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Baxandall EQ is a special type of shelving equalizer based on a circuit
developed by English electrical and audio engineer Peter
J. Baxandall in
1950.
Baxandall
shelves have a very wide and gentle Q-factor which
gives them two rather unique properties: first, the phase shift is greatly
minimized and spread over a wider area than with conventional parametric
shelves, and second, in their useable frequency ranges most of the
affected audio frequencies fall under the rising or falling parts
of the Baxandall EQ curve. By the time a BAX shelf flattens out it’s so
high or low that it’s beyond the limits of the human hearing range. Taken
together, these properties have the effect of giving BAX shelves a very
transparent and musical sound which enables
users to make boosts and cuts without imparting negative
artifacts into the signal, resulting in a wide, open sound that
enhances the source’s sonic character that’s already there rather than
imparting its own sonic character. Fine adjustments can be made to the
final stereo mix without the complexity of other types of equalisation which can alter the structure of the mix.
If
you’re looking to add some presence, sheen, gloss, air, etc. to the high
end without things getting harsh, or you need to add some heft or weight
to the bottom without things getting boomy or muddy, Baxandall shelves are
a great choice.
The RoXdon BAX50s Baxandall
Stereo Equaliser is a handbuilt stereo 2-band shelving EQ. It features low
noise variable gain input and output Op-Amp circuits with front panel stereo controls
utilising sealed low noise potentiometers to enable precise adjustment of
the stereo line level signals. High quality WIMA capacitors are used in the
Baxandall EQ circuit ensuring the best performance from the equaliser.
The latest Mk.2 version of the BAX50s now features an additional 8K/12K
switch which shifts the high frequency curve position. The switch position
represents the frequency of the shoulder of the Baxandall curve. Using the 12K
position results in a more subtle, 'airy' top-end.
Also included is a EQ bypass switch so A/B comparisons can be
easily made.
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