Overview

Another strong member of the family

MTX's 35 Series subs prove once again that you can pack a lot of technology into an affordable subwoofer. This 3512-04 12” 4-ohm sub shows off many of the features that MTX originally developed for their top-of-the-line subs. That means you get a sub that performs the way you want, delivering great low-end bump with impressive accuracy. And MTX protects this sub with a 2-year warranty.

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Another strong member of the family

The heart of the matter

The Inverted Apex Surround increases the cone's surface area for better volume displacement and a higher SPL. This sub's sophisticated suspension system offers better control over cone movement for more refined bass. MTX's venting system keeps the voice coil cooler for optimum performance over the long haul. Put this 4-ohm model in a sealed or ported enclosure, power it with a nice amp, and you've just created a cost-effective recipe for adding a solid kick to your music.

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Product highlights:

12" 4-ohm subwoofer
polypropylene cone with nitrile-butyl rubber surround
power range: 125-250 watts RMS (500 watts peak power)
frequency response: 28-130 Hz
sensitivity: 86.06 dB
top-mount depth: 5-1/4"
sealed box volume: 1.00 cubic feet
ported box volume: 2.32 cubic feet
warranty: 2 years
Our 60-day money-back guarantee
MFR # 3512-04

What's in the box:

MTX 3512-04 owner's manual

One 12" Single voice coil subwoofer
Specifications

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Details

Researched by Crutchfield's Pat M.

Features & specs


Size	12 -inch
Impedance	4 ohms
Cone Material	Polypropylene
Surround Material	Rubber
Ideal Sealed Box Volume (cubic feet)	1
Ideal Ported Box Volume (cubic feet)	2.32
Port diameter (inches)	N/A
Port length (inches)	N/A
Free-Air	No
Dual Voice Coil	No
Sensitivity	89.7 dB at 2.83 volts 86.06 dB at 1 watt
Frequency Response	28 - 130 Hz
Max RMS Power Handling	250
Peak Power Handling (Watts)	500
Top Mount Depth (inches)	5 1/4
Bottom Mount Depth (inches)	N/A
Cutout Diameter or Length (inches)	11 1/16
Vas (liters)	73.1
Fs (Hz)	31.4
Qts	0.697
Xmax (millimeters)	8.128
Parts Warranty	2 Years
Labor Warranty	2 Years

The MTX 3512-04 replaces these items:

MTX RTL12-04

Product Research

Features
Enclosure Compatibility

Features

Terminals: The woofer features heavy-duty spring post terminals which can accept single or dual (standard 3/4" width) banana plugs, pin connectors, or bare wire up to 10-gauge.

Inverted Apex Surround: The new Inverted Apex surround allows increased cone surface area, creating more air movement and higher SPL.

Progressive Suspension: The progressive suspension controls excursion at high power, thus reducing distortion and improving sound quality.

Spider Plateau Venting: Heat from the voice coil is vented through vents that surround the back of the spider. As the woofer travels back and forth, cool air is pulled in and heated air is pushed out.

Enclosure Compatibility

Sealed Box: For the best possible sound quality where space is a premium MTX recommends a sealed enclosure with an internal volume of 1.0 ft³. Sealed enclosures provide the most control over a woofer, will handle a lot of power, and provide accurate sonic reproduction, making them suitable to all types of music.

Vented Box: The recommended vented box has a net internal volume of 2.32 ft³ with a slot port 13-3/4" x 2-1/2" x 26-1/4". Vented (or ported) 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.