This idea is indeed almost as old as Aristotle!
It's covered in A.J. van den Hul's FAQ on Phono Cartridges, question #162:
AJ van den Hul Phono Cartridge FAQ
Other forums have discussed this as well. Example from 2009:
AudioKarma Thread on Cartridges Wired OOP
Cheers,
B B
It's covered in A.J. van den Hul's FAQ on Phono Cartridges, question #162:
AJ van den Hul Phono Cartridge FAQ
Other forums have discussed this as well. Example from 2009:
AudioKarma Thread on Cartridges Wired OOP
Cheers,
B B
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Genial idea! If I understand correctly, L pulls and R pushes the power supply at low frequency, this way the combined power is not fluctuating but constant.
But you don't need to tamper with the phono cartridge, this trick (phase inversion in one channel) can be done in the preamplifier.
But you don't need to tamper with the phono cartridge, this trick (phase inversion in one channel) can be done in the preamplifier.
Not always the case if you are using higher power class D amplifiers with a single power supply, it significantly reduces 'pumping'
Highly doubtful with any reasonable amplifier design. But it would be easy to measure to test your theory.
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Sorry, should have read 'Single ended' rather than 'single power supply'.
Have a look here for background data:-
https://www.maximintegrated.com/en/app-notes/index.mvp/id/4260
Have a look here for background data:-
https://www.maximintegrated.com/en/app-notes/index.mvp/id/4260
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That's the one thing I don't like about this forum: whenever someone comes with a clever idea to improve something, there is always someone nagging that it's useless because a stupider solution is good enough.
Well Marcel, we will have to agree to disagree on the 'clever' part. For car audio I can see an application. For battery boom boxes I can see an application. For domestic audio I fail to see the benefit, which is probably why, despite it being around for a long time I am not aware of any application in home audio.
For anyone with an all digital rig of course it's very easy to test as you can invert one channel of your test music in your favourite editor then flip a speaker cable.
For anyone with an all digital rig of course it's very easy to test as you can invert one channel of your test music in your favourite editor then flip a speaker cable.
I think it's the opposite actually! Car audio usually use BTL outputs while home appliances are usually single ended...
Now I understand what you are writing about. That's been a known problem for about a decade. But for the most part, it's restricted to low power or low budget Class 'D' amplifiers.
That's what I meant. BTL is exactly this application, but per channel rather than inverting one channel.
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