1st rule:
This isn't a thread to argue against rear fill. This is for those of us that want to try rear fill, how to do it.
2nd rule:
See rule 1.
Okay now that we got that out of the way, lets talk how to properly implement rear fill.
I have read nearly everything I could find on DIYMA and here are the basics that I have come up with, but it is fairly general and some of you may have better "how to's" based on more recent stuff.
1) Must be L-R
2) Attenuated somewhere between 6-10db
3) Delayed somewhere around 15-20ms.
4) Bandpassed somewhere around 300hz to like 3500hz (to match your midrange seems about right and based in energy dissipation/reflection stuff)
I've been playing around with this and trying to get it dialed in. Here are my issues/thoughts so far.
1) I actually really like it so far. It brings something that I can't quite explain to the listening. It is also kind of fun to listen to just the rear speakers and how weird the music becomes with no common center information. Things get cut off weirdly.
2) I still need to fine tune the attenuation and delay. I originally had it around 17.5ms but that sounded like it was too much of an echo effect. I now have it around 11ms but that doesn't quite seem like enough.
3) I only have one channel on my dsp for rear fill so I have channel 7 split for both rear speakers that are located in the rear door of my crew cab. This makes the left inherently louder than right due to distance. I am thinking about how to fix this with some resistor or something.
4) It is hard to tune due to the L-R and the channels being tied together. Definitely need to use uncorrelated pink noise if you set it up like me. Make sure if you do pink noise gain setting on your amp, you also play uncorrelated for these speakers...otherwise the volume gets to basically nothing.
So who here has tried it and what did you do to find the best success with rear fill? I know Skizer just did this in Doug's Audi so maybe he can share what he did with that.
This isn't a thread to argue against rear fill. This is for those of us that want to try rear fill, how to do it.
2nd rule:
See rule 1.
Okay now that we got that out of the way, lets talk how to properly implement rear fill.
I have read nearly everything I could find on DIYMA and here are the basics that I have come up with, but it is fairly general and some of you may have better "how to's" based on more recent stuff.
1) Must be L-R
2) Attenuated somewhere between 6-10db
3) Delayed somewhere around 15-20ms.
4) Bandpassed somewhere around 300hz to like 3500hz (to match your midrange seems about right and based in energy dissipation/reflection stuff)
I've been playing around with this and trying to get it dialed in. Here are my issues/thoughts so far.
1) I actually really like it so far. It brings something that I can't quite explain to the listening. It is also kind of fun to listen to just the rear speakers and how weird the music becomes with no common center information. Things get cut off weirdly.
2) I still need to fine tune the attenuation and delay. I originally had it around 17.5ms but that sounded like it was too much of an echo effect. I now have it around 11ms but that doesn't quite seem like enough.
3) I only have one channel on my dsp for rear fill so I have channel 7 split for both rear speakers that are located in the rear door of my crew cab. This makes the left inherently louder than right due to distance. I am thinking about how to fix this with some resistor or something.
4) It is hard to tune due to the L-R and the channels being tied together. Definitely need to use uncorrelated pink noise if you set it up like me. Make sure if you do pink noise gain setting on your amp, you also play uncorrelated for these speakers...otherwise the volume gets to basically nothing.
So who here has tried it and what did you do to find the best success with rear fill? I know Skizer just did this in Doug's Audi so maybe he can share what he did with that.