Vinyl control preamp always on?

Reported by Albert Santoni on 2008-05-29
4
Affects Status Importance Assigned to Milestone
Mixxx
Undecided
Albert Santoni
1.6
Undecided
Albert Santoni
1.7
Low
Albert Santoni

Bug Description

The vinyl control input preamp might always be on. Sean reported on mixxx-devel:

> - I tested first with xwax 0.4 (just released) and things work pretty
> well there. (Though the line level output from my X2s was way too high
> so I had to run it through my mixer to gain it down.) Starting up Mixxx,
> I had to turn the level down quite a ways _further_ for Mixxx to react
> to the timecode! Is the phono preamp somehow enabled even though I have
> it set to the lowest setting??

Albert Santoni (gamegod) on 2008-05-29
Changed in mixxx:
assignee: nobody → gamegod
status: New → Triaged

Note that I was using a Serato Scratch Live CD and set Mixxx to that option.

Albert Santoni (gamegod) wrote :

Nothing in the code hints at the difference here. It's possible that it could be xwax using OSS verses Mixxx using ALSA, as each audio system has its own mixer. For example, the ALSA mixer might have had your input turned up higher.

If you're bored, it's worth a shot trying both apps with the same API (OSS and OSS would work) and seeing if you get the same problem.

Thanks!

Albert Santoni (gamegod) on 2008-07-06
Changed in mixxx:
status: Triaged → Invalid

Just checked Mixxx using OSS (since OSS is all I can use in xwax) beta 4 and the problem still exists. I basically have to lower the signal to half of the volume that I need in xwax to get nice clean full circles.

Changed in mixxx:
status: Invalid → New

Seems to work correctly in the 1.7 branch now. (I can directly connect my X2's line level output and vinyl control works properly.) Marking fixed.

Albert Santoni (gamegod) on 2009-05-12
Changed in mixxx:
status: New → Fix Committed

I didn't test trunk. Is it fixed there too?

Maybe I misunderstand how the bug tracker is supposed to work these
days. What's the point of having top-level bugs if we're only going to
have branches in the future? (Maybe this will make more sense after
the meeting on sunday...)

On Tue, May 12, 2009 at 6:35 AM, Pegasus <email address hidden> wrote:
> I didn't test trunk. Is it fixed there too?
>
> --
> Vinyl control preamp always on?
> https://bugs.launchpad.net/bugs/235641
> You received this bug notification because you are a member of Mixxx
> Development Team, which is subscribed to Mixxx.
>

Albert Santoni wrote:
> Maybe I misunderstand how the bug tracker is supposed to work these
> days. What's the point of having top-level bugs if we're only going to
> have branches in the future? (Maybe this will make more sense after
> the meeting on sunday...)

The top-level is for trunk.

The branches should periodically merge trunk into them, fixing the same
bugs there.

Release branches that have bug fixes applied should periodically be
merged back to trunk, fixing the same bugs there.

I hope to God LP will auto-mark bug statuses with these merges...

Sean

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RJ Ryan (rryan) on 2010-10-05
Changed in mixxx:
status: Fix Committed → Fix Released
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