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LEAVE THE IMPEDANCE SETTING AT 8 OHMS :T

You can read the entire article on this subject if you like, I reco watching the 5 minute video concerning this exact subject with Gene and Hugo.............the video is on the first page of the article with the skeleton.

http://www.audioholics.com/audio-amplifier/impedance-selector-switch-1

I hope this helps, it should answer all your questions, it did for me when I changed speakers........

Enjoy and good luck

GO STEELERS.............

Cheers Jeffrey
Hi Jeffrey,
Thanks for the information, I had actually seen the video as well a a couple of articles on the subject and that is what started me on this mission and I fully understood where they were coming from. As a retired engineer in this and similar fields, what concerned me most was the fairly significant increase in temperature when set to 8ohm even though running at moderate volume. Both the 4520 and an older Pioneer AVR both run fairly cool normally on the very same 4 ohm speakers.

I am going to dig further but what I am keen to find out is what Denon actually do in this particular model to cope with 6 and 4 ohm speakers.

I installed recently a Denon AVR 2200W for friends and that actually appears to run quite hot normally so that is another mission to measure find out what temperature it is actually functioning at

Thanks again

Rick
 

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Hi Jeffrey,
Thanks for the information, I had actually seen the video as well a a couple of articles on the subject and that is what started me on this mission and I fully understood where they were coming from. As a retired engineer in this and similar fields, what concerned me most was the fairly significant increase in temperature when set to 8ohm even though running at moderate volume. Both the 4520 and an older Pioneer AVR both run fairly cool normally on the very same 4 ohm speakers.

I am going to dig further but what I am keen to find out is what Denon actually do in this particular model to cope with 6 and 4 ohm speakers.

I installed recently a Denon AVR 2200W for friends and that actually appears to run quite hot normally so that is another mission to measure find out what temperature it is actually functioning at

Thanks again

Rick
Rick, you're very welcome, I'm not very familiar with Denon receivers especially the 4520, I have a Onkyo 1010 that runs warm to hot no matter what speakers I use, I have 200 mm fans on top to draw the heat from the unit and it runs really cool. I have used 6 & 4 Ohm speakers with this model, the impedance selector switch offers 6 & 4 only, I use the 6 Ohm only even with 4 Ohm speakers with lots of head room left even at moderate to high levels.

I would definitely pursue (4520) the significant increase in heat produced running in 8 Ohm mode with 4 Ohm speakers. How does it sound in 8 Ohm mode when running 4 Ohm speakers, did you notice any difference in SQ, distortion or lack of authority with dynamics, rhythm and pace? Seems the heat is your main concern.

What are other folks saying about this that own the 4520, should get some feedback from other owners if this heat issue is a problem. Personally I believe this is normal, but like I said I'm not at all familiar with the 4520.

Regards, Jeffrey
 

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Rick, you're very welcome, I'm not very familiar with Denon receivers especially the 4520, I have a Onkyo 1010 that runs warm to hot no matter what speakers I use, I have 200 mm fans on top to draw the heat from the unit and it runs really cool. I have used 6 & 4 Ohm speakers with this model, the impedance selector switch offers 6 & 4 only, I use the 6 Ohm only even with 4 Ohm speakers with lots of head room left even at moderate to high levels.

I would definitely pursue (4520) the significant increase in heat produced running in 8 Ohm mode with 4 Ohm speakers. How does it sound in 8 Ohm mode when running 4 Ohm speakers, did you notice any difference in SQ, distortion or lack of authority with dynamics, rhythm and pace? Seems the heat is your main concern.

What are other folks saying about this that own the 4520, should get some feedback from other owners if this heat issue is a problem. Personally I believe this is normal, but like I said I'm not at all familiar with the 4520.

