Featured 8w3v3 dual ported box build for truck help…

[WNCTracker]

I’m a novice compared to most, but know enough to know that I need help. I’ve had two JL 8W3v3’s in separate factory JL Microsub ported boxes run by a JD 500/1 in my previous truck and have to say that they were very surprising. I e read that these boxes are 35HZ. I’ve got a new truck Tundra 2025. They’re now under the back seat and I’ve removed the plastic storage bin and have found some pockets of depth and could build a box to maximize my potential now. I have a sort of basic design in mind that I was planning for two 10Tw3’s, but expense is of course a barrier so I was considering making a single ported box for the two 8’s.

Questions
1. Would putting two 8’s in one bigger ported box tuned to 32HZ make much of a noticeable difference?
2. I’ve tried using sub box pro online to design a box but can’t figure out how to design one like I’ve drawn so that I can then figure out the best sounding design. Attached is a picture of the box with exterior dimensions.
3. Am I chasing something that’s a waste and should just keep saving to get two shallow 10’s. If I did that, I may be able to fit a 10w3 in the deep pocket and a 10Tw3 on the shallower part in a sealed box? Is that a stupid idea?
4. Would adding two more 8W3V3’s and upgrading amp be an idea to consider???

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[CarAudio.com - Hal AI Bots]

I’m a novice compared to most, but know enough to know that I need help. I’ve had two JL 8W3v3’s in separate factory JL Microsub ported boxes run by a JD 500/1 in my previous truck and have to say that they were very surprising. I e read that these boxes are 35HZ. I’ve got a new truck Tundra 2025. They’re now under the back seat and I’ve removed the plastic storage bin and have found some pockets of depth and could build a box to maximize my potential now. I have a sort of basic design in mind that I was planning for two 10Tw3’s, but expense is of course a barrier so I was considering making a single ported box for the two 8’s.

Questions
1. Would putting two 8’s in one bigger ported box tuned to 32HZ make much of a noticeable difference?
2. I’ve tried using sub box pro online to design a box but can’t figure out how to design one like I’ve drawn so that I can then figure out the best sounding design. Attached is a picture of the box with exterior dimensions.
3. Am I chasing something that’s a waste and should just keep saving to get two shallow 10’s. If I did that, I may be able to fit a 10w3 in the deep pocket and a 10Tw3 on the shallower part in a sealed box? Is that a stupid idea?
4. Would adding two more 8W3V3’s and upgrading amp be an idea to consider???

You've got some great questions and an interesting setup! Let’s break down your points.

### 1. Two 8W3v3s in a Single Ported Box Tuned to 32Hz
Putting your two 8W3v3s in a single larger ported box tuned to 32Hz can certainly yield a noticeable improvement in sound quality and output. The larger volume will provide a more effective air spring for the subs, potentially leading to better low-frequency extension and overall output, especially if tuned properly. The tuning frequency at 32Hz is also beneficial, as it’s lower than 35Hz, which may help in achieving deeper bass response.

### 2. Designing the Box
Sub Box Pro can be tricky to navigate. If you're trying to create a unique custom shape, you might need to break it down into simpler components (rectangles) and calculate the overall volume based on the combined shapes. Ensure to account for the displacement of the woofers and any bracing you plan to add.

Make sure to also consider the port size and length. Typically, for the 8W3v3s, you would want to keep the internal volume around 1.0 to 1.5 cubic feet per sub, so your total volume should ideally be between 2.0 - 3.0 cubic feet net after accounting for all displacements.

### 3. Shallow 10s vs. Keeping 8s
If you're set on better sound quality and can afford two shallow 10’s in the future, they might provide a more impactful bass experience overall, mainly due to their larger cone area. However, it’s not a stupid idea to run a combination of 10W3s and 10Tw3s in a sealed box. Sealed designs can deliver tight, accurate bass, but just remember that the location of the speakers may affect the output based on the available internal space.

Given your current setup with the 8s, if they sound good to you and you enjoy them, then upgrading to a larger box may be the best option for now.

### 4. Adding More 8W3v3s and Upgrading Your Amp
Adding two more 8W3v3s and upgrading your amp could significantly raise your overall output and sound quality. The added subwoofers will give you more cone area to work with, which translates to increased volume and bass response. Make sure your new amp can handle the increased load and that you have adequate wiring to support the added power.

### Summary

• Building a larger ported box for the two 8W3v3s is a solid plan.
• Experiment with design, possibly using simpler dimensions in your design tool.
• Consider your future investment in shallow 10s based on space and pricing.
• Adding more 8W3v3s could definitely elevate your audio experience.

If you have more specific measurements or design constraints, please share, and I’d be happy to help further. Also, I encourage others to chime in with their experiences or opinions!