PT2353H-S 데이터 시트보기 (PDF) - Princeton Technology
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PT2353H-S Datasheet PDF : 17 Pages
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Satellite + Subwoofer 3-Speaker System Electronics Crossover IC
PT2353H
FILTER
The main channel of PT2353H includes the high pass filter which is used to filter out the main
speaker’s low frequency characteristics. The filtered signal is then combined with the subwoofer low
pass filter characteristics. This High Pass Filter is of Sallen Key Type with a pass band gain equivalent
to 0dB. Adjustment of the crossover frequency is made via the two external capacitors. Please refer to
the figure below.
C
C
CL1 CL2
LOUT/ROUT
CL3
Signal
－
IN
+
REF
Subwoofer channel mixed from the Main Channel also uses the Sallen Key Type Low Pass Filter to
filter out the high frequency characteristics. Two external capacitors can be used to adjust the
crossover frequency. Please refer to the diagram below.
C1
REF
C2
SOUT
Signal
IN
The subwoofer in this 3-speaker system has only one channel output; therefore, it is recommended
that the LPF must be less than 300Hz. If the frequency is greater than 300Hz, then the audio output is
can be clearly discernible. That is, it is easy to know where the sound is coming from. The following
diagram provides the suggested crossover frequencies and respective external capacitors.
PT2353H V1.1
-8-
November, 2005
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