Monitoring amplifier AV11i / AV14
The 1-channel monitor amplifier AV11i and iAV14 are handheld, battery-driven instruments, which has been constructed mainly to monitor acoustic and vibration signals with headphones.
AV11i offers you many possibilities to locate disturbance sources. AV11i offers you many possibilities to locate disturbance sources. It has an IEPE measuring input for microphone or piezoelectric accelerometer. The measuring signal can be weighted with the switchable octave filter (9 frequencies) or third octave filter (25 frequencies). So you can detect the exact frequencies of the disturbance source.
The AV14 has an input to which an MI10 microphone or a piezoelectric accelerometer can be connected.
At the output socket of the two amplifier variants you get a voltage proportional to the acceleration or sound pressure independent of the amplification of the headphone amplifier. So the instrument can be used as a front end for analyzers.
The AV11i and AV14 are designed for mobile use. The power is supplied by batteries. Thanks to the robust aluminum housing, both amplifiers can also be used in a robust environment.