RS 175
Digital Wireless Headphone System
Instruction Manual
Contents
Contents |
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Important safety information ...................................................................... |
2 |
The RS 175 digital wireless headphone system ........................................ |
4 |
Package includes ............................................................................................ |
5 |
Product overview ........................................................................................... |
6 |
Overview of the HDR 175 headphones ..................................................... |
6 |
Overview of the TR 175 transmitter .......................................................... |
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Overview of indicators .................................................................................. |
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Putting the RS 175 into operation ............................................................ |
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Setting up the transmitter ......................................................................... |
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Connecting the transmitter to an audio source .................................... |
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Connecting the transmitter to an AC wall outlet .................................. |
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Inserting and replacing the rechargeable batteries ............................. |
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Charging the rechargeable batteries ....................................................... |
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Adjusting the headband ............................................................................ |
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Using your RS 175 headphone system ..................................................... |
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Switching your wireless headphone system on .................................... |
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Selecting an audio input ............................................................................. |
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Adjusting the volume ................................................................................. |
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Muting/unmuting the headphones ......................................................... |
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Activating/Deactivating the virtual surround sound ........................... |
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Activating/Deactivating the dynamic bass boost ................................ |
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Pairing headphones to the transmitter .................................................. |
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Switching your wireless headphone system off .................................... |
25 |
Cleaning and maintaining the RS 175 ...................................................... |
26 |
Replacing the ear pads ............................................................................... |
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Troubleshooting ........................................................................................... |
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Sound problems ........................................................................................... |
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Other problems ............................................................................................ |
28 |
Leaving the range of the transmitter ...................................................... |
29 |
Clearing the pair settings on the headphones ....................................... |
29 |
Specifications ............................................................................................... |
30 |
Manufacturer declarations ......................................................................... |
31 |
RS 175 | 1
Important safety information
Important safety information
Read this instruction manual carefully and completely before using the product.
Always include this instruction manual when passing the product on to third parties.
Do not use an obviously defective product.
Preventing damage to health and accidents
Protect your hearing from high volume levels. Permanent hearing damage may occur when headphones are used at high volume levels for long periods of time. Sennheiser headphones sound exceptionally good at low and medium volume levels.
Keep the headphones at least 10 cm/3.94” from cardiac pacemakers or implanted defibrillators. The headphones contain magnets that generate a magnetic field which could cause interference with cardiac pacemakers and implanted defibrillators.
Keep the product, accessories and packaging parts out of reach of children and pets to prevent accidents and choking hazards.
Do not use the product in situations which require special attention (e.g. in traffic or when performing skilled jobs).
Preventing damage to the product and malfunctions
Always keep the product dry and do not expose it to extreme temperatures to avoid corrosion or deformation. The normal operating temperature is from 0 to 40°C/32 to 104°F.
Use only attachments/accessories/spare parts supplied or recommended by Sennheiser.
Unplug the power supply unit from the AC wall outlet if you are not going to use the product for extended periods of time.
Varnish or furniture polish may degrade the feet of the transmitter, which could stain your furniture. You should therefore place the transmitter on a non-slip pad to avoid potential staining of furniture.
Do not place your headphones on a glass dummy head, chair armrest or similar objects for long periods as this can widen the headband and reduce the contact pressure of the headphones.
Clean the product only with a soft, dry cloth.
Intended use/Liability
This wireless headphone system is suitable for use with hi-fi systems, TV sets, and home cinema systems and supports both analog and digital signals simultaneously.
This product is intended for private domestic use only. It is not suitable for commercial use. This product is also not intended to be used with portable audio devices.
It is considered improper use when this product is used for any application not named in this instruction manual and the associated product guides.
Sennheiser does not accept liability for damage arising from abuse or misuse of this product and its attachments/accessories.
2 | RS 175
Important safety information
Safety instructions for standard/rechargeable batteries
WARNING
In extreme cases, the standard/rechargeable batteries may leak and may cause the following hazards if abused or misused:
•explosion
•fire
•heat
•smoke/gas
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Keep away from |
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Do not heat above 70°C/158°F, |
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children. |
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e.g. do not expose to sunlight |
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or throw into fire. |
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Do not expose to |
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When not using rechargeable |
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moisture. |
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batteries for extended periods |
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of time, charge them regularly |
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(about every 3 months). |
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Do not mutilate or |
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When not using the product |
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dismantle. |
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for extended periods of time, |
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remove the standard/ |
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rechargeable batteries. |
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Observe correct polarity. |
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Use only rechargeable batteries |
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and chargers recommended by |
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Sennheiser. |
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Pack/store standard/ |
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Do not continue using defective |
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charged rechargeable |
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standard/rechargeable |
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batteries so that the |
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batteries and dispose of them |
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terminals cannot |
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immediately. |
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contact each other – |
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danger of shorting out/ |
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fire hazard. |
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Switch battery-powered |
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Immediately remove standard/ |
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products off after use. |
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rechargeable batteries from an |
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obviously defective product. |
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Charge rechargeable |
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Dispose of standard/ |
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batteries at ambient |
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rechargeable batteries at |
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temperatures between |
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special collection points or |
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10 and 40°C/50 and |
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return them to your specialist |
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104°F. |
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dealer. |
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Do not charge standard |
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HR03 |
Do not mix standard and |
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batteries. |
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rechargeable batteries in the |
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LR03 |
battery compartments. |
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RS 175 | 3
The RS 175 digital wireless headphone system
The RS 175 digital wireless headphone system
Taking home entertainment to the next level, Sennheiser’s RS 175 offers an impressive range of features in a compact, ergonomic package, so that you can enjoy music and television to the fullest. The Bass Boost and Surround Sound listening modes will allow you to experience your home entertainment system like never before – the former increases the audio bass response while the two virtual surround modes offer a more spatial and livelier stereo sound.
