Sealed if you want tight, accurate bass in the smallest footprint and you’d rather the box be forgiving of a slightly-off volume. Ported if you want the most output per watt and you have room for a larger box built to a specific tuning. Neither is “better”; they answer different questions. The full comparison is in our sealed vs ported guide, and we’ll give you a one-sentence answer if you tell us the sub and what you’re after.

The manufacturer’s spec sheet lists a recommended sealed volume and/or ported volume, usually in cubic feet. That range, not your trunk, is the target. Check any candidate box with the volume calculator (it accounts for wall thickness and driver displacement). If you don’t have the sheet, our spec-sheet guide explains what to look for, or just send us the model number.

Depends on the goal and the space. Two drivers move more air for the same cone excursion and can play lower with less strain, but they need roughly double the airspace and double the power. A single 12 in a correctly sized box often beats two 10s crammed into a box that’s too small for them. We’d rather size one driver right than two wrong.

Yes, and it’s the part most often skipped. The same driver in the wrong box sounds like a different, worse product. Volume, port tuning, bracing, and baffle thickness all change what you hear and how hard the sub can be pushed safely. Spending on the enclosure is not the boring part of the budget; it’s the part that decides whether the expensive part sounds expensive.

The subwoofer’s motor and basket take up space inside the box, so the air the sub actually “sees” is the internal volume minus the driver’s own volume. Spec sheets list it, usually a few hundredths to a couple of tenths of a cubic foot. Ignore it on a small sealed box and you can land noticeably under the target.

Both, depending on the build. Ask about any specific enclosure and we’ll tell you plainly whether it’s built in-house for your order or sourced and quality-checked before it ships. We don’t dress up one as the other.

Yes. Make, model, year, and the location you have in mind (under seat, behind seat, trunk corner, spare-tire well) is enough for us to tell you what’s realistic and what airspace that cavity can honestly deliver. Our vehicle-specific vs universal guide covers the tradeoffs.

It depends on the build and current order volume, so we quote a real timeline per order rather than publish a number that’s only sometimes true. Ready-made items ship faster than built-to-order enclosures; shipping time starts after the build is complete.

Yes. We just need the exact model so the box is sized to its spec, and the mounting depth and cutout diameter so it physically fits.

See the payment policy for the current accepted methods. If checkout shows no payment option, that’s accurate rather than broken; contact us and we’ll arrange payment directly.

Not currently. Within the US, smaller items ship parcel and larger enclosures ship freight; cost and timing are confirmed before anything ships. Details in the shipping policy.

Custom-built enclosures aren’t returnable once production starts, because they’re built for your specific sub and vehicle. Ready-made items may be; contact us first. Damaged or incorrect items are handled directly and promptly. Full detail in returns & refunds.

Manufactured components carry their manufacturer’s warranty. Enclosure coverage depends on the specific build; we state it before you order. See warranty.

We’re in Royse City, on the east side of DFW. Contact us about your order and we’ll tell you what’s possible for pickup versus shipping.