Detail 01
Aluminum shell
Metal is brighter and louder than wood with a faster attack, and it doesn't shift with humidity or temperature.

Independent shopping perspective
An 18-inch aluminum surdo with legs — the low bass drum that anchors samba. For batucada groups and percussionists playing a floor-mounted drum.

Strong match
Consider the trade-offs
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 01
Metal is brighter and louder than wood with a faster attack, and it doesn't shift with humidity or temperature.
Detail 02
The middle surdo voice — deep enough to carry the bass line without the bulk of a 20 or 22.
Detail 03
Depth pushes the fundamental lower and stretches the note out, so each hit hangs longer under the ensemble.
Detail 04
The drum stands at playing height on the floor, so nothing hangs off your shoulder during a long rehearsal.
Detail 05
Bare metal look. Hand marks and scuffs show more than on a wrapped or lacquered wood shell.
Detail 06
Full-size ensemble drum pricing rather than student-drum pricing, which tracks with the size and metal shell.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
It's the bass drum of samba. It marks the pulse underneath the ensemble while the higher percussion plays the pattern on top.
No. It stands on its own legs at playing height, so you play it floor-mounted rather than carried.
Different, not better. Aluminum is brighter, louder and immune to humidity. Wood is warmer and rounder with less metallic ring.
18 inch is the middle voice — deeper and fuller than a 16, less overwhelming in a small group than a 20 or 22.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.