The d&b B22 sub is a high-output, horn-loaded subwoofer built around 2 × 22" neodymium drivers, rated at 4000 W AES with a frequency range of 30–120 Hz and a maximum SPL of 139 dB. At 115 kg and 760 × 760 × 760 mm, it is a serious touring cabinet, not a venue install afterthought. For overseas distributors and rental companies sourcing used d&b B22 sub for sale, the buying decision usually comes down to driver health and cabinet integrity rather than cosmetics.
Start with the drivers. Neodymium magnets lose strength if overheated, and a sub that has been driven hard on a long tour may show it in the magnet gap rather than on the cone. Ask for a sweep test and, ideally, an impedance curve for each driver; a shifted resonance or a reading well away from the nominal 4 Ω points to a stressed or re-coned unit. Check the surround and spider for cracking, and confirm both drivers are a matched pair. On a used cabinet, mismatched drivers are a common sign of a field repair.
Cabinet condition matters as much as the electronics. The B22 is a horn-loaded design, so any air leak around the driver baffle, handle pockets or rear panel will cost you output and low-frequency extension. Inspect the corners, the rigging points and the grille for impact damage, and look for water staining or swollen ply — a real risk on cabinets that have worked outdoor festivals. Connectors are a frequent failure point: the 2 × Neutrik NL4 panels should be tight, with no play, corrosion or scorched pins from arcing.
A Grade A rating should mean the cabinet is fully functional with only light cosmetic wear. Ask the seller for photos of all four sides, the driver faces, the connector panel and any serial plate, plus a short video of the sub running. If the unit has been re-coned or the drivers replaced, get that in writing. For buyers comparing options across the range, our used pro audio subwoofers category is the place to check what else is available in the same shipment.
Logistics decide whether a B22 deal works. At 115 kg and roughly 0.44 m³ per cabinet, freight is a real share of landed cost, so confirm whether the price is FOB or delivered and whether the seller can palletise and crate properly. Buyers shipping mixed containers of used pro audio equipment for export should plan subwoofer placement early — heavy cabinets belong at the bottom, and the B22 footprint stacks predictably with most line array and point-source systems.
For rental companies and venue owners, the practical question is system fit. The B22 is typically deployed in multiples for large rooms and outdoor stages, so confirm the quantity available and whether the seller can supply matching cabinets from the same production run. If you are building a venue system around horn-loaded subs, our venue sound system solutions page covers configuration basics. Before committing, read our used subwoofer buying guide for the inspection checklist we use on every cabinet, and request test data rather than relying on the grade alone.
Questions about this unit or about shipping to your country? Contact us for condition photos, test results and a quote.
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