Crown Dc300 Driver Transistor

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Film-Tech Forum Operations Film Handlers Forum Crown Amplifier Problem how the Crown DC300 Common failure mode was the driver transistor s.

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crown dc300 driver transistor

Posted 04-04-2013 PM

   

  

   

It all depends on how your theater is set up and the arrangement of your amps but you can often shuffle amps around, temporarily, until you can get the bad one repaired.

Can you, for instance, unhook one of the amps for the subwoofers then put it in place of the bad one which powers the left, center or right channels. This is how I used to do it at Cinemark when amps went bad. They didn t have spares in the theaters. I had to call in to have another amp shipped in then send the bad one back for repair but it often took a week or more. We couldn t have a theater down for that long so I just swapped amps around until the replacement arrived.

If you do this, be sure that you are swapping in the same model of amp and be damned sure that the settings and switches are set right.

This was possible at Cinemark because there were ten or more theaters with similar or even identical setups. It wasn t a problem to take the subwoofer amp out of a small house and put it in place of the bad one in another house. If you are in a small theater, it might not be possible. If you can get a replacement in a short time, it might not even be worth it. You might just be better off to limp along until the replacement arrives. This assumes you order the repair/replacement right away and it arrives in a few days or a week.

Tony is right. I have seen many Crown amps fail. A few of them went up in smoke. Depending on budgets and politics at your theater, you should use this as a reason to push for replacement of those amps. At very minimum, get yourself on record as saying that those amps are on their last legs and should be replaced as soon as possible or else, as Tony says, those amps will fail and take the speakers with them.

You know that Murphy s Law predicts those amps WILL fail and, when they do, it WILL happen on a busy Friday night in a packed house showing the premiere of the most popular movie of the season.

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Title: DC-300 Instruction Manual Author: Crown Technical Publications Subject: DC-300 Amplifier Created Date: 7/12/2001 :51 AM.

Crown Amplifier Problem

History Files: The Crown DC300 Amplifier Leads The Solid-State Revolution. it was possible to deploy paralleled single-diffused power transistors in a circuit.

  • Crown product is free of defects in materials and workmanship, and we the driver transistors carry the bias current while the output transistors serve only.
  • History Files: The Crown DC300 Amplifier Leads The Solid-State Revolution. Aug. 15, 2013, a time when the nature of transistor failure mechanisms.