Very strange HP Passive network for TAD 4001 - diyAudio
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Old 29th May 2005, 10:49 AM   #1
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Default Very strange HP Passive network for TAD 4001

The following High-Pass passive network for TAD 4001 use a 2.7uF capacitor. Any one know the effects of this capacitor? Thanks in advance.
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Old 29th May 2005, 12:27 PM   #2
soongsc is offline soongsc  Taiwan
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This is normally used to reduce HF impedance so that high frequency is balanced. Just a guess!

Any other comments?
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Old 29th May 2005, 12:38 PM   #3
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Likely to lift the upper end
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Old 29th May 2005, 03:04 PM   #4
GM is offline GM  United States
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Greets!

Right, this is a HF bypass cap to 'lift' up the HF to counteract the shelving due to the series resistance. Standard CD horn EQ.

GM
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Old 29th May 2005, 03:50 PM   #5
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Thanks GM,Feyz,Soongsc!!
Is there any formula to calculate the frequency where lifting begin and the values of capacitor?
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Old 30th May 2005, 01:47 AM   #6
soongsc is offline soongsc  Taiwan
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I would recommend using a simple SPICE program to do some simulation, and just look at the results.
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