I originally bought my Squeezebox duet so I could play it through my Musical Fidelity X-DAC-v3 quad stack (power supply, DAC, tube buffer, headphone amp). The MF DAC has auto-input sensing. However, since the duets outputs are never completely zero, the DAC always senses an input even when the duet is turned off and the appropriate option in the player set-up to disble outputs when off is turned on. A bug 1397 was filed and I waited for a fix. Target milestones kept getting rescheduled and finally the bug number changed to Bug 10077. To this date it is still unassigned. I'm REALLY disappointed.
Here are some excerpts from the bug filing Richardson James 2008-11-19 11:31:25 PST BUG 571, Comment #75 Customer is requesting that the S/PDIF ports be turn electrically off when the player is in an 'off' or standby state.Comment 1 Richardson James 2008-11-19 11:43:02 PST Correction: Bug 1397, Comment #75Comment 2 Sean Adams 2008-11-19 14:05:32 PST This bug concerns a further enhancement of the "disable outputs when off" capability. Some receivers still interpret our S/PDIF output as being active when we try to disable them. These receivers seem to be detecting the input electrically, as opposed to using an s/pdif receiver chip to test for a valid signal. What is desired is that when disabling s/pdif outputs, that we not merely ceaqse transmitting a valid carrier, but that any electrical modulation of the outputs be stopped. The coax output would go to 0 volts DC, and for the LED would turn off. Note to Slim QA: the Digliyzer can NOT be used to test this. It doesn't know the difference between "no carrier" and "no voltage".Comment 3 Clive Backham 2008-11-21 08:51:38 PST In addition to the need for 0V on the output to support some DACs, there is another useful side-effect of doing this. The presence or absence of a voltage on the SPDIF output could be used (via a suitable external device) to trigger power to ancilliary devices such as amplifiers. Felix's PowerSwitchII plugin can be used for this purpose on the Squeezebox Classic and Transporter, but not on the Squeezebox Receiver (since it has no headphone output).Comment 4 Blackketter Dean 2008-11-23 12:18:05 PST Consider for 7.3.1. Sean?Comment 5 Ajay Ravindranathan 2008-11-29 10:46:34 PST Still not able to automatically switch my Musical Fidelity X-DAC v3 by turning off receiver inputs. I guess the DAC uses current sensing rather than spdif receiver chip to check for signal. I'll have to wait for 7.3.1 :-(Comment 6 Richardson James 2008-12-19 08:03:02 PST Changing target to next releaseComment 7 Sean McVicker 2009-04-14 19:21:33 PDT As with comment #5, I have a Mobile Fidelity X-DAC V3, which I have hooked up to the digital output of an SB3. (running 7.3.2) I have the player's settings configured to "disable outputs when off." When connecting the player to the DAC with the SB3's power off the DAC still detects a live input. This occurs with both the coax and optical outputs of the player. As a sanity check, I also connected the DAC to the digital output of my DVD player. As expected, with both digital and coax inputs, the DAC indicates that the there is no live input when the DVD player is powered down. (confirming that the DAC is able to accurately identify the presence of a live input) -- ajayrav ------------------------------------------------------------------------ ajayrav's Profile: http://forums.slimdevices.com/member.php?userid=19853 View this thread: http://forums.slimdevices.com/showthread.php?t=66745 _______________________________________________ discuss mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/discuss
