See all parts that fit your 2014 Flex
500W Peak (250W RMS) 12" 35 Series Single 4-ohm Car Subwoofer
• Peak Power: 500 watts
• RMS Power: 250 watts
• Impedance: Single 4 ohm
• Polypropylene Cone
• Rubber Surround
• Mount depth: 5.313"
• Sensitivity: 86 dB
iDataLink Maestro KIT-FLX1 Dash and Wiring Kit
Double DIN Dash and Wiring Kit for iDataLink-Compatible Car Stereo in select 2013-2019 Flex (Requires Maestro RR)
$429.99
List price $519.99
6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto (Sirius XM Ready)
$399.00
List price $600.00
Universal 6x8" Waterproof Silicone Rubber Speaker Baffle Ring Kit (Pack of 2)
$21.99
List price $29.99
500W Peak (250 RMS) 6x8" KS-Series 2-way 4-ohm Component Speaker System (KSS6804)
$249.99
List price $279.99
iDataLink Maestro RR2 Interface Module
Universal Stereo Replacement Interface Module for iDataLink Maestro Compatible Stereos
$259.99
List price $319.99
Get a Free roll of Belva 16 Gauge Speaker Wire. Simply click the "Add Both to Cart" button and you will see your savings at checkout. This offer cannot be combined with any other coupons or offers.
MTX 3512-04
100% off
$129 95
$12 99
Priced separately $142 94
Promo Savings of $12 99
Total price:
$129 95
• Peak Power: 500 watts
• RMS Power: 250 watts
• Impedance: Single 4 ohm
• Polypropylene Cone
• Rubber Surround
• Mount depth: 5.313"
• Sensitivity: 86 dB
The 3512-04 is a 12" single voice coil, 4 ohm, 250 watt Car Audio Subwoofer designed to deliver outstanding SPL and sound quality in an affordable combination of state-of-the-art MTX sub features...and it rocks.
This subwoofer features the MTX Inverted Apex Surround. This is a departure from a traditional half roll surround. The Inverted Apex is narrower thereby increasing the surface diameter of the subwoofer cone enabling it to displace more air and generate higher SPL. The 55's are designed with a progressive suspension that lowers distortion resulting in improved sound quality even at high volume. 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.
Priced Individually
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(previous model, replaced by MTX 3512-04S)
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2 Infinity REF507CF (INFSPKRF507CFUS) w/ Adapter Plates
390W Peak (130W RMS) 5.25" Reference Series 2-way 3-ohm Component Speaker System with Speaker Adapter Plates
$477.88
List price $543.88
600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers
$79.96
List price $119.99
6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto, and SiriusXM Ready
$339.99
List price $420.00
360W Peak (120W RMS) 6.5" Club Series 2-way Coaxial 3-ohm Speakers
$99.95
List price $139.95
480W Peak (120W RMS) 6.5” DS Series 2-way 4-ohm Coaxial Car Speakers (DSC6504)
$84.99
List price $94.99
6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay and Android Auto, and Built-in Alexa (Sirius XM Ready)
$469.99
List price $620.00
600W Peak (200W RMS) 6.5" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers
$109.00
List price $119.99
150W Peak (50W RMS) 3.5" Club Series 2 Way Coaxial 3-ohm Speakers
$79.95
List price $109.95
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• Peak Power: 1200 watts
• RMS Power: 400 watts
• Polypropylene Cone
• Rubber Surround
• Impedance: Single 4 ohm
• Mount depth: 7-13/16"
• Sensitivity: 89 dB
(1)
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NVX VCW124 Version 3 (VCW124v3)
• Peak Power: 2400 watts
• RMS Power: 1200 watts
• Impedance: Dual 4 ohm
• Carbon Fiber Enhanced Non-Pressed Paper Cone
• Custom High Roll Foam Surround with black nylon stitching
• Mount depth: 7.02"
• Sensitivity: 85 dB (1W/1m)
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$239.99
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• Peak Power: 1200 watts
• RMS Power: 600 watts
• Impedance: Dual 4 ohm
• Polypropylene Cone
• Rubber Surround
• Mount depth: 3.51"
• Sensitivity: 84 dB
$299.99
List price $359.99
• RMS Power: 600 watts
• Impedance: Dual 4 ohm
• Mineral-Filled Polypropylene Cone
• Butyl Rubber Surround
• Mount depth: 7.52"
• Sensitivity: 85.4 dB
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• Peak Power: 1000 watts
