Difference Direct-, Normal- polarity

figge88 · 10th January 2010, 04:31 PM

Hi!

I'm kind of new to this with preamps, power amps and all that comes with the music interest.
I have a Parasound P/LD 1500 preamplifier and is about to connect it to my power amplifiers.
But I'm wondering whats the differece between the "Direct with fixed polarity" output, and the, "Normal switchable polarity" output?

Which of theese is suitable for amplifiers?
I'm going to use a active subwoofer as well, which output should I use for that one?

Thanks in advance
Fredrik

Glowbug · 10th January 2010, 04:59 PM

I would try it direct first, and listen using a track that tests phase...usually, a voice that's recorded in phase and then out of phase. If you need to switch it, use the switchable output

figge88 · 10th January 2010, 05:17 PM

Ok, but what does it mean with Normal and Direct?
If the subwoofer itself has a switch for polarity, I guess it's preferable to connect it to the fixed polarity output?

Glowbug · 10th January 2010, 05:23 PM

I would guess that the direct doesn't have any switches in the signal path, while the "normal" output does.

Kabal_MSU · 21st January 2010, 08:49 PM

In case of Parasoun "Direct output" can also mean "with probable DC in signal". So, be careful.

10th January 2010, 04:31 PM	#1
figge88 diyAudio Member Join Date: Jan 2010	Difference Direct-, Normal- polarity Hi! I'm kind of new to this with preamps, power amps and all that comes with the music interest. I have a Parasound P/LD 1500 preamplifier and is about to connect it to my power amplifiers. But I'm wondering whats the differece between the "Direct with fixed polarity" output, and the, "Normal switchable polarity" output? Which of theese is suitable for amplifiers? I'm going to use a active subwoofer as well, which output should I use for that one? Thanks in advance Fredrik

10th January 2010, 04:59 PM	#2
Glowbug diyAudio Member Join Date: Feb 2006 Location: Hillsborough, NC/McLean, VA	I would try it direct first, and listen using a track that tests phase...usually, a voice that's recorded in phase and then out of phase. If you need to switch it, use the switchable output __________________ Jim J.

10th January 2010, 05:23 PM	#4
Glowbug diyAudio Member Join Date: Feb 2006 Location: Hillsborough, NC/McLean, VA	I would guess that the direct doesn't have any switches in the signal path, while the "normal" output does. __________________ Jim J.

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10th January 2010, 05:17 PM	#3
figge88 diyAudio Member Join Date: Jan 2010	Ok, but what does it mean with Normal and Direct? If the subwoofer itself has a switch for polarity, I guess it's preferable to connect it to the fixed polarity output?

21st January 2010, 08:49 PM	#5
Kabal_MSU diyAudio Member Join Date: Oct 2009	In case of Parasoun "Direct output" can also mean "with probable DC in signal". So, be careful.

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