HMD 45-6 - Professional headphones SENNHEISER - Free user manual and instructions

Product type	Professional headset with microphone
Brand	SENNHEISER
Model	HMD 45-6
Transducer principle (headphone)	Dynamic, open
Frequency response (headphone)	20 Hz - 18 kHz
Impedance (headphone)	150 Ω (mono) / 300 Ω (stereo)
Harmonic distortion	< 1%
Microphone type	Dynamic
Frequency response (microphone)	50 Hz - 12 kHz (at 2 cm from the mouth)
Output voltage (microphone)	0.5 mV/Pa
Impedance (microphone)	200 Ω
Power supply	None (dynamic microphone)
Earpiece pressure	Approx. 1.6 N
Weight (without cable)	140 g
Cable length	1.8 m (single-sided)
Connector	Open end
Intended use	Telephone exchanges, conference and interpretation systems
Maintenance	Clean with a soft, dry cloth
Safety	Use at a moderate volume to avoid hearing damage
Spare parts	Contact SENNHEISER after-sales service

Frequently Asked Questions - HMD 45-6 SENNHEISER

How to adjust the microphone on the HMD 45-6 headset?

To adjust the microphone, rotate the microphone boom to position it near your mouth. It is recommended to place the microphone about 2 cm from the lips for better audio quality.

How to adjust the headband?

The headband can be adjusted by pulling or pushing the side arms. It should be set so that the headset rests comfortably on the head without excessive pressure.

How to connect the HMD 45-6 headset to a telephone?

The HMD 45-6 comes with an open end. You must choose the appropriate connector for your telephone. If your telephone has a jack conforming to standard 121 TR 9-5, you can use the appropriate cable. Otherwise, an adapter may be necessary.

What is the difference between the HMD 45-6, HME 45-6, HME 45-C and HME 45 telecom models?

The HMD 45-6 is equipped with a dynamic microphone and an open end. The HME 45-6 has a back-electret condenser microphone, the HME 45-C comes with a 5-pin XLR connector, and the HME 45 telecom comes with a 4-pole Western plug for telephones conforming to the German standard.

Does the HMD 45-6 microphone require power?

No, the dynamic microphone of the HMD 45-6 does not require any external power. This is an advantage for simple use.

What types of connectors are available for this headset?

The HMD 45-6 comes with a free cable end. You can connect the appropriate connector for your equipment. Other variants (HME 45-C, HME 45 telecom) are supplied with specific connectors (5-pin XLR, 4-pole Western plug).

Can I use this headset with a computer?

Yes, provided you have a suitable adapter. The open-end cable allows you to connect a 3.5 mm jack or USB connector as needed. Check the specifications of your sound card.

How to clean my HMD 45-6 headset?

Clean the headset with a soft, dry cloth. Do not use harsh chemicals. For the ear pads, occasional cleaning with soapy water can be done.

What is the impedance of the HMD 45-6 headset?

The headset impedance is 150 Ω in mono and 300 Ω per earpiece in stereo. This high impedance ensures good compatibility with professional equipment.

Is the headset suitable for call center use?

Yes, the HMD 45-6 is specifically designed for telephone exchanges and conference systems. Its dynamic microphone and light weight (140 g) make it comfortable for prolonged use.

USER MANUAL HMD 45-6 SENNHEISER

Headset for connection to terminals in telephone exchanges and switchboards or to conference and interpretation systems. The headset is supplied with open-ended cable so that the user can choose the connector most suitable for the application. Please refer to page 27 for the wiring diagram.

HME 45-C

Headset for connection to terminals in telephone exchanges and switchboards or to conference and interpretation systems. This headset is supplied with a 5-pin XLR connector. Please refer to page 28 for the pin assignment of the XLR connector.

HME 45 telcom

Headset for connection to terminals in telephone exchanges and switchboards or to telephones with suitable socket (as per 121 TR 9-5 connection standard of the German Telekom). This headset replaces the receiver and leaves your hands free. Please refer to page 29 for the wiring diagram.

HMD 45-6

Headset with dynamic microphone. No external supply voltage necessary. The headset is supplied with open-ended cable so that the user can choose the connector most suitable for the application. Please refer to page 27 for the wiring diagram.

Connection of the HME 45 telcom to a telephone

In the ideal case, your telephone is fitted with a suitable socket for connecting the headset. Such a socket resembles the socket for the spiral cord of the receiver and is unconnected. Some manufacturers use a headphone symbol for it, others the designation „121 TR 9-5".

Connect the cable of your HME 45 telecom headset to this socket (see fig. 1).
The receiver remains on the cradle. You need it as a „switch“ at the beginning and the end of your phone call.

Please note for the HME 45 telcom

If your telephone has a headset socket not corresponding to the 121 TR 9-5 standard of the German Telekom, you have to have an adaptor made, or you have to use a new plug. Figure ② shows the wiring arrangement.

2

Some telephones (especially from German manufacturers) have a receiver socket suitable for the headset. In particular, this socket is able to supply the necessary operating voltage for the condenser microphone.

Please ask your telephone manufacturer whether you can directly connect a headset (fig. 3). He will need the circuit diagram and the technical data of your Sennheiser headset. Please photocopy pages 10 and 29 of these operating instructions for him.

3

Adjusting the microphone boom

Adjusting the headband

Cable and microphone on the left or the right

Cable on the left

Cable on the right

Technical data

Headphone

Transducer principle

Frequency response

Impedance

THD

dynamic, open

20 Hz - 18 kHz

mono: 150 stereo: 300 per side

< 1 %

Microphone

Transducer principle

Frequency response

(2 cm distance between mic and corner of mouth)

Output voltage

Operating voltage

HME 45-6 / HME 45-C / HME 45 telcom

noise-cancelling back-electret condenser microphone capsule

100Hz - 5kHz

HME 45 telcom: -40 dBV/Pa as per 121 TR 9-5

HME 45-6/ -C: -35 dBV/Pa

HME 45 telcom: 5 V DC

HME 45-6/-C:3.5 -10 V DC

Microphone

Transducer principle

Frequency response

(2 cm distance between mic and corner of mouth)

Output voltage

Impedance

HMD 45-6

Dynamic microphone

50Hz - 12kHz

0.5mV / Pa

200Ω

Other

Contact pressure

Weight (without cable)

Cable

Connector

approx. 1.6N

140g

single-sided, total length 1.8m

HME 45 telcom: 4-pin western connector

HME 45-C: 5-pin XLR connector

HME 45-6: open-ended cable

HMD 45-6: open-ended cable

1 headset

Supply schedule

Product variants

HME 45 telcom: 4-pin western connector

HME 45-C: 5-pin XLR connector

HME 45-6: open-ended cable

HMD 45-6: open-ended cable

HME 45-C: spina XLR a 5 poli

HME 45-C: spina XLR a 5 poli

HME 45telcom: 5 V DC

HME 45-6/ -C:3,5-10 V DC

Microfoon

Omzetprincipe

headphone headphone capsule, capsule, left right

HME 45-6

headphone headache capsule, capsule, left right

Stromlaufplan

circuit diagram

Printed in Germany Publ. 2/98

59377/A03