Sennheiser HME 26-2-K User manual

Brand: Sennheiser

Model: HME 26-2-K

Category: Headsets

Type: User manual

Sennheiser HME 26-2-K: This headset features dynamic, closed headphones with a noise-compensating condenser microphone. It is designed for use in jet aircraft cockpits and provides excellent speech transmission even in noisy environments. The microphone boom is flexible and can be worn on either the left or right-hand side, and the ear cups can be flipped away for single-sided listening. The headset also features peak level protection to safeguard your ears from volume peaks above 110 dB, and a single-sided cable that is easy to replace.

Instruction manual

HME 26-2

Important safety instructions

HME 26-2 | 1

Important safety instructions

• Please read this instruction manual carefully and

completely before using the headset.

• Make this instruction manual easily accessible to all users

at all times.

• Always include this instruction manual when passing the

product on to third parties.

• The product is capable of producing sound pressure levels

exceeding 85 dB(A). In many countries 85 dB(A) is the

maximum legally permissible level for continuous noise

exposure during the working day. Exposure to sounds of

higher volume levels or for longer durations can

permanently damage your hearing!

• Never repair or attempt to repair a defective product

yourself. Contact your Sennheiser agent or the

Sennheiser Service Department.

• Only replace those parts of the product whose

replacement is described in this manual. All other parts

must be replaced by your Sennheiser agent.

• Protect the product from wetness. Use only a slightly

damp cloth for cleaning. For information on how to clean

the product, contact your Sennheiser agent.

Important safety instructions

2 | HME 26-2

Intended use

Intended use includes:

• having read and this instruction manual, especially the

chapter “Important safety instructions”.

• using the product within the operating conditions and

limitations described in this instruction manual.

Improper use

Improper use means using the product other than as

described in this instruction manual, or under operating

conditions which differ from those described herein.

The HME 26-2 headset

HME 26-2 | 3

The HME 26-2 headset

The HME 26-2 headset features dynamic, closed head-

phones. The noise-compensating condenser microphone en-

sures excellent speech transmission even in noisy environ-

ments. The headset has been designed for use in jet aircraft

cockpits.

Features

• Lightweight

• Extremely comfortable to wear due to the patented two-

piece automatic headband and soft ear pads

• Peak level protection (switchable) safeguards you from

volume peaks above 110 dB

• “Flip-away” headphone allows single-sided listening

• Flexible microphone boom, can be worn on either left or

right-hand side

• Noise-compensating condenser microphone ensures

excellent speech transmission

• Single-sided cable, easy to replace

• ETSO approval C139

Package contents

4 | HME 26-2

Package contents

1HME 26-2 headset

1 cable clip

1 wind and pop screen

1 instruction manual

1carry bag

1EASA Form 1

Operation

Turning the microphone boom

The microphone boom can be rotated, allowing the micro-

phone to be worn on the left or right-hand side of the head.

Operation

HME 26-2 | 5

Putting on the headset

When putting on the headset, the patented two-piece

headband adjusts automatically.

Positioning the microphone

Bend the flexible microphone boom so that the microphone

is placed at the corner of the mouth. Maintain a distance of

cm between microphone and mouth. Always use the

supplied wind and pop screen.

Operation

6 | HME 26-2

Flipping away one ear cup

The headset’s “flip-away” ear cup can be flipped backwards

by approx. 45°, allowing for singled-sided listening.

Adjusting the volume on the audio system

Connect the headset to the corresponding sockets of your

audio system.

왘 Adjust the volume directly on the audio system.

CAUTION

Hearing damage due to high volumes!

This headset is capable of producing high sound

pressure levels. Higher volumes or longer durations

can damage your hearing!

왘 Set the volume to a medium level. Make sure

that you can hear critical environmental sounds.

ca. 45°

Operation

HME 26-2 | 7

Adjusting the microphone sensitivity

The microphone sensitivity has been factory pre-set to

mV/Pa as per RTCA DO-214.

왘 Turn a small screwdriver in the direction of the arrow to

change the microphone sensitivity.

Switching the p

eak level protection

on and off

The peak level protection safeguards your ears from volume

peaks above 110 dB, which can be transmitted via the audio

system or radio equipment.

왘 Slide the switch for the peak level protection to the

desired position by using a pointed object:

–

Operation

8 | HME 26-2

Attaching the cable clip

The cable clip allows you to attach the headphone cable to

your clothing so that the cable doesn’t hinder or distract you.

왘 Loop the cable through the clip so that the headphone

cable doesn‘t hinder you.

Position Function

up Peak level protection is switched off.

down Peak level protection is switched on

(factory default setting).

Care and maintenance

HME 26-2 | 9

Care and maintenance

Cleaning and maintaining the headset

왘 Only use a soft, dry cloth to clean the product.

Replacing the ear pads

For reasons of hygiene, you should replace the ear pads at

least once annually.

왘 Grasp the edge of the ear pad and pull sharply.

왘 Attach the new ear pad to the ear cup by pressing firmly

around the ear pad until you hear all 12 latches lock into

place.

CAUTION

Liquids can damage the product!

Liquids entering the product can short-circuit the electronics

or damage the mechanics. Solvents or cleansing agents can

damage the surface of the product.

왘 Keep all liquids far away from the product.

Care and maintenance

10 | HME 26-2

Replacing the headband paddings

For reasons of hygiene, you should replace the headband

paddings at least once annually.

