+44(0)1663 767888

Bosch LB20-SW400-D & LB20-SW400-L

Subwoofer cabinet speaker with 2 x 10" woofers. Black or White. Rated 400 watts @ 8 ohms.
Water resistant, rated IP54 / IP65.

Supplied and priced individually.

List price Ex. VAT: £669.03

* Required Fields


The Bosch LB20-SW400-D and LB20-SW400-L cabinet subwoofer loudspeaker features two 10" woofers and offers 400 watts power output at 8 ohms.

Water resistant, rated IP54 upgradable to a water resistance rating of IP65 through the use of the included port covers. Additionally, the speaker cabinet and grille are exceptionally resistant to sun, salt and moisture making it ideal for outdoor use.

The Bosch LB20SW400 subwoofer can be mounted horizontally or vertically thanks to the rotatable badge.

Supplied and priced individually.

Can be wall mounted using an optional 'U' shaped bracket.

The Bosch LB20 series is a new range of commercial loudspeakers can be  used indoors or outdoors. Superior quality ensures higher SPLs and maximum intelligibility. They are available in a range of sizes and different power offerings all acoustically and aesthetically matched. Please see the related products tab for other Bosch LB20 series loudspeakers.

Additional Information

Frequency response (-10 dB):

33 Hz - 500 Hz


94 dB2

Max. SPL (Calculated):

120 dB (126 dB Peak)

Power handling:

400 W (1600 W Peak) Continuous Pink Noise (100 hours)

Low Z:


Nominal impedance:

(2) 8 Ω (stereo mode); (1) 4 Ω (mono mode)

Recommended High-Pass:

40 Hz (24 dB/octave)

Input transformer (70 V/100 V):

Optional accessory

Transformer taps:

Optional accessory

LF transducer:

Two 10 inch (254 mm)


Two removable locking 4-pin connector (Euroblock) - Input and output. Max. wire size 12 AWG (2.5 mm).


IP-54 (per IEC-60529); IP-65 with port covers


Black (RAL 9004) or white (RAL 9003)

Dimensions (H x W x D):

356 mm x 651 mm x 491 mm (14.0 in x 25.6 in x 19.3 in)

Net weight:

17.9 kg (39.5 lb)

Shipping weight:

21 kg (46.3 lb)

Included hardware:

(2) Subwoofer feet, Allen wrench, weather input cover, (8) screws for the weather input cover, (2) IP65 port covers, (12) IP65 port cover screws

View FileBosch LB20 Series General Commercial Brochure    Size: (1018.82 KB)
View FileBosch LB20-SW400 Cabinet Subwoofer Datasheet    Size: (347.26 KB)
View FileBosch LB20-SW400 Cabinet Subwoofer Installation Manual, part 1    Size: (1 MB)
View FileBosch LB20-SW400 Cabinet Subwoofer Installation Manual, part 2    Size: (1.67 MB)
Product video for Bosch LB20-SW400-D & LB20-SW400-L
we recommend
Bosch LB20-PC60EW-5D & LB20-PC60EW-5L

Bosch LB20-PC60EW-5D & LB20-PC60EW-5L

List price Ex. VAT: £390.00
Bosch LB20-PC75-5D & LB20-PC75-5L

Bosch LB20-PC75-5D & LB20-PC75-5L

List price Ex. VAT: £284.00
Bosch LB20-PC40-4D & LB20-PC40-4L

Bosch LB20-PC40-4D & LB20-PC40-4L

List price Ex. VAT: £219.00
Bosch LB20-PC90-8D & LB20-PC90-8L

Bosch LB20-PC90-8D & LB20-PC90-8L

List price Ex. VAT: £495.00
Bosch LB20-PC30E-5D & LB20-PC30E-5L

Bosch LB20-PC30E-5D & LB20-PC30E-5L

List price Ex. VAT: £321.00