Denon going into Protect Mode - Ohm Related? - AVS Forum
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post #1 of 13 Old 07-25-2012, 11:24 AM - Thread Starter
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I have a Denon 3312, which when powering my Cambridge Tower II, has been powering off via Protect Mode. I discovered the CSW T2 speakers are rated to 6 ohm, and the receiver seems to work at 8ohm. Could this be the reason why the speakers are causing the Denon to go into Protect and power off? I'm running 14 guage wiring, so I don't think that's a cause.

IF this is a suspected problem in the Ohms 'mismatch', is there a way to pair these two better?
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post #2 of 13 Old 07-25-2012, 11:33 AM
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The 3312 is designed to work with 6-ohm speakers, so unless you are raising the volume above "reference" level (ie. 0db), check for a loose speaker wire on the back panel from one post touching another post as the possible culprit.

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post #3 of 13 Old 07-25-2012, 11:43 AM
 
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What kind of ventilation airflow do you have going? Is there ample ventilation? Denon wants twelve inches of space on all sides of the receiver.
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post #4 of 13 Old 07-25-2012, 12:08 PM - Thread Starter
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Receiver pops off only above, maybe -30. Not too high at all. I'll double check the wires, but think they're good. Amp has more than 12 inches on all sides, nothing on top. Since it only turns off after going to slightly high volume, and nothing that's Loud, really at all, It SEEMS to be a power to speaker ratio of some sort. Again, I'll double check the wiring, but I'm suspicious that's not the problem.
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post #5 of 13 Old 07-25-2012, 12:13 PM
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That volume level shouldn't normally cause the AVR to shut down in protection mode.

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post #6 of 13 Old 07-25-2012, 12:16 PM
 
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A defective high/low thermal protection switch could cause the problem. confused.gif

The higher you crank the volume, the harder the transformer works and the more heat is produced. Just a possibility.
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post #7 of 13 Old 07-25-2012, 12:45 PM
 
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I'm wondering if the speakers are operating to spec. How old are they, could there be an issue with a somewhat faulty crossover network? The only other thing I can think of besides a faulty Denon would be a loose speaker wire strand.
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post #8 of 13 Old 07-25-2012, 01:06 PM
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Also...
Check the wiring @ the back of each loudspeaker..
This end is just a critical as the AVR rear panel connections..
All it takes is 1 little wire strand shorting across...


Just my $0.02.. wink.gif
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post #9 of 13 Old 08-17-2012, 10:24 AM - Thread Starter
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Wrapping up this thread, I recently moved the system to my new house and paid VERY special attention to wire everything very tightly. No loose strands, lots of breathing room for the Amp, new thick speaker wire, etc. Everythign works perfectly. Great sound and NO Protect mode. Thanks all!
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post #10 of 13 Old 08-17-2012, 01:29 PM
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Quote:
Originally Posted by Cooleyone View Post

Wrapping up this thread, I recently moved the system to my new house and paid VERY special attention to wire everything very tightly. No loose strands, lots of breathing room for the Amp, new thick speaker wire, etc. Everythign works perfectly. Great sound and NO Protect mode. Thanks all!

So lets blame the old house its the only parameter we changed smile.gif.

Daniel.

for men to evolve we have to upgrade
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post #11 of 13 Old 08-17-2012, 03:06 PM - Thread Starter
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Lol Danielo. Must certianly be the house, since my attention to detail is allllways perfect. rolleyes.gif
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post #12 of 13 Old 08-17-2012, 07:59 PM
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Another reason banana and spade plugs are very important with no possibility of shorting unless you touch the ends together.
Can't count on my hands and toes the amount of times I had to diagnose a protection mode problem and its been a small strand of speaker wire touching the plate or opposite post.
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post #13 of 13 Old 08-18-2012, 03:26 PM
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Quote:
Originally Posted by oztech View Post

Another reason banana and spade plugs are very important with no possibility of shorting unless you touch the ends together.
Can't count on my hands and toes the amount of times I had to diagnose a protection mode problem and its been a small strand of speaker wire touching the plate or opposite post.

Sometimes i don't understand why smart ideas are not copied by others (patents?). I love how my tannoys use a layout of the connectors to make shorting them out harder (and it also looks nice).

Tannoy-Dimension-bi-wiring-terminal-panel.gif

Daniel.

PS: the 5e connector is for grounding.

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