4Channel Smart Home Audio Bluetooth Wall Amplifier Specifications:
● Power: AC220V(50HZ) allow 110V-250V
● Main screen size: 4 inch HD screen
● Output Power: RMS 4x20W
● Output Impedance: 4-8Ω
● T.H.D.: 0.03%
● Frequency Response: 20Hz-20KHz
● Audio S/N: 98dB
● Expand TF card memory: 32G
● USB: 0TG USB function, 32G can be read
● Size: 86*86*11mm
Framless Stereo In-Ceiling Speaker Mini Size Specifications:
● Power 10W
● Input: 8Ω
● Speaker Unit: 4.5”x1
● Sensitivity (1W/1M): 89dB ± 3dB
● Frequency Response: 100Hz-16KHz
● Material: plastic frame + iron mesh cover
● Installation Cutout Size: Φ148mm
● Dimension: Φ160x56mm
● Net Weight: 0.42KG
4 x ceiling speaker
1 x mounted box
1 x remote control
1 x bracket and screw
● In some country, the FM Radio Function may not works well, because the signal may be affected due to different frequencies in different countries and regions.
● Languages only support English and Chinese , please check before your purchase.
● If there is any questions about the product or you need our technical support, please contact us.
● Video Playlist: https://youtube.com/playlist?list=PLo58qiwgS__woxhjGV9BWnr_wl9zyXfqIConnection Guide https://youtu.be/G7mWynbcC3Q
1 How to connect antenna with the wall amplifier https://youtu.be/YRYsBwAUYhw
2 How to use FM function 2 https://youtu.be/GHbV33zwiwY
3 How to connect with phone via Bluetooth https://youtu.be/0QuwVKs4dHQ
4 How the wall amplifier controls and be controlled by the phone https://youtu.be/cEZJtBWBu8I
1. Timed message: set the time to automatically play the message content
2. Support power on automatically play songs
3. Power-off memory function: remember the state played before the last shutdown
4. Sound function: support ordinary, rock, classical, jazz, pop and other sound effects
5. Support trigger doorbell function, DB+GND
6. Support linkage trigger to play music, GND+ trigger playback
7. Support linkage triggering boot, GND+ trigger playback, expenditure trigger shutdown, GND+ timing output
8. Supports timing output level signal linkage with other devices, GND+ timing output
9. Time switch machine, custom timing boot song
1. Speaker: Speaker wire (200 cores). RVH2X100,RVH2X200 connect to SPK R+ SPK R-.
2. Audio output wire: Audio wire (three core shielded wire: commonly known as microphone wire). RVVP2X0.5, RVVP2X0.75 connect to OUT R +OUT L+GND. Can be connected to other amplifiers.
3. Audio input wire: Audio wire (three core shielded wire: commonly known as microphone wire). RVVP2X0.5, RVVP2X0.75 connect to AUX L+AUX R+GND.
4. Video output: Connect to GND+ATV for video output.
5. Trigger the doorbell: Connect to GND+DB to trigger the doorbell.
6. FM: Radio antenna
7.USB: External OTG USB, can read U disk with adapter.
8.TF card: Read TF card interface.
9.Power switch: long press for 2 seconds to turn on, long press for 2 seconds to turn off, short press for lock screen / unlock.
10.Volume down key
11.Volume up key
12.Microphone
13.Power supply terminal: Connect AC110V-240V power supply.
 allow 110V-250V ● Main screen size: 4 inch HD screen ● Output Power: RMS 4x20W ● Output Impedance: 4-8Ω ● T.H.D.: 0.03% ● Frequency Response: 20Hz-20KHz ● Audio S/N: 98dB ● Expand TF card memory: 32G ● USB: 0TG USB […]){kind=link}
M***i
Everything perfect. Very good product .. The little thing…
j***e
In the absence of trying everything perfect
A***s
Thank you so much!
AliExpress Shopper
Just didn’t send anything! Although it was written express!!!!
s***o
I liked it very much, high quality everything is fast and good, I recommend it
М***ч
In general, not bad. The screen slows down a bit. Budget solution. For low frequencies, of course, a sub is needed. There is no speaker at all in sound somewhere from the 300. It is inconvenient that when setting the equalizer, the sound is interrupted
R***l
Do not buy here in this app both the seller and the AliExpress do not serve place the order on May 3 and supposed to arrive on the 16th and never arrived and I contact the seller and did not want to return my Money and I contact ali express and they just want to return the 50% of what the item cost and the problem was not mine was all of them I do not recommend it to anyone I will not buy more nothing in this app are scammers
C***a
Received the item and bench test.
1. USB, SD and FM source working.
2. Set correct time stamp.
3. LCD screen very responsible.
Though product not performing well due to static noise, i still give credit to seller for having great technical support (2 nights). Looking forward for the replacement unit.
Found issue with the audio output.
1. Continous static noise at volume 0.
2. More static noise as you increase the volume.
Fault Isoloation
1. Installed ferrite core with speaker cable.
2. Reboot the system.
3. Update firmware.
4. Tested other speaker 8 ohm, 20 Watts
So far the issue was still present. This can be power supply issue, pre-amp or amplifier issue.
Resolution
1. Seller to send brand new replacement unit.