T 51 p - Earphones BEYERDYNAMIC - Free user manual and instructions

Product type	Closed supra-aural headphone
Brand	Beyerdynamic
Model	T 51 p
Transducer technology	Dynamic (Tesla)
Acoustic principle	Closed
Frequency response	10 – 23,000 Hz
Nominal impedance	32 Ω
Nominal sound pressure level	111 dB
Max sound pressure level	131 dB
Max permissible power	100 mW
Ear coupling	Supra-aural
Headband pressure	2.5 N
Cable length	1.2 m, dual entry
Weight (without cable)	174 g
Included accessories	6.35 mm jack adapter, airplane adapter, storage pouch
Available spare parts	Earpad cushions (ref. 912.603), headband padding (ref. 906.875), adapters and pouch
Cushion maintenance	Soft damp cloth, clean water only; avoid liquid entering transducers
Cushion replacement	Remove the old one, peel off the film from the new one and stick (double-sided adhesive tape)
Main safety instructions	Do not use at high volume for long periods; do not wear in traffic; be careful with cables and jewelry
After-sales service	Contact [e-mail] or an authorized technician; do not open the headphone

Frequently Asked Questions - T 51 p BEYERDYNAMIC

How to adjust the T 51 p headphone to my head?

Adjust the snap position on each side of the headband (see figure 1), then adjust the angle of the earpads (figures 2 and 3). Position the headphone centered on your ears for optimal comfort and isolation.

What maximum volume is recommended?

To avoid hearing damage, do not exceed 85 dB (low volume) for 8 hours. Each increase of 3 dB halves the permissible listening time (e.g., 88 dB for 4 hours).

Can I use this headphone on the street?

No, wearing headphones reduces perception of ambient noise, which is dangerous in traffic. It is prohibited by law in many countries.

How to clean the earpad cushions?

Clean them with a soft damp cloth (clean water only). Make sure water does not penetrate the transducers. Do not use cleaning products.

How to replace the earpad cushions?

Carefully remove the old cushion. The new cushion is attached with double-sided adhesive tape: remove the protective film and stick it in place of the old one.

What accessories are included with the headphone?

The T 51 p comes with a 6.35 mm jack adapter, an airplane adapter, and a storage pouch.

Where can I buy spare parts?

Spare parts (cushions ref. 912.603, headband padding ref. 906.875, adapters, pouch) are available from beyerdynamic or authorized dealers.

What to do in case of a technical problem?

Contact beyerdynamic after-sales service by email at [e-mail] or an authorized technician. Never open the headphone yourself, as it will void the warranty.

What is the impedance of the headphone?

The nominal impedance is 32 Ω, making it suitable for use with portable devices (smartphones, tablets, MP3 players).

How to dispose of the headphone at end of life?

Do not dispose of it with household waste. Take it to a specialized collection center for electrical and electronic equipment (crossed-out wheelie bin symbol).

USER MANUAL T 51 p BEYERDYNAMIC

Operating Instructions

Bedienungsanleitung

Manual del usuario

Mode d'emploi

Thank you for selecting the T 51 p headphone from beyerdynamic. Please take some time to read carefully through this manual before using the product.

The T 51 p opens up new sound dimensions with its excellent bass and treble reproduction and superior materials.

The new Tesla technology developed by beyerdynamic is now also used in headphones for mobile applications. Whether on your way to work, college or travelling by train or aircraft, the supraaural T 51 p shields ambient noise with its closed design.

The efficient Tesla drivers provide extraordinarily precise and detailed sound.

With their slimline shape marked by simplicity and elegance, the smooth lightness of the T 51 p is also a winner for its appearance. There is no longer anything standing in the way of ultimate music enjoyment on portable devices, wherever you may be.

Safety instructions

Caution:

We would like to point out that listening at high volumes over a long period of time may damage your hearing irreversibly.

Therefore, reduce the volume before putting into operation. Make sure that the set volume is not too high. Rule of thumb: The higher the volume, the shorter the time of listening. According to employer's regulations for safety and health the noise exposure e.g. when working should not exceed 85 dB (low volume). This is an allowed time of listening of 8 hours at maximum. If the volume is increased by 3 dB, the allowed time of listening is halved, i.e. with 88 dB the time of listening is 4 hours, with 91 dB 2 hours and so on.

Danger to life!

Headphones dramatically reduce your ability to hear ambient noise. Using headphones while in road traffic is potentially very dangerous and is therefore prohibited by law. Also, please make sure that you do not use your headphones when in the vicinity of possibly dangerous machines and tools.

Risk of injury!

When wearing wired headphones, avoid any sudden movements. You could seriously injure yourself, especially if you have any piercings or wear earrings or glasses, etc. that can get caught in the wire.

