We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Monolith B4 bookshelf speaker with silk dome tweeter in waveguide, vinyl wrapped MDF cabinet

Monoprice Inc.

Monoprice Inc. Monolith B4 Bookshelf Speaker 143159 home audio speaker

SKU CH-RED5-RWW20

A bookshelf speaker with a 20mm silk dome tweeter in a waveguide, rigid woofers and braced MDF cabinets for accurate midrange and punchy bass

  • TypeHome Theater Speaker System
  • FeaturesTweeter Waveguide: Silk Dome Tweeter. Distinctive Look. A 20
  • Wider stereo sweet spot from 20 mm silk dome tweeter in custom waveguide
  • Clear midrange and punchy bass from lightweight rigid woofers
  • Reduced cabinet colouration via thick internal bracing in MDF enclosure
  • Quick installation using dual five-way binding posts
  • Distinctive waveguide design adds sleek appearance to any room

Monolith B4 Bookshelf Speaker

The Monolith B4 is a passive bookshelf speaker designed for stereo or home-theatre systems. It uses a 20mm silk dome tweeter mounted in a custom waveguide to widen dispersion and improve imaging. Dual 5-way binding posts accept bare wire, spades or banana plugs for straightforward amplifier connection.

Listeners wanting accurate midrange and punchy bass

This model suits buyers who want transparent midrange and quick, punchy bass from a compact cabinet. It is not for listeners who need a powered speaker with built-in amplification or wireless streaming. Buyers seeking a complete surround package from a single box should look at multi-speaker sets instead.

20mm silk dome tweeter with waveguide

The 20mm silk dome tweeter inside a large, customised waveguide is the specification that defines this speaker's high-frequency dispersion and sweet-spot width. If your system requires a different tweeter design or a larger driver for higher output, this unit will not match those requirements.

Highlights

  • Wider stereo sweet spot from 20 mm silk dome tweeter in custom waveguide
  • Clear midrange and punchy bass from lightweight rigid woofers
  • Reduced cabinet colouration via thick internal bracing in MDF enclosure
  • Quick installation using dual five-way binding posts
  • Distinctive waveguide design adds sleek appearance to any room

Specifications

BrandMonoprice
Model143159
Part Number143159
TypeHome Theater Speaker System
FeaturesTweeter Waveguide: Silk Dome Tweeter. Distinctive Look. A 20mm soft dome tweeter sits inside a large, customized waveguide for better dispersion, a wider sweet spot for stereo listening, and spectacular imaging. The distinctive waveguide enhances tweeter performance, and gives the speaker a sleek appearance in any room.

Questions about this item

Does the Monolith B4 143159 include speaker wire or do I need to buy it separately?

The speaker uses dual 5-way binding posts for connection; speaker wire is not included and must be purchased separately.

Which version of the Monolith B4 143159 should I choose for a stereo pair?

This model is sold as a single bookshelf speaker, so you would need to buy two units for a stereo pair.

How does the 20mm silk dome tweeter waveguide affect imaging in a typical living room?

The custom waveguide widens dispersion, creating a broader sweet spot and more precise stereo imaging from the listening position.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.