Miniature fiber optic microphone for indoor acoustic monitoring of signals with sound pressure levels (SPL) as high as 140 dB. Ideal where the microphone placement footprint is severely limited or where the microphone is a sub-component in another device or system.

The SOM(4) SPL system comprises of an advanced fiber optic microphone & single-channel electro-optic unit (EOU200), for digital-to-analog conversion of optical microphone output signals. The Single Channel EOU 200 with enhanced electronics box. It features two analog outputs (one with volume control for headphones, another with fixed gain for monitoring equipment); one pair of ST-style fiber optic connectors; two 3.5 mm sockets (one for analog output, another for headphones); green/red LED voltage indicator. DSP model provides up to 22 dB of real-time ambient noise removal (three levels: low, mid, high). Unit is powered either by internal battery or external DC power supply.

The SOM(4) SPL is supplied as standard with clear 1mm PVC fiber-optic cable. Where there is no benefit in the thin, transparent 1mm PVC cable, we recommend the more robust Kevlar reinforced black 3mm PVC cable.