How to adjust the headband

Before wearing the T 51 p for the first time you should adjust it properly to achieve the best sound and ambient noise attenuation.

Please refer to the following tips:

• Select the appropriate lock-in position on both sides of the headband. See ①.
• Adjust the angle of the ear pads. See ②and ③.
• Place the T 51 p centrally on your ears as shown in the middle picture.

Headphone is too high Perfect fit of the headphone Headphone is too low

① ② ③ X

Top-down view of a black and white headset with a circular head and handle, no visible text or symbols

Diagram of a mechanical device with numbered parts and directional arrows, labeled with 'X' at the base.

Connection

The connection cable of the headphone is provided with a stereo mini jack plug (3.5 mm).

- Connect the T 51 p via the mini jack plug directly to your mobile phone, tablet PC or MP3 player.

Cleaning and changing of ear pads

Clean the ear pads of your beyerdynamic headphones by using a damp cloth. For cleaning use pure water (no cleaning fluids or detergents) only taking care not to allow any water drops into the transducers.

You may need to change the ear pads from time to time as a result of normal wear and tear. This is easy to do yourself.

Technical line drawing of a mechanical component with two views showing internal components (no text or symbols)

Technical line drawing of a mechanical component with two circular parts and directional arrows indicating flow (no text or symbols)

- Remove the old ear pad. • The ear pad is provided with a

double sided adhesive tape to attach it.

- Remove the protective foil from the new ear pad and apply it to the housing.

In the event that other components need to be replaced, please contact your local beyerdynamic representative.

Service

If you require service please contact qualified service personnel or directly:

Dismantling the headphone yourself will invalidate the guarantee.

Supplied accessories

• 1/4" jack adapter (6.35 mm)
- In-flight adapter
- Bag

Spare parts

Ear pads.... Order # 912.603
Headband pad....Order # 906.875
1/4* jack adapter (6.35 mm) .... Order # 906.824
In-flight adapter 2 x 3.5 mm.... Order # 906.832
Bag .... Order # 906.840

Technical specifications

Transducer type. Dynamic
Operating principle .... Closed
Frequency response....10-23,000 Hz
Nominal impedance....32 Ω
Nominal sound pressure level 111 dB
Power handling 100 mW
Max. sound pressure level.... 131 dB
Sound coupling to the ear. . . . . . . . . . . . . . . . . . . . . Supraaural
Headband pressure 2.5 N
Length and type of cable 1.2 m, from both sides
Weight without cable 174 g

Disposal

This symbol on the product, in the instructions or on the packaging means that your electrical and electronic equipment should be disposed at the end of its life separately from your household waste. There are separate collection systems for recycling in the EU. For more information, please contact the local authority or your retailer where you purchased the product.

① ② ③ X ✓ ② ③ X ①

Anschluss

Technical line drawing of a mechanical component with two views (top and side), showing internal gear and housing (no text or symbols)

Technical line drawing of a mechanical component with two circular parts and directional arrows indicating flow (no text or symbols)

① ② ③ X ✓ ② ③ X

Conexión

Technical diagram of a mechanical component with two views showing internal components (no text or symbols)

Technical line drawing of a mechanical component with two circular parts and directional arrows indicating flow (no text or symbols)

Top-down view of a black and white helmet with a circular head and handle, no visible text or symbols

Diagram of a mechanical device with numbered parts and directional arrows, labeled with numbers ①, ②, ③ and an 'X' symbol at the bottom.

Branchement

Technical line drawing of a mechanical component with two views (top and side), showing internal components without any text or symbols.

Technical line drawing of a mechanical component with two circular parts and directional arrows indicating flow or movement (no text or symbols)

① ② ③ X ✓ ② ③ X ①

Подключение

Technical line drawing of a mechanical component with two views (top and side), showing internal components without any text or symbols.

Diagram of a mechanical component with two circular parts and directional arrows indicating flow or movement (no text or symbols)

Top-down view of a VR headset with a circular head and antenna (no text or symbols visible)

① ② ③ X

機器との接続

Technical line drawing of a mechanical component with two views showing internal components (no text or symbols)

・古いイヤーパッドを取り外します。

Diagram of a mechanical component with two circular parts and directional arrows indicating flow or movement (no text or symbols)

Technical line drawing of a mechanical component with two views showing internal components (no text or symbols)

- 将旧耳垫取下。

Diagram of a mechanical component with two circular parts and directional arrows indicating flow or movement (no text or symbols)

① ② ③ X ✓ ② ③ X ①

연결

Technical line drawing of a mechanical component with two views showing internal components (no text or symbols)

- 낮은 이어패드를 벗겨내십시오.

Diagram of a mechanical component with two circular parts and directional arrows indicating flow or movement (no text or symbols)

For further distributors worldwide, please go to www.beyerdynamic.com