Brand Name: GHXAMP Power Source: None Inbox adaptor: No Cabinet Material: Metal Audio Crossover: Three-Way Battery Charge Time: 0 Waterproof: No Voltage range: No voltage Communication: Audio Line Speaker Type: Combination Channels: 2 (2.0) Support APP: No Battery: No Category: Speakers Use: Home Origin: Mainland China Sound Mode: Other Surround sound channel configuration: Others Audio latency: 0 Voice Control: No Power Source: DC Power Source: None Power Source: Ac Number of Loudspeaker Enclosure: 1 Input Power(W): 25-49 W High-concerned chemical: none Output Current: 0 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: None Display Screen: No Certification: CE Wi-Fi Music: Other PMPO: NO. Impedance: 8 Ohm Material: Metal Display Screen: No Built-in Microphone: No Frequency Range: Other Power: 90W Frequency response range: F0-7300Hz Sensitivity: 89DB Net Weight: 696g/pcs Outside diameter: 147MM Diagonal screw hole: 138MM Open Hole diameter: 113MM Speaker Classification: Woofer DJ speaker: yes speaker unit: yes