3806 Pre Outs Question

[avliner]

A quick (an somewhat weird) question:

if you have your L/R fronts powered by an outboard amp (using the pre outs), would the respective L/R binding posts be active or not?
In other words, can both be used at same time (on a different set of speakers)?

Thanks in advance.

 

[mike c]

yes, they'd be active AND can be used on a different set of speakers

 

[Seth=L]

I concur, they are active.

There are very few receivers that allow you to shut the internal amplifiers off, and the ones that do would be expensive. There are some receivers like NAD that have preamp to amplifier bridges that can be removed, effectively dissabling the use of the internal amplifier if a seperate amp is added, but to my knowledge the amplifier stays on regardless if it has any source.

 

[darien87]

I concur, they are active.

There are very few receivers that allow you to shut the internal amplifiers off, and the ones that do would be expensive. There are some receivers like NAD that have preamp to amplifier bridges that can be removed, effectively dissabling the use of the internal amplifier if a seperate amp is added, but to my knowledge the amplifier stays on regardless if it has any source.

Not to hijack this guy's thread, but if the amps stay active, then why does everyone say that a separate amp will ease the load on your receiver? Is the amp still on, but only drawing minimal power because it isn't actually driving a speaker?

 

[avliner]

Thanks guys,

that's what I tought.

Matter of fact, I have a friend that just got a brand new 3806 and he has also some vintage Pioneer & Sansui amps and he just asked whether it would be possible to do that though (I see no reason for doing that, anyway..).

BTW Mike, how's your HT room going on?

 

[Seth=L]

Not to hijack this guy's thread, but if the amps stay active, then why does everyone say that a separate amp will ease the load on your receiver? Is the amp still on, but only drawing minimal power because it isn't actually driving a speaker?

I think you answered your own question.

 

[darien87]

I think you answered your own question.

See? I'm a prodigy and didn't even know it.

 

[mike c]

BTW Mike, how's your HT room going on?

the ugly room or the one I'm posting at the "member systems"?

i'm just waiting for some paint on the ugly room, since I have no idea with the required distance on projection screens using SD source, I made a board with wheels where I will attach my screen. so I can do a 1:1 ratio of diagonal size to distance ratio if i buy my HD source soon, or I can do the standard 1.something:1 ratio for SD.

 

[MDS]

Not to hijack this guy's thread, but if the amps stay active, then why does everyone say that a separate amp will ease the load on your receiver? Is the amp still on, but only drawing minimal power because it isn't actually driving a speaker?

'Active' really only means 'you could use them if you wanted to'. If you don't have any speakers connected then there is no load for the front channels and using an external amp would ease the total load on the receiver because there is no current draw from the front channels.

 

[avliner]

Hey Mike AND Seth,

initially I must apologize for "not asking" about Seth's new born baby (or beast) JVC AVR ( the lost treasure, perhaps??...).

I'm pretty darn sure that Seth's enjoying his new toy quite a lot!
Please correct me if I'm wrong...

Mike, sure I'm talking about your "under construction" room...
How long will it takes to get everything ready? I wanna se some nice envying pictures, though...

IOH, what a clever idea to have a movable screen! It's somenthing to think about for future upgrades, indeed. I might be going for a PJ somewhere in near future, so I'll keep that in my files, just in case.

BTW, considering that you're the only one soul that I know who owns a Pioneer DVD (696 DV) so far, just give me some more time to revert with some interesting comments related to this subject...

Cheers!

 

[zildjian]

Just a tid bit of info to expand on an earlier point, even if no speakers are connected to the Denon receiver and external amps are used from the Denon's pre-outs for all channels, yes there is no load on the Denon's internal amps, but the Denon chasis still gets pretty warm when playing the system at higher volume. This is how I use my Denon 3806 and it gets pretty warm, much warmer than just idle, without a single speaker connected to it. Just interesting I thought.

 

[Duffinator]

Just a tid bit of info to expand on an earlier point, even if no speakers are connected to the Denon receiver and external amps are used from the Denon's pre-outs for all channels, yes there is no load on the Denon's internal amps, but the Denon chasis still gets pretty warm when playing the system at higher volume. This is how I use my Denon 3806 and it gets pretty warm, much warmer than just idle, without a single speaker connected to it. Just interesting I thought.

Yep. When I added an external amp I thought my 3805 would run cooler but it doesn't. There will be more power available for peaks on the other channels so I guess that's a plus. But thanks to Mike C I now have fans on my AVR and amp so they both run nice and cool.

 

[mike c]

good to hear duffinator

 

[avliner]

Well, in my case, before adding the external amp., the AVR used to be quite hot as well... not anymore! BTW my rack is widely open; therefore no fans required though.

Believe my "weak" Samson just decided to carry the heavy burden...

 

[darien87]

Yep. When I added an external amp I thought my 3805 would run cooler but it doesn't. There will be more power available for peaks on the other channels so I guess that's a plus. But thanks to Mike C I now have fans on my AVR and amp so they both run nice and cool.

Hey Duff,

I don't want to hijack this guy's thread, so I just sent you a PM about your fans.

 

[MACCA350]

Hey Duff,

I don't want to hijack this guy's thread, so I just sent you a PM about your fans.

Hey.....no fair.....please post....

cheers

 

[Duffinator]

Hey.....no fair.....please post....

cheers

He wanted to send me his Acurus amp for free but I declined.

 

[mnnc]

I believe too, correct me if I'm wrong, that some people bi-amp their speakers by using the recvr's power and the outboard amps power to drive their spkr's.

 

[Seth=L]

I believe too, correct me if I'm wrong, that some people bi-amp their speakers by using the recvr's power and the outboard amps power to drive their spkr's.

That would be assuming that the receiver's amp has the same input voltage/amperage as the power amp you are using. Some amplifiers have trim settings to render this problem if one exists.