Wharfedale Pro WLA-28SUB | Dual 15in - 145dB | Flyable Passive Subwoofer

Wharfedale Pro WLA-28SUB | Dual 15in - 145dB | Flyable Passive Subwoofer

$1,797.99

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Passive Line Array Subwoofer

Wharfedale Pro WLA-28SUB is a dual 15-inch passive subwoofer designed for high-impact low-frequency reinforcement in WLA-28X touring and installation systems. With flyable rigging, birch plywood construction, and 145 dB max SPL, it provides powerful bass support for large-scale sound applications.

Wharfedale Pro WLA-28SUB Competitive Differences

Dual 15-inch LF drivers with 4-inch voice coils
1200W continuous, 2400W program, and 4800W peak power handling
145 dB max SPL at 1 m in half-space conditions
Flyable or ground-deployable design with integral 3-point rigging

Wharfedale Pro WLA-28SUB Description

The Wharfedale Pro WLA-28SUB is built for professional low-frequency reinforcement in touring rigs, venues, and installed WLA-28X systems. Its bass-reflex enclosure houses two 15-inch ferrite LF drivers, each with a 4-inch voice coil, delivering controlled output for demanding live sound environments.

With 1200W continuous power handling, 2400W program power, and 4800W peak capacity, this passive subwoofer provides the headroom needed for high-output applications. Its 4 ohm system impedance, 108 dB sensitivity, and 39 Hz low-frequency response help extend system impact while maintaining efficient performance.

The enclosure is constructed from birch plywood with a black Tough-Tone finish and a black steel grille for road-ready durability. Integral rigging hardware allows the subwoofer to be flown within compatible arrays or used on the ground, making it suitable for both touring productions and fixed installations.

WLA-28SUB Features

Passive dual 15-inch subwoofer for WLA-28X systems
Bass-reflex enclosure configuration
2 x 15-inch LF drivers with ferrite magnets
4-inch LF voice coils
1200W continuous system power handling
2400W program power handling
4800W peak power handling
145 dB max SPL at 1 m in half-space conditions
39 Hz - 900 Hz frequency response
Preset library support
2 x 4-pole speaker connectors
Birch plywood enclosure
Black Tough-Tone finish with black steel grille
Integral 3-point rigging hardware
Suitable for flying or ground deployment
2 carry handles

WLA-28SUB Specifications

Active or Passive: Passive
System Type: Subwoofer
Configuration: Bass-reflex
System Continuous Power: 1200 W
System Programme Power: 2400 W
System Peak Power: 4800 W
Max SPL at 1 m: 145 dB half-space
Frequency Response (+/-3 dB): 39 Hz - 900 Hz
Frequency Range (-10 dB): 39 Hz - 1.5 kHz
System Rated Impedance: 4 ohms
Sensitivity: 108 dB at 2.83 V / 1 m
LF Driver Size: 2 x 15 in.
LF Magnet Material: Ferrite
LF Frame Material: Aluminium
LF Voice Coil Size: 4 in.
LF Rated Impedance: 2 x 8 ohms
LF Power: 2 x 600 W RE:AES2-2012
Input Connector: 2 x 4-pole speaker connector
Enclosure Material: Birch plywood
Grille Material and Finish: Steel black
Finish: Black Tough-Tone
Handles: 2
Deployment: Flying, ground
Pole Mount: None
Rigging: Yes
Integral Rigging: 3 points
Crossover Frequency: Preset dependent
Recommended HPF: 39 Hz, BW 18 dB/oct.
Bi-Amp Mode Switch: No
Bluetooth: No
IP Certification: None
Transformer: No
Unpacked Dimensions: 485 x 760 x 716 mm / 19.1 x 29.9 x 28.2 in.
Packed Dimensions: 850 x 575 x 716 mm / 33.5 x 22.6 x 28.2 in.
Net Weight: 61.2 kg / 134.9 lb
Gross Weight: 66 kg / 145.5 lb

What's In The Box

WLA-28SUB subwoofer
User manual

Shipping

Orders ship from our northern NJ warehouse the same day if ordered by 3:30PM EST. Transit time ETA's are listed in the image below:

Return Policies

All orders come with our industry leading 90-Day return policy.

Cash Back or Store Credit available for returns within 30 days.
Store Credit available for returns within 31-90 days.

Restocking fees

Unopened Items: 5%
Opened but Mint Condition: 15%
Blemished, Missing/Damaged Packing or Accessories: 25%

Shipping Costs

Buyer is responsible for return shipping costs
If "Free" or discount shipping was provided with original order, our actual shipping cost will be deducted from the amount refunded/credited

Damages & Defects

We will swap any item reported as damaged or defective within 7 days of delivery for free. All transportation and replacement costs will be covered by us (within US48 states).