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Three pairs of compact black bookshelf speakers with dual 4-inch woofers and a soft dome tweeter

Acoustic Audio

Acoustic Audio AA40CB 3 Pair Pack home audio speaker

SKU CH-SZH4-KAKMK

Six passive bookshelf speakers with dual 4" woofers and 1" tweeters deliver 94Hz-20kHz frequency response for home theater or whole-house audio

  • TypeCenter Channel Speaker
  • Passive design works with any amplifier or receiver
  • 2-way configuration with two 4" woofers and 1" tweeter
  • Frequency response 94 Hz to 20 kHz at 94 dB
  • Six speakers included for full surround-sound setups
  • Compact sealed cabinets measure 5.75" x 15.625" x 5.75" each

Six-speaker bookshelf system

The Acoustic Audio AA40CB pack supplies six passive bookshelf speakers for surround-sound or distributed-audio installations. Each unit uses a two-way design with a 1" soft-dome tweeter and two 4" polypropylene woofers in a sealed black ABS cabinet. The speakers present an 8-ohm load and a 94 dB sensitivity rating, so they work with a wide range of amplifiers and receivers. Buyers who need powered or wireless speakers will not be served by this set.

Sustained output and thermal behaviour

The manufacturer rates the system at 3000 watts peak, while the per-channel recommendation is 20 to 250 watts from the driving amplifier. Because the cabinets are sealed and the drivers are polypropylene, thermal compression during long listening sessions remains predictable within that power window. Frequency response spans 94 Hz to 20 kHz, so extended playback stays balanced without a separate subwoofer for many content types. Listeners who demand reference-level SPL in large rooms may find the 94 Hz low-frequency limit restrictive.

Cabinet construction and daily connectivity

Each speaker measures 5.75" high by 15.625" wide by 5.75" deep, fitting standard shelves while housing dual woofers. Spring-loaded raw-wire terminals accept CL3 or bare speaker cable for quick, tool-free installation. The sealed enclosure eliminates port noise and simplifies placement near walls or in cabinetry. Installers who require banana-plug or binding-post terminals will need a different connector style.

Highlights

  • Passive design works with any amplifier or receiver
  • 2-way configuration with two 4" woofers and 1" tweeter
  • Frequency response 94 Hz to 20 kHz at 94 dB
  • Six speakers included for full surround-sound setups
  • Compact sealed cabinets measure 5.75" x 15.625" x 5.75" each

Specifications

BrandAcoustic Audio
TypeCenter Channel Speaker

Questions about this item

How much power does each AA40CB speaker draw from the amplifier during extended daily use?

Each passive speaker requires an amplifier delivering between 20 and 250 watts per channel; the speakers themselves draw no power independently and produce no heat or fan noise.

Which amplifier or receiver connections are needed to drive the six AA40CB speakers?

Any amplifier, home receiver or stereo with raw speaker wire outputs is required; you must also supply CL3 or raw speaker wire for the spring-loaded connectors on each cabinet.

Will the AA40CB's 94 Hz low-frequency limit integrate with an older subwoofer that handles bass below that point?

The speakers reproduce frequencies down to 94 Hz, so a subwoofer covering lower frequencies can fill the gap; set the receiver's crossover near 94 Hz for a smooth transition.

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