YSS906 데이터 시트보기 (PDF) - Yamaha Corporation

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YSS906

ASR2P Analog Surround

Yamaha Corporation 

YSS906

2. Determination of capacitance and resistance for Tone Control function

Tone level change vs. frequency characteristics are as follows when the resistance and capacitance are used as

parameters.

C

Ra

VR Ra

TAL

+-

TBL

Bass control circuit

AOL

L-OUT

higher

[dB]

+

higher

Variance

[dB]

VR/Ra ratio

+

C

lower

lower

Variance

Frequency

Frequency

-

-

When Ra and VR are fixed and C is changed

When C is fixed and VR/Ra ratio is changed

-------------------------------------------------------

VR

TAL

TBL

+-

C

Rb

Treble control circuit

AOL

[dB]

+

higher

Variance

L-OUT

[dB]

+

lower

C

Variance

Frequency

higher

Ra/Rb ratio

lower

Frequency

-

-

When Rb and VR are fixed and C is changed

When C is fixed and Ra/Rb ratio is changed

Ra is the resistor shown in the "Bass control circuit diagram"

The range of level change is recommended to be +/-10 dB as a standard, and to be +/-15 dB or less.

3. Designing boards and selecting components

Designing the boards that include YSS906 requires no special care. Selection of components to be used with the

device can be made in the same way as normal audio circuits. Use of ceramic capacitors is not recommended for

pseudo-stereo, Wide Surround and tone control because of their thermal characteristics. Polyester film (Mylar)

capacitors are recommended for this purpose.

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