I missed that “the audio system” was hi-fi instead of communications audio.
wunder Walter Underwood [email protected] http://observer.wunderwood.org/ (my blog) > On Jan 10, 2020, at 3:35 PM, Fred Jensen <[email protected]> wrote: > > 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) >> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
