UM121

Subwoofer speaker

TECHNICAL DATA

Frequency band of use
(± 10 dB)

25 Hz - 110 kHz

SPL max at 1m

141 dB SPL (1)

Nominal directionality (H° x V°)

Omnidirectional

Nominal impedance

8 ohms

Transducers

Acoustic load


Amplification channels and sections

1 x 21'' (4.5" voice coil) Neodymium

Hybrid bandpass with profiled vents

1 channel, mono-amplified

Maximum number of speakers per DA8/ DA12 amplifier

DA8: 4x UM121
DA12: 8x UM121

Dimensions H,W,D (mm)
Weight (kg)
Connectors
IP

613 x 743 x 820 mm
70kg
2 x Speakon NL4MP (5)
43

UM121

The UM121 subwoofer features a 21-inch driver mounted in a hybrid load.

The rear section is a bass-reflex configuration with a contoured port that optimises roundness at the low end of the spectrum, delivering an impressive physiological effect. The horn driver at the front, meanwhile, offers a gain in efficiency at the higher frequencies of the bandwidth, allowing for greater dynamics and impact.

The use of a 21-inch loudspeaker combined with the large output surface area of the horn ensures a high, even sound level.

 

The UM121 has been designed to be used on the floor or suspended. Specific accessories enable it to be used above or alongside UM210 loudspeakers. Interaction between the UM121s or with the UM210 has been optimised: the result is uniform bass and compliance with the latest regulatory requirements for audience hearing protection.

FESTIVALS

CONCERTS

CONCERT HALLS

TV PANELS

ACCESSORIES & OPTIONS

UMTRUSS

Truss for Uniline Max (hook)

UMSTACK

Lightweight stacking accessory - UM121 and UC118i compatible

UMBAR

Extension bar for UMTRUSS hooks

UM121D2

Transport trolley for 2x UM121

UM121SCH2

Weatherproof cover for UM121D2 trolley

SC121

Weatherproof cover for 1x UM121

KR125

Kit of 4x Ø125mm castors

ELECTRONICS

DA8 and DA12 amplifiers

APG amplifier with DSP fixed or touring installation series

UNIRACK

Universal amplification solution

TOURACK

Universal amplification solution

DOWNLOADS

pdf document

UM121 data sheet

Zip file

GLL 03/2025

pdf document

EN_technical_datasheet_UM121

Zip file

GLL 03/2025