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CLEARANCE Adire Audio ADKA18D4 18" Kali Subwoofer DVC 4x4 Ohm

Adire AudioPart # 294-158
Model: ADKA18D4

The Adire Audio Kali 18" is a high-performance car audio subwoofer engineered to deliver exceptional low-frequency reproduction for audio enthusiasts seeking powerful and precise bass. Utilizing Adire Audio's patented XBL² motor technology, the Kali 18" achieves remarkable linear excursion, resulting in accurate and distortion-free sound even at high output levels. Its robust construction and advanced components make it suitable for demanding car audio installations, providing both durability and superior performance.

Key Features

  • The first 4" coil XBL² ultra subwoofer on the market
  • Paper cone with diamond dust cap gives this subwoofer years of life
  • Proprietary dual progressive roll spider offers the most linear excursion you can imagine
  • Huge dual Y35 ferrite magnets further add to the making the motor structure strong and linear
  • Each voice coil can take 3,000 watts RMS to let you truly feel the bass
  • Designed for extreme car audio, home audio, and even pro audio applications
  • Hand built in the U.S.A.
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Overview

Adire Audio ADKA18D4 18" Kali Subwoofer DVC 4x4 Ohm

Introducing Adire Audio's Kali Series subwoofer—an ultra-high-excursion powerhouse with groundbreaking 4” coil technology. Following Adire Audio's move to California, they aimed to push the boundaries of XBL^2 motor technology, creating a subwoofer with unmatched precision and strength.

The Kali is equipped with a massive dual stack of 250mm Y35 ferrite magnets, offering 40mm of linear excursion, with inductance rings embedded throughout the FEA-optimized motor structure and magnetic gap for an ultra-strong, ultra-linear motor structure. With a proprietary 10” dual progressive roll spider crafted from a durable phenolic resin-impregnated Nomex poly-cotton blend, the Kali ensures consistent, linear excursion even in high-demand applications.

Built rugged, the Kali features 4 AWG push-pin terminals, a non-pressed kraft pulp hybrid fiber cone, and a multi-layer foam surround, complete with a standard carbon fiber dust cap for enhanced rigidity. CNC-machined gap venting pairs with a 4” 4-layer flat-wound aluminum voice coil to allow the Kali to reach 3,000 watts RMS, maintaining clean, powerful performance for extreme car audio, home audio, and professional audio applications. With power handling up to 3,000+ watts, the Kali delivers intense, eye-rattling low-end with precision and durability, making it the ultimate choice for those who demand linear, powerful bass in any setup.

Product Details

BrandAdire Audio
ModelADKA18D4
Part Number294-158
UPC753459966846
Unit of MeasureEach

Product Specifications

Nominal Diameter18"
Power Handling (RMS)3000 Watts
Power Handling (MAX)6000 Watts
Impedance4Ω
Sensitivity89.09dB 2.83V/1m

Thiele-Small Parameters

Resonant Frequency (Fs)23.15Hz
DC Resistance (Re)3.72Ω
Mechanical Q (Qms)5.42
Electromagnetic Q (Qes)0.49
Total Q (Qts)0.45
Compliance Equivalent Volume (Vas)7.59ft³
Mechanical Compliance of Suspension (Cms)0.1mm/N
BL Product (BL)30.61T·m
Diaphragm Mass Inc. Airload (Mms)463.1g
Maximum Linear Excursion (Xmax)40mm
Surface Area of Cone (Sd)1217.73cm²

Materials of Construction

Cone MaterialPaper
Surround MaterialFoam
Voice Coil Wire MaterialAluminum
Basket / Frame MaterialCast Aluminum
Magnet MaterialFerrite

Mounting Information

Overall Outside Diameter18.50"
Baffle Cutout Diameter16.75"
Depth12.25"
# Mounting Holes6

Parts Express Staff Recommended Enclosure Volume

Sealed Volume2.643ft³
Sealed F344.15Hz
Vented Volume8.583ft³
Vented F322.01Hz

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