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Old 18th January 2012, 04:45 PM   #41
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Hi, all!
Is there a difference between the feedback in this amplifier made ​​with resistors: [(200k/10k) +1, and [(20k/1k) +1], if there is in what?
thank you
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Old 18th January 2012, 05:24 PM   #42
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higher value resistors have more noise. and the lower input "gain" resistor will also reduce phase distortion caused by input capacitance.

I dont know if it would be enough make any audible difference though, i never tried different values than the recommended ones.
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Old 14th August 2012, 03:17 AM   #43
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where can I find the schematic for the amp.
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Old 17th August 2012, 01:33 PM   #44
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got it. the link has changed, its at Speaker Amplifier and Modulator - Mid/High-Power Amplifier - LM1875 - TI.com. searching at national site takes me to a ti page
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