Rockbox Development > Feature Ideas
line-level output for Sansa e200
PickupBetty:
It will probably never happen, since it's already been visited elsewhere in the forum, but I'll go ahead and mention it here.
The only exception I can find to Rockbox's complete superiority over the Sansa e200 original firmware is the lack of line-level output from the dock connector. I'd love to be able to use my e200 with my boombox, but I'm afraid I'll blow my e200's amp by constantly cranking it up near max.
It's strange: my iPod Photo's Rockbox has line-level output for the dock connector, just not my Sansa.
But even without the line-level output, Rockbox for Sansa is fabulous. Thanks, developers!
saratoga:
I don't think anyone has looked into locking the line out volume at max automatically, but its pretty easy to change manually when you're using line out (just be sure to lower it again before using headphones).
PickupBetty:
How does one do that?
First, let me make sure I'm not way off; I am merely a casual user. As I understand, line-level is the original output level of a DAP. When the output hits the headphone jack, it is impeded -- meaning it hits some sort of resistor so it's not as loud.
So when I try to use my Sansa (via the headphone jack) as a line-in to my boombox, I have a subdued signal that I then have to crank back up to a loud signal via volume control.
But you are saying that I can lock the line out (of my dock connector) to max somehow -- this is different from just setting my headphone volume to max. Then I can use the dock connector to connect to the boombox, but not have to alter my volume control. And save my amp.
Am I close? Thanks for your input.
Llorean:
If you set the e200's volume to 0db it's outputting from the DAC at the same level as you'd call "line level." Then if you use the dock connector (which may or may not have different properties than the headphone jack physically) you'll be getting the same line-level as the original firmware.
saratoga:
--- Quote from: PickupBetty on December 15, 2009, 01:01:46 PM ---First, let me make sure I'm not way off; I am merely a casual user. As I understand, line-level is the original output level of a DAP. When the output hits the headphone jack, it is impeded -- meaning it hits some sort of resistor so it's not as loud.
--- End quote ---
Its actually the other way around. The line out has the resistor, the headphone out has almost no resistance (ideally none at all).
--- Quote from: PickupBetty on December 15, 2009, 01:01:46 PM ---But you are saying that I can lock the line out (of my dock connector) to max somehow -- this is different from just setting my headphone volume to max. Then I can use the dock connector to connect to the boombox, but not have to alter my volume control. And save my amp.
Am I close? Thanks for your input.
--- End quote ---
I'm saying you could write code to automatically raise the volume, or else just raise it yourself. 0dB is line out.
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