Regards, Jeffrey
Hi Jeffrey,
Yes I was aware the Onkyo's tend to run a bit warm.
With regard to the 4520 (similar in most respects to the current 7200 but no atmos) tis a bit of a beast with bags of power on tap. With the impedance set to 8ohm on four ohm speakers there is no discernible distortion or lack of dynamics sounds great it just runs warmer in a well ventilated rack (open all sides). Maybe in that configuration 40deg C (104deg F) is quite normal it is just that most of my AVR's over recent years two Pioneers (both relatively upper end ) and the Denon 4520 have run pretty cool under 30deg C (86deg F) both set to 6ohm or 4ohm respectively. The Pio on the 4ohm speakers is in my den and I am currently listening to it is sitting at 28deg C just now albeit not playing loudly. In addition I have had 4ohm speakers for so long (maggies preceded the current Maudant Shorts now on the Pio) that I had almost forgotten what an 8ohm speaker was:unbelievable:

Having nice new shiny 8ohm speakers as the main front pair and the rest 4ohm apart from the centre I thought I would try this as apart from the centre the rest of the surround speakers don't generally work very hard at all. Maybe I am making mountains out of molehills and 104F is quite acceptable but then again that is why I thought I would post this to see what other owners experience is and their thoughts.

All the best

Rick
 

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Hi Jeffrey,
Yes I was aware the Onkyo's tend to run a bit warm.
With regard to the 4520 (similar in most respects to the current 7200 but no atmos) tis a bit of a beast with bags of power on tap. With the impedance set to 8ohm on four ohm speakers there is no discernible distortion or lack of dynamics sounds great it just runs warmer in a well ventilated rack (open all sides). Maybe in that configuration 40deg C (104deg F) is quite normal it is just that most of my AVR's over recent years two Pioneers (both relatively upper end ) and the Denon 4520 have run pretty cool under 30deg C (86deg F) both set to 6ohm or 4ohm respectively. The Pio on the 4ohm speakers is in my den and I am currently listening to it is sitting at 28deg C just now albeit not playing loudly. In addition I have had 4ohm speakers for so long (maggies preceded the current Maudant Shorts now on the Pio) that I had almost forgotten what an 8ohm speaker was:unbelievable:

Having nice new shiny 8ohm speakers as the main front pair and the rest 4ohm apart from the centre I thought I would try this as apart from the centre the rest of the surround speakers don't generally work very hard at all. Maybe I am making mountains out of molehills and 104F is quite acceptable but then again that is why I thought I would post this to see what other owners experience is and their thoughts.

All the best

Rick
Rick I think you answered your own question: tis a bit of a beast with bags of power on tap. The 4520 is known for driving difficult loads, I think the heat issue is a moot point and perfectly normal, just my opinion. My Onkyo 1010 is also a beast with plenty of power to spare, it gets warm at idle, solution is 2 200mm fans and problem solved. Keep the molehill mentality and I think you will be just fine. As long as your rack is open on all sides or has plenty of ventilation space you'll be just fine, relax and enjoy you setup my friend, if it sounds good, don't try to fix or break it.......:T

Cheers Jeffrey
 

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Rick I think you answered your own question: tis a bit of a beast with bags of power on tap. The 4520 is known for driving difficult loads, I think the heat issue is a moot point and perfectly normal, just my opinion. My Onkyo 1010 is also a beast with plenty of power to spare, it gets warm at idle, solution is 2 200mm fans and problem solved. Keep the molehill mentality and I think you will be just fine. As long as your rack is open on all sides or has plenty of ventilation space you'll be just fine, relax and enjoy you setup my friend, if it sounds good, don't try to fix or break it.......:T

Cheers Jeffrey
Hi Jeffrey
Yes I think you are right, I generally tell others 'if it ain't broke don't mend it :nono:' time to follow my own advice and yours.

Thanks and best wishes

Rick
 

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I have this AVR and it runs quite warm even into my very efficient speakers, but it never breaks, shuts off or does any other maladies other than click when I turn the volume up and down and I have no clue why. This is a very large receiver.
 

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I have this AVR and it runs quite warm even into my very efficient speakers, but it never breaks, shuts off or does any other maladies other than click when I turn the volume up and down and I have no clue why. This is a very large receiver.
Like I said my Onkyo 1010 is also very large @ 51 pounds as well, it's warm at idle kind of like my big Panny plasma, I had to put 4 200mm fans on the rear and it stays nice and cool. That malady you speak of with the clicking volume control is really unusual and never encountered it. Like you said other than that it's just fine.

Hey Rick now you have confirmation from Savjac that the 4520 runs warm with even easy loads so just leave well enough alone and enjoy.

