Should a negative driver polarity be corrected within XO?

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PhilActiveAudio
Posts: 55
Joined: 21 Jan 2021 21:51

Should a negative driver polarity be corrected within XO?

Post by PhilActiveAudio » 09 Oct 2021 18:09

Hi Uli

One quick question: one of my drivers has a negative polarity.
Should I correct it by changing the XO impulse polarity to improve Room macros later-on or should I keep it like this and let Room macros do their job?
exaSound e68 DAC ==> class D / Accuphase / class D ==> Jensen Supravox / Arai Radian / Fostex
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UliBru
Posts: 468
Joined: 19 Oct 2019 13:58

Re: Should a negative driver polarity be corrected within XO?

Post by UliBru » 09 Oct 2021 19:15

Macro4 will always correct an inverted driver polarity. There is no additional cost.
But I prefer to have all drivers with positive polarity in an active speaker setup . Thus I have never to think about a measurement at a later time.
I always connect the driver properly. I never use e.g. a XO with inverted polarity.
Stay well tuned
Uli

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Acourate system: JRiver/Roon -> AcourateConvolver -> miniDSP U-DIO8 -> TacT M/S2150 amps -> DIY horn speakers
PhilActiveAudio
Posts: 55
Joined: 21 Jan 2021 21:51

Re: Should a negative driver polarity be corrected within XO?

Post by PhilActiveAudio » 10 Oct 2021 00:19

Thanks for your clear answer. This is what I did with my previous setup and I will do now with my new one: I will invert cables at the driver input.
exaSound e68 DAC ==> class D / Accuphase / class D ==> Jensen Supravox / Arai Radian / Fostex
PhilActiveAudio
Posts: 55
Joined: 21 Jan 2021 21:51

Re: Should a negative driver polarity be corrected within XO?

Post by PhilActiveAudio » 28 Oct 2021 19:44

So, I changed tweeters cabling at the tweeter side.

Following is the impulse of the 3 drivers with appropriate rotation per driver:
> Red impulse: before tweeter cabling inversion.
> Black impulse: after tweeter cabling inversion.

No need to add anything!
Impulse before and after tweeter inversion.jpg
Impulse before and after tweeter inversion.jpg (133.54 KiB) Viewed 1163 times
exaSound e68 DAC ==> class D / Accuphase / class D ==> Jensen Supravox / Arai Radian / Fostex
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