Very cool dumdum, thank you!
Very cool dumdum, thank you!
Measure with mics, mark with chalk, cut with torch, grind to fit, sand to finish, paint to match.
Updated Justin tuning sheet (Justin and Erica tuning companion for SMAART and REW)
Do it for them.
Are you using virtual channels in a helix dsp? If you mean the bottom end of the midbass level also changes with the sub level then that will make the crossover remain the same as if the sub goes up by 6db so does the adjoining part of the midbass, if that’s what you’ve done it’s a good solution... it means your phase relationship will remain the same as it’s at the same point whatever the sub level is set to 👍🏼
Hey Dumdum, what version of Smaart are you using? Di or V8? Also what microphone(s) and I/O device if you are using one? I am very tempted to finally purchase my own copy and am leaning towards the di version.....
2014 F150 Limited -> Kenwood DDX-9907xr -> Helix DSP.2 -> Alpine PDX-V9 -> SI M25 mki in Valicar Stuttgart Pods, Rear SB17's, Sub SI BM MKV's in MTI BOX. Alpine PDX-F6 -> SI Tm65 mkIV, SI M3 mkI in Valicar Stuttgart Pods
Also, for those that want to play with phase, you can do a little of that with REW and the alignment tool. To get to it, you need a newer version of REW.
Take IR measurements by pressing the measure button (not RTA).
Go to the ALL spl tab and click the gear icon.
Click the alignment tool.
Select the two drivers you want to phase align
Adjust the delay of one or the other to get the phase to match up around the crossover.
If negative delay, the speaker is closer than the other, if positive, it means that speaker is farther away than the other.
You can also see how the FR above is impacted by the delay. This isn't "real time" like Smaart, but you can at least take one measurement of each driver, use the tool, then make a change and see how it works. It used to be every change you had to take another measurement.
YMMV with this, I haven't had great luck using this and setting the delays suggested, the center image is always off when I do.....I am sure it is user error.
Note 1* Unfortunately the dsp I am using for this vehicle has maximum delay of 8ms
Note 2* Make sure if you are doing this, you set your sub level appropriately for measuring against a single speaker. My subs are 6db higher than a single speaker but with both mids playing the sub level crosses with both mids at 80hz.
This is the generated minimum phase version and levels adjusted (via rew and measurement action button), maybe this is what I need to use ???
Edit* just played around with this, it gave me the same time alignment of ~2.20s for EVERY driver except sub at 0...This would not give me a center image....
Last edited by Jdunk54nl; 01-05-2021 at 11:46 AM.
2014 F150 Limited -> Kenwood DDX-9907xr -> Helix DSP.2 -> Alpine PDX-V9 -> SI M25 mki in Valicar Stuttgart Pods, Rear SB17's, Sub SI BM MKV's in MTI BOX. Alpine PDX-F6 -> SI Tm65 mkIV, SI M3 mkI in Valicar Stuttgart Pods
2014 F150 Limited -> Kenwood DDX-9907xr -> Helix DSP.2 -> Alpine PDX-V9 -> SI M25 mki in Valicar Stuttgart Pods, Rear SB17's, Sub SI BM MKV's in MTI BOX. Alpine PDX-F6 -> SI Tm65 mkIV, SI M3 mkI in Valicar Stuttgart Pods