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SIMOLIO SM-829D2 - User Manual

SIMOLIO SM-829D2
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2.4GHz Wireless TV Headphones
User Manual
SM-829D2
Sales & Support Email: support@simolio.com ( )
US/CA/AU
Signal-to-noise ratio
Transmission mode
Automatic Frequency-Hopping Spread Spectrum
Carrier frequency
2.4GHz ISM BAND
Power supply
output: DC 5V, 1A input : 100~240V
built-in 500mAh Li Battery
Transmitter
Headphone
Frequency response
Distortion
≤1%
20 Hz – 20 KHz
≥70dB
Range
Up to 100 feet (without obstacles)
Working time
approx 10 hours
Charging time
3 hours
TECHNICAL SPECIFICATIONS
LIMITED WARRANTY
Simolio offers a 12-month limited warranty for brand-new purchases from
authorized sellers and resellers. The 12 month warranty will cover defects in
manufacturing and product failure for a period of 12 months from the original
date of purchase. The warranty period is not extended if we repair or replace a
warranted product.
SM-829D2
12
1
2
support_uk@simolio.com ( )UK
22
This warranty is provided at the discretion of Simolio Ltd. And does not cover
cosmetic damage or damage due to acts of nature, accident, misuse, abuse,
negligence, commercial use, or modification of or to any part of the product.
Accessories such as audio cables, power adapter and perishable items such as ear
muffs and batteries are not covered under this warranty.
Please contact:
support@simolio.com (for US/CA/AU) or
support_uk@simolio.com(for UK)
for any questions or customer support.
Response Time: 2-24h, excl. Holidays
www.simolio.com www.amazon.com/simolio

Table of Contents

Questions and Answers

  • M
    Michael PotterAug 12, 2025
    How to fix SIMOLIO SM-829D2 with no sound?
    • J
      Jesse DavidAug 12, 2025
      To fix a SIMOLIO Headphone with no sound, consider these solutions: 1. Power on the transmitter by switching to MONO or STEREO. 2. Ensure the transmitter's AC adapter and audio cable are properly connected. 3. If using an optical cable, unplug any analog audio cables from the transmitter. 4. Verify the connection between the transmitter and the audio source. 5. Turn on the audio source and increase its volume. 6. Set the TV’s AUDIO OUT setting to "External TV Speakers" (refer to your TV manual). 7. Set the audio output format of your TV or AV devices to PCM. 8. Turn the headphone off and then on again. 9. Insert the battery correctly or fully charge it. 10. Try a different audio output port.
  • S
    Stephanie FritzAug 16, 2025
    What to check if my SIMOLIO Headphone has no voice?
    • E
      Emily ReedAug 16, 2025
      If your SIMOLIO Headphone has no voice, check the following: * Confirm the transmitter is powered on (switch to MONO or STEREO). * Verify the AC adapter and audio cable of the transmitter are securely plugged in. * If using an optical cable, ensure the analog audio cable is unplugged from the transmitter. * Check the connection between the transmitter and the audio source. * Ensure the audio source is on and the volume is adequate. * Verify that the TV audio output is set to "External TV Speakers" (see your TV manual). * Confirm the audio out format of your TV or AV devices is set to PCM. * Try turning the headphone off and on again. * Check the battery insertion or charge level. * Test with another audio output port.
  • S
    stephen81Aug 20, 2025
    How do I troubleshoot a SIMOLIO Headphone that isn't producing sound?
    • C
      carrie69Aug 20, 2025
      To troubleshoot a SIMOLIO Headphone that isn't producing sound, try these steps: * Make sure the transmitter is on. Switch to MONO or STEREO. * Check that the transmitter's AC adapter and audio cable are well connected. * If you're using an optical cable, unplug the analog audio cable from the transmitter. * Confirm that the connection between the transmitter and the audio source is correct. * Ensure the audio source is turned on, and the volume isn't too low. * Set the TV’s AUDIO OUT setting to "External TV Speakers" (consult your TV manual). * Verify the audio out format of your TV and AV devices is set to PCM. * Try turning the headphone off and then back on. * Check that the battery is correctly inserted or fully charged. * Try using a different audio out port.
  • L
    Larry RiveraNov 2, 2025
    What to do if my SIMOLIO SM-829D2 Headphone doesn’t work or I receive no voice?
    • K
      Kylie KnightNov 2, 2025
      If your SIMOLIO Headphone isn’t working or you're not receiving any sound, there are several potential causes and solutions: * Ensure the transmitter is powered on by switching to MONO or STEREO. * Check that the AC adapter and audio cable of the transmitter are securely plugged in. * If using an optical cable, unplug the analog audio cable from the transmitter. * Verify the connection between the transmitter and the audio source is correct and secure. * Make sure the audio source (TV or related AV devices) is turned on and the volume is at a sufficient level. * Check your TV's audio output setting (in your TV user manual) and set it to "External TV Speakers." * Ensure the audio output format of your TV or AV devices is set to PCM (e.g., Settings > Sound > Digital Audio Out ...
  • K
    Kim ArcherNov 6, 2025
    Why is my SIMOLIO Headphone not working?
    • J
      Jonathan ShieldsNov 7, 2025
      Your SIMOLIO Headphone may not be working due to several reasons: * The transmitter might not be powered on. Try switching to MONO or STEREO. * The transmitter might not be connected properly. Ensure the AC adapter and audio cable are securely plugged in. * If you are using an optical cable, an analog audio cable might be incorrectly plugged into the AUX IN jack of the transmitter; unplug it. * The connection between the transmitter and the audio source may be incorrect. Verify that the connection is correct and in place. * The audio source (TV, AV devices) may be off or the volume set too low. Turn on the audio source and increase the volume. * The TV audio output may be disabled. Change the TV’s AUDIO OUT setting to "External TV Speakers" as described in your TV manual. * ...
  • C
    chris39Nov 23, 2025
    Why can't I hear anything from my SIMOLIO SM-829D2?
    • J
      Joseph BatesNov 23, 2025
      If you can't hear anything from your SIMOLIO Headphone, it could be due to these reasons: * The transmitter may not be powered on; switch to MONO or STEREO. * The transmitter might not be properly connected. Make sure the AC adapter and audio cable are plugged in correctly. * If you're using an optical cable, the analog audio cable may be interfering. Unplug it from the transmitter. * The connection between the transmitter and the audio source could be incorrect. Ensure it's properly connected. * The audio source (like your TV) may be off or the volume too low. Turn it on and increase the volume. * Your TV's audio output might be disabled. Change the TV’s AUDIO OUT setting to "External TV Speakers" using your TV manual. * The audio out format of your TV or other AV devices m...
  • A
    Anthony LoweNov 28, 2025
    What are the possible causes of a SIMOLIO SM-829D2 not working?
    • W
      William WalkerDec 1, 2025
      A SIMOLIO Headphone not working can stem from various causes: * The transmitter isn't powered on. Solution: Switch to MONO or STEREO. * The transmitter isn't well connected. Solution: Ensure the AC adapter and audio cable are properly plugged in. * Analog audio cable is interfering when using optical cable. Solution: Unplug the analog audio cable from the transmitter. * Incorrect connection between transmitter and audio source. Solution: Verify the connection is correct. * Audio source is off or volume is too low. Solution: Turn on the audio source and adjust the volume. * TV audio output is disabled. Solution: Change the TV’s AUDIO OUT setting to "External TV Speakers." * Incorrect audio out format (not PCM). Solution: Set it to PCM in the settings. * Headphone powered of...

