TubelabSE phase

wicked1 · 7th July 2008, 04:50 PM

I'm trying to pair a couple of subs w/ my full range horns, and was wondering how to set the phase on the subs.
My setup is... source - splitter - tubelabse & subs

I think it sounds best at 0 degrees, but its really hard to say. At one polarity there seems to be more low bass, and at another there seems to be more mid bass.

So, I guess to answer my question, does the tubelab SE output the same polarity as what is input, or does it invert the signal?

Thanks!

Evenharmonics · 7th July 2008, 06:01 PM

The quickest way to get it set up is to use some sort of measuring program like RTA by Trueaudio and try different phase settings to see how well it plots out. If not, you could try something like Radio Shack's spl meter and tone generator / cd.

tubelab.com · 7th July 2008, 07:13 PM

The TubelabSE should not invert the phase. Really, like most two stage amps it inverts twice, thus having a total of zero.

I have discovered that many OPT's are wound so that they may invert the phase. Without having some experience with your particular OPT, I can not say for sure whether you have zero, or 180 degrees.

7th July 2008, 04:50 PM	#1
wicked1 diyAudio Member Join Date: Jan 2008	TubelabSE phase I'm trying to pair a couple of subs w/ my full range horns, and was wondering how to set the phase on the subs. My setup is... source - splitter - tubelabse & subs I think it sounds best at 0 degrees, but its really hard to say. At one polarity there seems to be more low bass, and at another there seems to be more mid bass. So, I guess to answer my question, does the tubelab SE output the same polarity as what is input, or does it invert the signal? Thanks!

7th July 2008, 07:13 PM	#3
tubelab.com diyAudio Member Join Date: Jul 2005 Location: South Florida	The TubelabSE should not invert the phase. Really, like most two stage amps it inverts twice, thus having a total of zero. I have discovered that many OPT's are wound so that they may invert the phase. Without having some experience with your particular OPT, I can not say for sure whether you have zero, or 180 degrees. __________________ Too much power is almost enough! Turn it up till it explodes - then back up just a little.

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7th July 2008, 06:01 PM	#2
Evenharmonics diyAudio Member Join Date: Apr 2007	The quickest way to get it set up is to use some sort of measuring program like RTA by Trueaudio and try different phase settings to see how well it plots out. If not, you could try something like Radio Shack's spl meter and tone generator / cd.

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