Two combo inputs CH A (1-way XLR and Mono jack 6.35) are available in SA312, which can be switched between line input and microphone input. The audio port CH B(Mono jack 6.35 or a RCA port) is for the other sound resources like MP3, CD player, etc. There is 1-way signal input port for wireless bluetooth in it and the volume is controlled by terminal. The gain of CH A/CH B signal input is controlled by independent knob and 1-way master volume control knob. The four different audio sources can be parallel output with one-way XLR after mixed internally, and then sent to different speakers for sound distribution. SA312 can be installed by steel wire. It can also be ground standing by coupling bar or three-feet stand. The pole mount is 35mm. Various accessories are offered for SA312 to meet different kinds of installs. Type  Active DSP-controlled full range loudspeakerFrequency Response(-6dB anechoic chamber)48Hz-20KHzMaximum CalculatedSPL/1M132dBLF DriverCustomized AUDIOCENTER ferrite driver, 2.5” voice coilHF DriverCustomized AUDIOCENTER ferrite driver, 1” exit, 1.75” voice coilHorizontal Coverage Angle(Symmetrical)60°Vertical Coverage Angle(Symmetrical)40°AMPLIFIER  Amplifier CircuitryClass DPower(Peak)2000WFrequency Response(1W 8Ω 2ch)20Hz-20KHz(±0.5dB)Intermodulation Distortion＜0.05%Total Harmonic Distortion＜0.05%ProtectionDC protection, short circuit protection, overheat protection, input overload protection, output overload protection, soft startup protection, overvoltage protection, undervoltage protectionCooling SystemCooling with fans, air convectionDSP  Processor96KHz signal sampling frequency,24bit precisionPresetsAdjustable via the knobs on the back panelCrossoverControlled by DSPOutput/Input Signal Input1×NEUTRIK® female XLR(Mono jack 6.35), 1×Mono jack 6.35,1×RCA,1×wireless BluetoothSignal Output 1×NEUTRIK® male XLRPower Input3 pin plugWorking Voltage100V-130V/60Hz or 220V-240V/50Hz   Cabinet  Cabinet MaterialCNC made of excellent woodCabinet ColorBlack and white available, can be customized according to the RAL codeDimension(W×H×D)356×608×372mmNet Weight20.0Kg

3 low-pass filters (80Hz, 100Hz, 120Hz) in SA3118 are available to choose according to different venues and music styles. There is also phase switch. All connectors and function buttons are on the back panel.

SA3118 subwoofer is with 1-way XLR for input and output. Signals can be sent to different speakers for sound distribution.