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2021 Sierra AT4 - High End Audio Upgrade - Helix, Audiofrog GB, JL Audio, Resonix

Luke Ouellet
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Luke Ouellet Enthusiast

Luke Ouellet

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Just now, shakenfake said:

Jesus what a lot of work but damn I bet it feels good and sounds better!

 

Question, where did you get the stealthbox? Did you have to wait for J&L to make it for you or did they just have some in stock?

Thanks! And it's a dramatic difference from any OEM system I have ever heard.  Range rover, Benz - the key is in the DSP, it's an insanely powerful audio tool - esp. the Helix.

 

I had actually done the main speaker wire harness and power from my previous build but knocked everything else out in 2 weekday night and 2 very long weekend days.  Tuning has been on going though.

 

The Stealthbox I had gotten lucky - Crutchfield never has them in stock and when I was chatting with an agent, they had just gotten one in stock that day - I immediately pulled the trigger, felt like fate.

shakenfake Senior Enthusiast

shakenfake

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Posted

Yeah I figured you had some things already done but was just perusing all your other photos. 

 

How do you like the stealthbox so far? What sub(s) is/are in it? 

I'm a little surprised you didn't get a custom box, not that JL is bad but I'd say this is a custom job :cool:

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Luke Ouellet Enthusiast

Luke Ouellet

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Yeah the truck has been through 4 builds already so the frame work was there for a few of the pieces.

 

Actually love the box - it was that or an MTI Acoustics Stage 2 Box.  Came down to lead time on the build I was doing at the time and would have ended up with the same subwoofers no matter what. I've come to prefer sealed vs. ported as well and the fiberglass construction is beyond sturdy.  I also like that the JL box sits behind the front lip of the seats, every picture of the MTI boxes I see has the box project out past the seats and I'm not a big fan of that.

 

The box has 2, 12" JL Audio 12 TW3-D8's wired at 2 ohms rated for 400W RMS each.  Sub amp is giving them 880W.  Previous build was giving them 600W and with a proper tune now, it is night and day.  They play flat down to about 27-28hz, which I'll happily take for a sealed box with 12s.  I am certainly tuned more for sound quality but they boogie when they want to.

Edited by Luke Ouellet

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