Denon shutdown

[jpaul]

Watched the movie Fifth Element. When the Blue lady sings my system
shut off. 3 times. The sound was set fairly high. when turn down it didn't seem to have a problem. This sounds like power feedback from the speakers.
But, these speakers is suppose to handle high sound.
What could be the problem? do I need to purchase another equipment for this?
Thanks

 

[Seth=L]

Check your cables. Try swapping cables around. I had some speaker wire connected to a Yamaha receiver with no visible shorts one time and as soon as I swapped out those cables the problem dissapeared. It seems strange that something like a cable could fail, but all it takes is one small strand of copper to mess the whole thing up.

 

[Phil Taylor]

Yep as Seth said - check your speaker wires for "whisker shorts" where a small strand of the wiring is touching either the opposite wire or terminal. When present whisker shorts will usually allow playing at lower volume but when you turn it up the amp's protection circuitry will shut it off.

 

[Seth=L]

Yep as Seth said - check your speaker wires for "whisker shorts" where a small strand of the wiring is touching either the opposite wire or terminal. When present whisker shorts will usually allow playing at lower volume but when you turn it up the amp's protection circuitry will shut it off.

Sometimes it can be defects in the wire itself (it's very uncommon, but some cheap stuff has done it before to me.).

 

[jamie2112]

Sometimes it can be defects in the wire itself (it's very uncommon, but some cheap stuff has done it before to me.).

Could be.............

 

[Seth=L]

Could be.............

So what's the new picture about? (avatar)

 

[markw]

Watched the movie Fifth Element. When the Blue lady sings my system shut off. 3 times. The sound was set fairly high. when turn down it didn't seem to have a problem.

Methinks the amp is running out of power. This can happen, particularly when all channels are driven simultaneously.

Remember, an apparant doubling of loudness requires TEN times the power.

 

[Phil Taylor]

Remember, an apparant doubling of loudness requires TEN times the power.

I've never heard that but do know that an increase in perceived volume level takes a doubling of amplified power. At that rate ten times the power would run out just past the third and fourth perceived level change

 

[markw]

I've never heard that but do know that an increase in perceived volume level takes a doubling of amplified power. At that rate ten times the power would run out just past the third and fourth perceived level change

Yep, you got it. It's amazing what you can learn here.

You're confusing decibels, power and perceived loudness. They have, at best, a dubious relationship.

Hint: our hearing doesn't handle loudness in a linear fashion. A doubling of power to the speaker results in a 3 db increase in perceived loudness, which is barely noticible. For a doubling of power, you need about 10 decibles and, if you do the math, the watts required are quite bit more.

http://www.audioholics.com/education/frequently-asked-questions/relationship-between-watts-and-dbs

 

[Kitsum]

All 3 of my amps shut down during the peaks of Stravinsky Firebird at 11-12 o'clock volume driving my 3-4 ohm Infinity Sigmas.
The amps are rated at 100, 120 and 140 WRMS per channel. They are TOTL integrated amps. Will a 200W power amp be any better?

 

[jpaul]

Thanks for the info

Thanks for the info. I'm going to test it tonight, I'll check the wires first and see if that will fix the problem. I'll post the results tomorrow.
If it doesn't fix it then mabey I should consider buying a amp to add the power needed as long as my speakers can handle it.

 

[Perp]

your speakers could be bottoming out, and if it happens enough they could be dropping the impedance when it happens, and causing the amp to go into protection.. just a thought..

 

[Votrax]

It's highly unlikely the speaker wire is broken unless there is some unseen force that is flexing the cable several thousand times until is breaks. I would say you're probably clipping the amplifier in your receiver causing it to shut down.