1. ບົດແນະນຳ
ຂອບໃຈສໍາລັບການຊື້asing the Edifier R990BT Bluetooth Computer Speakers. These 2.0 active bookshelf speakers are designed to provide high-quality audio for your PC, smartphone, tablet, and other compatible devices. Featuring Bluetooth V5.4 connectivity and dual RCA inputs, the R990BT offers versatile audio options in a classic MDF enclosure. Please read this manual thoroughly to ensure proper setup and optimal performance of your speakers.
2. ເນື້ອໃນຊຸດ
ກະລຸນາກວດສອບວ່າສິນຄ້າທັງໝົດມີຢູ່ໃນຊຸດ:
- Edifier R990BT Active Bookshelf Speakers (1 Pair)
- ສາຍເຊື່ອມຕໍ່ລຳໂພງ
- ສາຍສຽງ RCA ຫາ RCA
- ສາຍໄຟຂະ ໜາດ 3.5mm ເຖິງ RCA Audio
- ສາຍໄຟ
- ຄູ່ມືເລີ່ມຕົ້ນດ່ວນ
3. ຕັ້ງຄ່າ
3.1 ການວາງລຳໂພງ
Place the speakers on a stable, flat surface such as a desk or shelf. For optimal stereo imaging, position the speakers equidistant from your listening position, forming an equilateral triangle. Ensure there is adequate space behind the speakers for cable connections and ventilation.

Image: Edifier R990BT speakers positioned on a desk, demonstrating typical placement for computer use.
3.2 ການເຊື່ອມຕໍ່ລໍາໂພງ
- Connect the Passive Speaker: Use the included speaker connection cable to link the active speaker (with controls) to the passive speaker. Ensure the correct polarity (+ to + and - to -) for proper sound reproduction.
- ເຊື່ອມຕໍ່ກັບພະລັງງານ: Plug the power cable into the active speaker's power input and then into a wall outlet.
3.3 ການເຊື່ອມຕໍ່ແຫຼ່ງສຽງ
The R990BT speakers support both wired (RCA) and wireless (Bluetooth) connections.
Wired Connection (RCA)
The speakers feature two sets of RCA input ports (Line In 1 and Line In 2) for connecting two different wired audio devices simultaneously.
- Use the RCA to RCA cable to connect devices with RCA outputs (e.g., CD player, turntable with pre-amp).
- Use the 3.5mm to RCA cable to connect devices with a 3.5mm audio jack (e.g., computer, smartphone, tablet).

Image: Close-up of the rear panel of the active speaker, highlighting the dual RCA input ports (Line In 1 and Line In 2) and the power input.
ການເຊື່ອມຕໍ່ Bluetooth
The R990BT features Bluetooth V5.4 for wireless audio streaming.
- Turn on the speakers.
- Press the volume/input knob on the rear panel to select the Bluetooth input. The indicator light will flash blue.
- ໃນອຸປະກອນສຽງຂອງທ່ານ (ໂທລະສັບສະຫຼາດ, ແທັບເລັດ, ຄອມພິວເຕີ), ເປີດໃຊ້ Bluetooth ແລະຊອກຫາອຸປະກອນທີ່ມີຢູ່.
- Select "EDIFIER R990BT" from the list to pair. The indicator light will turn solid blue once connected.

Image: A single Edifier R990BT speaker on a desk next to a laptop, symbolizing the ease of Bluetooth connectivity.
4. ຄໍາແນະນໍາການດໍາເນີນງານ
4.1 ເປີດ/ປິດ
The power switch is located on the rear panel of the active speaker. Flip the switch to the 'ON' position to power on the speakers. Flip to 'OFF' to power off.
4.2 ການຄວບຄຸມປະລິມານ
The large knob on the rear panel of the active speaker controls the master volume. Rotate clockwise to increase volume and counter-clockwise to decrease volume.

ຮູບພາບ: ລາຍລະອຽດ view of the multi-function control knob on the rear of the speaker, used for volume adjustment and input selection.
4.3 ການຄັດເລືອກການປ້ອນຂໍ້ມູນ
Press the volume/input knob on the rear panel to cycle through the available audio inputs: Line In 1, Line In 2, and Bluetooth. The indicator light will change color or flash to indicate the selected input mode.
- Line In 1 / Line In 2: Solid green or red indicator (depending on model/firmware).
- Bluetooth: Flashing blue (pairing mode) or solid blue (connected).
4.4 Using the Edifier ConneX App
For enhanced control and customization, download the Edifier ConneX mobile application. The app allows you to adjust equalization settings and access additional features for your R990BT speakers.
- Download the Edifier ConneX app from your device's app store.
- Ensure your speakers are powered on and connected via Bluetooth to your mobile device.
- Open the app and follow the on-screen instructions to connect to your R990BT speakers.

