slartibartfast
Major Contributor
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- Apr 18, 2024
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That's a bit weird. You have ethernet connected but the Pre-gain still refers to WiFi.
Pre-gain feature
- Thread starter san1
- Start date
Same here. Looks like a bug in the App.
Dunno. Have never used Wi-Fi . I use Roon to adjust headroom for streaming.
I don't think that pre-gain has been introduced to ensure headroom for EQ in the first place. We already had the volume limit for that.
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Right, understood. Just explaining why I don't use pregain adjustment for streaming Roon
Can you please explain why it has been introduced?
I am not sure about it…
Easy. Different sources tend to play at very different levels. Not every digital source is using the full swing up to 0 dBFS. From practical experience, HDMI ARC appears.to be noticeably more quiet than e.g. Spotify Streaming. Optical outputs of different devices have different levels as well.
Analogue inputs are even more of a potential problem. So far, WiiM have designed all of their devices so that typical analogue sources will not overdrive the input. Many "modern" analogue devices (post CD) tend to supply a max. output voltage of 2 V or even slightly above. Devices or rather device classes that have been around before like phono pre-amps, tape recorders or tuners often have a max. output voltage of 500 mV or less, sometimes down to 150 mV for full signal. Connect them to a WiiM line input and you will have to constantly readjust the volume to get roughly equal loudness.
WiiM Introduced per-source volume control to mitigate the inconvenience but from my point of view that didn't work out. First off, I never felt it would work the way I intuitively expected it to. Secondly, it doesn't address the issue independently from listening sessions.
If I know that my network sources are always louder than, say, my TV and my phono pre-amp, the pre-gain gives me the opportunity to correct for that difference once and then forget about it. Switching between sources will roughly maintain the same level (unless programme material differs a lot and normalisation is not available).
In the above case I could either decrease Wi-Fi/Ethernet pre-gain or increase HDMI and line input pre-gain or go for a combination of both, hoping to get me some additional headroom to digital clipping, if needed. But that extra headroom is not the primary goal.
Burnside
Major Contributor
“The Pre-gain feature allows precise control over the input levels of individual sources before they reach the main volume control. By adjusting the pre-gain for each source, you can ensure balanced volume levels across all inputs, minimizing noticeable differences when switching between them. This results in a more consistent and enjoyable listening experience, whether using analog or digital sources.”
How to Set Pre-gain for Individual Input Sources: A Comprehensive Guide
Overview The Pre-gain feature allows precise control over the input levels of individual sources before they reach the main volume control. By adjusting the pre-gain for each source, you can ensure balanced volume levels across all inputs, mi...
When did you get your diploma from WiiM University? You constantly beat me presenting official WiiM resources.“The Pre-gain feature allows precise control over the input levels of individual sources before they reach the main volume control. By adjusting the pre-gain for each source, you can ensure balanced volume levels across all inputs, minimizing noticeable differences when switching between them. This results in a more consistent and enjoyable listening experience, whether using analog or digital sources.”
How to Set Pre-gain for Individual Input Sources: A Comprehensive Guide
Overview The Pre-gain feature allows precise control over the input levels of individual sources before they reach the main volume control. By adjusting the pre-gain for each source, you can ensure balanced volume levels across all inputs, mi...faq.wiimhome.com
Burnside
Major Contributor
No, just a standard google search of "wiim faq <subject>" when looking for anything WiiM relatedWhen did you get your diploma from WiiM University? You constantly beat me presenting official WiiM resources.
Just a variation of the "amazon echo help <subject>" search I've used for years to good effect on an Alexa group I've admin'ed for years...
What is then the function of the "Per-Source Volume Control" switch in the same page?“The Pre-gain feature allows precise control over the input levels of individual sources before they reach the main volume control. By adjusting the pre-gain for each source, you can ensure balanced volume levels across all inputs, minimizing noticeable differences when switching between them. This results in a more consistent and enjoyable listening experience, whether using analog or digital sources.”
How to Set Pre-gain for Individual Input Sources: A Comprehensive Guide
Overview The Pre-gain feature allows precise control over the input levels of individual sources before they reach the main volume control. By adjusting the pre-gain for each source, you can ensure balanced volume levels across all inputs, mi...
Burnside
Major Contributor
It remembers the last volume setting when you used that source. I guess they could still work in conjunction with each other.
Edit: or by choice, separately.
I understand the differences, but now we have "Volume", "Volume Limiter", "Pre-Gain" and "Per-Source Volume Control".
A bit too much, IMHO...
Nobody forces you to use all. Just use what you need. I like to have a choice.
Currently I can work around my low line-in level with Per-Source Volume Control. But it needs a higher volume limit which is too high if my source is Ethernet. With Pre-Gain on line-in source I can set a volume limit which matches all sources.
Personally, I fully agree. Per-source volume control never made a lot of sense to me.
PS:
And I surely wouldn't give up "Volume" for anything else. Even if Aly volume control alters the signal by definition.
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In particular, I dont' understand well the difference between "Pre-Gain" and "Per-Source Volume Control".
Can someone please explain clearly such difference in the practical use?
TIA
Mr Ee
Major Contributor
See post #32 above.
Or perhaps if I refered to it as 'Per-source volume memory' does that help?
i.e. gain is always applied, 'memory' is the volume you last played that source at, before switching to a different source.
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