Summary

Product Diagram

Transmitter Diagram

Diagram illustrating the SIMOLIO SM-829D2 transmitter components and ports.

Receiver Diagram

Diagram illustrating the SIMOLIO SM-829D2 receiver components and controls.

How to Use the SIMOLIO SM-829 D2

Check TV;Audio Source Output Options

Verify TV or audio source output ports before system setup.

Turn on Transmitter and Headphone

Steps to power on both the transmitter and the headphone unit.

Connect Transmitter to TV;Audio Source

Guide on connecting the transmitter to the TV or audio source device.

Digital Optical Connection Guide

Connect Optical Cable to TV

Hook up SIMOLIO to the Optical Audio Out Port of the TV/other Audio Device.

Configure TV Audio Format and Speaker Settings

Adjust TV audio format to PCM and speaker output to External Speakers.

RCA Analog Connection Guide

Connect RCA Cable to TV

Hook up SIMOLIO to the RCA Audio Out Port of the TV/other Audio Device.

Configure TV Audio Output and Speaker Settings

Ensure TV uses Red/White ports for audio out and sets speaker to External.

3.5 mm;AUX Analog Connection Guide

Connect 3.5 mm Audio Cable to TV

Hook up SIMOLIO to the 3.5mm Audio Out Port of the TV/other Audio Device.

Configure TV Audio Output and Speaker Settings

Ensure TV speaker is set to 'Headset' for audio out.

Other Connections and Scenarios

Digital Coaxial Audio Out Port Connection

Connect via digital coaxial using a digital-to-analog converter.

Optical Audio Out Port Occupied by Soundbar

Utilize by-pass feature for optical or AUX/RCA connections.

AV Receiver with 6.35 mm Phone Jack

Connect to AV Receiver's 6.35mm PHONE OUT using an adapter.

Using Multiple Headphones

Simultaneous Use of Two Headsets

Place two SIMOLIO SM-829D2 sets at least 10 meters apart for simultaneous use.

Charging the Headphone

Charging via Magnetic Stand

Place headphone on magnetic charging stand; red LED indicates charging.

Charging via USB Cable

Connect headphone to a USB wall charger or port using the included cable.

Charging Using Spare Battery

Replace headphone battery with a spare from the transmitter's compartment.

Customizing Your SIMOLIO SM-829 D2

Proper Headphone Wearing and Fit

Adjust retractable headband for proper fit and check rotation direction.

Balance Control Adjustment

Adjust BAL dial to equalize volume for left/right ears.

Tone Control Adjustment

Select TONE (D+/D/S) to optimize TV voice clarity.

Mono;Stereo Mode Selection

Switch between STEREO for music and MONO for clearer TV dialogues.

Ambient Sound Function Usage

Use MIC ON/OFF button to hear ambient sound or return to wireless listening.

Troubleshooting Common Issues

Transmitter Not Working or No Voice

Check power, connections, audio source, and TV output format (PCM).

Headphone Not Working or No Voice

Verify TV volume, headphone range, audio source volume, and headphone status.

Sound Cuts In and Out or Noise Occurs

Check transmitter placement, audio source connection, and audio out port.

Voice Heard Only With One Ear

Check RCA cable insertion, transmitter mode (MONO), and balance control.

Headphone Cannot Be Charged Successfully

Inspect battery insertion, charging pins alignment, and use compatible adapters/cables.

No Sound When Using By-Pass Feature

Ensure correct optical or AUX/RCA cable connection to sound system.

SIMOLIO SM-829D2 Specifications

General IconGeneral
BrandSIMOLIO
ModelSM-829D2
CategoryHeadphone
LanguageEnglish

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