Very interesting !
Can solve the problem, but I have some questions.
Doesn't feedback path get twice as long?
I mean double phase shift, double distortion?
Can solve the problem, but I have some questions.
Doesn't feedback path get twice as long?
I mean double phase shift, double distortion?
On first look, you are feeding back output from amp1 to amp2 and vice versa,
in this case it is very unlikely that the fb does reduce distortions ?
Mike
in this case it is very unlikely that the fb does reduce distortions ?
Mike
darkfeniz,
You do raise a good point. The circuit would work best with balanced drive but you would have doubled the slew rate and almost four times the power (assuming an ideal power supply) and feedback should correct for some of the distortion.
I have a gut feeling this would turn out to be a great amp...........I have been considering this topology for some time......I need to get around to building it.............
Regards,
Jam
You do raise a good point. The circuit would work best with balanced drive but you would have doubled the slew rate and almost four times the power (assuming an ideal power supply) and feedback should correct for some of the distortion.
I have a gut feeling this would turn out to be a great amp...........I have been considering this topology for some time......I need to get around to building it.............
Regards,
Jam
Mike,
I woud think we might have to ask Mr.Pass that question.
It just came to me that if we made each gain stage inverting would it not then qualify as an X-Amp.
Regards,
Jam
I woud think we might have to ask Mr.Pass that question.
It just came to me that if we made each gain stage inverting would it not then qualify as an X-Amp.
Regards,
Jam
I ment inherent distortion in the amp rather than the possible added distortion added by bridgeing the amp.
Regards,
Jam
Regards,
Jam
Yes, but with x2 doing nothing you have no bridged operation, the 2nd
amp needs to work exactly inverted to amp1 ?
Mike
amp needs to work exactly inverted to amp1 ?
Mike
Hey guys
Don't you think you should let the Guru fifnish explaining his amp before you completely redesign it into something else?
It would only be polite! 😉
Don't you think you should let the Guru fifnish explaining his amp before you completely redesign it into something else?
It would only be polite! 😉
Mike,
A signal is present across R1 which is the input to X2 which is the inverting portion of the amp.
Jam
A signal is present across R1 which is the input to X2 which is the inverting portion of the amp.
Jam
Some time ago I bridged my error correction amp modules in the same way as shown now in this thread, here is the result:
http://web.telecom.cz/macura/pm_ab4/pm_ab4.html
http://web.telecom.cz/macura/pm_ab4/pm_ab4.html
PMA,
Nice looking amplifier. Could you post the schematic.
Did bridgeing the amp this way improve the sound.
Regards,
Jam
P.S. I need to learn to read Czech....................😉
Nice looking amplifier. Could you post the schematic.
Did bridgeing the amp this way improve the sound.
Regards,
Jam
P.S. I need to learn to read Czech....................😉
jam said:
Yes,
that reminds a bit of a circuit I invented for some 10 years ago which gave a spatial stereo effect! 😀
Cheers Michael
- Status
- Not open for further replies.