PLD Series Amplifiers
17
Application Guide—Portable PA
Rev. E, Apr. 2015
Factory Preset
Display
Description
F7
Channels A, B,
and C parallel; D
separate
Suitable for a high-power 2
Ω
full-range loudspeaker load and a
separate full-range loudspeaker load of any impedance 2
Ω
or
higher.
Input 1 goes to the parallel channels A, B, and C; Input 4 goes to
channel D.
F8
Channels A and
B parallel, bridged
with channels C
and D parallel
Suitable for a high-power 4–8
Ω
(or higher) full-range loudspeaker
load.
Use Input 1.
F9
Channels A, B, C,
and D parallel.
Suitable for a high-power 1
Ω
(or higher) full-range loudspeaker
load.
Use Input 1.
F10
Four separate chan-
nels, all full range
This is the same as F1.
Input 1 goes to channel A; Input 2 to channel B; Input 3 to chan-
nel C; and Input 4 to channel D.
F11
Dual bi-amp mode:
Channel A LF plus
channel B HF;
channel C LF plus
channel D HF
This preset uses all four output channels separately, with these
input and DSP settings:
• Input 1 feeds channels A and B; input 2 feeds channels C and
D.
• The crossover filter parameters are 1.5 kHz Butterworth, with
slopes of 48 dB/octave.
These parameters are only a starting point; you can alter any of
them and save the configuration into a user preset.
F12
Channels A and
B bridged for
4–8
Ω
subwoofer;
channels C and D
separate full range
This is similar to F3, with these additions:
• Channels A and B are bridged, with a 48 dB/octave Butter-
worth low-pass filter at 80 Hz. The signal is summed from
inputs 1 and 2.
• Channels C and D are separate, suitable for stereo mains, with
48 dB/octave Butterworth high-pass filters at 80 Hz, which
perfectly complements the subwoofer filtering in A and B.
Channel C’s signal is from input 1 and D’s is from input 2.
These parameters are only a starting point; you can alter any of
them and save the configuration into a user preset.
