Another quick video. Enjoy :)
https://youtu.be/ZoZyDsDSaGY
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Another quick video. Enjoy :)
https://youtu.be/ZoZyDsDSaGY
Very helpful... Thanks for making this
Stupid question.... Lets say that you have a phase-induced dip (whether at the crossover or elsewhere). Is there a difference between fixing the issue with an allpass filter vs fixing the issue with EQ (assuming the end result is the same in terms of freq response)?
I'm still trying to understand and learn how to utilize allpass filters properly.
If a processor didn't have the ability to use allpass filters, is addressing the issue via EQ "appropriate"?
Also - how to decide when to use a first order or secord order allpass filter?
Thank you!
If it is a phase induced dip, then using EQ to boost it can be bad for the speaker and won't work very well anyway. The speakers are still playing those notes loud, they just get cancelled out by the other speaker. So boosting it, is just going to cause it to continue to get cancelled out and now you are pushing that speaker even harder for those notes.
This is all assuming that the individual speaker EQ is actually done well, and knowing what your speakers measure in REW from your posts, that shouldn't be your issue. If your individual speaker EQ is off then yes, that could cause phase issues and EQ could fix those.
In my case, if I EQ the individual speakers to my custom curve perfectly (and they match each other very well), then I've found that I get a few dips when playing them in pairs (really not sure if it is a phase issue, a reflection issue or both). I've just been EQ"ing those few dips (they respond well to EQ) in order to make the L+R speaker pair response match the curve correctly (so I worry more about the speaker pairs matching my curve than the individual speakers)..
I'll have to try using an allpass filter on the dips and see if that resolves them or not - would be nice if an allpass filter solves the dips without needing any EQ boost at all. Haven't really messed with allpass filters yet, so at the very least, it will be a learning experience. :-)
https://www.youtube.com/watch?v=sCEXh0Sv5TA
Great video Skiz, Peter plugs you a couple of times in his newest video.
Two of the best, giving us free knowledge. Thank you!
I've been wanting to make a video like this for ages. This is exactly what I've been jumping up and down about for years. Bravo man, very well done. Thank you for fighting the good fight.Quote:
Originally Posted by SkizeR
I didn't think about using the overall target curve and then using the EQ module in REW to set the crossover points. That's pretty clever and avoids loading and reloading the target curves for each driver. I might have to adjust the instructions on the tuning companion spreadsheet.
I moved the tool over here to continue supporting it.
Now you all can have the "half-whitledge" target curve too!
https://www.caraudiojunkies.com/show...0209#post60209
As i changed my radio a few days ago (byebye SYNC3, hello Kenwood via Maestro RR) i redid my tune.
Did as you showed in your video (LR24 slopes and all) and then when playing left speakers together (and afterwards exactly the same for the right side speakers) i realized i had perfect dips in the xover. Switched phase on midbass by 180°, bam, perfect summation.
So either my speakers are wired incorrectly or my measurements for distance are way off, but all in such a way off, that it perfectly fits a 180° phase switch.
Question now is: should i just let the midbass flipped by 180° or switch them back to 0° and add some more delay to both tweeters first, followed by mids+tweets together to the sub?
When you say 24db slopes and all, is that electrical (dsp settings) or acoustical (measured via rta)?
Electrical and measured...Quote:
Originally Posted by Jdunk54nl
And verified against the EQ function in REW with the appropriate settings (24db et. al.).
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