Given that 16 bits is the input and gives "perfect sound forever"?Maybe it does...
Just a reminder that "perfect sound forever" meant can be played (and copied) an infinite number of times without degradation.
Your input file might be 24 bits, but because of the SNR of the source material, the lowest 8 bits won't contribute anything anyway.
Modern volume control algorithms tend to use at least 32 bits, most likely 64
bit floating point. Any rounding errors will be in the lowest bits that are discarded anyway.
See above.
*2
Impedance* and all the TS parameters are also irrelevant. As cowanaudio said the only thing that matters is having the power to drive the driver.
*As long as you have enough power @ the speaker impedance.
For the DSP controlled Genelec speakers, the manufacturer says the recommended method to control the volume is to use the speaker's internal DSP volume control, because this happens after the filtering. If the volume control happens before the speakers via preamp or digital volume control, the the speakers doesn't get the full-scal signal to begin with it.
This is the generally recommended method to control the volume for DSP controlled speakers (like Fusionamps), it matters where the volume control occurs?
It would be great to have an external digital preamplifier-like master unit for the Fusionamps that controls and displays at least FA internal volume, preset and input, has multiple inputs (including USB audio, HDMI, HDMI ARC, etc.) and sends digital signal (pref AES/EBU) to both Fusionamps. Oh, and it would turn the Fusionamps on and off.
This is the generally recommended method to control the volume for DSP controlled speakers (like Fusionamps), it matters where the volume control occurs?
It would be great to have an external digital preamplifier-like master unit for the Fusionamps that controls and displays at least FA internal volume, preset and input, has multiple inputs (including USB audio, HDMI, HDMI ARC, etc.) and sends digital signal (pref AES/EBU) to both Fusionamps. Oh, and it would turn the Fusionamps on and off.
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A display has been promised a couple of years ago, but they don't ride the day they saddle, it seems
Yes, in theory using the volume management in the DAC chips can yield higher signal-to-noise-ratio since they can use more bits internally.
In practice though? Assuming the gain structure is good then the noise will be unhearable in both cases. And it is easier to do volume managemet first so that is my preferred solution.
Before going all in on a fancy volume controller: is it really neccesary? If it really made a difference the SPDIF format would just have been bumped to 32 bits already.
Imaging with 2 FA modules
In a test on the italian TNT website as well in several user reports it was noted that the AS2.100 did not sync left and right when daisy-chained digitally, which lead to poor imaging ([Review] Hypex AS2.100 active speaker module - [English])
Is this fixed with the FA Fusion Plate amps? I think I read something, but can not find the relevant post again... Anyone who knows if there is still a catch or if the FA modules can just be daisy-chained (Left, Right) without any timing and following image problems?
In a test on the italian TNT website as well in several user reports it was noted that the AS2.100 did not sync left and right when daisy-chained digitally, which lead to poor imaging ([Review] Hypex AS2.100 active speaker module - [English])
Is this fixed with the FA Fusion Plate amps? I think I read something, but can not find the relevant post again... Anyone who knows if there is still a catch or if the FA modules can just be daisy-chained (Left, Right) without any timing and following image problems?
I used them that way many times. No problem at all, the FA have a great stereo image with really sharp L/C/R even if the converters are not the best in my opinion.
A user over at ASR wrote in a How-To that DSP controlled speakers may give varying frequency response depending on the SPL the speaker is playing at. Obviously not due to driver response, but because of their digital control: How to make quasi-anechoic speaker measurements/spinoramas with REW and VituixCAD | Audio Science Review (ASR) Forum Does this apply to the FA-series and if so, which settings do influence such behaviour?
I can't find any discussion of such an effect in the linked thread.
I don't see how it would work though. The FA is just a normal DAC connected to a normal amp. The only difference is it is mounted in the same enclosure.
The closest I can think of is the compressor in the FA which is a limiter where you can input a max amount of watts into a given impedance where the amp limits the response above that level. I don't believe that is what you reference though.
Wow, I never ever heard about that effect. Why would the DSP controlled speaker have significantly different bass response at different SPL?
Maybe one thing comes to my mind, a level dependent loudness effect, which can be programmed into the DSP.
But the FA DSP doesn't have such a feature.
Any other thoughts?
Maybe one thing comes to my mind, a level dependent loudness effect, which can be programmed into the DSP.
But the FA DSP doesn't have such a feature.
Any other thoughts?
Remember that Napi is reviewing speakers more than designing them, so it's a bit different than someone setting up a Fusion.
Anyhow, he's mostly talking about limiters. For a recent example, see the "response linearity" section of Erin's Kali IN-5 review.
Anyhow, he's mostly talking about limiters. For a recent example, see the "response linearity" section of Erin's Kali IN-5 review.