70 Volt Audio System Wiring Diagram

How to wire a basic 70 volt system on episode 5 of pro acoustics tech talk duration.

70 volt audio system wiring diagram. Anywhere you have more than a dozen speakers. Find that value at the bottom of the chart. 70 volt speaker wiring limitations chart instructions. Often used when wiring outdoor pa systems using all weather horns.

Image of the rear of a home stereo receiver amplifier. Pro audio systems may have 100 to 500 watts per individual. Often used when wiring pa systems in buildings using hundreds of speakers. Configuration options for 70 volt 8 ohm and hybrid audio systems duration.

70 volt systems are easier to design than 8 ohm speaker systems. Some disadvantages of 70 volt systems. Also attempting to wire two 8 ohm speakers in parallel to an 8 ohm stereo would have the same effect. The impedance does not have to be matched throughout the 70 volt system as it would on an 8 ohm based system.

Speakers that connect with a simple 2 wire installation because the audio power is supplied from the central ized amplifier. Follow the nearest vertical line up to its intersection with a diagonal wire size line. Supermarkets hotels hospitals airports are where you will find 70 volt distributed loudspeaker systems. Determine the combined output in watts for all speakers on a line.

Sporting events sales areas car lots etc. So the 70 volt distributed speaker systems are mostly confined to low audio quality applications such as background music or paging. Constant voltage 70 volt audio systems for beginners high impedance loudspeaker distribution audio distribution systems especially those commonly used in department stores warehouses around race tracks etc require that many loudspeakers be driven from a single audio amplifier over long runs of speaker wire. 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.

Depending on the telephone system and amplifier an interface device may not be needed the aim of a paging system is to deliver. The recommended speaker impedance ratings are usually listed above the speaker wire posts. Low power typically 10 watts or less per speaker. An interface devicethat connects the paging system to the telephone system.