Originally Posted by tylerk86
Thanks for your response. I know the consensus is to leave the crossover at 80Hz, but I'm not using a sub, so I want the best bass/treble compromise from the two speakers. They are rated at 49Hz response. This is what I need to know what to do with.
As for the 16-bit part, that all makes sense, and you're correct that the Apple TV can't process anything higher. From what you're telling me, if I don't want any more up sampling of lower quality sources, I should leave it a "Auto" rather than a forced 16-bit for everything.
Since everything is already auto-converted to 48kHz by the Apple TV, and I cannot change this, is this frequency a problem for my receiver or speakers to playback fully? Lastly, if I look at the "info" of what is passing through my receiver, in the on-screen menu, it shows "PCM 2.0 48kHz" on the input, and "2.0 Direct" on the output. Is there a reason it doesn't give the output frequency? It's my understanding that "Direct" mode doesn't apply any processing whatsoever, so as long as its an audio stream that the receiver and speakesr can handle, it passes through untouched, correct? And is having only the front left and right speaker turned on in the receiver's menu the least intrusive way to down mix any streams coming in that may be surround sound, or anything other than 2.0?
Okay, with the two speakers you have you should set them as Full and not touch the crossover then. Since you receiver is a 309 and does not have Audyssey you will be just fine using Direct audio unless you want to use one of the worthless Audio modes like "Theater". Keeping them set to Full Band will make sure you speakers will play every single sound they are capable of playing.
As for if you speakers can handle the 48kHz, yes they can handle it without problem. When your receiver is referring to PCM 2.0 48kHz it is referring to the bit rate and not the frequency response. They are separate, even though they use the Hz rating for frequency. Normally when a receiver or TV is displaying information about digital audio is is always referring to the bit-rate of the digital signal. (the amount of data per second transmitted). When you are looking at
waveguides, charts, crossovers or equalization on you receiver it is referring to the sonic wavelength. (the actual sound, higher the number the higher the pitch)
The reason it shows 2.0 direct on the output is because this is the analog output to your speakers and the bit-rate is not relevant.
Finally, there really is no downmixing happening or necessary. A 5.1 DD /DTS/Neo6 source has to have a 2.0 and mono data built into it to be compliant with standards so that people who only use their speakers on their TV will suddenly not be able to hear someone talking on the center channel audio source. On your receiver just use direct, you don't have to enable or disable any speakers except for the Subwoofer in the menus, have this set to off. The receiver knows there is only 2 speakers and will only access the 2 channel audio inside the 5.1 mix.