Originally posted by g1
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Grounding and reverb tanks
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LM3875 is a power amp IC. Op amps are voltage amps in the commonly used nomenclature.
In this specific case we are driving with a 5532 op amp. Not much current available.
As far as anecdotes, there are some IC drive circuits that use paralleled IC sections specifically due to the op amp limitations. But they still use no less than a B input impedance tank.
We were recently discussing solid state drive into A input impedance tanks in another thread. The only examples given used transistor current amps (push pull) to boost the op amp drive. I believe they were Yamaha and Yorkville circuits.
I suppose you could use a power amp IC and there probably are modern circuits that do so. But you will have to beef up your circuit and those chips all need heatsinking.Originally posted by EnzoI have a sign in my shop that says, "Never think up reasons not to check something."
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