100v Speaker Cable Size

The best way to calculate cable suitability is to obtain the full specification for the cable from your supplier including the cable conductor size and specific copper resistance.

100v speaker cable size.

In the united states if a 100v speaker system is installed in a commercial building class 1 speaker wiring must used and it must be installed in conduit. Another unique feature is that the transformer on each speaker has a number of taps on the. In fact within a building the gauge of the wire almost doesn t matter at all. 100v line cable size blue room technical forum.

As the speakers are tapped along the line you are only sending 180w for the first section of the line betwixt amp and first horn. Blue room technical forum. Additional cost per speaker due to fitment of transformer line monitoring capacitor and regulatory requirements such as speaker transformer enclosures and cable restraint plates. That makes the sound system installation very expensive so for all practical purposes 100v speaker systems.

Most 100v line speakers do not perform brilliantly at low frequencies however for general announcing this is not generally a concern. The cost of the wire in such an installation becomes incidental. You will then be armed with all the required information to make the right decision for cabling your 100v line speaker system. A 200 feet cable awg 20 has a resistance of about 4 ohms a 25 feet cable awg 12 has a resistance of about 0 08 ohms.

The voltage is constant only in the sense that at full power the voltage in the. For relatively short runs less than 50 feet to 8 ohm speakers 16 gauge wire will usually do just fine. Thick wire 12 or 14 gauge is recommended for long wire runs high power applications and low impedance speakers 4 or 6 ohms. Calculation of the cable size for a given power and cable length for a 70v 100v system.

Note that 24 awg wire like some bell wire or spare category 5 is only 1 db down at 900 feet. Constant voltage speaker systems refer to networks of loudspeakers which are connected to an audio amplifier using step up and step down transformers to simplify impedance calculations and to minimize power loss over the speaker cables they are more appropriately called high voltage audio distribution systems. Standard low impedance 8 or 16 ohm speakers cannot be used with 100v line systems unless you buy a 100v line transformers.