Image: The official logo for the Edifier ConneX mobile application.
5. ບໍາລຸງຮັກສາ
5.1 ການທໍາຄວາມສະອາດ
ເພື່ອຮັກສາຮູບລັກສະນະ ແລະ ປະສິດທິພາບຂອງລຳໂພງຂອງທ່ານ:
- Wipe the speaker cabinets with a soft, dry cloth.
- Do not use liquid cleaners, aerosols, or abrasive chemicals, as these may damage the finish or internal components.
- Gently brush dust from the speaker grilles using a soft brush or vacuum cleaner with a brush attachment.
5.2 ການເກັບຮັກສາ
If storing the speakers for an extended period, ensure they are powered off and disconnected from the power source. Store them in a cool, dry place away from direct sunlight and extreme temperatures.
6. ການແກ້ໄຂບັນຫາ
If you encounter any issues with your Edifier R990BT speakers, please refer to the following common problems and solutions:
| ບັນຫາ | ສາເຫດທີ່ເປັນໄປໄດ້ | ການແກ້ໄຂ |
|---|---|---|
| ບໍ່ມີສຽງ |
|
|
| ສຽງບິດເບືອນ |
|
|
| Bluetooth not connecting/disconnecting |
|
|
| Difficulty switching inputs |
|
|
7. ຂໍ້ມູນຈໍາເພາະ
Detailed technical specifications for the Edifier R990BT speakers:
- ຊື່ຕົວແບບ: R990BT
- ປະເພດລຳໂພງ: ຊັ້ນວາງປຶ້ມ
- ປະເພດການຕິດຕັ້ງ: Shelf Mount/Tabletop Mount
- ວັດສະດຸ: MDF (Medium-Density Fiberboard)
- ເຕັກໂນໂລຍີການເຊື່ອມຕໍ່: Bluetooth V5.4, Wired (Dual RCA)
- ໂModeດອອກສຽງ: ສະເຕຣິໂອ (2.0)
- ລຳໂພງກຳລັງຜົນຜະລິດສູງສຸດ: 24 ວັດ (RMS)
- ເສັ້ນຜ່າສູນກາງ Woofer: 4 ນິ້ວ
- ເສັ້ນຜ່າສູນກາງ tweeter: 1 ນິ້ວ
- ການຕອບສະໜອງຄວາມຖີ່: 18 KHz (Upper limit, typical for compact speakers)
- ອັດຕາສ່ວນສັນຍານເຖິງສິ່ງລົບກວນ: 85 dB
- ວິທີການຄວບຄຸມ: Touch (via rear knob)
- ແຫຼ່ງພະລັງງານ: Corded Electric (100-240V ~ 50/60Hz)
- ຂະໜາດຜະລິດຕະພັນ: 11.5"D x 7.5"W x 17"H (per speaker, approximate)
- ນ້ໍາຫນັກລາຍການ: 7.94 ປອນ (ຕໍ່ລຳໂພງ, ປະມານ)
- ສີ: ດຳ
- ອຸປະກອນທີ່ເຂົ້າກັນໄດ້: Devices with Bluetooth technology, devices with RCA or 3.5mm audio output.
8. ການຮັບປະກັນແລະການສະຫນັບສະຫນູນ
8.1 ຂໍ້ມູນການຮັບປະກັນ
The Edifier R990BT speakers come with a Limited Warranty. Please refer to the warranty card included in your package or visit the official Edifier website for detailed terms and conditions regarding your product's warranty coverage.
8.2 ສະຫນັບສະຫນູນລູກຄ້າ
For technical assistance, troubleshooting, or general inquiries, please contact Edifier customer support. Contact details can typically be found on the official Edifier webເວັບໄຊ ຫຼືໃນຄູ່ມືການເລີ່ມຕົ້ນດ່ວນຂອງຜະລິດຕະພັນຂອງທ່ານ.
ສະຫນັບສະຫນູນອອນໄລນ໌: ຢ້ຽມຢາມ www.edifier.com for FAQs, support resources, and contact information.





