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Three compact black cube speakers with mounting brackets

Acoustic Audio

Acoustic Audio AA321B 600W 3-Piece On-Wall Speaker Set

SKU CH-AZGV-RG7R9

Three passive on-wall speakers with 2.5" woofers, 150 Hz–20 kHz response and 88 dB sensitivity, supplied with mounting brackets

  • TypeOn-Wall Speakers
  • Compact 3.5" cabinets fit tight spaces
  • 5" polypropylene woofers deliver full-range sound
  • 88 dB sensitivity works with 20-200 W amps
  • Omni-directional brackets simplify wall mounting
  • 600 W peak power for home theater impact

Compact On-Wall Speaker Set

This three-piece Acoustic Audio AA321B set mounts flush to interior walls and draws power from any compatible amplifier or receiver. Each cabinet houses a 2.5" polypropylene woofer that covers a frequency range of 150Hz to 20 kHz at 88dB sensitivity and 8-ohm impedance. The sealed black ABS enclosures measure 3.5" x 3.5" x 4.5" and terminate in spring-loaded raw-wire connectors for quick installation.

Ideal for Multi-Room and Surround Installations

Home-theatre enthusiasts and whole-house audio installers will appreciate the omni-directional brackets that simplify placement in living rooms, hallways or commercial spaces. The passive design requires a separate amp delivering between 20 and 200 watts per channel, so buyers without an existing receiver or those seeking a self-powered Bluetooth solution should look elsewhere. Outdoor or weather-exposed mounting is not supported.

Amplifier Power Match Decides Suitability

The single specification that determines whether this set works in your system is the amplifier’s continuous output per channel, which must fall between 20 and 200 watts into 8 ohms. If your receiver sits outside that window the speakers will either be under-driven or risk damage, making the power match the decisive factor before purchase.

Highlights

  • Compact 3.5" cabinets fit tight spaces
  • 5" polypropylene woofers deliver full-range sound
  • 88 dB sensitivity works with 20-200 W amps
  • Omni-directional brackets simplify wall mounting
  • 600 W peak power for home theater impact

Specifications

BrandAcoustic Audio by Goldwood
TypeOn-Wall Speakers

Questions about this item

How do I mount the 3.5" x 3.5" x 4.5" speakers and what step is often missed?

Use the included omni-directional brackets and hardware to fix each speaker to the wall; the step people skip is confirming the amplifier delivers between 20 and 200 watts per channel before connecting the raw speaker wire.

What part of the AA321B set will need attention or replacement over time?

The spring-loaded raw wire connectors on the black ABS cabinets may loosen with repeated cable changes, so check and reseat the speaker wire periodically to maintain a solid connection.

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

The 150 Hz low-frequency cut-off means bass output drops off early, so sustained high-level playback will hit that frequency response floor before the 88 dB sensitivity or 600 watt peak rating becomes an issue.

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