Essential details
Lead time:5-7天
Size:L(48.4)*W(45)*H(8.8) cm
N.W:20.6 kg
Shipping:express delivery
Product Introduction
Model: OBT-6650
Rated power: 650W
Power consumption: 1600W
Speaker outputs: 70V, 100V & 4-16Ω
Input sensitivity & Impedance: MIC 1,2,3: 5mV/600Ω, unbalanced 6.35 screw input; AUX 1,2: 350mV/10K, unbalanced RCA screw input
Output sensitivity & Impedance: Mix out: 1000mV/470Ω, unbalanced RCA screw output
Overload source electromotive force: MIC 1,2,3: ±12dB, unbalanced 6.35 Screw Input; AUX 1,2: ±20dB, Unbalanced RCA Screw Input; MP3: ±20dB, Unbalanced Input
Tone: Bass: ±10dB at 100Hz; Treble: ±10dB at 10KHz
Frequency response: 50Hz-16KHz (+1dB, -3dB)
S/N ratio: MIC 1,2,3: 66dB; AUX 1,2: Less than 80dB
THD: 1KHz Less than 0.5%, 1/3 Output Power Consumption
Muting function: 0-30 dB adjustable
Crosstalk: Less than 50dB
Cooling: Forced air from front to rear, start built-in fan when radiator temperature reaches 45°C
Protection: Over heat, over load & short circuit
Power supply: AC220V/50Hz
Dimensions (W * D * H): 484x450x88mm
Panel Material: aluminum
Weight: 20.6Kg
Rated power: 650W
Power consumption: 1600W
Speaker outputs: 70V, 100V & 4-16Ω
Input sensitivity & Impedance: MIC 1,2,3: 5mV/600Ω, unbalanced 6.35 screw input; AUX 1,2: 350mV/10K, unbalanced RCA screw input
Output sensitivity & Impedance: Mix out: 1000mV/470Ω, unbalanced RCA screw output
Overload source electromotive force: MIC 1,2,3: ±12dB, unbalanced 6.35 Screw Input; AUX 1,2: ±20dB, Unbalanced RCA Screw Input; MP3: ±20dB, Unbalanced Input
Tone: Bass: ±10dB at 100Hz; Treble: ±10dB at 10KHz
Frequency response: 50Hz-16KHz (+1dB, -3dB)
S/N ratio: MIC 1,2,3: 66dB; AUX 1,2: Less than 80dB
THD: 1KHz Less than 0.5%, 1/3 Output Power Consumption
Muting function: 0-30 dB adjustable
Crosstalk: Less than 50dB
Cooling: Forced air from front to rear, start built-in fan when radiator temperature reaches 45°C
Protection: Over heat, over load & short circuit
Power supply: AC220V/50Hz
Dimensions (W * D * H): 484x450x88mm
Panel Material: aluminum
Weight: 20.6Kg
High-grade aluminum panel with high 2U, adopt polishing technology. This series combines the preamplifier with power amplifier.
Built-in BT and USB player and FM Radio.
4 lines of auxiliary audio inputs, and 3 lines of microphone inputs and 1 line of output. Mic1 has forced switching and priority function over 2 lines of auxiliary inputs. Protected against short-circuit, overheating and speaker overload. It has an indicator indicating protection and buzzer alarm.
Output Power: 650W (optional) at 100V, 70V, 4-16 Ohm.
Built-in BT and USB player and FM Radio.
4 lines of auxiliary audio inputs, and 3 lines of microphone inputs and 1 line of output. Mic1 has forced switching and priority function over 2 lines of auxiliary inputs. Protected against short-circuit, overheating and speaker overload. It has an indicator indicating protection and buzzer alarm.
Output Power: 650W (optional) at 100V, 70V, 4-16 Ohm.
This Public Address System 650W Combined Constant Voltage Amplifier, making it ideal for schools, offices, restaurants, and small to medium venues requiring a compact all-in-one solution.
In summary, this Public Address System 650W Combined Constant Voltage Amplifierwith built-in BT/USB/FM is the perfect choice for any facility needing a reliable, feature‑rich, and easy‑to‑install public address and background music system.

