8
Speaker Configuration & Channel Selection Image: This section with speaker images and vehicle
positions represents the settings made in its pull-down menu that provides pre-set speaker
configurations as well as any manual changes made to speaker output type made in section ④. The
currently selected output channel in section ④ will highlight the associated speaker image/location.
Source Select:
‚ This section provides for direct selection of the input source. The currently selected
source name will be highlighted. The default source selection is high level input (MAIN). To change
source without the PC software connected, the optional DRC is required.
Input channel settings: This section provides a quick method for setting the input channel routing as
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2CH, 4CH, 6CH or MIX (3-way sum). To make further changes to input signal routing to individual
channels, use the adjustments in section ④.
Input Channel Routing, Output Channel Assignment and Pink Noise Generator:
„ In this section, all
signal routing and channel assignments can be made for each individual channel, or if channel pairs
linked, as well as generate pink noise to the selected outputs for the purpose of tuning the vehicle
acoustically with an RTA or audio spectrum analyzer.
cont
ŸFor input signal routing, the drop down tabs under the INPUT column ain selections for FL, FR, RL,
RR, Sub L, Sub R channels connected to the high-level input . input channel harness Any can be
assigned to from any output channel, or mixed (summed) for the purpose of creating full-range signals
2-way or 3-way factory signals, a mono signal for center or sub, or creating a non-faded generating
output by summing front and rear signals.
For output channel assignment, use the drop down tabs under the OUTPUT column. Selecting a
Ÿ
particular channel output assignment is for the purpose of master volume and sub volume control
from the PC software or optional DRC. Assignments can be made in any order except for CH7/8, which
are the only channels assignable as subwoofer and controlled by the sub volume adjustment.
Therefore, while the SDSP6 has 6-channels of powered outputs (CH1/2, CH3/4, CH7/8), its preouts
(CH5/6) are not assignable as subwoofer channels. See pg.9 for an example of using the SDSP6 with an
external mono amplifier. For the SDSP8 with 8-channel of powered outputs, where CH7/8 may be
assigned as the subwoofer channels, any sub level adjustment will also affect the CH7/8 preouts.
ŸFor speaker type, each available choice provides a pre-set crossover that will be applied for the
purpose of initial protection until full system adjustment is made. Any crossover can be adjusted
manually afterward in section ⑤ or from the graph in section ⑨.
ŸFor convenience in making acoustic measurements, a pink noise generator is available for each output
channel under the TEST column. When activated, the input signal is temporarily bypassed to provide
pink noise from the selected output channels.
Crossover Type and Frequency: This section is for selecting crossover type and frequency for the
…
currently selected channel in section ⑦. Crossover type is selectable as OFF, HP, LP or BP, which activates
both HP and LP crossovers simultaneously as a bandpass. Cut-off frequency can be entered manually in
the numerical boxes or the sliders in this section, as well as via the graph in section ⑨.
Filter Model and Crossover Slope: In combination with the crossover type and frequency adjustments
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in section ⑤, this section allows selection of filter model (Linkwitz, Bessel or Butterworth) for the
currently selected channel in section ⑦, each of which provides a different filter Q, slope options and
associated phase response. Note that slopes not available for the currently selected filter model are
highlighted in light gray, while available slope choices are in dark gray.
Master Volume, Sub Volume and Channel Trim Levels: When the GAIN button is selected, volume and
‡
trim levels will appear in this section. The master volume slider is for adjusting output volume of all
channels together, while the sub volume will only affect CH7/8 relative to the master volume up to
+12dB (if assigned as such in section ④. Volume adjustments may also be made via the optional DRC
when not connected to the PC software. The individual channel trims are for adjusting each channel’s
output level relative to the other channels for the purpose of tuning the system with the connected
speakers in the vehicle.
Time Delay and Phase: When DELAY is selected in section ⑦, this section will replace it on the screen
ˆ
for adjusting time delay and phase for each channel. Delay increments can be chosen as time in
milliseconds (MS) or as distance in centimeters (CM) or inches (INCH). After adjusting for imaging with
individual channels, note that channels can be linked for adjusting together while keeping their
individual delay settings, simplifying tasks such as delaying main speakers relative to subwoofer(s) in
order to achieve up-front bass and better staging. Phase allows polarity of individual channels to be
flipped without affecting delay settings.
Parametric EQ and Frequency Response Graph: This section contains 31 bands of parametric EQ
‰
adjustments for each output channel, as well as providing a visual representation of all crossover and
PEQ settings. The boost/cut, frequency and Q (width) of each PEQ band can be set by the sliders, while
boost/cut and frequency can also be dragged by mouse on the graph for adjustment. Channel select
buttons on the right side can show individual channels or multiple channels overlaid simultaneously.
Preset Read/Write: Up to 8 presets can be saved (WRITE) to the POS1-POS8 buttons, where they can be
Š
loaded from memory (READ) to override current DSP and PC software settings. Note that master volume
and sub volume are not saved to presets and will be overridden if remote control from the DRC is used.
Also note that all presets will be saved in the *.DSP6-8Set program file if saved to the PC under the file
menu at the top left corner of the screen.
