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Frequently asked questions about OSKAR
Connection options
Tone and sound reproduction
Rechargeable battery, battery and charging time
Range
Troubleshooting
Connection options
No. Each base station connects only to the associated OSKAR. If you want to use more than one TV voice amplifier, buy additional OSKAR TV voice amplifiers and connect them via a splitter to your optical digital audio output or the 3.5 mm audio output (headphone jack) of your TV.
You can connect OSKAR to any TV set that has an optical digital audio output or a 3.5 mm audio output (headphone connection).
It can also be connected to any other device that has one of these connections (e.g. PC, tablet, CD player) and voice-optimised playback is also possible.
It can also be connected to any other device that has one of these connections (e.g. PC, tablet, CD player) and voice-optimised playback is also possible.
No. OSKAR does not have an integrated radio tuner. But you can easily connect OSKAR to a radio and use OSKAR as an external loudspeaker if this device has an optical digital audio output or a 3.5 mm audio output (headphone jack). Voice-optimised playback is also possible via such devices.
Yes. OSKAR should be connected to your TV via an optical digital audio output to work with integrated TV applications. Please make sure that the digital audio output of your TV is set to PCM. For more information on setting the digital audio output to PCM, please refer to the operating instructions of your TV.
To enjoy better sound quality, we recommend connecting via an optical audio cable. If your TV does not have a digital optical audio output or if it is already occupied by another device, connect the 3.5 mm audio cable via the headphone jack of your TV.
Use either the optical audio cable or the 3.5 mm audio cable to connect. Both cables are included in the delivery, leaving one. Connect only one of the two cables. If you connect both cables, the base station automatically selects the transmission of the TV sound via the optical audio cable.
No. However, we recommend using only one of the two cables (either the optical audio cable or the 3.5 mm audio cable). For better sound reproduction, we recommend using the optical audio cable. If you connect both cables, the base station automatically selects the transmission of the TV sound via the optical audio cable.
Yes. For undisturbed enjoyment of the TV sound, you can connect external headphones to your OSKAR if required. Please use wired headphones for this purpose. Selecting a speech filter setting is also possible with external headphones.
Tone and sound reproduction
A1: When connected via the headphone jack (3.5mm):
Some TVs require you to activate audio playback via your headphone jack. Use your TV remote control to access your TV's settings menu, select Audio and follow the instructions in your TV's operating manual.
A2: When connected via TV audio outputs:
Some TVs require you to activate the audio output connections for sound playback. Use your TV remote control to access the TV settings menu, select Audio and follow the instructions in your TV's operating manual.
A3: When connected via the optical digital audio connection:
With some TV sets you must activate "PCM" for sound reproduction. Without setting the digital audio connection to PCM output, sound may not be output. Use your TV remote control to access your TV's settings menu, select Audio and follow the instructions in your TV's operating manual to activate PCM.
Depending on the TV model, the TV speakers can be muted when your TV and the base station (transmitting part) are connected via a 3.5 mm audio cable. Make the connection via an optical audio cable so that the sound is output comes from the TV speakers and the convenient TV speaker at the same time. If connection via an optical audio cable is not possible, output from both speakers may be possible if you change the audio output settings of your TV. For more details, please refer to the TV's operating instructions.
If possible, always connect external devices directly to the TV. If external devices, such as a Blu-ray Disc™ player or game consoles, are connected to the TV via an AV amplifier, audio signals may not be transmitted to the TV via the AV amplifier. For more details, please refer to the operating instructions of the TV, or the AV amplifier.
The sound may no longer be played due to the automatic power cut-off. Turn the volume control of the TV voice amplifier to Off and then back to On to turn the power back on.
Yes, you can. If you encounter difficulties, please refer to the operating instructions of your TV set. You may need to adjust the TV audio setting.
This usually occurs when the TV and the base station (transmitting unit) are connected via a 3.5 mm audio cable. To avoid this problem, use an optical audio cable for the connection. If you cannot connect using an optical audio cable, check that you can set the headphone output settings, change the settings and adjust the headphone volume. For more details, please refer to the operating instructions of the TV.
If you hear a hissing sound from the TV speech amplifier, the problem may be caused by the following influences:
- The 3.5mm audio cable is not connected properly or is dusty. Make sure the audio cable is firmly connected to the headphone jack of your TV and the TV voice amplifier. If the headphone output is dirty, this may result in a poor connection. Disconnect and reconnect the audio cable several times or clean it with a cotton swab or similar. This may improve the connection.
- Mobile phones, Wi-Fi access points, microwave ovens or other devices that transmit radio waves cause interference. Noise can sometimes be generated by radio waves and cause radio interference. E.g. immediately before and/or after using a mobile phone, and when making and receiving calls. Place OSKAR and the base station (transmitting part) at a sufficient distance from such devices or do not use these devices near the TV speech amplifier.
- Silence effect: When OSKAR is switched on and does not receive sound through the TV, a hissing sound may be heard. The sound is related to the volume. If it bothers you, lower the volume.
- Ground problem with the TV: Poorly shielded cables from other devices connected to the TV, such as scart cables from satellite systems, receivers, set-top boxes, etc., can cause interference. The only remedy is to use well-shielded cables.
A1: If the base station and/or OSKAR are too close to wireless devices with a frequency band of 2.4 GHz (e.g.: wireless keyboards, microwave ovens, WLAN devices, radios and others), the sound may be interrupted. If the sound is frequently interrupted, switch off the wireless devices beforehand or use OSKAR as far away from these devices as possible.
