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B-series · Subwoofer

B21

21"

↓ Datasheet
138.5 dB
Peak SPL
31 Hz – 100 Hz
Max frequency range
Omni
Coverage
1-ch DSP
Filter
46 kg
Weight
Description

Compact subwoofer.

21" bass reflex design. Maintained low frequency performance at full power. Stackable in omni & cardioid setup. Mounting points for fixed installation. 2x NLT4 on the rear, 1x NL4 on the front. M20-pole mount on top.

2x ergonomic handles, 1x on the left, 1x on the right. Rubber feet for stability on the bottom. Optional front lid. Transport wheels mountable on rear and on optional front lid. Truck size cabinet for efficient transportation.

Construction — Birch plywood enclosure · Durable hybrid coating, resistant to wear, impact, and weathering · Klotz internal wiring · Neutrik speakON® connectors · Powder coated steel grille with acoustically transparent fabric on the back.

All Quint Audio loudspeakers are designed for use in combination with Quint Audio processors & amplifiers. All Quint Audio loudspeaker presets are matched in level and phase at the crossover frequency for easy mix & match. Factory system presets available.

Specifications

Specifications.

Measurements conform to AES75, carried out with P9 processor and A42 amplifier. Values are scaled to 1 m free field.

Overview

TypeSubwoofer
Components21"
ApplicationTouring & Installation
SeriesB-series

Acoustic output

Peak SPL* / freq. range (-6dB)138.5dB / 31Hz-100Hz
Max SPL* / freq. range (-6dB)127dB / 31Hz-100Hz
Dispersion (HxV)Omni

Connectivity

Connections3x 4-pole speakON
Impedance4 Ohm
Filter1-channel DSP control

Physical

Size (WxHxD)580 x 585 x 680mm
Weight46kg
Downloads

Files for the B21.

4 files · last updated 17 jul 2026
PDF Datasheet — B21 649.1 KB View ↓ Download
PDF Whitepaper · B-series 110 KB View ↓ Download
PDF Accessories · B-series 769 KB View ↓ Download
GLL EASE 5 data 60 MB View ↓ Download
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