger plug into the microphone jack. Ensure the microphone is positioned near your mouth.
Are the ear cushions replaceable?
Yes, the ear pads are replaceable. Sennheiser offers genuine replacement ear pads designed for the HME series. To replace, gently pull off the old pad and snap the new pad onto the ear cup.
Is the microphone noise-cancelling?
Yes, the HME 46-31-II features a dynamic noise-cancelling microphone that reduces background noise for clear communication in noisy environments like cockpits.
What is the impedance of the headphones?
The headphone impedance is 600 ohms, which is suitable for use with aviation intercom systems and high-impedance outputs.
Can I use this headset with a PC?
Yes, but you may need an adapter to combine the two mono plugs into a single stereo 3.5 mm jack. Additionally, the 600 ohm impedance may require a headphone amplifier for adequate volume.
How should I clean the headset?
Use a soft dry or slightly damp cloth to wipe the ear cups and headband. Do not use solvents or immerse in water. For the microphone, gently blow away dust or use a soft brush.
What is the weight of the HME 46-31-II?
The headset weighs approximately 280 grams (without the cable), making it comfortable for extended wear.
How should I store the headset when not in use?
Store the headset in a dry and dust-free environment at room temperature. Avoid coiling the cable tightly; use a loose loop to prevent damage.
Is this headset compatible with all aircraft intercoms?
The HME 46-31-II is designed for general aviation intercoms using standard 6.35 mm jacks. For specific aircraft models, check compatibility with the intercom's impedance and connector type.
What should I do if there is no sound from the headset?
First, ensure the plugs are fully inserted into the correct jacks. Check that the intercom is powered on and the volume is up. If using an adapter, verify it is properly connected. If the issue persists, test with another device to isolate the problem.
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