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Speakers - passive, 2.0 channel with power performance of 150 W RMS, 87 dB/mW, frequency range from 49 Hz to 20000 Hz, 2-band, impedance: 4 Ohm, analogue audio
Bluetooth Speaker - active, with power performance of 20W, frequency range from 65 Hz to 20000 Hz, Bluetooth 5.3, microphone, USB charging, IP67 protection level, control via device with iOS or Android, battery life of 32 h
Speakers - active, 2.1 channel with power performance of 150 W RMS, active subwoofer, frequency range from 200 Hz to 40000 Hz, 3-band, optical digital audio, coaxial digital audio, RCA (cinch), HDMI, Bluetooth, Hi-Res audio, supports LDAC and SBC, control via device with iOS or Android, remote control
Bluetooth Speaker - active, with power performance of 180W, frequency range from 42 Hz to 20000 Hz, AUX, Bluetooth 5.3, USB charging, IP55 protection level, supports SBC and LC3, battery life of 40 h
Great prices, great interest rates! - PC Speakers - additional info
Speakers are electro-acoustic transducers. The scientific name tells us that the speaker is a device that converts electrical impulses into sound. It consists of a magnet and a diaphragm for converting electrical signals to sound waves, then radiate them into the air.
The human ear can hear sounds at frequencies from 20 Hz to 20 kHz. Therefore, speakers are constructed to encompass this ideal sound spectrum. The lower the frequency, the deeper the tone. It is very effective for movies with action and explosions etc., and for listening to music with deep bass and drums.
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