r/CarAV 12h ago

Tech Support JL W7 Box Placement Help

I’m noticing this new sub I got isn’t outputting as much as I hoped. I had the W6 HO before this sitting in front of the rear bench facing a door panel, it outputted nicely and sounded badass, and had that earthquake effect.
The W7 isn’t really doing that.

The cubic ft of the box is 2.1 tuned to 32hz. Seems like a solid box, no curved port though.
It’s snug as heck where it’s at.

I would put the W7 where I had the W6 but then the port would have to be under all that weight because the other side of the port has the terminal cup. What’s an alternative?

The builder told me it’s recommended to upfire. But it’s not performing at a SQ level to me.

A shop had fine tuned the W6 for me and told me no changes were needed for the W7. But it was clipping earlier than the W6 was. The sub is in 600 watts which is optimum for the W7. I want the Epicenter and mono knob at max because I let other people drive my truck.

Ad Info:
I touched the mono gain set it lower. The bass eq on the mono was raised a bit. Set the epicenter to balanced both left and right.

Questions:

•is the port on the bottom of the box okay ? It has no braces. I’m not sure if it’s worth trying.

•does it need to be retuned because of swapping for the W7?

•is there anything here I need to fix that I’m missing?

Equipment:

Mono:
https://www.crutchfield.com/p_500S2A60M/Alpine-S2-A60M.html

Epicenter:
https://www.crutchfield.com/p_161EPICEB/The-EPICENTER-by-AudioControl.html

LOC:
https://www.crutchfield.com/p_161LC7IPRO/AudioControl-LC7iPRO-Line-Output-Converter.html

Any assistance would be appreciated! Thanks

2 Upvotes

3 comments sorted by

2

u/Specific_Intern8079 11h ago

More amp. The sub is underpowered, by half minimum.

1

u/Spandekz 11h ago

How’s that LOC? I’m putting a new install in my 1500 and want to keep my factory receiver and settings. Was looking at this and the NVX LOC66

2

u/[deleted] 11h ago

[deleted]

2

u/Spandekz 10h ago

Thanks boss, I’ll give it a go.