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PT2389 Datasheet(PDF) 11 Page - Princeton Technology Corp

Part # PT2389
Description  5-Mode Preset Equalizer IC with Bass Booster & 3D Effect
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Manufacturer  PTC [Princeton Technology Corp]
Direct Link  http://www.princeton.com.tw
Logo PTC - Princeton Technology Corp

PT2389 Datasheet(HTML) 11 Page - Princeton Technology Corp

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Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
PT2389 V1.5
- 11 -
July, 2006
5-Mode Preset Equalizer IC with Bass Booster & 3D Effect
PT2389
TREBLE AND BASS ADJUSTMENT
It is general knowledge that different individuals have different listening preferences. The application
circuit of PT2389 included in this specification has been designed for the taste general listening public;
however, you can make the necessary adjustment to suit your personal taste. Please refer to the
sections below.
TREBLE ADJUSTMENT
The Treble adjustment is made by changing the value of the 2 capacitors connected between
TL -- OUTL pins and TR -- OUTR pins. Please refer to the diagram below.
As the capacitor value becomes bigger, the treble of the gain frequency curve is shifted down.
Likewise, as the capacitor value becomes smaller, the treble gain frequency curve shifts the opposite
direction. Referring to the diagram above, we see that at 8dB, different capacitor values exhibit
different frequency responses. Capacitor value 1800 pF has a lower frequency gain response than
1200 pF capacitor.
Hz
TL – OUTL Capacitors vs. Frequency Response
Note:
1200pF
1500pF
1800pF
1800pF
1500pF
1200pF


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