• RMS Power: 500 watts
• Impedance: Dual 4 ohm
• UV-Treated Polypropylene Cone
• UV-resistant Santoprene Surround
• Mount depth: 3-3/4"
• Sensitivity: 85.5 dB
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$199.96
List price $279.99
NVX VCW122 Version 3 (VCW122v3)
• Peak Power: 2400 watts
• RMS Power: 1200 watts
• Impedance: Dual 2 ohm
• Carbon Fiber Enhanced Non-Pressed Paper Cone
• Custom High Roll Foam Surround with black nylon stitching
• Mount depth: 7.02"
• Sensitivity: 85 dB (1W/1m)
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$239.99
List price $287.99
• Peak Power: 500 watts
• RMS Power: 250 watts
• Impedance: Single 4 ohm
• Polypropylene Cone
• Rubber Surround
• Mount depth: 4.92"
• Sensitivity: 85 dB
$79.99
List price $139.95
• Peak Power: 1000 watts
• RMS Power: 250 watts
• Impedance: Single 4 ohm
• Polypropylene Cone
• Rubber Surround
• Mount depth: 6"
• Sensitivity: 91 dB
$109.95
List price $129.95
• Peak Power: 1600 watts
• RMS Power: 800 watts
• Impedance: Dual 2 ohm
• Enhanced Pressed Paper Cone
• High Roll Foam Surround
• Mount depth: 6.5"
• Sensitivity: 85 dB
(3)
$149.99
List price $227.99
Sundown Audio M-12 D2 12" (M12D2)
• Peak Power: 4000 watts
• RMS Power: 2000 watts
• Impedance: Dual 2 ohm
• Polypropylene Cone
• High Roll Foam Surround
• Mount depth: 10.88"
• Sensitivity: 80.6 dB
(2)
$599.99
List price $719.99
Manufacturer:
Model Number:
3512-04
Weight:
9.50lbs
Internal SKU:
mtx-351204
Internal Product ID:
68894
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Well made
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.
44 found this helpful
Just the box
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.
Verified purchase
23 found this helpful
Single 12" Sealed Subwoofer Enclosure
Durable 5/8" MDF Angled Sub Enclosure Lined w/ Polyfil.
(27)
$54.99
List price $95.99
Single 12" Sealed Subwoofer Enclosure
Durable 3/4" Medium Density Fiberboard (MDF) Construction
(172)
$69.99
List price $69.99
Dual 12" Sealed Subwoofer Enclosure
Durable 3/4" Medium Density Fiberboard (MDF) Construction
(120)
$99.99
List price $119.99
Single 12" Vented SPL Subwoofer Enclosure
Durable 3/4" Medium Density Fiberboard (MDF) Construction
(10)
$139.99
List price $164.99
NVX 20 ft. of True Spec 8 Gauge Speaker Wire
Flexible multi-strand cable bends and twists to meet your installation needs.
(45)
$49.99
List price $64.99
Belva 23 ft. of 12 Gauge Speaker Wire
Ultra-flexible PVC blended jacket for easy installation.
(43)
$6.99
List price $14.99
Stinger's Roadkill sound dampening series is sure to kill unwanted road noise and rattles! Enough sound dampening for your whole trunk!
(9)
$155.99
List price $339.00
Did you know sound dampening will reduce those annoying rattles and even increase your SPL?
(47)
$156.95
List price $187.44
NVX SDRLR1 Sound Damping Rubber Roller
Universal Professional Heavy Duty Roller for Sound Damping
(127)
$10.99
List price $13.99
NVX SDRLR2 Sound Damping Rubber Roller
Universal Professional Heavy Duty Roller for Sound Damping
(19)
$11.99
List price $14.99
• Peak Power: 500 watts
• RMS Power: 250 watts
• Impedance: Single 4 ohm
• Enhanced Pressed Paper Cone
• High Roll Foam Surround
• Mount depth: 5.56"
• Sensitivity: 87 dB
$69.99
List price $83.99
• Peak Power: 500 watts
• RMS Power: 250 watts
• Impedance: Single 2 ohm
• Polypropylene Cone
• Rubber Surround
• Mount depth: 5.313"
• Sensitivity: 86 dB
(1)
$119.95
List price $109.95
26" 500W Weatherproof UTV/ATV/Powersports Bluetooth Soundbar with 6 Speakers
(3)
$149.99
List price $299.99
Install a Backup Camera to Factory Stereo in select 1998-2021 vehicles from Toyota, Lexus with Factory Navigation
$39.99
List price $39.99
6", 6.5" or 6.75" Speaker Mounting Adapters for select 2015-2018 vehicles from Ford
$32.00
List price $39.00
Install a New Car Stereo and Retain the Factory Antenna in select 2010-2021 vehicles from Honda
$10.00
List price $24.00
1 Female to 2 Male Y-Adapter X-Series RCA Audio Interconnect Cables (2-pack)
(13)
$12.99
List price $29.99
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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:
Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.
