Originally Posted by nabril
I just stumbled upon this thread after owning a 347 for 10 years or so. Wow.
1) I still own a set of Bose Acoustimass speakers (5 cubes and the bass module), and I'm not in the position to replace them yet. I know they are overrated and a pain, but they sound ok. After a recent move, I re-installed everything, and I would like to know if anyone else has Bose speakers connected to the 347, and what settings you chose for the speaker setup. We all know that the bass module processes and equalizes the sound, so I'm sure the AVR's EZSetup gets "fooled" by the equalized sound (or maybe not). I've read other threads linking the 2 (347 and Bose), and most start by saying to replace the Bose speakers and to get real speakers. As I said, I cant do that at this time, and I''d like to enjoy them a bit longer. Any suggestions will be appreciated.
2) I have my DISH DVR connected to the AVR via optical cable, and to the TV via HDMI; I dont want to hear everything (news, Seinfeld reruns, etc) in surround mode, thus the AVR stays off most of the time. I see that I can input using HDMI, and I ask 2 questions: A) If I connect my dish DVR to the AVR using HDMI, and from AVR I go to my TV also using HDMI, do I HAVE to turn on the AVR receiver to listen to my TV? Or does the signal pass through with the AVE being off. B) What sound is "better" optical or HDMI?
I have the same questions for my Blu Ray player, but if I get answers to question 2, I will apply the same thought process to it. I currently connect my Blu Ray player to the AVR using COax digital, but I am sure HDMI sound is better.
1). You can use your old Bose acoustimass system for the speaker channels, however it should be supplemented with a real powered subwoofer for the ".1"/lfe/sub out channel from AVR
You can let ezset/eq do it's thing and see the results. Without a separate powered sub EZSet/EQ will say you have no sub (which is normal/correct, the acoustimass module is NOT a subwoofer) and will set all channels to small with a high crossover except for the fronts (which will be set as large)
If you set the crossovers manually, they will need to be high - 150 or 200hz setting for best results with all speaker channels 'small' and the extra powered sub.
If you do not add a powered sub any content below the crossover points will be lost. You can still keep the surrounds and center crossed over high, but the front channels will have to be set to large and sub setting off, This will redirect any low frequency content within the surround and center channels to the fronts (as well as LFE/sub) and consequently the bass module itself.
While the bass module can go as low as ~50hz within the +/-3db frequency range, the cubes themselves only get to ~210hz within +/-3db range - which makes the module extremely localizable. (This applies to nearly all small sub/sat systems) Anything below ~40hz is basically inaudible from the bass module, so again supplement the system with a separate powered sub for best results.
2) a)AVR must be on to pass through HDMI, leave it connected as you have it
B)there will be no sound quality difference, an HDMI connection for audio is not required for this source as it does not exceed the limitations of spdif digital (does not stream 7.1 PCM or the hd audio codecs (dtshd, truehd))
For your bluray player, DO use the HDMI connection for audio and video. The 247/347 can take 7.1 mpcm audio over HDMI with the final firmware version - so set your player to decode/output PCM and you will be able to enjoy the HD audio tracks on blurays with your older receiver, despite lacking on-board dts-hd or truehd decoding.
Leaving the players output resolution at 1080p will keep the receiver from doing any video processing, it will simply just pass it through.
BTW, the 247/347 is just over 5 years old now (2007 release)Edited by dRockHK - 12/27/12 at 12:38pm