While searching for design information on classD amp, I came across this information hosted on national.com.
Audio Fundamentals Course 5 - All About Class D Audio Amplifiers
In the link they have given equation for solve the values for L & C for the given RL.
I have put them on mathcad sheet. There if found discrepancy in results.
The equation they have mentioned for finding L & C don't get the same frequency when verified using the mentioned equation.
wondering whats going wrong.
Attached the pdf of mathcad results.
Audio Fundamentals Course 5 - All About Class D Audio Amplifiers
In the link they have given equation for solve the values for L & C for the given RL.
I have put them on mathcad sheet. There if found discrepancy in results.
The equation they have mentioned for finding L & C don't get the same frequency when verified using the mentioned equation.
wondering whats going wrong.
Attached the pdf of mathcad results.
Attachments
I am still seeing lot of confusion.
got another site ,http://www.eetimes.com/design/audio-design/4015847/Understanding-output-filters-for-Class-D-amplifiers
THe equation seems ok here. even with Q calcualtions.
But the simulation of graph do not agree with this. it shows small bump. so the Q must be more than 0.707
got another site ,http://www.eetimes.com/design/audio-design/4015847/Understanding-output-filters-for-Class-D-amplifiers
THe equation seems ok here. even with Q calcualtions.
But the simulation of graph do not agree with this. it shows small bump. so the Q must be more than 0.707
Last edited:
Sound check, I agree with you.
Each speaker must have zobal network connected to each driver. and so calculated. Speaker Zobel / Impedance Equalization Network Circuit Calculator
Each speaker must have zobal network connected to each driver. and so calculated. Speaker Zobel / Impedance Equalization Network Circuit Calculator
...probably it requires a Zobel in front of each driver, similar as it's done with Tube amps
...best would be to run active setups with perfect amp/driver alignment
and no crossover in between
...then. What's actually in for us if we'd put that much effort into such a project?? Do we really gain that much?
...best would be to run active setups with perfect amp/driver alignment
and no crossover in between
...then. What's actually in for us if we'd put that much effort into such a project?? Do we really gain that much?
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