gml gml8200 Manual De Usuario
The GML Model 8200 Series II Parametric Equalizer offers astonishing precision and
sonic accuracy when sculpting the response of any source. Its operational
characteristics have been honed through many years of use in the most critical
recording and mixing situations and have proven both reliable and amazingly
accommodating.
sonic accuracy when sculpting the response of any source. Its operational
characteristics have been honed through many years of use in the most critical
recording and mixing situations and have proven both reliable and amazingly
accommodating.
The basis of the parametric design topology, in general, specifies control over not only
gain or attenuation, but also over both frequency and “Q” factor in multiple user-defined
bands. In the case of parametric equalization, “Q” is defined as the center frequency of
the alteration (whether gain or attenuation) divided by the bandwidth of that alteration. It
follows, then, that low values of “Q” affect a wide range of frequencies around the cut or
boost, while high values of “Q” specify a narrow slope around the center frequency.
gain or attenuation, but also over both frequency and “Q” factor in multiple user-defined
bands. In the case of parametric equalization, “Q” is defined as the center frequency of
the alteration (whether gain or attenuation) divided by the bandwidth of that alteration. It
follows, then, that low values of “Q” affect a wide range of frequencies around the cut or
boost, while high values of “Q” specify a narrow slope around the center frequency.
Another important aspect of true parametric equalization, as embodied in the Model
8200, is the existence of overlapping frequency bands, which provide great precision
and flexibility.
8200, is the existence of overlapping frequency bands, which provide great precision
and flexibility.
Specifically, the 8200 provides complete control over a wide frequency range and “Q”
setting, along with 15 dB of cut or boost on five individual bands, with the front panel
controls for frequency and “Q” mounted concentrically. The addition of the “Q”
characteristic represents the foremost advance in equalizer technology since the
invention of the transistor as a replacement for bulky and noisy vacuum tubes, and
empowers the user to maintain precise and musical control over the tonal attributes of
the spectrally processed signal.
setting, along with 15 dB of cut or boost on five individual bands, with the front panel
controls for frequency and “Q” mounted concentrically. The addition of the “Q”
characteristic represents the foremost advance in equalizer technology since the
invention of the transistor as a replacement for bulky and noisy vacuum tubes, and
empowers the user to maintain precise and musical control over the tonal attributes of
the spectrally processed signal.
(Graphical representation of the Q characteristic and gain steps
may be found in Appendix A of this manual.).
The availability of up to 15 dB of gain or attenuation is significant in the audio world,
since most contemporary equalizers offer at most 12 dB of cut or boost, and usually not
over such flexible overlapping multiple bands. Thus, it is possible to achieve any
particular “sound” that is desired, no matter if the goal is a subtle alteration or an audible
coloration effect.
since most contemporary equalizers offer at most 12 dB of cut or boost, and usually not
over such flexible overlapping multiple bands. Thus, it is possible to achieve any
particular “sound” that is desired, no matter if the goal is a subtle alteration or an audible
coloration effect.
Front panel controls on the Model 8200 Series II Parametric Equalizer include an
illuminated in/out pushbutton switch for each channel, five color-coded bands per
channel with amplitude and dual-concentric frequency and "Q" potentiometers, plus a
power indication LED. The amplitude pots are continuously variable between +15 dB
and -15 dB, with highly accurate 0 dB settings. Each band offers a wide array of
frequencies to select on the outer knob of the dual-concentric potentiometer, with a
good deal of overlap between bands to accommodate almost any combination of cuts
and boosts. The Low and High bands offer counter-clockwise detents for shelving
curves in addition to the variable "Q" values from 0.4 to 4 found in the other three
bands--all on the central knobs of the dual-concentric potentiometers. Frequency
markings can be found along the inner, larger ring of numbers, while the outer, smaller
numbers encircling the dual-concentric potentiometer denotes "Q" value.
illuminated in/out pushbutton switch for each channel, five color-coded bands per
channel with amplitude and dual-concentric frequency and "Q" potentiometers, plus a
power indication LED. The amplitude pots are continuously variable between +15 dB
and -15 dB, with highly accurate 0 dB settings. Each band offers a wide array of
frequencies to select on the outer knob of the dual-concentric potentiometer, with a
good deal of overlap between bands to accommodate almost any combination of cuts
and boosts. The Low and High bands offer counter-clockwise detents for shelving
curves in addition to the variable "Q" values from 0.4 to 4 found in the other three
bands--all on the central knobs of the dual-concentric potentiometers. Frequency
markings can be found along the inner, larger ring of numbers, while the outer, smaller
numbers encircling the dual-concentric potentiometer denotes "Q" value.
OPERATION