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02-09-2022
#11
Noob
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02-09-2022
#12
Noob
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02-09-2022
#13
Re: 2021 GMC Sierra AT4 - Helix, Audiofrog GB, JL, Resonix
Great work... and nice "big" drill press! What brand of distro blocks are those, don't think I've seen them before?
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02-09-2022
#14
Noob
Re: 2021 GMC Sierra AT4 - Helix, Audiofrog GB, JL, Resonix
Thanks man! - Those are T-Spec Distro blocks - T-Spec v12 Series VDB2 - Ground Block
T-Spec v12 Series VFDB2 - Fused Power Block
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02-09-2022
#15
Noob
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02-09-2022
#16
Noob
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02-09-2022
#17
Noob
Re: 2021 GMC Sierra AT4 - Helix, Audiofrog GB, JL, Resonix
I started initially using the AutoEQ feature in the Helix Suite with a UMIK-1 and honestly got some decent results. A little boomy in the 500 - 2k hz area but honestly for a 5 min tune, it was very passable.
Parameters for AutoEQ were:
All crossovers were LR 24db/octave
Subs were 20hz HP and 80hz LP
GB60s were 80hz HP and 1800hz LP
GB15s were 1800hz HP only
GS62 in rear were 80hz HP only
I played a bit with it but eventually got a remote tune. I hooked up with Shannon Price this Saturday to knock out a a basic remote tune of the system. He was very competitively priced and figured it would at least be a small crash course in witnessing how he tunes, measures, adjusts, etc. as I have never seen the process done live. He spent a couple hours with me and got me pretty much 90% there and I tweaked the rest of the way to finalize the center of the stage, integrate my rears and global EQ.
In full disclosure, I ran out of time to save my final measurements properly (new REW user) after I integrated my rear speakers and did some final global eq adjusting. The small hole you see @ 50-60 hz is filled and I took a touch off of the hump at 80-100hz to create a much more linear rise from 200 hz up to ~35 hz. I have rears crossed at 155 hz, 24 and 5000, 24 - this helped keeping them from distracting from my front stage at all, just a compliment.
Overall, this was a drastic step up from the AutoEQ but still think the AutoEQ has a ton of value vs time invested tuning.
I had Shannon measure my the autoEQ in red and it is shown here against his final tune (before my rears were added and my Global EQ adjustments) and you can see the big improvement. I had suspected my 200 - 1000hz was off after realizing things sounded a little boomy, esp with lower male vocals, lower end guitar/piano notes and that certainly seemed consistent with the measurements we saw.
We started on the left side - GB60s crossed at 80 hz, 24db and 1800 hz, 24db. This shows left mid, left tweet and both measured together. Had a little hole @ 800hz that we boosted gently to ease the curse but mostly disappeared once we got the whole front stage tied together.
Right side of the front stage. Had a nasty hole at 200 hz that again blended mostly away after we got the whole front stage together.
Left Front Stage, Right Front Stage and Overall Front Stage. Ended up quite balanced.
From there, we added the subs. Ended up inverting the polarity of my subs and crossing them at 64hz, 24 db to deal with some issues we were having at the 80-150 hz area. I have to say the the blending of my bass to midbass and location of where bass is coming from is superior with this tune. Feels like the bass rises universally from the floor of the vehicle.
Overall, the system just gets better with time and break in. I will continue to tweak some really minor things and hopefully can make some time to hook up with Nick for an in person tune later this spring. I think that will be another big step forward but right now, with the tools at my disposal, I am stoked. The ability to hear a bass drum getting hit by the pedal AND feeling it in your chest is hard to explain to the average listener. Or hearing the breath and tongue clicks between words, the strings of an upright bass vibrating off the fingerboard in Lake Street Dive recordings just makes me want to sit and listen to everything again. I also now notice a distinct difference between well mixed music and poor recordings, it's amazing how much more detail you pick up on.
I am currently playing around with adding the bass augmentation because I find at lower volumes (when I have passengers), the low end is lacking without a major adjustment to the my sub gain on my Conductor. I will probably experiment with differential real fill and the stage expander as well to see what it does.
Lastly, this is what my Helix EQ looks like.
Now to begin designing and dreaming about 3 way front stage combinations that fit in these pods:
https://www.instagram.com/p/CBtiKFfp...e-fb3421979177
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02-09-2022
#18
Re: 2021 GMC Sierra AT4 - Helix, Audiofrog GB, JL, Resonix
That looks awesome! I love the attention to detail.
One of my bosses has an AT4 with the same Fuel Offroad wheels that I have on my Z71
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02-10-2022
#19
Re: 2021 GMC Sierra AT4 - Helix, Audiofrog GB, JL, Resonix
Cool, I appreciate the info!
Awesome choice on placement of the Conductor... very clever use of space!
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02-11-2022
#20
Noob
Re: 2021 GMC Sierra AT4 - Helix, Audiofrog GB, JL, Resonix
Welp 2 way lasted 2 weeks.
Just pulled the trigger on a juicy 3 way from BLAM.
WS8.100 - 2 ohm, 8” mid bass
Multix MS3 - 3” midrange
TSM 25Mg 45HR - 1” Tweeter
Will have the GB60/15 for sale in a few weeks. Looking for $1150 for the combo, will have only a month or so of use.
damn excited to see what this 3 way is capable of, esp with a tune from Nick.
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