Ok, I'm a little confused here. Earlier in this thread, you said this:
"The only time I’ve ever got a full 6db of summation is while using smaart to actually set delays and phase by a mic positioned between the ears and then adjusted the delays to suit, of I do this I can sum my front midbass and get a full 6db between them, that means they are perfectly in phase"
But now you are saying that I actually *should* be getting 6dB of summation with my dash speakers - at least "lower down" - and if I don't, then something is wrong. :-) Obviously, I'm not using smaart, so it sounds like I really *won't* be getting 6dB of summation after all.... ?
I've had multiple people tell me that 3dB to 4dB of summation for my dash speakers is actually pretty normal and has something to do with the wavelengths and the size of the car interior - or something along those lines. I've measured, re-measured and re-re-measured the distances to my dash speakers, so I know they are correct. I'm sure that there most certainly are reflections with the dash speakers since they in stock locations and point pretty much straight up into the windshield.
But what I'm trying to clarify is the 6dB summation part. From everything I've read, you'll rarely get a full 6dB of summation - especially for mid/high frequencies - and that you can sometimes get close to a full 6dB of summation with midbass frequencies (which I do get, for the most part).
Just trying to get clarification.
I'm curious to see what kind of summation @Cathul gets when he measures L+R speaker pairs.
Thank you.