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Hardware EQ for Ipod 5th gen.

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soap:
Are you using pre-cut equal to the amount of software EQ being applied?

h.finn:
OOOOOOOOPPPPPPPPPSS
Sorry, I didn't understand
 :-[ :-[
I actually have precut at 0
!!
Could that be part of the problem?
Because yesterday evening I switched off the equalizer all together and moved the bass to 0 value and (the bass) was still distorted.
...
P.S. i noticed that on the RB instructions, when the graphical eq is shown, there is always, at bottom of the screen, the text: "Edit mode: Gain".
As in:
http://download.rockbox.org/daily/manual/rockbox-iriverh300/configure_rockbox/images/ss-equalizer-220x176x16.png
..........
Well: I actually don't have that little footnote!
??

soap:
If you don't apply precut any software EQ gain is likely to exceed the headroom in your audio files and clip (distort.)

Modern mastering techniques leave almost no headroom, and older-style mastering techniques never, in my experience, left the (at least) 12 dB of headroom you need to prevent your EQ settings from clipping.


*I said (at least) because I didn't study the Q values of your software EQ settings and for all I know your bands are overlapping, meaning that some frequencies may be boosted more that the highest gain value (12 dB) I saw.

So, in summary.

1 - negative pre gain in the software EQ equal to the maximum applied EQ gain.
2 - "Sane" volume level set to prevent Rockbox from applying any volume control in the digital domain.
3 - Line-out or volume set to 0 and then use headphone out as a line-out.
4 - Distortion still?
 

h.finn:
Hi Soap,
I'm taking notice of your suggestions.
And will try them out tonight!
But: "use headphone out as a line-out"
??
The sound quality is inferior to the dock!
Isn't it?

H.

torne:
Why should it be? Line out and headphone out are the same thing, except the latter has a volume control on it. They're both driven by the same DAC. If you set the volume to 0dB then headphone out will be at the exact same level as line out.

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