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* Low Impedance
* High voltage (70V 100V) output
* 3 paging broadcast systems
* Automatic broadcast function for emergency
* Call broadcast function
* 4 chimes
* 4 sirens
* 4 groups of COMBO inputs with balanced PHONE input
* RCA jack and PHONE jack for input
* PRE-output
* Rear input
* MP3-500: MP3 player+USB / MMC / SD interface, with recording function and FM tuner.
* Input 1 with mute function
* Bass and treble control
* Master volume control for the unit, and individual volume control for each input
* 3H widened cabinet design
* Fan for heat dissipation
* Circuit protection: over-load protection, over current protection, over voltage protection and short-circuit protection
* LED output level indicator

MODELPA-1680TM
RMS / Power OutputRMS 680W / MAX 720W
Power InputAC:110-120V 50/60Hz; AC:220-240V 50/60Hz
Frequency Response50Hz~17KHz (±3dB)
Input SensitivityMIC 1: Bal: -51dBv / Unbal:-45dBv; Line: Bal:-10dBv / Unabl:-6dBv; AUX: Unbal 0dBv (Dip switch in off position)
Tone ControlBass:±10dBv (100Hz); Treble: ±10dBv (10KHz)
Distortion (T.H.D.)<0.5%
S/N RatioAUX?70dB; MIC.?65dB; Line?75dB; MAIN in ?85dB
ControlsInput 1 level control; Input 2 level control; Input 3 level control; Timbre control (Bass. Treble); Master control Siren switch; Chime switch; AC Switch
Output Impedance4O, 8O, 16O
Line Output70V, 100V
Siren FunctionYes
VU-Meter (LED)Yes
Telephone Paging Select FunctionYes
Input 1 PriorityYes
4-Tone ChimeYes
TunerFM
MP3 PlayerMP3-500
Dimension (WxDxH)482x440x150 mm (18.98"x17.32"x5.91")
Weight (Approx.)22.4 kg (49.38lb)