Easy and fast check of loudspeaker and sound systems without assembling effort. For testing a speaker box, you just need the Speaker Checker and a cable. The optimum tool for the sound engineer. Features: 1W output power (max.) sweepable sinus frequency 90Hz - 9kHz power supply with 9V block battery/rechargeable battery switchable balanced or unbalanced XLR output Speakon, XLR output connectors aluminum casing stainless steel clip   Specifications Output socket: XLR male 3-pole, Speakon 4-pole Output signal sine-wave, adjustable frequency range: 90Hz – 9kHz +/-5% min. Impedance at the output: 4ohms Max. output power: 1W into 4/8ohms Max. operating current: approx. 390mA into 4ohms/1W, approx. 280mA into 8ohms/1W, stand-by current when switched on: approx. 30mA Power supply:  9V block alkaline battery or 8.4V rechargeable battery NiMH
