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Focal E 30KX

K2 Power Series 12" dual 4-ohm voice coil component subwoofer

Item # 091E30KX

This sub's name gets straight to the point — Focal's K2 Power E 30 KX 12" subwoofer delivers...

This sub's name gets straight to the point — Focal's K2 Power E 30 KX 12" subwoofer delivers...

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Item # 091E30KX

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$999.99 each

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About the Focal E 30KX

This sub's name gets straight to the point — Focal's K2 Power E 30 KX 12" subwoofer delivers hard-hitting low end that combines realistic reproduction with competition-level sound pressure. Precision engineering and hand-assembled construction make this sub a sound choice for a high-performance bass system.

High-performance sub

This sub's name gets straight to the point — Focal's K2 Power E 30 KX 12" subwoofer delivers hard-hitting low end that combines realistic reproduction with competition-level sound pressure. Precision engineering and hand-assembled construction make this sub a sound choice for a high-performance bass system.

Focal E 30KX 12" Subwoofer

The super-rigid zinc alloy basket creates a stable platform for powerful, accurate bass.

Assembled and inspected by hand

You can feed the K2 Power E 30 KX 12" subwoofer up to 800 watts RMS without fear. This dual 4-ohm voice coil sub works best in sealed enclosures to produce bass that's highly accurate and plenty forceful. Focal assembles each sub by hand and rigorously inspects them for any flaws to ensure your investment performs to the high sonic standards they've set.

Powerful magnet

A massive two-segment magnet supplies the backbone for the sub's powerful reputation, driving the motor assembly with unerring precision. Focal anchors the K2 Power sub with a rugged zamak zinc alloy basket for dependable performance that won't get bent out of shape by your music.

3-layer cone

At the top end of the sub, a butyl rubber surround maintains control of the cone, even during deep excursion. Focal's unique composite sandwich cone employs a structural foam central core coated with a layer of Aramid fiber on the front and a glass layer on the back side. The three layers together form an incredibly rigid yet lightweight membrane for high-quality sound reproduction with an added emphasis on thunderous sound pressure.

To drive this single subwoofer, we recommend a mono amplifier rated between 600 and 1200 watts RMS at 2 ohms. For more information, please refer to our article on How to Match Subwoofers and Amplifiers.

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Product highlights:

  • 12" dual 4-ohm voice coil subwoofer
  • aramid fiber/foam/glass composite sandwich cone with butyl rubber surround
  • zamak zinc alloy basket
  • power range: 100-800 watts RMS
  • peak power handling: 1600 watts
  • frequency response: 25-500 Hz
  • sensitivity: 84.5 dB
  • top mount depth: 6-13/16"
  • sealed box volume: 0.35 - 0.52 cu. ft.
  • ported box volume: 0.88 - 1.05 cu.ft.
  • grille not included
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # E 30KX

What's in the box:

  • One 12" Dual 4-ohm voice coil subwoofer
  • Owner's manual (English/ French/ German/ Italian/ Spanish/ Portuguese/ Dutch/ Russian)

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Powerful SQ

BG from Houston, Texas on 6/19/2019

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I have been competing in Sound Quality competitions for a while now and this is quickly becoming one of my favorite subwoofers. It's tight and accurate but has the ability to get loud and be fun as well. They only other sub I liked as much is my Illusion C12XL but with my new amps I had to have a 2ohm mono load to get full power to the sub. The build quality of this sub is 2nd to none. If you are on the fence.. get one!

Pros: Accurate, loud and extremely well built.

Cons: Have some power ready to push this.

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More details on the Focal E 30KX

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Product Research

Features

K2 Cone: The woofer cone is a sandwich composite consisting of a foam core, a structural glass fiber bottom layer, and a Kevlar top layer. This combination of materials results in a rigid, light weight cone with excellent damping characteristics.

Dual 4Ω Voice Coils: The dual 4Ω voice coils offer wiring flexibility; when wired in parallel the woofer presents a 2Ω load, when wired in series the woofer presents an 8Ω load.

Compression Terminals: The two sets of spring post terminals will accommodate single banana plugs, dual banana plugs (standard 3/4" width), and bare speaker wire up to 10 gauge.

Sealed Box: Focal recommends sealed enclosure sizes from 0.99 ft³ to 1.41 ft³. Sealed enclosures provide the most control over a woofer, will handle a lot of power, and provide accurate sonic reproduction, making them suitable for all types of music.

Ported Box: Two ported enclosure volume options are listed in the manual; 1.24 ft³ (35 liters) with one 3.15" (8cm) diameter x 13.78" (35cm) long port and 1.77 ft³ (50 liters) with one 3.94" (10cm) diameter x 15.75" (40cm) long port. Ported (or vented) enclosures typically provide better overall efficiency than sealed, so they are suitable for use with smaller amplifiers, giving you more bass output from less power. However, this efficiency comes at the expense of very low frequency output.

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
Just replaced all of my other speakers with Focal and they sound incredible, but need more bass. Now adding an awesome sub to complete the installation. [ Alan  Jun 20, 2018 ]

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