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Yamaha SR-B40A Soundbar

Yamaha SR-B40A Soundbar

By Yamaha · Soundbars · Desk & Streaming Setup · More from Yamaha

  • Output Power: 200 W (Front L/R: 50 W × 2-ch, Subwoofer: 100 W)
  • Dolby Atmos immersive audio support
  • Center unit dimensions: 35-7/8" × 2-5/8" × 5-1/4"
  • Wireless subwoofer included
  • HDMI eARC/ARC output and digital optical input

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Problems, parts and running costs

Summary

A 2.1-channel sound bar system with a separate wireless 6.25-inch subwoofer, built for small-to-mid rooms that want strong bass and clear dialogue from a TV. Check the connections before you buy: there is no Wi-Fi, no AirPlay, no DTS decoding and no analog input.

Strengths

  • Deep, controlled bass from a genuinely large 6.25-inch wireless subwoofer.
  • CNET scored it 8.2 and called its music and movie replay excellent.
  • Clear Voice mode handled dialogue most naturally in CNET’s Batman Begins test.
  • Punchier low end than the Polk S4 in CNET’s side-by-side listening.
  • HDMI eARC/ARC plus optical covers most TVs and disc players.
  • The subwoofer pairs wirelessly, so only one cable runs back to the TV.

Weaknesses

  • No Wi-Fi, AirPlay, MusicCast or network streaming; wireless music is Bluetooth only and prone to dropouts.
  • No DTS decoding, so DTS tracks fall back to other processing.
  • No analog input and no subwoofer output, so nothing can be added later.
  • Dolby Atmos is simulated rather than produced by height drivers.
  • Dolby Atmos is unavailable over the optical input.
  • Yamaha treats sound bars as non-field-serviceable, so warranty claims go through an exchange rather than a repair.

Verified specifications

ModelSR-B40A sound bar with SR-WSWB40A wireless subwoofer; the user guide names the bar SR-CUB40A.
Configuration2.1 channels, a bar plus a wireless subwoofer.
Rated output200 W total; front left and right 50 W each, subwoofer 100 W.
Driversbar front left and right 1.8-inch cone × 4 plus 1-inch dome tweeter × 2; subwoofer 6.25-inch.
Dolby Atmossupported, but simulated by processing; there are no up-firing drivers.
Audio formatsDolby TrueHD, Dolby Digital Plus, Dolby Digital; DTS is not supported.
Sound modesStereo, Standard, Movie, Game, plus Bass Extended and Clear Voice.
ConnectionsHDMI out (eARC/ARC) × 1, HDMI CEC, one digital optical input; no analog input and no subwoofer output.
Bluetoothversion 5.1, A2DP, SBC and AAC, range about 33 ft, with multipoint connectivity.
Network streamingno Wi-Fi, no AirPlay, no MusicCast Surround.
App controlYamaha Sound Bar Remote.
Dimensionsbar 35-7/8 × 2-5/8 × 5-1/4 in, 6.4 lbs; subwoofer 7-5/8 × 16-1/2 × 16 in, 17.9 lbs.
Power use25 W for the bar and 20 W for the subwoofer; standby 0.3 W or 0.6 W for the bar depending on HDMI control and Bluetooth standby, and 0.8 W for the subwoofer.
Standby figure in the user guide1.8 W or less.
In the boxsound bar, subwoofer, remote control with a CR2025 battery pre-installed, two power cords, a 1.5 m HDMI cable, mounting template and two spacers.
Mountingtabletop or wall-mounted using built-in keyholes.
Dolby Atmos does not play when the TV is connected by digital optical cable.
Firmware updates run through the dedicated UPDATE ONLY jack on the bar.
Full research notes and sources

Sound and performance

In a head-to-head with the Polk S4 on Oppenheimer, the Polk carried Nolan’s dialogue with more clarity, while the Yamaha’s larger subwoofer hit the blast sequence harder. On Mad Max: Fury Road both bars produced convincing height, with the Yamaha sounding more forceful and focused. Clear Voice was the most natural option on Batman Begins, and on Gorillaz’s “Feel Good Inc” the Yamaha pulled ahead with deeper, punchier bass. Yamaha rates the system at 200 W total, 50 W per front channel and 100 W for the subwoofer.

Dolby Atmos and supported formats

The Atmos effect is virtual. Yamaha’s processing creates the height impression, and the bar has no up-firing drivers to produce it physically. CNET calls it not “true” Dolby Atmos, and that is the honest description.

Formats covered are Dolby TrueHD, Dolby Digital Plus and Dolby Digital. DTS is not supported, so DTS soundtracks and tracks are handled by the other processing paths instead. Modes are Stereo, Standard, Movie and Game, with Bass Extended and Clear Voice available on top.

No independent lab measurements were published for this model. There is no published frequency response, maximum output level or latency data for the SR-B40A, so treat the CNET impressions as the only detailed test work available.

Connectivity and streaming

Inputs are limited to one HDMI eARC/ARC output with HDMI CEC and one digital optical input. There is no analog input for older gear and no subwoofer output, so you cannot add a second subwoofer later. Bluetooth 5.1 with SBC and AAC covers roughly 33 ft and supports multipoint, but with no Wi-Fi there is no AirPlay, no MusicCast and no network streaming. Wireless music comes through Bluetooth alone, and that path is the one prone to dropouts. The Dolby Atmos picture also needs HDMI, because the optical path has no Atmos at all.

Running costs, warranty and service

Standby draw is small but not zero: 0.3 W for the bar with HDMI control and Bluetooth standby off, 0.6 W with both on, and 0.8 W for the subwoofer. The user guide separately lists standby consumption as 1.8 W or less, a figure that appears to come from a different guide revision. Running draw is 25 W for the bar and 20 W for the subwoofer. The only consumable is the remote’s CR2025 battery, and there are no other parts to replace.

Yamaha’s US A/V warranty document assigns a 2-year term to powered loudspeakers and speaker systems, the category a sound bar such as this falls under. The same company’s warranty information page treats sound bars as non-field-serviceable and handles them through a Yamaha exchange program while they remain within the limited warranty period, and coverage applies only to units bought from authorized US dealers. No SR-B40A-specific warranty card was available to confirm the exact term printed for this model.

Which model this is

The Yamaha SR-B40A is the 2023 2.1-channel bar-and-subwoofer system. Yamaha launched it at $399.95 in August 2023. The included subwoofer is model SR-WSWB40A, the user guide names the bar internally SR-CUB40A, and some Yamaha documents group the product under the code ATS-B400.

The listing for this model is ASIN B0CCCZ236Y. Do not confuse it with the SR-B30A, a different all-in-one bar with two built-in subwoofers and a subwoofer output.

At the launch MSRP, the missing pieces are common elsewhere in the class: Wi-Fi streaming, DTS decoding, an analog input and a subwoofer output. The honest case for this one is a small-to-mid room where a large wireless subwoofer and readable dialogue matter more than network features or true height channels. Nothing in the test record measures the SR-B40A objectively, so judge it on the CNET impressions and on how loud your TV actually runs.

Sources

Manufacturer:

Independent reviews:

Owner reports:

  • No independent owner reports were available for this model.

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