Brand Name: GHXAMP Power Source: None Inbox adaptor: No Cabinet Material: Metal Audio Crossover: Three-Way Waterproof: No Communication: Bluetooth Communication: Audio Line Speaker Type: Combination Channels: 1 Support APP: No Battery: No Category: Speakers Use: others Origin: Mainland China Sound Mode: Other Voice Control: No Power Source: DC Number of Loudspeaker Enclosure: 2 Input Power(W): 25-49 W High-concerned chemical: None Input/Output: Other Intelligent Personal Assistant: None Remote Control: No Support Apt-x: No Output Voltage: Other Support Memory Card: No Feature: None Playback Function: DVD Playback Function: Radio Playback Function: CD Playback Function: MP3 Playback Function: Other Display Screen: No Certification: None Wi-Fi Music: Other PMPO: Other Impedance: 4 Ohm Material: Metal Display Screen: No Built-in Microphone: No Frequency Range: Other Category: 3 inch midrange speaker unit Rated impedance: 4ohm Rated Power: 15W Used: For ktv speakers,car audio upgrade Feature: HIFI,double magnetic Bluetooth speaker DIY: Yes