Originally Posted by jehanzeb
Sound quality is important for most and in that regard the 3650 was the clear winner over even the 3600.
Besides, most people cutoff the receiver's amp section at 80hz and let the powered sub handle the frequencies which require lots of power.
Sound quality alone, it is definitely worth it over the 3600, 354 or 3550.
Originally Posted by PTAaron
Cool, thanks for the links. (seriously)
It is too bad they stripped so much away from it, or it might be a nice option if it truly sounds noticeably "better". For the price it is seriously lacking unfortunately.
I am a bit curious how it could sound significantly different - in tangible terms - if we assume they are both accurately reproducing the material being played without distortion - but that is a whole different discussion that may go into the realm of magic power cords and wires.
I too am curious how it could sound significantly different, as the 3650's amplifier topology is the same
as the 3600, and several
generations of their predecessors (including 1/2/3 series x54, x47, x45, x40, x35, x30)
Guess Harman knows not to mess with a good thing!
For the *amp* section, the real changes between models have been the power supply and the secondary capacitance. Naturally, the 3 series models are more stout than the 2 series, which are more stout than 1 series. Up until recently (x600) the 1 series models within the range above were 5.1 vs 7.1 for the 2/3 (excluding 6.1 avr230)
With the x600s dual secondaries on the power supply was no more and with it a loss in secondary capacitance to the comparable level predecessor, the x650s have a further cut in secondary capacitance and a physically smaller and lighter power supply.
changed a lot through this lineage of HK receivers are the room correction and DSP modes, which naturally have an enormous affect on the sound. I am unaware of any changes between the 3650 and 3600, besides the addition of PLIIz processing, however.
With all these models in a "pure" direct mode, you really would hear little difference between them until
the power output comes into play (high volumes, demanding material, power hungry speakers, etc.)
I have owned several recent 2 and 3 series HKs while keeping the same speakers, and have always been pleased by the familiar sound they share.
Fairly recently (a couple months ago) I was finally able to get some first hand experience with the 3650 as well, installing and setup for my father.
While on paper it is definitely 'weaker', in the real world with normal listening volumes it never seems lacking in power for his small efficient bookshelf/satellite based system. We felt sound was the same as the malfunctioning AVR 254 it replaced. I'm sure if it was cranked and/or more demanding loudspeakers were used, this may not be the case. Works well for his application, however.
Also, thought I'd mention that the internet radio operation/control seems a bit quicker with the 3650 than my 7550HD when switching stations and even just scrolling through the on screen menus. The layout is of course the same.