what would happen if i would use one opamp for hot , one for cold . and pass signal without conversion to unbalanced . would this defeat purpose of balanced signal?
Look at an instrumentation amplifier.
It too uses the two input opamps as Buffers and then uses the third opamp to sum the signals.
Alternatively look at Putzeys' Gword article.
It goes a bit further.
And Finally look at Whitlock's Genius circuit, now available from THAT.
It too uses the two input opamps as Buffers and then uses the third opamp to sum the signals.
Alternatively look at Putzeys' Gword article.
It goes a bit further.
And Finally look at Whitlock's Genius circuit, now available from THAT.
one more question, i had thought about this a lot.sorry for wasting your time. in case that there is some part of equipment let say active crossover or preamp/eq that adds its own distortions to signal, could we make that there is actualy two separate crossovers for both hot and cold ,with opamps referenced to ground, and avoid opamps distortions and noise in simmilar manner like we avoid cable distortions and noise ? thank you for answer
Read the Gword.
He has a balanced receiver and converts to unbalanced to operate the vol pot and then converts back to balanced.
You replace the vol pot with the crossover.
Doing anything else is far too complicated.
Even Putzeys has gone bal-unbal-pot-bal because trying to do vol pot as balanced is just too much complication.
He has a balanced receiver and converts to unbalanced to operate the vol pot and then converts back to balanced.
You replace the vol pot with the crossover.
Doing anything else is far too complicated.
Even Putzeys has gone bal-unbal-pot-bal because trying to do vol pot as balanced is just too much complication.
- Status
- Not open for further replies.