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Junior Varsity
Multiple amps suddenly stopped working in stereo mode but still work in bridged
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<blockquote data-quote="joey toribio" data-source="post: 216745" data-attributes="member: 15637"><p>The source was the right channel output of a balanced XLR signal from a mackie 4 channel mixing board travelling through an XLR cable into a dbx driverack pa2 as a mono input into the left channel input. The driverack pa2 was configured for a mono input which then output 3 pairs of stereo outputs to the 3 amps (tweeter, mid, sub).</p><p></p><p>It was the same source when it was working and the same source when it stopped working.</p><p></p><p>After it stopped working I tried trouble shooting by bypassing the drive rack and sending the same source directly into either of the amp channels, one amp at a time, in stereo mode testing only one output channel at a time using a known working speakon cable. Neither channel responded. That is when I checked all three modes and discovered bridged mode was sending a signal through the bridged output but using a 1+- cable.</p><p></p><p>When the malfunction randomly resolved the input stayed unchanged. When it reoccurred the input stayed unchanged and then when it resolved the second and final time, the input remained unchanged. I think we can conclude it isn't a source issue.</p></blockquote><p></p>
[QUOTE="joey toribio, post: 216745, member: 15637"] The source was the right channel output of a balanced XLR signal from a mackie 4 channel mixing board travelling through an XLR cable into a dbx driverack pa2 as a mono input into the left channel input. The driverack pa2 was configured for a mono input which then output 3 pairs of stereo outputs to the 3 amps (tweeter, mid, sub). It was the same source when it was working and the same source when it stopped working. After it stopped working I tried trouble shooting by bypassing the drive rack and sending the same source directly into either of the amp channels, one amp at a time, in stereo mode testing only one output channel at a time using a known working speakon cable. Neither channel responded. That is when I checked all three modes and discovered bridged mode was sending a signal through the bridged output but using a 1+- cable. When the malfunction randomly resolved the input stayed unchanged. When it reoccurred the input stayed unchanged and then when it resolved the second and final time, the input remained unchanged. I think we can conclude it isn't a source issue. [/QUOTE]
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Junior Varsity
Multiple amps suddenly stopped working in stereo mode but still work in bridged
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