Question about Crown CE1000 2-Channel Amplifier

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Fault lights hi im a tech in south texas and some how i managed to get 3 ce 1000's in all at the same time, now ive been testing them for few days and they all work but channel 2 does not function as a bridged channel, but worksfine in stereo. they all have equal volume and no static or intermitten problems, non of the fans are coming on but i assumed its cause the cover is off and its pretty cold in my shop. crown hasnt given me a straight answer and alays comes back to the relays c-10335-5. and to make matters worse 2 of em are 98's and one is an 05. but they use different relays (05 has spades on top, 98s dont) im not an idiot (t least i hope not) and have a great amount of fixes and time under my belt.

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  • bhrepair Nov 06, 2008

    ACTUALLY I FIGURED IT OUT ON MY OWN AND I AM RIGHT THOUGH I SHOULD OF KNOWN BETTER TO PUT IT ON HERE.I KNEW THAT ABOUT THE FANS AS WELL AND STATED THAT. CHANNEL 2 WILL NEVER WORK AS AN INPUT IN BRIDGED MODE ITS ONLY DESIGNED TO WORK LIKE THAT WITH 1. CAN U TELL ME WHY THE CE2000 I HVE RESETS AS IN POWER SHUTS OFF AND THE FAULTS FLASH WHEN U JUST TURN THE SWITCH FROM BRIDGED TO STEREO? CROWN DIDN'T KNOW.

  • bhrepair Nov 07, 2008

    thats the first ive heard of that and seeing as how the tech at crown didnt seem to care about it ill take it as tht they have run the circuts how youve described. which the 2+ and 2- just get changed to a diff position.

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I'm not sure what you mean when you say the channel 2 does not work in bridge mode. Bridge mode effectively turns the amp into a mono amp, thus there is no channel 1 or 2. The fans will only turn on when the heat is high enough, so that is not a problem. Please describe what you perceive as the problem with these and I'll try to help.

Thanks,
Dan

Posted on Nov 05, 2008

  • ABRsvcs Nov 06, 2008

    Any change from stereo to bridge mode should only be done with the amp in the OFF position. Because the switch changes the circuit configuration and offsets, any residual voltage could cause damage. Fortunately for you, the protection circuit kicks in to prevent it. I would not rely on that forever though. In general practice, only change modes in the power down condition. Also, these units usually have draw-down resistors to drain the power supply on power off. Give the unit a few minutes between mode changes as well.



    Dan

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