70 volt to line levels is possible. Devices exist for that. This scenario is a known one.
web search for ’70 volt to line level’.
Some even have signal detection and do not tun the unit on until they catch a signal from the 70 volt line.
Not an expensive device. $20 to $100. Eg, Pyle appears to make an inexpensive one.
When doing long cable runs, watch for grounding problems. Try to get the devices so they are on the same AC power line, so ground lift/differential, and thus hum issues are avoided or mitigated.
Try running a long speaker line at the 70 volt level, over to the signal reduction device you buy, and have the signal reduction device on the same AC power as the PA system that is trying to utilize said signal. To reiterate...a long 70volt speaker line, with the conversion device right next to the PA input, powered by the SAME AC power as the PA. This should avoid noise issues, like hum and whatnot.
Try a bit of light reading:
https://forums.prosoundweb.com/index.php?topic=130576.0
Importantly, your explanation is short and incomplete and does not explain exactly what it is you are looking for.
Therefore any answer will contain errors, from massive ones to simple ones. Just like your incomplete question.
The answer I have supplied will ONLY give you the signal that is coming in from the 70 volt speaker line, to be injected into a PA mixer or the like. As that is the question you asked an answer for.
web search for ’70 volt to line level’.
Some even have signal detection and do not tun the unit on until they catch a signal from the 70 volt line.
Not an expensive device. $20 to $100. Eg, Pyle appears to make an inexpensive one.
When doing long cable runs, watch for grounding problems. Try to get the devices so they are on the same AC power line, so ground lift/differential, and thus hum issues are avoided or mitigated.
Try running a long speaker line at the 70 volt level, over to the signal reduction device you buy, and have the signal reduction device on the same AC power as the PA system that is trying to utilize said signal. To reiterate...a long 70volt speaker line, with the conversion device right next to the PA input, powered by the SAME AC power as the PA. This should avoid noise issues, like hum and whatnot.
Try a bit of light reading:
https://forums.prosoundweb.com/index.php?topic=130576.0
Importantly, your explanation is short and incomplete and does not explain exactly what it is you are looking for.
Therefore any answer will contain errors, from massive ones to simple ones. Just like your incomplete question.
The answer I have supplied will ONLY give you the signal that is coming in from the 70 volt speaker line, to be injected into a PA mixer or the like. As that is the question you asked an answer for.