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2211
© 2004 Directed Electronics, Inc
SUBSONIC FILTER ADJUSTMENT (D2205 ONLY)
This amplifier incorporates a subsonic filter
to maximize the performance of a
subwoofer. The subsonic filter is a high pass
filter that removes unwanted bass output
at very low frequencies from the woofer.
This increases the output of a subwoofer by
as much as 3 dB by increasing the mechan-
ical power handling of the subwoofer.
Depending on the type of enclosure the
subsonic filter can increase the useable low
frequency output by an additional 10 dB!
Acceptable boost levels are determined by
the type of enclosure used, wattage of the
amplifier, and the woofer’s excursion capa-
bility.
The following guidelines should be used
for proper set-up of the subsonic filter to
provide optimum performance and relia-
bility from your system.
CEA SPECIFICATIONS
AA880022
Power Output: 150 Watts RMS X 2 Channels at 4 Ohms and <
1% THD+N
Signal to Noise Ratio: 76 dBA (reference 1 Watt into 4 Ohms)
Additional Power: 200 Watts RMS X 2 Channels at 2 Ohms <
1% THD+N
AA11000044
Power Output: 90 Watts RMS X 4 Channels at 4 Ohms and <
1% THD+N
Signal to Noise Ratio: 81 dBA (reference 1 Watt into 4 Ohms)
Additional Power: 125 Watts RMS X 4 Channels at 2 Ohms <
1% THD+N
D2205
Power Output: 80 Watts RMS X 4 Channels at 4 Ohms and < 1% THD+N
280W RMS X 1 Channel at 4 Ohms <
1% THD+N
Signal to Noise Ratio: 80 dBA (reference 1 Watt into 4 Ohms)
Additional Power: 125 Watts RMS X 4 Channels at 2 Ohms <
1% THD+N
Additional Power Subchannel: 600 Watts RMS X 1 Channel at 1 Ohm <
1% THD+N