Originally Posted by kinbaumjr
First time poster........
Welcome to AVS.
1. The bass management on the 105 only works for the 7.1 analog section and not the stereo analog section? Is this a correct statement? The reason I ask is because when I listen to 2 channel music on the 105 and I place the Marantz in DIRECT or PURE DIRECT mode, the subwoofers do not work. My fronts are set to SMALL and subwoofer set to LFE on the Marantz.. In addition on the 105 I have the speakers set to SMALL with subwoofer set to ON and Xover set at 80HZ. My understanding is that the 105 bypasses all the Marantz processing when using analog outs. This must not be the case for 2 channel listening. The only way I can get the subwoofers to play in 2 channel is to either use the STEREO mode on the Marantz or change the Marantz to DIRECT or PURE DIRECT mode and also change the subwoofer setting on the Marantz to LFE+MAIN. What is interesting is that when in stereo mode on the Marantz, while playing 2 channel music from the analog out from the 105, I can use the manual EQ and Audyssey. While using the 7.1 analog outs on the 105, the Marantz locks out the manual EQ and Audyssey.
Bass management applies only to the 7.1 outputs, not the stereo outputs, unless the stereo outputs are configured as FL/FR instead of stereo downmix in the setup menu. Most receivers can digitize stereo analog inputs and then apply digital processing, such as bass management and Audyssey. Most receivers cannot digitize multi-channel analog inputs as that requires more ADC (analog to digital) components that drive the price up. Usually only the flagship models can digitize multi-channel inputs. For example, the Denon AVP-A1HDCI and AVR-5308CI can both digitize the multi-channel analog inputs, but their less expensive models cannot.
When you place the Marantz in DIRECT or PURE DIRECT mode, that disables the bass management, which is why you don't get anything from your subwoofer when using the stereo outputs on the Oppo. When you switch to STEREO mode on the Marantz, that enables the bass management in the Marantz, so you get output from your subwoofer.
2. Maybe I do not have the settings correct but I did a sound comparison between my Panasonic BluRay player and the 105. Both were connected to the Marantz; Panasonic via HDMI and 105 via analog inputs. I listened to the same CD and flipped back and forth between the two to try to listen to the sound quality differences. The only difference I really noticed was the bass was tighter on the 105 and not by much. Sound stage appeared to be the same. I doubt the DACs in the Marantz are of the same quality as the 105?
It's hard to provide any guidance without more information (you haven't mentioned what amp and speakers you have, for example), but it's possible the rest of your system isn't good enough to resolve the difference. Just as an example, if you had cheap HTIB speakers, there's no way you would be able to notice the difference between the sound quality of the Panasonic and Oppo.
3. Maybe this is a question more about the Marantz processor but I will ask anyways. Can I bypass the video processing of the Marantz so I can connect the 105 to the Marantz via HDMI and use the 105s video processing. This would be preferred over connecting the 105 directly to my plasma display.
Generally speaking, there is almost always a passthrough mode that bypasses processing, but you should be able to get a definitive answer to this in the thread for your Marantz processor over in the receiver / processor forum.