What’s more, the innovative digital wireless technology ensures that signal transmission remains clear and accurate as you move from room to room. Additionally, the user-friendly design makes it easy to set up and enjoy the RS 175. The main controls are located on the headphones, so nothing will distract you from an exciting audio experience, and the comfortable fit is ideal for extended periods of use.
Sennheiser’s RS 175: Home entertainment just got more entertaining!
Features
•Closed, circumaural headphones with excellent digital wireless audio transmission
•Exceptional digital audio clarity and transmission range of up to 100 m/328 ft (line of sight)
•Enables switching between dynamic bass and virtual surround sound listening modes for situational sound customization
•Supports analog and digital audio inputs and allows toggling between
the inputs
Analog Digital |
• Intelligently designed controls for maximum ease of use |
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•Multi-purpose transmitter – also functions as “easy-charge“ cradle and docking station
•Multi-receiver transmission – transmitter supports up to two pairs of headphones simultaneously
•Ergonomic design for enhanced wearing comfort
•2-year warranty
4 | RS 175
Package includes
Package includes
Quick Guide
PDF 
HDR 175 headphones
TR 175 transmitter
Power supply unit with multi-country adapters (EU, UK, US, AU)
Low self-discharge NiMH rechargeable batteries, AAA size
Optical digital cable, 1.5 m
Stereo audio cable with 3.5 mm jack plugs, 2 m
Quick guide
Instruction manual CD in 15 languages (PDF files)
Safety guide
Safety Guide
RS 175 | 5
Product overview
Product overview
Overview of the HDR 175 headphones
1
2
3
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4 |
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0 |
5 |
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9 |
6 |
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8 |
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7 |
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1 Headband |
6 Volume + button |
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2 Charging contacts |
7 Volume – button |
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3 Ear pads |
8 BASS button |
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4 Ear cups/Battery |
9 HDR power button |
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compartments |
0 HDR status LED |
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5SURR Virtual surround sound button
6 | RS 175
Product overview
Overview of the TR 175 transmitter
6
5
SURR
4
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LO |
3 |
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B |
2 |
ASS |
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1
7
HI
8
9
0
1 TR status LED |
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7 DIGITAL OPTICAL IN Digital |
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2 BASS button (with LED |
optical audio input |
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indicator) |
8 Input selection switch |
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3 Virtual surround sound LED |
9 ANALOG 3.5 mm IN Analog |
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indicators, low LO and high HI |
audio input (3.5 mm jack) |
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4 SURR Virtual surround sound |
0 DC 9V 0.3A socket for the power |
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button |
supply unit |
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5Charge status LED indicator 
6Charging contacts
RS 175 | 7
Product overview
Overview of indicators
The LED indicators on the headphones and on the transmitter indicate the current operating state. If you are not using the headphones, the LED indicators automatically dim after approx. 30 seconds to not disturb you.
LED indicators on the headphones
HDR status LED |
Meaning |
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The headphones are switched off. |
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The transmitter and headphones are |
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connected. |
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The transmitter and headphones are |
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connected and the rechargeable batteries |
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are almost empty. |
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The headphones are disconnected from or |
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1s |
1s |
cannot connect to the transmitter. |
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The headphones are disconnected from or |
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1s |
1s |
cannot connect to the transmitter and the |
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rechargeable batteries are almost empty. |
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8 | RS 175
Product overview
LED indicators on the transmitter
1
2
3
4
SURR
LO 
HI
BASS
1
2
Charge status LED |
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Meaning |
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The transmitter is not charging.
The rechargeable batteries are being charged.
The rechargeable batteries are fully charged.
A charging/battery fault has been detected.
After taking the headphones from the holder of the transmitter, the charge status LED indicates the approximate operating time of the headphones:
Charge status LED |
Operating time |
Battery capacity |
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up to 4 hours |
0 to 25% |
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approx. 4 to 9 hours |
25 to 50% |
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approx. 9 to 14 hours |
50 to 75% |
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approx. 14 to 18 hours |
75 to 100% |
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Surround sound LED |
Meaning |
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The surround sound is deactivated. |
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LO: Low surround sound mode is active. |
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HI: High surround sound mode is active. |
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RS 175 | 9
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