Originally Posted by ibg5
Very thanks for the help in the decision of a problem.
By your advice I have made following experiment.
From D2 I have disconnected ALL sources and have disconnected them from mains. Has left connected only DVD-player Pioneer DV-868AVi (DV-59AVi). At switched off a DVD-player I include D2. Hissings are not present. At inclusion of a feed of a DVD-player it appears. At switching-off of a DVD-player from mains hissing does not vanish. Further I have disconnected a digital connecting cable from a DVD-player and have connected a player on analog connection, and in the menu 5 I have chosen Analog-Dir. In this case already at inclusion D2 (at the switched off DVD-player) I have heard the same hissing. Specified in the specification for input Analog-Dir a signal-noise 107 dB obviously mismatch that noise level which has my copy D2. Subjectively is approximately 60-65 dB. Very similar, that the specified problem is connected with internal components D2.
Best regards, ibg5.
I use a 59avi myself with my D2 and have no such problem. I see nothing unusual in your software version or source devices to explain this. I can think of no setup error you might have made that would explain this. I believe you have a hardware problem in your D2. Anthem will likely need to swap it out for a new D2.
The most important result is that you get no hissing when the DVD player is connected by digital cable but not actually playing at the start. But the hiss returns as soon as the DVD player starts playing, and continues even if you then stop the DVD player. That eliminates any possibility that you are hearing EMI/RFI interference from some external source such as a light dimmer switch.
To verify this, try the following:
* Write down any D2 settings that you can't simply remember. You'll also need them if Anthem replaces your D2.
* Go to Setup / Save and Restore Settings and do a Save User Settings (so you can restore them later). Then do a Reload Factory Defaults. You will likely lose your TV picture but you can still continue using the Front Panel display.
* When the Reload Factory Defaults completes, use the Back button to exit the Setup menu. Then turn off the D2. Also turn off the power switch on the back of the D2.
* Disconnect EVERYTHING from the D2 -- and I mean EVERYTHING -- except for: (1) The D2 power cord. (2) One audio output cable from the D2 to your amp for the Left Front speaker channel. Leave the other audio output cables to the amp disconnected. And (3) an OPTICAL audio cable from the DVD player to the D2's Optical 1 input. It must be an OPTICAL audio cable for this test (the optical cable has no metal and thus has no electrical connection between the DVD player and the D2). Do not connect ANY other cables to the D2. No video input cables and no video output to your display for example. No HDMI cables. No other source devices. No cable to your subwoofer.
* Also disconnect any other cables from the DVD player except for the DVD power cable and the OPTICAL audio cable to the D2.
* Turn on the back panel power switch on the D2. Power up the D2.
* Using the Front Panel display, go to Setup / Source Setup / DVD1 and enter Audio In = Optical 1. Also enter Auto Dig = NO. Make no other changes.
* Back out of the Setup menu. You will not need to make any changes in the Video Output menu or the Speaker Configuration menus for this test.
* Turn off the D2. Remove any disc from the DVD player and turn off the DVD player. The amp can remain on.
* Turn on the D2. When the D2 finishes powering up, select the DVD1 input and adjust the D2 main volume to a normal listening level.
QUESTION 1: You should hear no hiss. Correct?
* Turn on the DVD player (no disc playing).
QUESTION 2: Still no hiss, correct?
* Put a normal, music CD in the DVD player and play it. You should hear music from your Left Front speaker (the only audio output from the D2).
[If the D2 main volume is too loud or too soft for this CD, adjust it now to a normal listening level, remember that value, and start over from where you powered down the D2 and DVD player just above. Adjust the D2 main volume back to this value after you power up the D2.]
QUESTION 3: With the D2 main volume properly adjusted to hear the music from the Left Front speaker, do you now also hear an annoying amount of hiss from that speaker?
* Reach behind the DVD player and disconnect the Optical audio cable. The music will, of course, stop.
QUESITON 4: Do you STILL hear the same amount of hiss?
If the answer is YES to these 4 questions, then you likely have a hardware problem in your D2.
It can't be EMI/RFI since there is no hiss until you start playing the CD.
And it can't be a problem in your DVD player since the hiss, once it begins, keeps going even after you disconnect the optical digital audio cable.
It is just barely possible that the hiss is being generated in your amp. Your amp may be muting itself until it sees an input signal. When an input signal appears, the amp unmutes and the hiss appears. But the amp stays unmuted (with the hiss continuing) even after the signal vanishes.
This is not likely because of your test with the analog inputs to the D2 -- i.e., you had hiss even before you started the DVD player.
You can eliminate this possibility by trying a different amp. Bring the D2 back to your dealer and test it with one of the dealer's amps.