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12 ULTRAGAIN PRO MIC2200 User Manual
5.4 The ULTRAGAIN PRO’s parametric equalizer
In contrast to graphic equalizers with their xed frequencies and qualities,
parametric EQs allow for setting all lter parameters, such as center frequency,
bandwidth and amplitude.
The possibility of determining both the bandwidth and center frequency as well
as frequency boost/cut adds a new dimension to your EQ applications. The high
precision of the state-variable lter used in the ULTRAGAIN PRO enables you to
ne-tune frequencies and process your audio material in such a creative way that
has been impossible up to now. The frequency-selection feature allows you to
process the entire audio range from 20 Hz to 20 kHz.
Parametric equalizers can be used both as separate signal processors and in
combination with conventional 1/3-oct. equalizers, for example, in a sound
reinforcement system: while the 1/3-oct. equalizer does the “rough” correction
of the overall frequency response, the ULTRAGAIN PRO could be used to ne-tune
the sound.
“Notching out” specic interference frequencies and narrow-band resonances
(uncontrolled frequency peaks) is one of the ULTRAGAIN PRO’s major tasks:
by tuning the EQ in to the precise trouble frequency, interference such as hum
and noise caused by air conditioners, etc. can be eliminated without aecting
adjacent frequency ranges. Basic acoustic problems usually encountered in
studios and stage systems can be solved elegantly with the ULTRAGAIN PRO.
It has proven useful in practice to start with all controls set to mid-travel position
and the EQ IN/OUT switch set to OUT, so as to avoid even before powering up
the system that applied input signals with high amplitudes are raised in level
by the ULTRAGAIN PRO and hence lead to distortion or damage in subsequent
devices or speakers, or to annoying feedback in P.A. systems caused by improper
basicsettings.
Once the lter curve of your choice has been set, it can be necessary to correct
the overall level. If the lter setting used raises the overall level, you can use the
OUTPUT control to lower it again and avoid possible distortion.
When the overall level is lowered by the lter setting, the OUTPUT control
allows for raising it by a maximum amount of +20 dB. Use the EQ IN/OUT switch
for a direct A/B comparison, so that you can estimate the required amount of
levelcompensation.
5.5 The ULTRAGAIN PRO as a tube interface
In your daily studio work, the ULTRAGAIN PRO can be used for a variety of
applications that provide subtle sound enhancement. For example, it gives
percussion instruments more “punch”, or improves the transparency of other
instruments, particularly those rich in upper harmonics. The source material
is enriched in sound volume and brilliance. Enhanced “depth” makes it easier
to locate individual instruments. Vocal sounds gain in presence and volume,
without masking other instruments. Thus, voices become a more integral part of
the overall mix. Synthetic sound, especially MIDI guitar sounds become more real
and natural than without the ULTRAGAIN PRO. So, with the ULTRAGAIN PRO you
can adopt a more active approach during the mix-down process and work out
subtleties, while focusing particularly on the musical aspects of your recordings.
For this purpose, connect the device to the insert points on your mixing console
or recording/playback machine, and operate the ULTRAGAIN PRO in LINE mode.
Ifyou wish to use the tube function only, make sure that all PHASE REV., LO CUT
and EQ IN/OUT switches are OUT. Set the OUTPUT control to mid-travel position
and enjoy the “warmth” of pure tube sound.
6. Specications
Audio Input
Microphone
Connectors XLR
Type transformerless, DC-decoupled input
Impedance 3 k Ohms balanced
Maximum input level +10 dBu balanced and unbalanced
CMRR typ. 40 dB, >55 dB @ 1 kHz
Line
Connectors XLR and ¼" jack
Type transformerless, DC-decoupled input
Impedance 60 kOhms balanced
Maximum input level +23 dBu balanced and unbalanced
CMRR typ. 40 dB, >55 dB @ 1kHz
Audio Output
Connectors XLR and ¼" jack
Type electronically servo-balanced
outputstage
Impedance 60 Ohms balanced,
30 Ohms unbalanced
Maximum output level +21 dBu balanced and unbalanced
System Specications
Frequency response 10 Hz to 200 kHz, +/- 3 dB
Noise >94 dBu, unweighted, 22 Hz to 22 kHz
THD 0.011% typ. @ +4 dBu, 1 kHz, Gain 1
IMD 0.01% typ. SMPTE
Crosstalk <-88 dB, 22 Hz to 22 kHz
Function Controls
Mic gain variable (+10 dB to +60 dB)
Frequency (lo cut) variable (12 to 320 Hz)
Frequency (PEQ) variable (10 Hz to 20 kHz),
dependent on x 10 and x 0.1 switch
Bandwidth variable (0.03 to 2 octaves)
Level variable (-15 dB to +15 dB)
Output variable (-20 dB to +20 dB)