Sennheiser HDR 145 User manual

HDR 145

Additional Headphones for RS 145 comfort

Instruction manual

BALANCE

Contents

Important safety instructions ................................................ 2

The HDR 145 RF headphones ................................................. 4

Delivery includes ...................................................................... 4

Product overview ..................................................................... 5

Overview of the headphones ................................................ 5

Overview of the acoustic signals .......................................... 5

Putting the HDR 145 into operation ..................................... 6

Inserting and changing the headphones’

rechargeable batteries ........................................................... 6

Charging the headphones’ rechargeable batteries .......... 6

Adjusting the headband of the headphones ..................... 7

Using the HDR 145 ................................................................... 8

Switching the headphones on and off ................................ 8

Searching for a sound source ................................................ 9

Adjusting the volume ............................................................. 9

Adjusting the balance .......................................................... 10

Switching the acoustic signals (beeps) on and off ........ 10

Cleaning the HDR 145 ........................................................... 11

If a problem occurs ... ............................................................ 12

Accessories and spare parts ................................................. 13

Specifications .......................................................................... 13

Manufacturer Declarations ................................................... 14

Important safety instructions

• Please read this instruction manual carefully and

completely before using the device.

• Make this instruction manual easily accessible to all users

at all times. Always include this instruction manual when

passing the device on to third parties.

• Do not use the device in situations which require special

attention (e.g. when performing skilled jobs).

• Always keep the device dry and do not expose it to extreme

temperatures.

Intended use of the device

Intended use includes:

• having read this instruction manual, especially the chapter

“Safety instructions”,

• using the device within the operating conditions and

limitations described in this instruction manual.

“Improper use” means using the device other than as

described in this instructions, or under operating conditions

which differ from those described herein.

Important safety instructions

Safety instructions for NiMH rechargeable batteries

If abused or misused, rechargeable batteries may leak. In

extreme cases, they may even present

Please understand that Sennheiser does not accept liability

for damage arising from abuse or misuse.

• a heat hazard,

• a fire hazard,

• a leakage hazard,

• an explosion hazard,

• a smoke or gas hazard.

Keep away from children. Only use original Sennheiser

rechargeable batteries.

Observe correct polarity. Do not short-circuit.

Do not expose to

moisture.

Switch rechargeable battery-

powered devices off after use.

Do not pack charged bat-

teries loose – danger of

shorting out/ fire hazard.

Only charge rechargeable

batteries with the appropriate

Sennheiser chargers.

Do not continue to use

defective rechargeable

batteries.

Do not heat above 70 °C/158 °F,

e.g. do not expose to sunlight or

throw into a fire.

Do not mutilate or

dismantle.

Only charge rechargeable bat-

teries at ambient temperatures

between 10 °C and 40 °C.

Immediately remove

rechargeable batteries

from obviously defective

devices.

Dispose of rechargeable

batteries at special collection

points or return them to your

specialist dealer.

When not using rechargeable batteries for extended periods of

time, charge them regularly (about every three months).

The HDR 145 RF headphones

The HDR 145 headphones are part of the RS 145 comfort RF

stereo hi-fi headphone system. The closed, circumaural RF

stereo headphones offer excellent sound quality and allow for

wireless listening everywhere in the house and garden.

The lightweight headphones are extremely comfortable to

wear and very easy to use. The volume can easily be adjusted

to individual needs. Enjoy a completely unrestricted listening

experience without disturbing others.

Delivery includes

1 HDR 145 headphones

2 AAA size NiMH rechargeable batteries, 1.2 V

1 instruction manual

Product overview

An overview of the headphones is given on the inside front

cover of this instruction manual.

Overview of the headphones

1Headband

2Volume control

3TUNE button

4Balance control for R/L volume adjustment

5ON/OFF switch

6Earpad

Overview of the acoustic signals

Acoustic signal Meaning

6 short beeps No signal!

Transmitter is switched off

or out of range.

2 long beeps Rechargeable batteries are

almost flat.

Sequence of

3 beeps

Headphones have been

switched off.

Putting the HDR 145 into operation

Inserting and changing the headphones’

rechargeable batteries

Before using the HDR 145 for the first time, you have to insert

the supplied rechargeable batteries.

왘Lift the left earpad 6off as described under “Replacing the

earpads” on page 11.

Charging the headphones’ rechargeable batteries

왘Insert the rechargeable batteries. Observe

correct polarity when inserting the

batteries.

왘Put the earpad 6back in place.

If the operating time decreases drastically even when

the rechargeable batteries are fully charged, the

rechargeable batteries are exhausted and have to be

replaced.

Charge the rechargeable batteries for at least 16 hours

prior to first time use. Subsequent charging time is

about the same time as the previous operating time.

The operating time is up to 23 hours.

왘Place the headphones on the

charging cradle. Make sure that

the charging indictor on the

transmitter lights up red.

The headphones automatically

switch off and the rechargeable

batteries are being charged.

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