Used Adamson T21
Used Adamson T21 subwoofers deliver deep, resonant bass performance suited to concerts, festivals and large-scale live sound applications. Second-hand T21 units are a well-established choice among touring and event professionals seeking reliable low-frequency reinforcement. Browse the current used Adamson T21 listings available below to find the right unit for your setup.
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Adamson T21 specifications
| Brand | Adamson |
| Segment | Audio |
About the Adamson T21
The Adamson T21 is a professional subwoofer designed for demanding live sound environments, including concerts, festivals and events. Known for its deep bass response, the T21 is commonly paired with Adamson line array tops as part of larger speaker systems serving medium to large venues. In typical use, the T21 is driven by high-output amplifiers and integrated into processed, amplified rigs. Its reputation as a rider-friendly sub has made it a durable fixture in touring and event production around the world.
Adamson T21 — buyer FAQs
What is the Adamson T21 and what is it used for?
The Adamson T21 is a professional subwoofer built for live sound applications including concerts, festivals and events. It is designed to deliver deep bass reinforcement as part of larger speaker systems serving medium to large venues. Used units appear regularly in touring and event production rigs, often deployed in multiples of four or eight to provide the low-frequency output required at scale.
Who makes the Adamson T21 and where does it sit in the product range?
The T21 is made by Adamson Systems Engineering, a Canadian loudspeaker manufacturer that designs sound reinforcement systems for touring, festivals and permanent installations. Within the Adamson range the T21 functions as a subwoofer, complementing the company's line array tops. Used packages show it paired with models such as the Y10 and Y18, forming complete systems suited to medium and large venue applications.
What speakers is the Adamson T21 typically paired with?
The T21 subwoofer is commonly used alongside Adamson line array tops. Used system packages show it deployed with the Adamson Y18 and Y10 series, forming full-range rigs for concerts and events. In those configurations the T21 handles low-frequency duties while the tops cover mid and high frequencies, with amplification and processing provided by separate rack-mounted units.
What amplification is typically used with a second-hand Adamson T21?
Used T21 packages are frequently configured with high-output amplifiers. One arrangement pairs four T21 subwoofers with four Lab Gruppen FP7000 amplifiers, rated at 3500 watts RMS at 2 ohms per unit. Larger system packages have included Lake and XTA processing racks alongside amplification brands such as Lab Gruppen, providing a complete processed and amplified solution ready for deployment.
What should I check when buying a used Adamson T21?
Confirm that all speaker drivers and cones are fully operational, and check the condition of foams and grilles, which are wear items on regularly used subwoofers. Clarify whether dollies and covers are included, as these vary by package. Note whether amplification is part of the deal or sold separately. Every listing on 10K Used carries a 21-day warranty covering major functional faults; full details are in the buying guide at https://www.10kused.com/used-av-equipment-guide/.
