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QS_BASSO21_EN_

v3.3

BASSO

21

21˝ High Performance Direct Radiation Professional Subwoofer

QuickStart Guide

Many key factors are to be considered when configuring the subwoofer section 
of a loudspeaker system to perfectly match each application: size/weight, 
logistic and operational setups, SPL needs, LF extension, cost limitations, as well 
as sound engineer preferences (depending on different the type and size of the 
event) or audio program characteristics and regional style taste for subwoofer 
mixes.

BASSO

 Series models allow the user to choose the most adequate subwoofer 

for any given situation from within a family of products with common finish, 
design solutions and performance philosophy as well as shared rigging and 
transport accessories.

BASSO

21 is a high-density single 18˝ direct radiation subwoofer that delivers 

a very natural, linear response in the VLF range from 25 Hz up to 140 Hz. 
Built with 18’’ Premium birch plywood and fitted with a 2 mm steel grille, 
this medium format medium format cabinet is finished with IDEA Aquaforce 
weatherized coating to endure life on the road or stylishly integrate in any 
installation.

BASSO

21 seamlessly matches with 2-way loudspeakers in 

LUA

 and 

EXO

 Series 

maximizing the high-density performance of these systems for a wide range 
of portable, mobile and install professional sound reinforcement applications, 
from high power club sound systems and medium size live music events to 
rental and touring companies.

BASSO

21 can be (on demand) served with 

BASSO

 rigging structures, allowing 

for stacked and flown configurations.

+/- 1 

Subwoofer Signal

+/- 2 

Parallel Signal

NL-4 PINOUT:

SYSTEM CONFIGURATION AND SETTINGS

RECOMMENDED SETTINGS

BASSO

21 back panel is fitted with a pair of Neutrik NL-4 connectors in 

parallel for straightforward, flexible installation setup.

BASSO

21

Setup of this product should be 

implemented by qualified 

professionals following safe 
practices and local regulations. 
Refer to the owner's manuals for 
instructions, system components 
and setup operations for this 
product.

PARALLEL I/O

A

B

PARALLEL I/O

PRODUCT OF EUROPE

Made in Spain

Designed, engineered
and manufactured by
IDEA in Cedeira (Galicia)

Nominal Impedance: 8 Ohm

Recommended amplifier power:

1500/3000 W

Subwoofer Signal

Parallel Signal

NL-4 PINOUT

Type

Freq

Q

Gain

Bell

50 Hz

3.0

-1.30

High Pass

20 Hz

0.8

--

Low Pass

80 Hz

0.8

--

HPF:

25 Hz

Butterworth 24dB

LPF:

60 Hz

Butterworth 24dB

LPF@ 65 Hz

Type

Freq

Q

Gain

Bell

60 Hz

3.0

-2.20

High Pass

20 Hz

0.8

--

Low Pass

98 Hz

0.8

--

HPF:

25 Hz

Butterworth 24dB

LPF:

70 Hz

Butterworth 24dB

LPF@ 80 Hz

Type

Freq

Q

Gain

Bell

66 Hz

2.5

-3.50

High Pass

20 Hz

0.8

--

Low Pass

120 Hz

0.8

--

HPF:

25 Hz

Butterworth 24dB

LPF:

85 Hz

Butterworth 24dB

LPF@ 100 Hz

Type

Freq

Q

Gain

Bell

80 Hz

2.0

-4.50

High Pass

20 Hz

0.8

--

Low Pass

140 Hz

0.8

--

HPF:

25 Hz

Butterworth 24dB

LPF:

101 Hz

Butterworth 24dB

LPF@ 120 Hz

Summary of Contents for BASSO21

Page 1: ...fessional sound reinforcement applications from high power club sound systems and medium size live music events to rental and touring companies BASSO21 can be on demand served with BASSO rigging structures allowing for stacked and flown configurations 1 Subwoofer Signal 2 Parallel Signal NL 4 PINOUT SYSTEM CONFIGURATION AND SETTINGS RECOMMENDED SETTINGS BASSO21 back panel is fitted with a pair of ...

Page 2: ...ctive foam Finish Durable IDEA proprietary Aquaforce paint coating process Handles 4 integrated handles Feet Skates 4 rubber feet Installation 36 mm Pole mount socket Accessories Riggin Frame RF 600 Riggin System RS BASSO L Wheels WH 04 35 mm Pole K M 21336 TECHNICAL DATA TECHNICAL DRAWINGS 950 mm 600 mm 600 mm BASSO21 This product must be installed and or operated by qualified professionals follo...

Page 3: ...ied and authorized personnel No user serviceable parts inside Only use accessories tested and approved by IDEA and supplied by the manufacturer or an authorized dealer Installations rigging and suspension operations must be done by qualified personnel Only use accessories specified by IDEA complying with maximum loads specifications and following local safety regulations Read the specifications an...

Page 4: ...t detail basso21 QS_BASSO21_EN_v3 3 www ideaproaudio com IDEA is always in pursuit of better performance greater reliability and design features Technical specifications and minor finish details may vary without notice in order to improve our products 2020 I MAS D Electroacústica SL Pol A Trabe 19 20 15350 Cedeira Galicia Spain ...

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