A Question about Phase Inverter Output

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sst4270
Posts: 259
Joined: Mon Jan 08, 2007 8:28 pm
Location: Glen Burnie, MD

A Question about Phase Inverter Output

Post by sst4270 »

I have a technical question for the amp gurus here...

Could the output(s) signal of a phase inverter be sent to a power amp directly?

In other words, could the in-phase and out-of-phase signals be sent (as two separate) preamp signals to the left and right channels of a separate stereo amplifier? Instead of through the power tubes and output transformer?

Then L&R channels of the stereo amp would the output the same guitar signal out of phase, right?

Would the signal be too hot (high voltage) coming from the PI?

Your advise would be greatly appreciated.

Regards,

Steve
paddy
Posts: 112
Joined: Thu Feb 02, 2006 7:28 pm
Location: Tasmania, Australia

Re: A Question about Phase Inverter Output

Post by paddy »

Hi Steve,

the purpose of a phase inverter is to provide the out of phase signals required by a push pull output stage.
Feeding these signals into a stereo amp would not result in a very good sound as the speakers would be driven in anti-phase.
Furthermore, the output of the phase inverter would be too high for a stereo amp (assuming you are talking about driving an integrated amp).

Cheers,
Paddy
tubeswell
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Joined: Thu Mar 27, 2008 6:42 am
Location: Wellington. NZ

Re: A Question about Phase Inverter Output

Post by tubeswell »

paddy wrote:the purpose of a phase inverter is to provide the out of phase signals required by a push pull output stage.
Feeding these signals into a stereo amp would not result in a very good sound as the speakers would be driven in anti-phase.
You could wire one of the speakers up back-to-front and then they would be in phase again :idea:
paddy
Posts: 112
Joined: Thu Feb 02, 2006 7:28 pm
Location: Tasmania, Australia

Re: A Question about Phase Inverter Output

Post by paddy »

Good point Tubeswell. I didn't consider this.
Sometimes my brain doesn't work properly! :oops:
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