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Using the dBZ-d
Operation of the dBZ-48d's analogue input and output sections
is entirely straightforward, and requires only correct adjustment
of the respective level controls.
Start with all the front panel rotary controls fully anticlockwise.
Connect the stereo input source(s) to IN A and IN B and the
stereo outputs to their respective amplifiers (or other signal
processing) as appropriate. With the programme material
present, rotate the input level controls until the second (+6dB)
LEDs flash on the loudest peaks, but so that the red CLIP LEDs
do not illuminate. Then rotate the output level controls for each
output channel in turn to obtain a similar display on each pair of
output LED meters.
All DSP parameters are adjustable from the front panel via the
menu system and alphanumeric display. The dBZ-48d also
provides eight memory presets enabling configurations to be
stored and recalled from the front panel.
Mono operation
The MONO buttons on the input channels should be used if the
input in question is being fed from a mono source. In this case,
the input signal may be applied to either the L or R input.
If any of the outputs are to be used in mono (e.g. with the
dBZ-48d in use as a zoner, it may not be practical for some
room areas to support effective stereo operation), the output
channel MONO buttons may be used to make an L+R sum of
the stereo input signals available at both L and R outputs of a
channel. This does not compromise the other output channels
being used as stereo, of course.
Menu System and Navigation
The dBZ-48d's DSP functions (delay time, filtering, polarity
etc.) are all controlled through the menu system, using the front
panel LCD display, rotary encoder and the three associated
push buttons.
After initial boot-up (during which the display shows the version
number of the unit's firmware), the LCD display goes to the
Home Page, shown below:
This is the display state during normal operation.
1
Using the dBZ-48d
The 'house' symbol in the display confirms that the menu
is either at the Home Page or at the top ('Home Menu')
page of one of the three submenus (see below).
The 'closed padlock' symbol indicates that the front
panel DSP controls are locked and adjustment is not
possible.
An asterisk after the Preset number indicates that the
Preset currently in use has had its stored parameters
modified, but not saved.
The menu system comprises three submenus:
• Preset submenu
• Audio submenu
• Settings submenu
To access the submenus from the Home Page, press the
rotary encoder knob (the "Enter" function) or the MENU/
UNDO button. The Preset submenu's Home Menu item is first
displayed; pressing Enter will enter the actual submenu. The
other two submenus (Audio and Settings) may be accessed in
a similar manner by rotating the encoder from the Home Menu
and pressing Enter.
To exit any of the submenus, press MENU/UNDO to return to
the submenu's Home Menu page, and MENU/UNDO again to
exit the submenus and return to the Home Page.
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