AKG K912 Wireless Over-Ear Headphone User Manual

Introduction

The AKG K912 wireless over-ear headphones provide an immersive audio experience with the freedom of UHF technology. Designed for comfort and optimal reception, these headphones are suitable for enjoying games, movies, and music without the constraints of cables. This manual provides detailed instructions for the proper setup, operation, and maintenance of your AKG K912 headphones.

Package Contents

Please verify that all items listed below are present in your package:

• AKG K912 Wireless Over-Ear Headphones
• AKG T 912 Wireless Transmitter / Charging Base
• Power Adapter for Transmitter
• Audio Connection Cable (e.g., 3.5mm to RCA or 3.5mm to 3.5mm)
• 2 x AAA Rechargeable Batteries (may be pre-installed or separate)

Image: The AKG K912 wireless over-ear headphones shown alongside their AKG T 912 charging and transmitter base. The headphones feature a black frame with light-colored ear cushions and an adjustable headband. The base is black with 'AKG T 912' printed on it, along with 'CHARGE' and 'POWER ON' indicator lights.

Setup

1. Installing Batteries

If the AAA rechargeable batteries are not pre-installed, carefully open the battery compartment on the headphones (refer to the markings on the earcups). Insert the two AAA rechargeable batteries, ensuring correct polarity (+/-). Close the compartment securely.

2. Connecting the Transmitter Base (AKG T 912)

1. Power Connection: Connect the provided power adapter to the 'DC IN' port on the rear of the AKG T 912 transmitter base. Plug the adapter into a standard wall outlet. The 'POWER ON' indicator light on the base should illuminate.
2. Audio Source Connection: Use the supplied audio connection cable to connect the 'AUDIO IN' port on the transmitter base to the audio output (e.g., headphone jack, RCA audio out) of your audio source (TV, stereo system, computer, etc.). Ensure a secure connection.

3. Initial Charging

Place the AKG K912 headphones onto the AKG T 912 transmitter base. Ensure the charging contacts on the headphones align with those on the base. The 'CHARGE' indicator light on the base should illuminate, indicating that the headphones are charging. For optimal battery life, allow the headphones to charge fully before first use. A full charge typically takes several hours.

4. Automatic Frequency Control

The K912 headphones feature PLL-synthesized tuning and automatic frequency control for optimal reception. Once the transmitter is powered on and receiving an audio signal, and the headphones are turned on, they will automatically scan and lock onto the best available frequency. No manual tuning is typically required.

Operating Instructions

1. Powering On/Off

• Transmitter: The AKG T 912 transmitter base powers on automatically when connected to power. The 'POWER ON' indicator will be lit.
• Headphones: Locate the power button on the headphones (typically on one of the earcups). Press and hold it for a few seconds to turn the headphones on or off. An indicator light on the headphones will confirm their status.

2. Adjusting Volume

A volume control dial or buttons are located on one of the headphone earcups. Rotate the dial or press the buttons to adjust the listening volume to your preferred level. Ensure the audio source volume is set to a reasonable level to avoid distortion.

3. Wearing the Headphones

Place the headphones over your ears, ensuring the earcups fully enclose them for optimal sound isolation and comfort. Adjust the headband for a snug yet comfortable fit. The K912 features an over-ear design for extended listening comfort.

4. Wireless Range

The K912 headphones utilize UHF technology, providing an extended wireless range that can often transmit through walls and ceilings. Optimal reception is achieved when the line of sight between the transmitter and headphones is clear, though minor obstructions typically do not affect performance significantly.

Maintenance

1. Cleaning

Wipe the headphones and transmitter base with a soft, dry, lint-free cloth. Do not use liquid cleaners, aerosols, or solvents. For ear cushions, gently wipe with a slightly damp cloth if necessary, and allow to air dry completely before use.

2. Battery Care

To prolong the life of the rechargeable AAA batteries, avoid completely discharging them frequently. Place the headphones on the charging base when not in use. If the headphones will not be used for an extended period, it is advisable to remove the batteries.

3. Storage

Store the headphones and transmitter in a cool, dry place away from direct sunlight, extreme temperatures, and excessive dust. Avoid placing heavy objects on top of the headphones or transmitter.

Troubleshooting

• No Sound:
  • Ensure the transmitter base is powered on and its 'POWER ON' indicator is lit.
  • Verify the headphones are powered on.
  • Check all audio cable connections between the transmitter and your audio source.
  • Increase the volume on both the headphones and the audio source.
  • Confirm the audio source is playing sound.
• Poor Sound Quality / Hissing:
  • Ensure the transmitter base is placed at least 30 cm away from other electronic devices that may cause interference (e.g., Wi-Fi routers, mobile phones, speakers).
  • Adjust the volume level on your audio source; sometimes a very low input volume can cause hiss.
  • Check for strong radio frequency interference in the environment.
  • Ensure the headphones are within the effective range of the transmitter.
• Charging Issues:
  • Ensure the power adapter is securely connected to the transmitter base and the wall outlet.
  • Verify that the headphones are correctly seated on the charging base and the 'CHARGE' indicator light is illuminated.
  • Check the charging contacts on both the headphones and the base for any dirt or obstruction. Clean gently if necessary.
  • Ensure the batteries are correctly inserted into the headphones.
• Short Wireless Range:
  • Relocate the transmitter base to a more central position or away from large metal objects that might block the signal.
  • Ensure there are no excessive obstructions between the transmitter and the headphones.

Specifications

Warranty and Support

AKG products are manufactured to high quality standards. For information regarding warranty coverage, terms, and conditions, please refer to the warranty card included with your product or visit the official AKG support website. For technical assistance or customer service, please contact AKG customer support through their official channels.