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Eight black rectangular speakers with silver cones and mounting brackets

Acoustic Audio

Acoustic Audio 251B indoor outdoor 3-way speakers 1600 W black 4-pair pack

SKU CH-5SVD-K9E4F

Eight weatherproof 3-way indoor/outdoor speakers deliver 37 Hz–20 kHz frequency response with 99 dB sensitivity and 1600 W total power handling

  • TypeIndoor/Outdoor Speakers
  • Weatherproof cabinets withstand rain, snow, sun and ice
  • 3-way driver array covers 37 Hz to 20 kHz full-range sound
  • 99 dB sensitivity produces big volume from modest amplifier power
  • Eight passive speakers driven by any amp delivering 20 to 300 watts per channel
  • U-brackets with hardware enable quick indoor or outdoor mounting

Eight-speaker indoor outdoor set

The Acoustic Audio 251B pack supplies eight passive speakers designed for indoor and outdoor use. Each unit uses a three-way layout with a 4-inch silver poly woofer, a 2-inch Mylar dome midrange and a 0.5-inch Mylar dome tweeter. Black ABS sealed cabinets resist rain, snow, sun and ice. The set suits whole-house audio, home theatre surrounds or commercial background music.

Spring-loaded terminals and U-brackets

Spring-loaded raw-wire terminals accept stripped speaker cable without tools. Included U-shaped mounting brackets and hardware let you fix each cabinet to walls or ceilings. The installer must supply an amplifier or receiver delivering between 20 and 300 watts per channel and CL3 or raw speaker wire. No active electronics or wireless link are built in.

37 Hz to 20 kHz at 99 dB sensitivity

Frequency response spans 37 Hz to 20 kHz with a rated sensitivity of 99 dB at 8 ohms. Under continuous programme material the drivers handle the full bandwidth without the compression that short bursts can hide. Cabinets measure 7.375 by 4.625 by 4.125 inches each, so extended output relies on adequate amplifier headroom rather than large enclosure volume.

Highlights

  • Weatherproof cabinets withstand rain, snow, sun and ice
  • 3-way driver array covers 37 Hz to 20 kHz full-range sound
  • 99 dB sensitivity produces big volume from modest amplifier power
  • Eight passive speakers driven by any amp delivering 20 to 300 watts per channel
  • U-brackets with hardware enable quick indoor or outdoor mounting

Specifications

BrandAcoustic Audio by Goldwood
TypeIndoor/Outdoor Speakers

Questions about this item

How can I verify the 251B speakers are performing correctly after installation?

Play test tones across the 37 Hz to 20 kHz range and confirm each 3-way driver produces clear output without distortion when driven within the 20 to 300 watts per channel specification.

What components are included with the 251B 4-pair pack and what must I supply?

The box contains eight passive speakers, mounting brackets with hardware and an instruction manual; you must provide an amplifier or receiver with raw speaker wire outputs and CL3 or raw speaker wire for the connections.

Which power rating should I match my amplifier to for the 251B speakers?

Choose an amplifier that delivers between 20 and 300 watts per channel at 8 ohms to stay within the speaker's recommended operating range and avoid damage.

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