Speaker packaging covers everything from a palm-sized portable to a floorstander that ships one to a pallet, so there is no single chart to hand you. What there is, is a repeatable method: measure the cabinet, add the protrusions, add the cushion, then check the result against what a carrier will accept.
Four measurements, taken in this order
- Cabinet width, height and depth at the widest points. Cabinets are rarely a true rectangle. Curved or tapered sides mean the widest section governs, not the average.
- Every protrusion. Grille locating pins, rubber or spiked feet, binding posts and cable entries on the rear, carry handles, and any driver that sits proud of the baffle. Add these to the relevant face.
- The accessory load. Power supply, cables, grille if it ships detached, remote, manual. These need their own tray or compartment, and that compartment is part of the depth.
- Packed weight. A magnet and an MDF cabinet make speakers heavier per cubic inch than almost anything else of the same size.
Checking the result against carrier limits
Large cabinets bump into published parcel limits before they bump into anything else. Girth is twice the width plus twice the height. US ground services commonly publish a maximum of 165 inches for length plus girth, a 108 inch maximum length and a 150 pound weight ceiling, with surcharges kicking in well below those numbers. Confirm the current figures on your own carrier rate card, then work backwards: if the box you just designed crosses a threshold, a slimmer cushion or a two-piece telescoping construction is cheaper than a freight reclassification on every shipment.
Board and inner protection
| Situation | Usual construction |
|---|---|
| Small portable, light, retail shelf presence matters | Printed folding carton or E flute litho-laminated corrugated, with a moulded pulp or foam cradle |
| Bookshelf pair, moderate weight, ships parcel | Single wall C flute outer with foam end caps, often two cabinets per box |
| Floorstander or subwoofer, heavy, ships freight | Double wall outer, corner blocks or full-depth foam end caps, cleated base if palletised |
Foam end caps are the usual answer for speakers because they suspend the cabinet away from all six walls and take the drop energy at the corners, which is where a cabinet edge dents. A fitted cavity also stops the cabinet rotating in transit and rubbing its own finish.
Print and finish notes
If the box is opened by the end customer, the inside face is worth printing. Litho-lamination gives you photographic quality on a corrugated outer, which matters if the speaker is sold on appearance. If the box is a plain transit outer heading into a warehouse, one or two colours on natural kraft is the cheaper route and reads as deliberate.
Ordering and turnaround
Minimum order is 100 boxes, and pricing starts from about $0.48 per unit at bulk volumes, confirmed on your written quote. The die, the plates, design support, US shipping and a digital proof are included, so a custom internal size costs no more to tool than a near-standard one. Production runs from West Chicago in the US and Guangzhou in China. Turnaround is quoted per product across three lanes, rush (expedited production plus air freight), standard (air) and cost saver (sea), from about 7 business days plus 2 to 5 for delivery, and specialty imported constructions can run up to about 12 weeks. Rush adds about 7 to 25% depending on the job.
Order the product itself at custom speaker boxes. If you are also specifying the shipper that carries several units, the method on sizing a corrugated shipping box applies to the outer.
Send the cabinet measurements, the protrusion list and the packed weight through the quote form. We will come back with an internal dimension, a board grade and a written price, and we will flag it if the size you asked for crosses a carrier threshold.