A2: The sound may also be interrupted if the base station (transmitting part) and the TV are connected via an optical audio cable and the cable is not properly connected. Plug the cable firmly into the TV and the base station (transmitting part) until you hear a click.
OSKAR was developed primarily for people with hearing impairments. An innovative technology ensures improved understanding of speech that is reproduced via the television. Among other things, it minimises disturbing background noise. Each press of the speech filter button switches to a different voice optimisation mode. A higher level means better audible dialogue. Please note that the general audio quality changes when you increase the voice optimisation function.
Make sure that your OSKAR and the base station (transmitting unit) are paired. Connect your OSKAR to the source through which the channels are played. If the sound is not played back via the TV but via the cable box, set-top box, receiver, etc., connect the transmitter to the audio output (3.5 mm jack or headphone output) or to the optical digital audio output of the cable box.
First connect OSKAR as described in the operating instructions and charge it on the base station. To ensure smooth operation of OSKAR , please remove the device from the base station before switching on the speaker and take OSKAR comfortably with you to your seat. Please note that the base station must still be supplied with power and connected to the TV.
In principle, this is possible. Connect the base station of your OSKAR and the soundbar to your optical digital audio output or the 3.5 mm audio output (headphone connection) of your TV using a commercially available splitter. Please note, however, that there may be a latency in the sound output due to the different signal processing times.
Rechargeable battery, battery and charging time
No. Alternatively, use a separate power supply unit (AC 100 - 240 V - 50/60 Hz) with an output voltage of 5.0 V (volts), a current output of 2.0 A (amps) and USB-C connector and connect it directly to your OSKAR as a power source and to charge the battery.
The charging time for a complete charge of an empty battery is approx. 4 hours. During the charging process, the battery level / charge status indicator lights up red. As soon as the battery is fully charged, the battery level / charge status indicator lights up green.
The charging time for approx. 20% battery strength is approx. 50 minutes.
The low battery / charge indicator on the TV voice amplifier flashes red as soon as the remaining battery strength is less than 20 percent. When the battery is fully charged, it flashes green.
OSKAR can be used continuously for about 16 hours, depending on the conditions of use.
No, the battery is not available separately and should not be changed by you. Please contact the dealer from whom you purchased OSKAR or our service team.
No, you do not need to take your OSKAR off the base when it is fully charged. However, it is recommended not to leave OSKAR charging continuously for more than 7 days.
To save power, switch OSKAR off after use by turning the volume control counterclockwise. There is no on/off switch on the base station (transmitting part). If no audio signal is detected, the base station switches to standby mode after approx. 5 minutes and OSKAR also switches off after 5 minutes.
Range
Purchase a separately available additional base station. Alternatively, use a separate USB power supply (AC 100 - 240 V - 50/60 Hz) with an output voltage of 5.0 V (volts), a current output of 2.0 A (amps) and USB-C plug connection and connect it directly to your OSKAR to charge the battery.
Buy additional OSKAR TV listening amplifiers. The set-up is very simple.
In an open area up to 30 metres. This is a guideline, but reception may be interfered with by other electronics, walls, etc.
Cause of malfunction and remedy
(The connection indicator of the base station and/or on the OSKAR is off or flashing)
- Your OSKAR is switched off
- Turn OSKAR on by turning the on/off volume knob.
- The base station and/or OSKAR has switched off automatically because the TV is switched off or no sound is played for more than 5 minutes.
- Switch your TV set and, if necessary, OSKAR off and on again.
- The connection is not correct.
- Make sure that the USB cable is firmly connected to the base station and the USB power supply.
- Make sure that the optical cable or the 3.5 mm audio cable is firmly connected to the base station and the TV set.
- Your OSKAR and the base station have been decoupled. To reset the base station, proceed as follows:
- Switch off OSKAR.
- Disconnect the USB cable from the base station and wait approx. 30 seconds before reconnecting the USB cable.
- The base station resets and automatically repairs the connection to your OSKAR.
- Switch OSKAR on again. When the base station is paired, the connection indicator lights up continuously.
- Follow the steps below to pair OSKAR again:
- Place OSKAR near the base station.
- Press the pairing button with a pointed object. The pairing indicator of the base station starts flashing.
- Switch on OSKAR and then press and hold the speech filter button for approx. 5 seconds. The connection indicator on OSKAR starts flashing. Both connection indicators light up when paired.
(The connection indicator of the base station and/or on the OSKAR lights up or flashes)
- The TV sound is muted.
- Increase the volume of your TV or unmute it.
- The distance between OSKAR and the base station is too large.
- Move the OSKAR closer to the base station.
- The battery is weak
- Recharge OSKAR.
- The digital sound setting is not set to PCM.
- Set the digital sound setting of your TV to PCM. See the operating instructions for your TV.
- The connection between the base station and OSKAR is interrupted.
- Reconnect the base station and OSKAR.
When connected via the TV headphone socket, there is usually no sound from the TV set.
- Adjust the settings on your TV. See the operating instructions for your TV set
The TV headphone volume is low.
- Set the TV headphone volume higher. See the operating instructions for your TV.
Devices such as smartphones, Wi-Fi access points, microwave ovens, generate radio waves and can cause radio interference.
- Place OSKAR and the base station at a sufficient distance from such devices.
The connection to the 3.5 mm audio connector is not properly made, bad or dusty.
- Connect the audio cable firmly to the TV headphone jack and to the base station. Repeated unplugging and plugging may improve the connection.
The contact between the base station and the TV voice amplifier is poor.
- Wipe the surface with a soft cloth. This can improve the contact. Do not press too hard on the charging points to avoid malfunctions.