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Seven black bookshelf speakers in sealed cabinets with dual 4" woofers and 1" soft dome tweeters

Acoustic Audio

Acoustic Audio AA40CB 7 Speaker Set home audio speaker

SKU CH-5S69-V3Y33

Seven passive bookshelf speakers deliver 94 Hz–20 kHz frequency response and 94 dB sensitivity at 8 ohms, handling 20–250 watts per channel for home theatre or whole-house audio

  • TypeCenter Channel Speaker
  • Passive design connects directly to any amplifier
  • 94 Hz – 20 kHz frequency response covers full range
  • Two 4″ woofers plus 1″ soft-dome tweeter per speaker
  • 20 – 250 W per channel amplifier power range
  • Compact 5.75″ × 15.625″ × 5.75″ cabinets fit tight spaces

Seven-Speaker Home Theater Set

The Acoustic Audio AA40CB is a seven-piece passive speaker package built for surround-sound installations in living rooms, whole-house audio zones or commercial spaces. Each cabinet houses two 4-inch polypropylene woofers and a 1-inch soft-dome tweeter in a two-way layout. The system draws power from any amplifier or receiver with raw speaker-wire outputs rated between 20 and 250 watts per channel. Buyers who need powered speakers or wireless streaming should look elsewhere.

Wired Passive Connectivity

The box contains seven identical bookshelf speakers and an instruction manual; no cables, wall brackets or calibration microphone are supplied. Spring-loaded raw-wire terminals on each cabinet accept CL3 or bare speaker wire for a permanent, tool-free connection. Because the speakers are passive, the amplifier you choose determines volume headroom, tonal balance and any room-correction processing. Installers who expect HDMI, optical or Bluetooth inputs will not find them here.

Compact Sealed Cabinets

Black ABS sealed enclosures measure 5.75 by 15.625 by 5.75 inches each, allowing placement on shelves, stands or wall mounts without a large footprint. The sealed alignment yields a frequency response of 94 Hz to 20 kHz at 94 dB sensitivity and 8-ohm nominal impedance. Cabinets are not weather-rated, so outdoor or humid environments must be avoided. Users who require deeper bass extension below 94 Hz will need a separate subwoofer.

Highlights

  • Passive design connects directly to any amplifier
  • 94 Hz – 20 kHz frequency response covers full range
  • Two 4″ woofers plus 1″ soft-dome tweeter per speaker
  • 20 – 250 W per channel amplifier power range
  • Compact 5.75″ × 15.625″ × 5.75″ cabinets fit tight spaces

Specifications

BrandAcoustic Audio
TypeCenter Channel Speaker

Questions about this item

Will the spring-loaded raw wire connectors need tightening or replacement over time?

The spring-loaded raw wire connectors on each cabinet are designed for a secure fit; periodic inspection and re-seating of the bare wire ends is the only maintenance typically required.

What is the first limit reached when the speakers run at high volume for long periods?

The 250 watts per channel power handling ceiling is the first limit; exceeding it risks driver damage before any thermal protection activates.

How much heat or noise do the cabinets produce during all-day playback?

Passive cabinets generate no fan noise and negligible heat; only the connected amplifier produces measurable warmth during extended use.

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