I greet everyone
two questions, the first concerns capacitors. which one is best to use in electronic crossover filters currently.
second question what to choose between AD823 and OPA2132 always for electronic cross, also at the same price there is something better?
Hello everybody
two questions, the first concerns capacitors. which one is best to use in electronic crossover filters currently.
second question what to choose between AD823 and OPA2132 always for electronic cross, also at the same price there is something better?
Hello everybody
AD823 is good for active filters.
Something better can be LM4562.
OPA2132 is too expensive and doesn't worth its money.
Something better can be LM4562.
OPA2132 is too expensive and doesn't worth its money.
AD 823 VS OPA2132
LM 4562 is superior to the OPA2132 are you sure?
LME49720 I threw them in the trash together with the LM4562 in crossover use.
OPA 2132P I do not find it suitable as it gives a warm sound while AD 823 is 100% neutral without counting the sharpness and also the detail.
I repeat are you sure of your statements
LM 4562 is superior to the OPA2132 are you sure?
LME49720 I threw them in the trash together with the LM4562 in crossover use.
OPA 2132P I do not find it suitable as it gives a warm sound while AD 823 is 100% neutral without counting the sharpness and also the detail.
I repeat are you sure of your statements
Just swapped in some 49720s for the existing OPA2134s in a LR 24dB crossover in my mancave system, and they do sound more detailed to my ears.
As I managed to understand people mostly operate objective parameters on this forum. And objectively LM4562 is better then OPA2132/2134, surely.
For capacitors in analog filters choose PP, PTFE or PPS. For surface mount PP isn't available (it melts), but PPS is very temperature resistant and is available in SMT. If you are less fussy mylar (PKT) is available. Of the ceramic types only NP0 (aka C0G) is acceptable in a filter circuit, the others are way too non-linear and microphonic.
Finding 2% or better tolerance is an issue - designs using lots of the same value capacitance can be subject to value-matching by hand for each filter.
Using several caps in parallel can both allow more different values to be created, and improve the tolerance (2 caps in parallel has sqrt(2) better tolerance, in theory, if similar values).
Finding 2% or better tolerance is an issue - designs using lots of the same value capacitance can be subject to value-matching by hand for each filter.
Using several caps in parallel can both allow more different values to be created, and improve the tolerance (2 caps in parallel has sqrt(2) better tolerance, in theory, if similar values).
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