Niles Spk-1 switch both positive and negative, the 12v trigger is set and forget.
http://ww.nilesaudio.com/product/speaker-level-b-switcher-12v-triggered-FG00240
http://ww.nilesaudio.com/product/speaker-level-b-switcher-12v-triggered-FG00240
Bryston 2WSB switch box to choose amp that drives speakers
Niles Spk-1 switch both positive and negative, the 12v trigger is set and forget. http://ww.nilesaudio.com/product/speaker-level-b-switcher-12v-triggered-FG00240 |
I can confirm that the Niles SPK-1 switching both +/- terminals by using two 12V DPDT relay rated 8A @ 250V internally. The 12v trigger can simply use a 12V DC adapter. https://www.amazon.com/Gxilee-100-240V-Converter-Household-Electronics/dp/B01FXF6AEQ |