Safety Listings are specific standards that products are required to meet for given applications and uses. These include everything in a building from the electrical system to the plumbing as well as the loudspeakers, wiring, electronics, and racks used to support the paging, BGM, or emergency communication systems.
Few systems are as misunderstood as "70V" systems. The most important trait of these systems is the use of transformers that are used to "step down" the signal voltage before applying it to the loudspeaker. This is necessary because the signal voltage is "stepped up" at the amplifier. Myths regarding these systems abound. Some are rooted in fact, others, not so much. These are some common misconceptions about 70V loudspeaker systems.
Have you ever struggled to hold a 50lb amplifier with one arm while you try to hold a mounting screw on the end of your screwdriver, and line up the holes on the rack rails with the mounting ears of the amplifier all while you hope you don't strip the threads? Or better yet, have you ever dropped a heavy rack component onto other components in the rack when you were trying to take it out? WHY?
