Z e c k
G r aphic E q u a l i z e r
GF 215 (2 x 15 band)
GF 230 (2 x 30 band)
Dear customer,
thank you very much for purchasing a Zeck graphic equalizer.
This professional unit provides you with a powerful sound sha-
ping tool for all possible audio applications such as PA
systems, recording, home stereo, broadcasting and much
more.
The GF 215 is a 2 x 15 band equalizer in a 19" package using
two rackspace height units, while the GF 230 offers 2 x 30
bands in three height units. The center frequencies have been
specified according to the ISO standard and the high-resolution
45mm faders allow the units to be adjusted to any desired fre-
quency curve with precise accuracy. Making use of sophistica-
ted technology, including laser-trimmed bandpass modules and
multiple summing-point circuitry, phase irregularities between
the frequency bands are reduced to a minimum. All Zeck GF
equalizers feature professional 'Constant Q' filter technology,
where the bandwidth remains the same throughout the entire
boost/cut range of one fader. Unlike most other equalizers,
which utilize the simpler 'variable Q' filter design, the GF equali-
zers display an extremely low ripple when all faders are at their
maximum position. Outstanding technical specifications allow
the units to be used in conjunction with highest quality audio
equipment.
To get the most out of your new equalizer, please study the
following instructions carefully.
The Zeck team
Contents:
1. Quick reference
2. Connecting the GF equalizer with other audio equip-
ment
3. Control elements
4. Using the GF equalizer
5. Troubleshooting guidelines
6. Technical specifications
7. Accessories
GF equalizers owner's manual
12
owner`s manual GF equalizers © 1994 Zeck Audio
