What does 70V speaker mean?
70-volt technology allows us to take multiple speakers and run one individual line at a fixed wattage and a constant voltage. All 70v speakers have a transformer built-in or mounted on the back. There will usually be a dial with a series of numbers on it, this is what is referred to as a “tap” or “tap setting”.
How many speakers can you have on a 70V AMP?
For example, with a 180 watt / 70 volt amplifier, you can install speakers that total close to 150 watts. It does not matter if it is 10 speakers that are 15 watts each or 25 speakers that are tapped at 5 watts each.
How many speakers can I put on a 70V system?
How many ohms is a 70V speaker?
50 ohms
These options are covered in detail later in this article. The signal line to the loudspeakers is high voltage, low current, and usually high impedance. Typical line values for a 100-watt amplifier are 70V, 1.41 amperes, and 50 ohms. How did the 70V line get its name?
Can you bridge a 70V AMP?
Yes, you can provided the amp is capable of outputing the required voltage, and your total load doesn’t exceed the amps minimum load rating for a given power output.
What is the difference between a 70V and a 6W amplifier?
One amp at 6 volts would also be 6W. The transformer in the 70V amplifier is designed such that the voltage from the amplifier is greatly increased in the secondary, usually 70.7 volts at maximum, but the current is greatly reduced.
What is a 70 V RMS system?
The 70.7 volt system gets its name from the RMS (think average) voltage of a pure tone (a sine wave) whose peak voltage is 100 V, which is the highest voltage that, by code, can be present on the line. So, feed a sine wave into the system and turn it up until the “70 V” amplifier clips, and you will read 70 Vrms on the line, which is 100 Vpeak.
What is the difference between 70V and 1KW?
Many of today’s larger power amplifiers (1 kW and higher) can produce higher voltages than 70 V, along with many amperes of current. These are potentially much more dangerous than the typical 70 V system.
What is a 70-volt distributed loudspeaker system?
So the 70-volt distributed speaker systems are mostly confined to low audio-quality applications such as background music or paging. Supermarkets, hotels, hospitals, airports are where you will find 70-volt distributed loudspeaker systems; anywhere you have more than a dozen speakers.