Product overview
SELTECH provides expertise in designing and product supply on high end acoustic components. Our selected and trusted range perfectly matches safety and outdoor conditions for reliable intercoms.
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Watts Up? A simple formula for recalculating the SPL at different power and distance
12 June 2025
Have you ever stared at a loudspeaker datasheet, scratching your head while trying to figure out what the actual Sound Pressure Level (SPL)…