왘 Pull the Ziploc type fastening strips of the old headband

paddings apart.

왘 Put the new headband paddings around the headbands.

왘 Attach the new headband paddings by joining the

fastenings strips.

The tongue and groove of the fastening strips click into

place.

Accessories and spare parts

HME 26-2 | 11

Accessories and spare parts

By changing the cable, you can simply retrofit your headset

(

see “Product variants” on page 12).

Accessories

• Cable -C Cat. No. 500840

• Cable -K Cat. No. 500841

• Cable -N Cat. No. 500843

• Hygiene pads HZH 26, white, Cat. No. 502595

200 pairs

• Hygiene pads HZH 26, black, Cat. No. 504062

200 pairs

Spare parts

• Ear pads, leatherette, 1 pair

• Ear pads, leatherette, 100 pairs

• Ear pads, velour, 1 pair

• Headband padding, large, 1 item

• Headband paddings, small, 1 pair

• Wind and pop screen, 1 item

•Wind and pop screen, any quantity

•Carry bag

• Cable clip HZC 08

Cable clip

HZC 08

for round cables

Product variants

12 | HME 26-2

Product variants

Model Cat. No. /

Part Number

Description Cable

HME 26-2 505698 /

026-55-2

Headset with

condenser

microphone

The headset can be

combined with all

cables (see

page 11).

HME 26-2-K

505699 /

026-55-2-

999-0131

Headset with

condenser

microphone

Single-sided round

cable with ¼“

(6.3 mm) jack plug

(headphones) and

PJ-068 equivalent

(microphone),

length 1.85 m

Connector assignment

HME 26-2 | 13

Connector assignment

HME 26-2-K

Cable -C

Cable -N

¼" (6.3 mm) jack plug PJ-068 equivalent

Audio Hi

not assigned

Audio Lo

not assigned

Microphone Hi

Microphone Lo

12 3

Solder side

Audio Hi

Audio Lo

Microphone Hi

Microphone Lo

not assigned

Solder side

1 Audio Hi

2 Audio Lo

3 not assigned

4 Microphone Lo

5 Microphone Hi

6 not assigned

7 not assigned

8 not assigned

Specifications

14 | HME 26-2

Specifications

Headphones

Transducer principle dynamic, closed

Ear coupling supra-aural

Frequency response 20 to 14,000 Hz

Impedance 600 Ω mono/1,200 Ω stereo

Characteristic SPL 92 dB SPL at 1 kHz, 1 mW, mono

97 dB SPL at 1 kHz, 1 V

Max. SPL peak level protection switched on:

120 dB SPL at 1 kHz

peak level protection switched off:

> 125 dB SPL at 1 kHz

THD < 1 % at 110 dB SPL

(350 to 3,000 Hz)

Contact pressure approx. 3.9 N

Microphone

Type BKE 46

Transducer principle pre-polarized condenser microphone,

noise-compensating

Frequency response 100 to 6,000 Hz

Output voltage adjustable from 17 to 100 mV/Pa, 80 mV/Pa -2 B

factory preset

800 mV

2 dB at 114 dB SPL

Terminating impedance 150 to 2,200 Ω

Supply voltage 8 to 16 V DC

General data

Temperature range operation: -15 °C to 55 °C

storage: -55 °C to 70 °C

Weight without cable approx. 205 g

Manufacturer Declarations

HME 26-2 | 15

Manufacturer Declarations

Warranty

Sennheiser GmbH & Co. KG gives a warranty of 5 years on this

product.

For the current warranty conditions, please visit our website

at www.sennheiser-aviation.com or www.sennheiser.com or

contact your Sennheiser partner.

CE Declaration of Conformity

• EMV Directive (2004/108/EC)

• RoHS Directive (2011/65/EC)

The declaration is available at www.sennheiser.com.

In compliance with:

Europe EMC EN 55103-1/-2

China

Manufacturer Declarations

16 | HME 26-2

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Manufacturer Declarations

HME 26-2 | 17

FCC User Information

NOTE: This equipment has been tested and found to comply

with the limits for a Class B digital device of the FCC Rules,

pursuant to part 15 of the FCC Rules and ICES 003 of Industry

Canada. These limits are designed to provide reasonable

protection against harmful interference in a residential

installation. This equipment generates, uses and can radiate

radio frequency energy and, if not installed and used in

accordance with the instructions, may cause harmful

interference to radio communications. However, there is no

guarantee that interference will not occur in a particular

installation. If this equipment does cause harmful

interference to radio or television reception, which can be

determined by turning the equipment off and on, the user is

encouraged to try to correct the interference by one or more

of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and

receiver.

• Connect the equipment into an outlet on a circuit

different from that to which the receiver is connected.

• Consult the dealer or an experienced radio/ TV technician

for help.

Changes or modifications made to this equipment not

expressly approved by Sennheiser electronic Corp. may void

the FCC authorization to operate this equipment.

Manufacturer Declarations

18 | HME 26-2

Sennheiser electronic GmbH & Co. KG

Am Labor 1, 30900 Wedemark, Germany

www.sennheiser-aviation.com | www.sennheiser.com

Printed in Germany, Publ. 12/12, 548065/A01

Sennheiser HME 26-2-K User manual

Brand: Sennheiser

Model: HME 26-2-K

Category: Headsets

Type: User manual

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Sennheiser HME 26-2-K User manual

Sennheiser HME 26-2-K User manual

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