dbx Pro 260 - Manual (Page 38)

Detailed Parameters
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Section 4
DriveRack ™
DriveRack™ User Manual
Section 4
is replaced where a new feedback is detected and notched out. This mode is useful because
feedback frequencies may change as the microphone is moved, and/or as the characteristics of
the venue change. Note- Only the fixed filter settings will be stored with the new program.
Type - Speech, Low Music, Medium Music and High Music
If Fixed or Live mode is chosen, the text will read “Type.” The options will be Speech, Music
Low, Music Medium and Music High. These types pertain to the Q, sensitivity, and algorithm
type. Values are; Speech (Bandwidth = 1/5 octave and Q=7.25) Music Low (Bandwidth = 1/10
octave and Q=14.5) Music Medium (Bandwidth = 1/20 octave and Q=29) Music High
(Bandwidth = 1/80 octave and Q=116). Note: To guarantee that feedback is suppressed at lower
frequencies, the AFS may place wider notch filters at these lower frequencies (below 700 Hz).
Number Fixed - 0-12
This will range from values 0-12. The total number of filters will stay at 12, and the number of
live filters will be = Total Num Filters – Num Fixed. If this is changed before the filters are
reset, then the filters will be reset one by one as the number changes. For example, if the num-
ber of Fixed filters goes down, then the last fixed filter set will be reset. Likewise, if the num-
ber of Fixed filters goes up (and thus the number of live filters goes down), then the last live
filter set will be reset. The Fixed/Live filter usage will be indicated at the bottom of each page
of the feedback elimination effect. ‘F’ indicates an available fixed filter, and ‘L’ indicates an
available live filter. A blocked out F or L indicates a filter that is set, or in use.
Live Filter Lift (On/Off)
This parameter turns the Live Filter Lift on and off.
Lift After - 5 sec to 60 min
This parameter allows the user to setup the box so that the Live filters will automatically be
removed after a set time (as indicated by the "Lift After" parameter). It ranges from 5 seconds
to 60 minutes. This feature is useful if the microphone being used is moved or the characteris-
tics of the venue change over time. As example; a filter placed minutes ago will not be present-
ly preventing feedback. This feature removes unnecessary filters from the spectrum to increase
sonic quality. If the feedback is still there (after the filter is removed), it will catch it and notch
it out the same.
Total Number of Filters 1-12
This parameter selects the number of filters being used
The Subharmonic Synthesizer module has been specifically optimized to enhance Bass audio
material for use in a variety of professional applications, including nightclub and dance DJ mix-
ing, theatre and film sound, music recording, live music performance and broadcasting.
The Subharmonic Synthesizer module’s two separate bands of subharmonic synthesis provide
the best combination of smoothness and control, and the independent low frequency boost cir-
cuit is designed to get the most out of high-performance low frequency speaker systems.
Sub-Harmonic Synth - On/Off
Turns the Subharmonic Synth module on and off.
Sub-Harmonics Synth - 0 to 100%
This parameter sets the overall level of the Subharmonic Synthesizer.
4.3 Subharmonic Synthesizer