70 Volt Speaker System Wiring Diagram

To all speakers in the system so installers can check the system installation.

70 volt speaker system wiring diagram. Supermarkets hotels hospitals airports are where you will find 70 volt distributed loudspeaker systems. There is an easier way however it only really works well for systems that do not use speakers that need much power to appear at individual speakers. Central amplified systems pages 64 67 self amplified systems pages 68 69 power lost. Find that value at the bottom of the chart.

70 volt speaker wiring limitations chart instructions. Speaker layout wiring methods and phasing are the same for either technology and are covered on pages 70 76. A constant voltage or high impedance audio distribution system is commonly used to overcome these and a number of other possible problems. These systems are also referred to by their nominal voltage with 70 volt and 25 volt systems being the most common references.

So the 70 volt distributed speaker systems are mostly confined to low audio quality applications such as background music or paging. In the us 70 7v is the highest voltage speaker system where class 2 wiring can be used without conduit. 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. Determine the combined output in watts for all speakers on a line.

Follow the nearest vertical line up to its intersection with a diagonal wire size line. It shows the components of the circuit as simplified shapes and the aptitude and signal contacts in the middle of the devices. Anywhere you have more than a dozen speakers. 70 volt sound systems when wiring up a large sound system its often very difficult to calculate the proper impedances of all of the speakers that are being used.

Follow the horizontal line nearest the intersection to the left. The job of a crossover also called a passive crossover because it use basic capacitors and inductors rather than electronics is to restrict the music production each speaker tries to produce. Hello i m new at this forum i recently took over a 70 volt installation i have been troubleshooting without any luck a section of speakers that are generating some weird noise almost static noise out of one channel of the amp on all sources the system has three sources a mixer and amplifier out of the amp i have volume controls at 35w and at the speaker taps is set to 10w the amp is.