Description

Bosch LB20-SW400-L Dual 10″ White Cabinet Subwoofer for PA and Music Systems


The Bosch LB20‑SW400‑L is a dual 10‑inch subwoofer in a white cabinet, designed to enhance low‑frequency performance in public‑address, background‑music, and live‑sound installations. It delivers deep, controlled bass to complement full‑range speaker systems, making it ideal for venues where powerful, high‑quality low‑end sound is required — such as clubs, halls, event spaces, or large commercial areas.

Features of Bosch LB20-SW400-L

  • Dual 10″ (250 mm) long‑throw woofers for enhanced bass and sub‑bass output
  • White cabinet enclosure — suitable for venues requiring a clean aesthetic
  • High power handling capacity for demanding audio applications
  • Front‑firing design for consistent bass dispersion and even coverage
  • Low‑frequency extension to support music playback and PA low‑end reinforcement
  • Compatible with 8 Ω amplifier outputs — direct connection without transformers
  • Suitable for floor standing or stage placement, adaptable to different environments
  • Can be combined with full‑range speakers for full‑spectrum sound systems
  • Durable construction for repeated use in public, commercial, or event settings
  • Reliable performance for background music, live events, and public announcements needing strong bass presence

Applications of Bosch LB20-SW400-L

  • Nightclubs, bars, and entertainment venues
  • Theaters, auditoria, and event halls
  • Large retail outlets, shopping malls, and commercial complexes
  • Hotels, restaurants, and hospitality venues
  • Conference rooms, ballrooms, and banquet halls
  • Churches, community centers, and public venues
  • Live music or DJ setups requiring strong bass reinforcement

 

Specifications of Bosch LB20-SW400-L

ModelBosch LB20‑SW400‑L
Speaker TypeDual‑woofer cabinet subwoofer
Woofers2 × 10″ (250 mm) long‑throw drivers
Impedance8 Ω nominal
Power Handling (Continuous)200 W RMS (per manufacturer recommendation)
Power Handling (Peak)800 W peak (music/transient bursts)
Frequency Response30 Hz – 250 Hz (approximate sub‑bass range)
Sensitivity (1 W / 1 m)≈ 95 dB (sub‑bass range)
EnclosureWhite, robust cabinet construction
MountingFloor‑standing or stage placement
Dimensions (H × W × D)Approx. 550 × 450 × 400 mm
WeightApprox. 22 kg
Use CasesPA systems, live sound, music playback, sub‑bass reinforcement, events and installations
Recommended Amplifier Power250–400 W per channel at 8 Ω for optimal performance

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