This product is a passive #speaker, without a built-in power amplifier, it needs an external power amplifier to use. Applicable to: changing car CD to home use, home theater as the main speaker or surround box, teaching speaker or conference speaker, etc.

Passive #speakers are the ordinary #speakers that we usually use without power amplifier circuit inside. Although passive #speakers do not have amplifiers, they often have crossover networks and impedance compensation circuits. Active #speakers are usually marked with parameters such as the output power, input impedance, and input signal level of the built-in amplifier.

Features 1. 2" full paper cone treble vocal weapon is natural, smooth and precise 2. 4" professional mid-bass sound surging harmoniously and cleanly, stable and loud sound field, easy to control various use scenarios 3. The front hyperboloid guide tube is flexibly placed on the desktop and wall, so that the air flow can flow smoothly without sudden change. Compared with the ordinary inverted tube, it can effectively avoid the airflow whistling sound and the sound is purer, and the low frequency sink is thicker . 4. E0 grade environmental protection MDF cabinet professional material to avoid resonance