Does the RX-V673 have Analog Bypass ? - AVS Forum
Forum Jump: 
 
Thread Tools
Old 03-24-2013, 02:31 PM - Thread Starter
Newbie
 
NicC4ge's Avatar
 
Join Date: Mar 2013
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Hi, I want to know if I am using analog inputs, that the rxv-673 will bypass any digital circuits and keep the signal 100 % analog to the speakers. I don't want any extra analog-to-digital and digital-to-analog conversions.
If I avoid any DSP processing and bass/treble management will this work ?
Do I have to also use the Pure Direct option ? But this turns off the Subwoofer.
is it possible to have analog bypass and still get 2.1 output ?
Any help here would be appreciated.

Thanks
NicC4ge is offline  
Sponsored Links
Advertisement
 
Old 03-24-2013, 07:01 PM
AVS Special Member
 
BIslander's Avatar
 
Join Date: Jul 2005
Posts: 8,593
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 92 Post(s)
Liked: 135
With most receivers, it is not even possible to do any digital processing with the multichannel analog inputs. That would require an analog to digital conversion on those inputs, which is a very rare feature usually only found on very high priced processors. The manual should explain that. If such a feature is available, there will likely be a setting controlling whether or not to digitize.

Most receivers simply act as amps with MCH analog input. No need to worry about any of the settings because they are not used. That means, of course, that any bass management and distance adjustments must be done on the source device prior to the digital analog conversion.
BIslander is online now  
Old 03-24-2013, 07:46 PM - Thread Starter
Newbie
 
NicC4ge's Avatar
 
Join Date: Mar 2013
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
If you use a DSP mode like "Cellar Club" this is going to upmix a stereo analog source into 5.1, and in order to do that, doesn't it have to covert the analog signal back to digital. Then of course it will do another digital to Analog conversion for the speakers. I'm trying to avoid extra unnecessary conversions. I did read the manual but its not very clear on analog bypass. And as far as I can tell the Pure Direct minimizes Digital circuits for the cleanest most direct path. But does that also mean the same for analog.
If I avoid DSP modes and Bass management, does that ensure analog bypass or not ? Also do I have use the Pure Direct switch or not ?
thanks.
NicC4ge is offline  
Old 03-24-2013, 08:01 PM
AVS Special Member
 
Kilian.ca's Avatar
 
Join Date: Mar 2007
Location: Ex-50Hz, now 60Hz
Posts: 1,901
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 36
Pure Direct is the closest you can get but whether the analogue input can be channelled TOTALLY SEPARATE from the digital circuit is hard to tell without looking at the schematics (wiring diagram). You can try asking Yamaha support but there's no guarantee of the correct answer either.wink.gif

The only physically sure way is to use a separate 2CH integrated amp for your 2CH analogue inputs.

Having said all that nowadays most AD conversion is not a problem to make a big issue out of it.

Audiosceptics accept audio trials using 25 people. A recent Oxford study with over 353,000 patient records from 639 separate clinical trials shows for every 1,000 people taking diclofenac or ibuprofen there would be 3 additional heart attacks, 4 more cases of heart failure and 1 death every year.

Kilian.ca is offline  
Old 03-24-2013, 08:05 PM
AVS Special Member
 
BIslander's Avatar
 
Join Date: Jul 2005
Posts: 8,593
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 92 Post(s)
Liked: 135
NicC4ge - Sorry, I misunderstood your situation. Thought you were asking about MCH, not the regular stereo inputs.
BIslander is online now  
Old 03-24-2013, 08:08 PM
AVS Addicted Member
 
afrogt's Avatar
 
Join Date: Jul 2003
Location: SF Bay Area
Posts: 23,414
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 295 Post(s)
Liked: 418
the 673 doesn't have MCH analog inputs anyway....

Afro GT
afrogt is offline  
Old 03-26-2013, 05:04 AM - Thread Starter
Newbie
 
NicC4ge's Avatar
 
Join Date: Mar 2013
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
I did try Yamaha support. But you don't know if the person answering actually has any product knowledge or bothered to get actual details from someone who knows. Anyways, their generic answer was " the analog inputs automatically bypass the receiver's DAC if you don't use any of the DSP modes". Pure DIrect was not explained as to whether it applied to Analog bypass also.
NicC4ge is offline  
Old 03-27-2013, 03:06 AM
AVS Special Member
 
Kilian.ca's Avatar
 
Join Date: Mar 2007
Location: Ex-50Hz, now 60Hz
Posts: 1,901
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 36
What is your source that you insist on having analogue bypass?

You could try again and ask to speak with a technical staff or ask for a schematics.

Well, can you hear any difference with or without the Pure Direct, with no processing in each case?

If not, then don't torture yourself over this. smile.gif

Audiosceptics accept audio trials using 25 people. A recent Oxford study with over 353,000 patient records from 639 separate clinical trials shows for every 1,000 people taking diclofenac or ibuprofen there would be 3 additional heart attacks, 4 more cases of heart failure and 1 death every year.

Kilian.ca is offline  
Old 03-27-2013, 09:27 AM
AVS Special Member
 
basshead81's Avatar
 
Join Date: Mar 2013
Location: Fort Wayne, IN
Posts: 6,447
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 35 Post(s)
Liked: 1706
is that not what pure direct is? oh and yes I can hear a big difference using pure direct with my cd-600 over 2 channel stereo, at least on my 773.
basshead81 is offline  
 

Tags
Yamaha Rx V673 Receiver
Thread Tools


Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off