Hmmm ... I've always thought 70V systems were designed for PA usage
where BW is somewhat limited. Something about the transformers
saturating on the hi power in the extreme bass of quality
Hi-Fi/Stereo/HT systems? Not a professional however, easily could be wrong.
73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County
On 1/10/2020 11:08 AM, Walter Underwood wrote:
If it is a long run, you might use a 70.7 V system with Cat 5 cable. Put
transformers on each end to run higher voltage (lower current) on the wire and
use cheap, good twisted pair.
https://en.wikipedia.org/wiki/Constant-voltage_speaker_system
Another approach would be to use line-level over Cat 5, then put an audio
amplifier at the speaker. I use a dual 15 W amp that runs off of 9 to 18 V.
https://smile.amazon.com/gp/product/B00C4MT274/
Amazon shows the exact model at not available, but there are plenty of similar
alternatives.
https://smile.amazon.com/Amplifier-DROK-Channel-Digital-Speakers/dp/B07PYGCVWJ/
https://smile.amazon.com/dp/B075JDPTKM/
wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)
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