SIMOLIO SM-561 Two Channel IR Wireless Headphones User Manual
- June 12, 2024
- SIMOLIO
Table of Contents
Two-channel
IR Wireless Headphones
SM-561
User Manual
1. Features
(1). Compatible with any universal-frequency car DVD systems (Universal IR
frequencies: Channel A: L/2.3MHZ,R/2.8MHZ; Channel B: L/3.2MHZ,R/3.8MHZ).
(2). Dual channel for your option.
(3). The automatic power-off function allows the headphones to be switched off
after approximately 10 minutes when there is no audio signal to save power.
(4). Designed with a 3.5mm AUX sharing jack allows another earbuds/ headphones
to plug in to share the movies/ music.
(5). It can be used as a wired headphones by the included detachable AUX
cable, or equipped with an IR transmitter for watching TV at home, SIMOLIO IR
transmitters SM-261A or SM-264D are suggested for better performance.
2. Parts Introduction
Fig 1
- Audio-in jack
- Volume control
- A/B channel & Power off
- Power indicator
Fig 2
- Battery cover
- Closed position
- Open position
3. User Guide
(1). Install the batteries properly
Please use 2×AAA premium alkaline batteries and make sure they are inserted
properly (not suggest to use rechargeable NI-MH battery).
Note:
- Revolving clasp battery compartment structure, install the battery cover in the correct position, then rotate it clockwise until you hear a “click”, or it won’t stay latched ( Ref. Fig 2).
(2). Power on the headphones
Select to Channel A or Channel B, make sure the headphones’ channel is same as
the relative transmitter’s/ DVD’s, otherwise will cause intermittent sound
issues.
Note:
- If it’s the first time to use SIMOLIO universal IR headphones and experience no sound, audio cuts, only hear sound by one side, most are caused by car DVD’s frequencies deviation (non-universal), then you will need to return these headphones and purchase the original ones.
Fig 3
-
Please pay attention to the IR transmitting angel & distance, the best audio signal will be obtained if you sit directly in front of the monitor within 6 feet. If you sit on either side of the monitor you can expect the same great reception within 35 degrees to the left or the right of the monitor. Sound will be cracking if sit too far away, or not in sight of IR transmitter, which is limitation of the IR system type, not the product itself. (Ref. Fig 3)
-
For two kids in the same row and are watching different movies on two DVD players, please set each DVD on a different channel (channel A & channel B), then set the headphones to the channel of the DVD they would like to listen to. Please ask your kids to face to the DVD and don’t sit too close to each other to avoid the interference. (Ref. Fig 4)
-
If the headphones have been powered off automatically, please turn off it first, then switch to A or B to turn on the headphones.
-
Please turn off the headphones and take out the batteries before storage.
channel A
channel B
Fig 4
4. How to Adjust the Headband to Fit Better
The headband incorporates memory elastic stainless steel strips inside, you can remould the headband shape to fit you better, or adjust the wearing angle to make the headphones fit snug on your ears.( Ref. Fig 5)
1
SHAPE1
| Flexible Durable
⇐ Adjust the Headband ⇒
2
|
3
SHAPE2
---|---|---
Fig 5
5. Trouble Shooting
Problem
| Causes|
Solutions
---|---|---
No voice| The headphones/ transmitter is not powered on.| Power on the
headphones/ transmitter.
The volume of headphones/ audio source is zero or too low.| Turn up the volume
at a sufficient level.
Beyond the working range.| Move the headphones in the working range of the
transmitter.
Batteries have been run out.| Use new 2×AAA premium alkaline batteries and
insert properly.
The IR sensor of DVD player is not universal.| Return SIMOLIO headphones and
buy the original headphones, or turn off the IR sensor of DVD player, buy
SIMOLIO IR transmitter as an alternative.
Noise/ Cuts in and out| The IR sensor of DVD player is not universal.|
Return SIMOLIO headphones and buy the original headphones, or turn off the IR
sensor of DVD player, buy SIMOLIO IR transmitter as an alternative.
Headphones’ channel is not same as the relative transmitter’s.| Make sure the
headphones’ channel is same as the relative transmitter’s.
Blocked by obstacles.| Make sure there is no obstacles between the transmitter
and the headphones (esp., please don’t cover your hands on the IR sensors of
the headphones), and pay attention to the IR transmitting angle and distance.
Interference from other transmission sources| Leave far away from the
interfering source.
The batteries are in low power.| Change another new 2×AAA premium alkaline
batteries and insert properly.
The volume of audio source is too low.| Turn up the volume of the audio device
at a sufficient level.
Poor IR transmitting modules.| If the IR sensor in the DVD player can be
turned off, please turn off it and buy SIMOLIO IR transmitter as an
alternative.
Poor mounting angle of infrared-ray emission tubes.
The quantity of infrared-ray emission tubes are not enough.
6. Technical Parameters
(1) Power Supply: 2XAAA alkaline batteries
(2) Working Current: 30mA ± 5mA
(3) Receiving Frequency:
A channel: L/2.3MHz, R/2.8MHz (Universal standard)
B channel: L/3.2MHz, R/3.8MHz (Universal standard)
(4) Receiving Distance: ≥ 6m
(5) Frequency Response: 20Hz~20KHz
(6) Power Output: ≥ 8mW
(7) S/N Ratio: ≥ 60dB
SM-561 IR wireless headphones are compatible with universal vehicle IR
entertainment systems, allowing kids to enjoy excellent sound clarity from
movies, videos and music without disturbing other passengers and drivers.
Keep your kids happy and leave you peace on the go.
For any questions , please contact:
[email protected] ( NA/AU )
[email protected] ( UK)