motu ultralite schematics/mod.tips?

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K

kooma

Well-known member
Joined
Jan 26, 2006
Messages
473
Location
Espoo-Finland
Found some old topic about bla- modded motu 2408,
and that got me thinking about modding my ultralite.
anyone got schemas for it?
For starters I thougth about changing some NJM4580 to something else on few channels and then running some tests..
 
ok. measured vcc -the 4580's run on +/-5,7V
anyone know any decent(=better that 4580) op amp that run on low voltages?
iirc. bla used NE5532??
 
ordered some sample opamps and I did some measurements with fuzzMeasure..
gonna try them on one channel first, looks guite easy..

 

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..i'll keep on talking to my self:)

changed one channel 4580 to lme49720ma, I think I hear small difference, but after running measurements, I'm not so sure anymore;)

heres the craph:
 

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and heres the difference of 4 measurements;

original input to orig.out on 2channels
vs. modded input to modded out 2ch.
 

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