Hello,
I am building the Linkwitz active crossover boards and the chosen opamp is the BB OPA2134. Has anyone tried a LM6172 or LT1364 in this application? Besides for oscillation worries, which would work better?
Thanks,
Dale
I am building the Linkwitz active crossover boards and the chosen opamp is the BB OPA2134. Has anyone tried a LM6172 or LT1364 in this application? Besides for oscillation worries, which would work better?
Thanks,
Dale
I've built the Phoenix crossovers using the 2134's and they are fine.
However, one of the engineers at work recently did a shoot-out, these came second, something else (I'll find out what next week) came first due to noise performance.
However, one of the engineers at work recently did a shoot-out, these came second, something else (I'll find out what next week) came first due to noise performance.
I recently tried 2604's in a crossover design, but
I found them only marginally stable in low gain
circuits, and I went right back to discrete.
I found them only marginally stable in low gain
circuits, and I went right back to discrete.
"I recently tried 2604's in a crossover design, but
I found them only marginally stable in low gain
circuits, and I went right back to discrete." A while back Analog Devices was having a problem with their AD797s.Supposed to be unity gain stable.They weren't.Just return to the distributor and get a different date code.On a scary note I have a circuit that uses the AD842 at unity gain.This is not a unity gain stable part.About 1/3 of the date codes will actually work over temperature.Don't try this at home.
I found them only marginally stable in low gain
circuits, and I went right back to discrete." A while back Analog Devices was having a problem with their AD797s.Supposed to be unity gain stable.They weren't.Just return to the distributor and get a different date code.On a scary note I have a circuit that uses the AD842 at unity gain.This is not a unity gain stable part.About 1/3 of the date codes will actually work over temperature.Don't try this at home.
Tried the lm6172 they seem to be working fine.
If I were to do it over I would buy something else, definitely something cheaper.
If I were to do it over I would buy something else, definitely something cheaper.
Tried the LM6172 in my CDP (i/u conv. + filter) and found it much better sounding than the opa2134 if it is stable.
Here my personal ranking (tested in outputstage, gain 10):
😡 Standard: NE5532, JRC...
🙁 For Beginners: OPA2604
😉 Better: OPA2134; OP275
🙂 Premium: OPA2132
😀 State of the Art: LM6172, OPA627/637, AD797 (the latter three are single opamps)
Here my personal ranking (tested in outputstage, gain 10):
😡 Standard: NE5532, JRC...
🙁 For Beginners: OPA2604
😉 Better: OPA2134; OP275
🙂 Premium: OPA2132
😀 State of the Art: LM6172, OPA627/637, AD797 (the latter three are single opamps)
<a href="http://fnt-www.ss.titech.ac.jp/~hajime/uec/distortion/opa.html"> here</a> is a japanese site that has distortion/FFT plots of lotsa opamps, the AD797 measured great.
Regards
James
Regards
James
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