Jeffrey
 

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I have this AVR and it runs quite warm even into my very efficient speakers, but it never breaks, shuts off or does any other maladies other than click when I turn the volume up and down and I have no clue why. This is a very large receiver.
Hi Savjac, Thanks for your input very useful information, my two new front speakers are also more efficient than average. The click you mention when you turn the volume up and down is not something I have experienced. From memory I only get a click on power up or muting. Like you I have experienced no problems but was just wondering about the apparent increase in temperature under certain impedance settings, but as you have confirmed it can run quite warm, so thanks again for your response.


Like I said my Onkyo 1010 is also very large @ 51 pounds as well, it's warm at idle kind of like my big Panny plasma, I had to put 4 200mm fans on the rear and it stays nice and cool. That malady you speak of with the clicking volume control is really unusual and never encountered it. Like you said other than that it's just fine.

Hey Rick now you have confirmation from Savjac that the 4520 runs warm with even easy loads so just leave well enough alone and enjoy.

Jeffrey
Hi Jeffrey, thanks again

Rick
 

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Hi Savjac, Thanks for your input very useful information, my two new front speakers are also more efficient than average. The click you mention when you turn the volume up and down is not something I have experienced. From memory I only get a click on power up or muting. Like you I have experienced no problems but was just wondering about the apparent increase in temperature under certain impedance settings, but as you have confirmed it can run quite warm, so thanks again for your response.




Hi Jeffrey, thanks again

Rick
You're more than welcome Rick, I enjoyed the discussion, that's what this forum is all about.

Best Regards, Jeffrey
 

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Hi Savjac, Thanks for your input very useful information, my two new front speakers are also more efficient than average. The click you mention when you turn the volume up and down is not something I have experienced. From memory I only get a click on power up or muting. Like you I have experienced no problems but was just wondering about the apparent increase in temperature under certain impedance settings, but as you have confirmed it can run quite warm, so thanks again for your response.

Rick
Thank You for your response. The clicking started after I sent the unit in for a dusting and cleaning, it came back working fine except for the clicking. It took me almost 3 months to get it back from the dusting and cleaning so I do not wish to send it back for a check up, so I will live with the little noises.

Be Well
 

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Thank You for your response. The clicking started after I sent the unit in for a dusting and cleaning, it came back working fine except for the clicking. It took me almost 3 months to get it back from the dusting and cleaning so I do not wish to send it back for a check up, so I will live with the little noises.

Be Well
Like I said my Onkyo 1010 is also very large @ 51 pounds as well, it's warm at idle kind of like my big Panny plasma, I had to put 4 200mm fans on the rear and it stays nice and cool. That malady you speak of with the clicking volume control is really unusual and never encountered it. Like you said other than that it's just fine.

Hey Rick now you have confirmation from Savjac that the 4520 runs warm with even easy loads so just leave well enough alone and enjoy.

Jeffrey
Hi guys
Just thought I would update on progress. Been running the 4520 now since our discussion on 8ohm and everything is fine. I had a thought about my 42deg C and being an :eek:lddude: that seemed warm till I looked at it in old money :surprise: that is only 107.6 deg F barely a warm day in some places that is seriously not running hot, maybe I was having a brainstorm or something.

Meantime now may the fun begin I have finally gotten round to getting me a miniDSP UMIK1 microphone, after all the time of messing about with an unknown mic and cheap SPL meter, my first and only run, so far, with this and REW was a quick speaker sweep. Eureka at last results, and pleasing ones too, that looked like what I expected to see from the speaker spec and could feel comfortable and confident about. OK this item is a bit more expensive here than in the US but if the above is anything to go by really worth it. Right, away now to do an exploratory exploration of the Den's sonic anomalies before I start the main system.

All the best

Rick
 

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Noticed today the latest update was ready to install.
Firmware 3525-8853-5460
 

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Nice one thanks for the heads up, didn't think we were going to get any more. Will go and check and see if it is applicable to the UK as well.
Have not been on the forum for a while, too many things been going on. I have peeked in occasionally but had no time to post comments. In fact so busy have resigned from a couple but going to stay here, like the folks and like the forum. Just hope things are going to ease up. Family weddings, parts of the family moving, grandson and grandson-in-law (think that's right) changing jobs, one to the army and one to the navy, replacing cars, property maintenance etc. it never seems to stop. Hopefully though will have time when the major wedding is done to come in and catch up.
 
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