O W N E R S M A N U A L
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OPERATION - EQ SWITCH
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The Z-ROCK has two EQ curves that can be selected via the toggle switch on the rear
of the Z-ROCK. Up = EQ setting A and Down = EQ setting B. Both of these EQ
settings are fully variable. That is to say that each curve can be adjusted from flat to
it’s fully
developed shape. We’ll talk more about that later.
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Here are the two curves:
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The dark mask at the top of the graph represents EQ setting A and the line just below it
represents EQ setting B for that same channel. The orange dotted line is flat response,
same as if you didn’t use the Z-ROCK.
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Both EQ slopes have a fairly flat response between 20 Hz ~ 60 Hz and then it shelves
down till it reaches 260 Hz where it remains flat through the midrange and a slight roll
in the treble. This is drastically different from a “loudness button” on a vintage receiver
from the 1970’s. Those controls would simply peak the bass at 100Hz or so, and peak
the treble and while that was somewhat effective it wasn’t something that was ever
designed for audiophiles and that is why you don’t see it on any modern day hi-end
audio gear.
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Decware High Fidelity Engineering Co., East Peoria IL, USA www.decware.com
