From: Robert C. <rsc...@be...> - 2015-07-07 14:38:04
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Hi, With apologies for posting a series of total novice questions… I’m am getting some error messages when running an AC sweep simulation in the attached audio crossover. > Errors: > ------- > > WARNING: AC1: inserted virtual resistance at node `Vin' connected to [C1,L1,V1] > WARNING: AC1: inserted virtual resistance at node `HiPassVout' connected to [R2,C1] > WARNING: AC1: inserted virtual resistance at node `LoPassVout' connected to [R1,L1] I’m not sure if this is because of the way I have configured the schematic, or something else. Also, the db vs freq output graphs are not quite what I expected. This should be a 6 db/octave crossover for both bands. I’ve set some math to catch the frequencies for -3 and -9 db of each band of the output. Neither band is actually close to an octave displacement for the 6 db change. I’m attaching the schematic file. Any suggestions would be appreciated. regards, rob |