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JL Audio 500/1 No audio ch1 front left.
JL Audio 500/1 No audio ch1 front left.
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Old 23rd March 2020, 09:09 PM   #1
rhempz01 is offline rhempz01  United States
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Default JL Audio 500/1 No audio ch1 front left.

i can find why channel 1 has no audio. I pulled all transist ok rs in the 100 channel and tested them. i can see audio is going into and to q111- c121, and varies other components. yet no audio from that channel.unless bridged or the other ground is used.
No sin-wave is going down the COP6, COP4, COP5?
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Old 23rd March 2020, 09:17 PM   #2
Perry Babin is offline Perry Babin  United States
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That's not a 500.

What about C122 and C115?

If this channel is bridged to another channel and it produces clean audio, it is likely a dirty switch.
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Old 23rd March 2020, 09:31 PM   #3
jkrokenberger is offline jkrokenberger  United States
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Is that a 300/4?
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Old 23rd March 2020, 09:42 PM   #4
Crazylogix is offline Crazylogix  United States
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Looks more like a JD400/4, but an older version.
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Old 24th March 2020, 06:38 PM   #5
rhempz01 is offline rhempz01  United States
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M4300 class A/B
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Old 24th March 2020, 07:28 PM   #6
rhempz01 is offline rhempz01  United States
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if i ground at the out channel i can not see the 40hrz on the opamps, yet if i ground on any of the other 3 channels grounds its there.
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Old 24th March 2020, 09:05 PM   #7
Perry Babin is offline Perry Babin  United States
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Did you see #2?
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