dbx DriveRack PA2, Руководство пользователя

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Parametric EQ (AutoEQ, HIGH, MID, LOW PEQ)
There are two types of PEQs available in the PA2: the AutoEQ PEQ and the output PEQs (labeled LOW, MID, and HIGH).
The AutoEQ PEQ is an 8-band parametric EQ which resides in the input processing side of the PA2 (pre crossover) and
is automatically adjusted by the built-in AutoEQ Wizard. In most cases you will likely just look at the settings in the AutoEQ
PEQ to see how the system was equalized after running the AutoEQ Wizard. However, you can go into the AutoEQ PEQ and
manually adjust the settings if desired.
The 8-band HIGH, MID, and LOW PEQs reside in the output processing side of the PA2 (post crossover) and were designed
to be used exclusively for speaker tunings. In a perfect world, your loudspeaker drivers would exhibit ultra-flat frequency
response (what you put in, you get out). Unfortunately, loudspeaker drivers don’t have extremely flat frequency response by
design and require some help to achieve a more flat frequency response. The output PEQs allow you to compensate for this
fact and improve the frequency response of the loudspeaker system, before taking the room into account.
When you select your main and sub speakers in the Setup Wizard, the output PEQs will automatically be adjusted. By applying
speaker tuning EQ, loudspeaker frequency response can be improved. Keep in mind that selecting some speaker models in the
Setup Wizard won’t set any parametric EQ settings, so don’t be alarmed if you selected your speakers in the Setup Wizard and
no PEQ settings were set. These output PEQs can also be adjusted, so you can manually enter speaker tuning parameters if
your speakers aren’t listed and speaker tuning data sheets are available for your speaker models.
PEQ Parameters
The PEQ menus can be accessed by pressing the
PEQ
button. You will see a list of the available PEQs to select from. Which
options are available in the list will depend upon the current configuration. In all cases you will at least see the AutoEQ PEQ
and HIGH PEQ (PEQ for the HIGH outputs). If you’ve configured a 2-way system, you will also see a LOW PEQ for the LOW
outputs. If you’ve configured a 3-way system, you will see an additional MID PEQ for the MID outputs. Turn then press the
DATA
wheel to select the desired PEQ module. Turn the
DATA
wheel to scroll through the list of parameters. Press the
DATA
wheel to edit a selection. When in the PEQ menu, pressing and holding the
PEQ
button for approximately 2 seconds will
advance to the next active PEQ module from the list, wrapping around through the available modules.
•
AutoEQ, HIGH, MID, or LOW PEQ
[ON, OFF]
Turns the selected PEQ module on or off.
•
FLATTEN
[RESTORE, FLAT, MANUAL, AUTOEQ (AutoEQ Only)]
This parameter has two options in the output PEQs: RESTORE and FLAT. Select the FLAT option to zero out the selected
PEQ (set all bands to 0 dB). Select the RESTORE option to retrieve the settings you had before you selected the FLAT
option. Note that you can only restore PEQ settings as long as you do not power cycle the PA2 or load another preset.
The AutoEQ PEQ provides three options: FLAT, MANUAL, and AUTOEQ. Select the FLAT option to zero out the AutoEQ
PEQ (set all bands to 0 dB). The MANUAL option shows any manual adjustments you have made to the AutoEQ PEQ – if
you haven’t made any, the PEQ will be flat when the MANUAL option is selected. Select the AUTOEQ option to get back to
the PEQ settings that were set when you ran the AutoEQ Wizard.
•
BAND(1-8) TYPE
[BELL, LOW SHELF, HIGH SHELF]
This parameter selects the PEQ filter type. Use the BELL type to edit a range of frequencies, the LOW SHELF type to edit
all frequencies below a specified frequency, or the HIGH SHELF type to edit all frequencies above a specified frequency.
Each band (1-8) allows you to select between these three band type options, so any band can be a bell or shelving type
filter.