Peavey

Peavey SP4 Unpowered Speaker Cabinet

5.0 (9 reviews)
15 inch4 inch

Superior Sound Reinforcement with the Peavey SP4 Speaker Cabinet The Peavey SP4 unpowered speaker cabinet delivers exceptional audio performance with its innovative 3-way design. Experience enhanced low-end response and crystal-clear high frequencies. Equipped with two 15-inch Peavey Black Widow ...

$999.99*
In Stock on Amazon.com
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*Price sourced from Amazon.com. Last updated:Jun 28, 2026.Price and availability are subject to change.

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Overview

Superior Sound Reinforcement with the Peavey SP4 Speaker Cabinet

The Peavey SP4 unpowered speaker cabinet delivers exceptional audio performance with its innovative 3-way design. Experience enhanced low-end response and crystal-clear high frequencies. Equipped with two 15-inch Peavey Black Widow speakers, this cabinet handles up to 4000 watts peak power. The RX22 titanium driver, combined with Peavey's Quadratic Throat Waveguide technology, ensures optimal sound projection and reduced distortion. Its rugged Baltic birch construction provides durability and tighter bass response.

Specifications:

  • System Type: Quasi-three-way, full-range, bi-ampable
  • High Frequency Driver: RX 22 compression driver with Ferro fluid cooling
  • Low Frequency Drivers: Two 15 inch BWX Black Widow 4 inch VC woofers
  • Enclosure: Rugged 9-ply Baltic birch construction
  • Finish: Durable Hammerhead spray-on bed liner
  • Power Handling: Up to 4000 watts peak power
  • Crossover: Efficient crossover directs low frequencies to both woofers, midrange to top woofer
  • Waveguide: Quadratic Throat Waveguide technology

Key Features

Quasi-three way full-range/bi-ampable Sound Reinforcement system

Two 15 inch BWX Black Widow 4 inch VC woofers

RX 22 compression driver with Ferro fluid cooling

Package Weight: 43.544 kilograms

Specifications

Speaker Type
Unpowered Sound Reinforcement System
Configuration
Quasi-three-way, Full-range, Bi-ampable
Low-Frequency Drivers
2x 15-inch BWX Black Widow Woofers (4-inch Voice Coil)
High-Frequency Driver
RX 22 Compression Driver with Ferro fluid cooling

Pros & Cons

👍 Pros

  • Features a quasi-three-way design for comprehensive sound reproduction across frequencies.
  • Includes two 15-inch BWX Black Widow woofers with 4-inch voice coils for robust bass.
  • Equipped with an RX 22 compression driver featuring Ferro fluid cooling for reliable high-frequency performance.
  • Offers bi-ampable functionality, allowing for more precise power distribution and sound control.
  • Designed as a full-range sound reinforcement system, suitable for various audio applications without additional speakers.

👎 Cons

  • As an unpowered speaker cabinet, it requires an external amplifier, adding to the overall system cost and complexity.
  • The "quasi-three-way" design might not offer the same level of distinct frequency separation as a true three-way system.
  • Specific power handling capabilities, such as RMS or peak wattage, are not provided, making amplifier matching challenging.
  • The overall dimensions and weight are not detailed, which could impact portability and placement considerations.
  • The lack of integrated amplification means additional cables and setup are needed to operate the speaker.

Frequently Asked Questions

The Peavey SP4 is an unpowered speaker cabinet, meaning it is passive and requires an external amplifier to operate.
It features two 15-inch BWX Black Widow woofers with 4-inch voice coils for low frequencies and an RX 22 compression driver with Ferro fluid cooling for high frequencies.
Yes, the Peavey SP4 is designed to be bi-ampable, allowing separate amplification for different frequency ranges for potentially improved sound clarity and control.
"Quasi-three-way" indicates that the speaker handles frequency division similarly to a three-way system, but typically uses fewer crossovers or drivers to cover the full frequency spectrum compared to a true three-way design.
While it is a sound reinforcement system, specific ingress protection ratings for outdoor use are not mentioned, so suitability for outdoor events would depend on environmental conditions and additional protection.