Polk

[MacManNM]

If want to continue a rational dialogue I am game - if you want get
personal and call people clueless you will have to find someone else
to communicate with.

Obviously the AVR-3805 and AVR-4802 sound differently driving
4 ohms. The spec sheets of each describe characteristics driving
into 6 ohms and these characteristics are substantially different.

How much different are they?

As long as the units are running within their designed limits they will sound virtually identical. The load doesn't matter. It all works out to SPL out. One might be louder than the other but the FR and THD will be the same.

 

[tdeluce]

How much different are they?

As long as the units are running within their designed limits they will sound virtually identical. The load doesn't matter. It all works out to SPL out. One might be louder than the other but the FR and THD will be the same.

The load certainly does matter. A 4 ohm load will require twice as
much current as an 8 ohm load; a 6 ohm load will require 50% more
current than an 8 ohm load. It is obvious by the SQ and the Denon
supplied spec sheets that the AVR-4802 is able to drive the load
a great deal better than the AVR-3805. This is primarily a function
of the quality and size of the AMPs, i.e. an AMP that can supply
higher current can more easily drive the load. This is basic
electric circuit design...

 

[MacManNM]

The load certainly does matter. A 4 ohm load will require twice as
much current as an 8 ohm load; a 6 ohm load will require 50% more
current than an 8 ohm load. It is obvious by the SQ and the Denon
supplied spec sheets that the AVR-4802 is able to drive the load
a great deal better than the AVR-3805. This is primarily a function
of the quality and size of the AMPs, i.e. an AMP that can supply
higher current can more easily drive the load. This is basic
electric circuit design...

Again:
As long as the units are running within their designed limits they will sound virtually identical.

Besides, it's only 3db.

 

[WmAx]

The load certainly does matter. A 4 ohm load will require twice as
much current as an 8 ohm load; a 6 ohm load will require 50% more
current than an 8 ohm load. It is obvious by the SQ and the Denon
supplied spec sheets that the AVR-4802 is able to drive the load
a great deal better than the AVR-3805. This is primarily a function
of the quality and size of the AMPs, i.e. an AMP that can supply
higher current can more easily drive the load. This is basic
electric circuit design...

Just an honest question: Which part of "As long as the units are running within their designed limits they will sound virtually identical." did you not understand?

-Chris

 

[MacManNM]

Just an honest question: Which part of "As long as the units are running within their designed limits they will sound virtually identical." did you not understand?

-Chris

been waiting for you or mrty here

 

[tdeluce]

been waiting for you or mrty here

I agree that using the AVR-3805 driving Polk LSi series at
anything close to reference level, it does *not* sound the same
as the AVR-4802 because the AVR-3805 it is operating outside
of its limits.

And this is what I observed when I had one for a week. That is,
at lower volumes I could not tell the difference but anything close
to reference level there was a significant difference.

Thanks for the interesting discussion

 

[shokhead]

Well since i only have a little old 2805,it seems the Lsi's would not work.

 

[MacManNM]

Well since i only have a little old 2805,it seems the Lsi's would not work.

Sure it would. You can always buy an external amp.

 

[Buckeyefan 1]

Well since i only have a little old 2805,it seems the Lsi's would not work.

Assuming you listen to music at reference level, do not use bass management, and do not use a subwoofer.

 

[tdeluce]

Well since i only have a little old 2805,it seems the Lsi's would not work.

I personally would use 8 ohm speakers with
the 2805 with a separate subwoofer...