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MTX 3512-04 - Open Box, Great

500W Peak (250W RMS) 12" 35 Series Single 4 Ohm Subwoofer

MTX
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• 500W Peak
• 250W RMS
• Polypropylene Woofer Cone
• Nitrile Butyl Rubber Surround
• Inverted Apex Surround Design
• Spring Loaded Push Pin Terminals

Learn more about the mtx-351204_obc8
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$103.96

 with warranty

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Open Box, Great

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Description


MTX brand icon

Authorized dealer

Item Condition - Open Box, Great:

This product works like new, is well-cared-for and in great condition. May show limited signs of wear or use and may be missing non-essential parts, accessories or original packaging.

MTX 3512-04

500W Peak (250W RMS) 12" 35 Series Single 4-ohm Car Subwoofer
Quantity: 1

Product Details:

  • 12" Single 4 ohm 35 Series Subwoofer
  • Power Handling:
    • Peak: 500 watts
    • RMS: 250 watts
  • Polypropylene Cone
  • Rubber Surround
  • Inverted apex surround for more air and higher SPL
  • Plateau venting for mechanical cooling process
  • 1.75" High Temperature Voice coil
  • 8.128 mm Xmax
  • 56 oz. Single Stacked magnet motor structure
  • Frequency Response: 28 - 130 Hz
  • Resonance Frequency (Fs): 31.4 Hz
  • Sensitivity: 86 dB
  • Recommended sealed box volume: 1.0 cubic feet
  • Recommended ported box volume: 2.32 cubic feet
  • Top-mount depth: 5.313"
  • Cutout diameter: 11.125"
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

  • Priced Individually

Subwoofer Wiring Guide


Wiring Guide to Wire 1 MTX 3512-04 - Open Box, Great Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 MTX 3512-04 - Open Box, Great Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

Wiring Guide to Wire 3 MTX 3512-04 - Open Box, Great Subwoofers

4 Channel Amp

Wiring Guide to Wire 4 MTX 3512-04 - Open Box, Great Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Specifications & Details


Subwoofer Specifications
Series
35 Series
Subwoofer Size
12"
Peak Power Handling
500 watts
RMS Power Handling
250 watts
Voice Coil(s)
Single
Impedance (Per Voice Coil)
4 ohm
Frequency Response
28 - 130 Hz
Sensitivity
86 dB
Subwoofer Design
Round / Circle
Main Cone Color
Black
Woofer Composition
Polypropylene
Woofer Surround
Nitrile Butadiene Rubber NBR
Magnet Structure
Single Stacked
Subwoofer Grille
No
Re-Cone Kit Available
No
Recommended Enclosure Specifications
Recommended Enclosure Type
Ported / Vented
Sealed
Optimum Sealed Box Volume
1.0 cubic feet
Optimum Ported Box Volume
2.32 cubic feet
Top-Mount Depth (Mounting Depth)
5-3/8"
Cutout Diameter
11-1/8"
Shallow Mount Installation
No
Electromechanical Parameters
Free-Air Resonance (Fs)
31.4 Hz
Equivalent Compliance (Vas)
73.1 liters
Total Speaker Q Value (Qts)
0.697
Electrical Q Value (Qes)
0.893
Electrical Resistance of Voice Coil (Re)
3.5 ohm
Mechanical Q Value (Qms)
3.173
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:

3512-04 Damaged Packaging

Weight:

9.50lbs

Internal SKU:

mtx-351204_obc8

Internal Product ID:

190781

Customer Ratings & Reviews



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 3512-04, which is a part of the bundle you are viewing.

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 3512-04, which is a part of the bundle you are viewing.

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

21

found this helpful.

The following review is for 3512-04, which is a part of the bundle you are viewing.
By Michael on April 7, 2025 Checkmark Icon Verified purchase


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