Rockbox Technical Forums
Rockbox General => Rockbox General Discussion => Topic started by: john0008 on May 08, 2019, 09:29:16 PM
-
Hi guys,
I did a imod modification to one of my 5th classic.
The sound quality has been greatly improved via the line out compared with my other 5.5th gen Classic. But unfortunately no volume control what so ever with 3.14 version of Rockbox.
however, I updated the rockbox to the 4ed5727 on my imod 5th gen yesterday, and it allows me to control the volume via line out. (it's still very loud, but if you just turn up 2-3 notches, it sounds great via headphones).
So I updated my other 5.5 gen ipod classic (without Modification) to 4ed5727, guess what, you can control the volume via line out as well.
then I updated my Ipod mini 2nd gen to 4ed5727, NO volume control via line out.
have you guys experienced this? is that a new feature of 4ed5727?
cheers
John
-
The way it is supposed to work is that for gain values above about -50dB, you get constant gain on the lineout. For very low volumes, the ipod hardware doesn't have any way to lock the gain, so you get changes to the line out volume. What volume are you listening at?
-
I am new to this, so don't know much about the gain or loss.
let's say, for a scale from 0 to 100, the reasonable listening range is between 1-10 (comparable to the headphone jack out), above 10 is too loud.
I have simply upgraded to the new rockbox dev version and haven't changed any settings (only the font and unicode for display).
however, the volume is now controllable from 0 to 100, it doesn't flat out after certain threshold/point
I clearly remember when I first switched to rockbox version 3.14, the volume is not controllable.
That's why I bought a headphone amp.
I think it has nothing to do with Modification as well, as the unmodified Ipod has the same control ability.
By the way, if I switch back to Apple firmware = no volume control
From what I have read, there is no way to control the volume via line out directly, has to come by with some kind of assistant from other device?
My headphone amp just arrived yesterday, if I knew I could control the volume, I wouldn't bother to buy an amp in the first place :)
It's hardware dependent.
On the H100 and H300, the line out is stuck at the same level as the headphone out. If you set it to 0dB, it WILL be a true line out though.
On the iPods, they can be set independently. We've locked the line out at 0dB though theoretically it can be adjusted.
On other players, it will depend on how they're set up.
I think I might have found the answer, but just don't know why it isn't working with the version 3.14 or with my Ipod nano 2nd though.