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From: lewdslewrate on 20 Apr 2008 11:50
Confused signals. Set-up: Yamaha 01v, La-24 amplifier set to stereo,
2 core speaker cable/speakon connectors, non-descript Full range
Soundhouse speakers (450w, 8ohm, passive cross-over).
I send signal to Aux 1 on mixer, Ok. I mute aux 1 and send to Aux 2,
signal heard at both speakers. Sometimes, Aux I1 plays up and sound
appears at both speakers.
I swapped Aux1-2 for 3-4. Aux 3 ok, Aux 4 gives sound at both
speakers. If one speaker is disconnected when both are giving audio
from one aux send, BOTH speakers go silent. After pushing and pulling
cables etc, the problem clears for a while and all is as it should
be…………is there a rational explanation? Nothing is linked at the
mixer or amp intentionally.
From: Phil Allison on 20 Apr 2008 21:34

"lewdslewrate"

" If one speaker is disconnected when both are giving audio
from one aux send, BOTH speakers go silent. "


** Only one thing causes that - a fault in the power amplifier. The common
ground connection for the speakons is lose and intermittent INSIDE the
LA24 amp.

When it disconnects, your two speaker are wired in series ( and out of
phase) so disconnecting one of them stops all sound.



..... Phil


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