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MTX 3512-04S

300W RMS 12" 35 Series Single 4-ohm Shallow Car Subwoofer

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• RMS Power: 300 watts
• Impedance: Single 4 ohm
• Polypropylene Cone
• Mount depth: 3.375"
• Sensitivity: 84.4 dB

Learn more about the 351204s
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$189.95

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MTX 3512-04S

100% off


Priced separately $202 94

Promo Savings of $12 99

Total price:

$189 95

Description


MTX brand icon

Authorized dealer


3512-04S

The 3512-04S is the ideal subwoofer for audio enthusiasts that don't want to sacrifice space in their vehicle, but still want their sound to bump. Designed for sealed enclosures, this subwoofer is perfectly deployed in pick up trucks, sports cars, or any daily driver that has a trunk full of life's stuff. A great value, this subwoofer continues the MTX tradition of getting More Than Xpected.

This subwoofer features a new Inverted Apex surround that increases surface area allowing for more air movement and higher SPL, and a progressive suspension that lowers distortion resulting in improve low profiled sound quality. This subwoofer also incorporates Spider Plateau Venting which is a mechanical cooling process that targets cool air at the voice coil effectively managing the temperature for long term performance. 35 Series subwoofers are ideal for improving the sound in any vehicle. Their low profile does not require a large enclosure so they are perfect for most vehicles.


Product Details:

  • 12" Single 4 ohm 35 Series Subwoofer
  • Power Handling:
    • RMS: 300 watts
  • Polypropylene Cone
  • Inverted Apex Surround
  • Spider Plateau Venting
  • 8 AWG Compression Terminals
  • 2" High Temperature Voice coil
  • 10.21 mm Xmax
  • 44 oz. Single Stacked magnet motor structure
  • Frequency Response: 23 - 130 Hz
  • Resonance Frequency (Fs): 29.61 Hz
  • Sensitivity: 84.4 dB
  • Recommended sealed box volume: 0.75 cubic feet - 0.95 cubic feet
  • Top-mount depth: 3.375"
  • Cutout diameter: 11.125"
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

  • Priced Individually

PDF IconMTX 351204S owner’s manual

Product history:

MTX 3512-04S thumbnail
(newest, current model)
MTX 3512-04 thumbnail
(previous model, replaced by MTX 3512-04S)

Subwoofer Wiring Guide


Wiring Guide to Wire 1 MTX 3512-04S Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 MTX 3512-04S Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

Wiring Guide to Wire 3 MTX 3512-04S Subwoofers

4 Channel Amp

Wiring Guide to Wire 4 MTX 3512-04S Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp


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Specifications & Details


Subwoofer Specifications
Series
35 Series
Subwoofer Size
12"
RMS Power Handling
300 watts
Voice Coil(s)
Single
Impedance (Per Voice Coil)
4 ohm
Voice Coil Diameter
2"
Frequency Response
23 - 130 Hz
Sensitivity
84.4 dB
Xmax (millimeters)
10.21 mm
Subwoofer Design
Round / Circle
Main Cone Color
Dark Gray
Woofer Composition
Polypropylene
Magnet Structure
Single Stacked
Magnet weight
44 oz.
Subwoofer Grille
No
Re-Cone Kit Available
No
CTA-2031 Compliant
No
Recommended Enclosure Specifications
Recommended Enclosure Type
Sealed
Minimum Sealed Box Volume
0.75 cubic feet
Maximum Sealed Box Volume
0.95 cubic feet
Top-Mount Depth (Mounting Depth)
3.375"
Cutout Diameter
11.125"
Shallow Mount Installation
Yes
T/S Parameters (Electromechanical)
Free-Air Resonance (Fs)
29.61 Hz
Equivalent Compliance (Vas)
58 liters
Total Speaker Q Value (Qts)
0.69
Electrical Q Value (Qes)
0.87
Electrical Resistance of Voice Coil (Re)
3.13 ohm
Mechanical Q Value (Qms)
3.33
What is in the box?
Paperwork
User manual
WITB: Subwoofers
Subwoofer
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

MTX

Model Number:

3512-04S

Weight:

10.00lbs

Internal SKU:

351204s

Internal Product ID:

143683

Customer Ratings & Reviews


MTX 3512-04S thumbnail image

5 star
100%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
5
Value
4.5
Features
5
Design
5
Usability
5

Customer Reviews

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Well made

The following review is for a previous version (3512-04).

Put 2 of these in a slim box in an 05 Ram 1500 standard cab powered by an Alpine PDX-V9 and they sound great. I almost always look at reviews first but at the time there were none for this specific model, and still aren't. Sonic got them to me fast! Build quality was very nice. Stamped steel baskets and heavy duty connecting posts made wiring a snap.

Something worth noting on this specific model is that the cutout is a little oversized so for a pre-made box you might have to trim a little for fitment.

I have used MTX drivers,mids, and subs many times over the last 20 years and have never been disappointed. This is no exception to that. They do not hit the really low frequencies but I suspect that is more of a box fail than a speaker issue. It is a slim mount after all too.

If I had it to buy again would I buy the same ones? Yes, I would.

By Clarence on January 5, 2015

44 found this helpful


Just the box

The following review is for a previous version (3512-04).

The sub itself was in perfect condition. I can't say that it would be the same case for all but this one was perfect.

By Jimmie on April 3, 2022 Checkmark Icon Verified purchase

23 found this helpful


The following review is for a previous version (3512-04).
By Michael on April 7, 2025 Checkmark Icon Verified purchase




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