Product Details

OBT-6554 USB and SD card 550W 4 zone multiplex amplifier for PA system

Application:

Used for every public place: Shopping center, School, Airport, Raillway stataion, Building, Mining pool,

Residential area, highway, toll plaza,Factory,Supermarket,Parking,Stadium,Mountain etc.

Features:

2U standard 19-inch industrial chassis, ergonomic design, sophisticated technology, filling with the high-grade temperament;
3channels of MICs, 2 channels of audio inputs, an auxiliary audio output;
Forcibly cutting priority function, Mic 1 has the highest priority, the other channels have second priorities;
2 channels of Mic Line Inputs (sensitivity of MIC2/MIC3 channel line input is 775mv);
Mic and Aux have volume control knoband treble, bass tone control knob;

Amplifier output comes with four partitions, you can select the partition state;
The device has a good short circuit, overheat, overload automatic detect and protect function, the indicator will light to warm, warning buzzerwill ring to alarm;
Linking two machines can achieve independent volume control for each channel for eight partition, as well as three machines can achieve independent volume control for each channel for twelve partition ,and so forth;
2 kinds of power output modes: constant voltage output 100V, 70V and constant resistance output 4~16Ω.,4 partition output modes: constant voltage output 100V

Technical parameters:

Model	OBT-6154	OBT-6254	OBT-6354	OBT-6454	OBT-6554	OBT-6654
Rated Power Output	150W	250W	350W	450W	550W	650W
Speaker Outputs	70V, 100V & 4~16Ω
Input Sensitivity & Impedance	MIC 1, 2, 3: 5mV/600Ω
	MIC 2, 3 Line Input: 775mV/10KΩ, Unbalanced RCA Screw Input
	AUX 1, 2: 350mV/10KΩ, Unbalanced RCA Screw Input
Output Sensitivity & Impedance	MIX OUT: 1000mV/470Ω, Unbalanced RCA Screw Output
Overloadsourceelectromotive force	MIC 1, 2, 3: >12dB, Unbalanced TRS Screw Input
	MIC 2, 3 Line Input: >12dB, Unbalanced RCA Screw Input
	AUX 1,2,3,4: >20dB, Unbalanced RCA Screw Input
	MP3: >20dB, Unbalanced Input
	EMC: >12dB, Unbalanced DG7.62 Screw 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: 80dB
THD	1KHz 0.5%, 1/3 Output Power Consumption
Muting Function	MIC 1 overrides other input signals
	0-30 dB adjustable
Crosstalk	≤50dB
Cooling	Forced air from front to rear, start built-in fan when radiator temperature reaches 45 degrees
Protection	Over heat, over load & short circuit
Power Supply	AC220V/50Hz
Power Consumption	260W	450W	700W	950W	1200W	1600W
Weight	12.1Kg	14.47Kg	17.32Kg	18.3Kg	20.4Kg	21.1Kg
Dimensions	525×525×170mm
Material	Black aluminum panel, SPCC cold rolled chassis