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Alpine X-W12D4 with Ported Enclosure

2700W Peak (900W RMS) 12" X-Series Dual 4-Ohms Subwoofer

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• Peak Power: 2700 watts
• RMS Power: 900 watts
• Polypropylene-Mica Cone
• High Roll Foam Surround
• Impedance: Dual 4 ohm
• Includes Ported Enclosure

Learn more about the alp-xw12d4_12sq

We apologize

This item has been discontinued


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Description


Alpine brand icon

Authorized dealer

Alpine X-W12D4

2700W Peak (900W RMS) 12" X-Series Dual 4-Ohms Car Subwoofer
Quantity: 1

Product Details:

  • 12" Dual 4 ohm X-Series Subwoofer
  • Power Handling:
    • Peak: 2700 watts
    • RMS: 900 watts
  • Polypropylene-Mica Cone
  • High Roll Foam Surround
  • Dual-spider cone and patented H.A.M.R. rubber surround
  • Grille and trim ring included
  • Aluminum frame cast with rock-solid platform
  • 2.6" High Temperature Voice coil
  • 24 mm Xmax
  • 174 oz. Triple Stacked magnet motor structure
  • Frequency Response: 23 - 200 Hz
  • Resonance Frequency (Fs): 27 Hz
  • Sensitivity: 84.3 dB
  • Sealed box volume: 0.4 cubic feet
  • Ported box volume: 1.0 cubic feet
  • Top-mount depth: 7.2"
  • Cutout diameter: 11.06"
  • Authorized Internet Dealer
  • Protective subwoofer grille: Yes - Included
  • 1-year Sonic Electronix Warranty

  • Priced Individually

Atrend 12SQ

Empty Single 12" Small Sealed Subwoofer Enclosure
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Product Details:

  • 12" Single Small Sealed Subwoofer Enclosure
  • Durable 3/4" Medium Density Fiberboard (MDF) construction
  • Mitered edge construction provides cleaner finish
  • Miter joints feature over 41% more surface area
  • More surface area translates into a stronger bond
  • Dado joints offer 80% increase in surface area
  • Built using trick glue for up to 3600 PSI holding ability
  • Premium charcoal carpet and silver spring-loaded terminal cups
  • Maximum subwoofer mounting depth: 9.53"
  • Subwoofer cutout diameter: 11.13"
  • Total box volume: 0.75 cubic feet
  • Dimensions: 13.50" L x 13.50" H x 10.50" W
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Product history:

Alpine X-W12D4, 12SQ thumbnail
(newest, current model)
Alpine SWX-1243D thumbnail
(previous model, replaced by Alpine X-W12D4 with Ported Enclosure)
Alpine SWX-1242D thumbnail
(previous model, replaced by Alpine SWX-1243D)

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Specifications & Details


Subwoofer Specifications
Series
X-Series
Subwoofer Size
12"
RMS Power Handling
900 watts
Peak Power Handling
2700 watts
Woofer Composition
Polypropylene-Mica
Woofer Surround
High Roll Foam
Sensitivity
84.3 dB
Frequency Response
23 - 200 Hz
Subwoofer Design
Round / Circle
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Item Details


Manufacturer:

Model Number:

X-W12D4, 12SQ

Weight:

34.00lbs

Internal SKU:

alp-xw12d4_12sq

Internal Product ID:

198572

Customer Ratings & Reviews


Alpine X-W12D4 with Ported Enclosure thumbnail image

5 star
50%
4 star
33%
3 star
0%
2 star
8%
1 star
8%



Durability
4.2
Value
4
Features
4.1
Design
4.3
Usability
4.4

Customer Photos & Videos


Customer Reviews

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Great for small cars

The following review is for 12SQ, which is a part of the bundle you are viewing.

I bought this box for my soundqubed 12". It was the smallest box I could find that fit a 7" deep sub. Works great. Hits pretty hard with the sub. The inside is sealed well, which is hard to find for a prefab box.

By Adam on September 26, 2015

40 found this helpful


Decent

The following review is for 12SQ, which is a part of the bundle you are viewing.

Arrived dented in the corner and it seems the cut out for the sub is slightly too large. It was for my alpine type r.

By Stephen on September 14, 2017

37 found this helpful


Nice Box

The following review is for 12SQ, which is a part of the bundle you are viewing.

This is a nice box. You're not going to get a ton of thump out of this box. It just isn't going to happen. I have a dayton HO 12 in it and it puts out good base with a ton of musicality. It's more of a sound quality setup. No complaints here.

By Brendan on November 2, 2015

34 found this helpful


Small pro box love it

The following review is for 12SQ, which is a part of the bundle you are viewing.

This is my 4 order from sonicelectronix love the quility of products and price thank you

By jorge on July 21, 2023 Checkmark Icon Verified purchase

32 found this helpful


Good box

The following review is for 12SQ, which is a part of the bundle you are viewing.

Has seen three different subs and awaiting a fourth. One spot is starting to split from the screws but other then that it's great. I stuffed it with poly fill

By Anonymous on July 4, 2019 Checkmark Icon Verified purchase

33 found this helpful


Great for small cars

The following review is for 12SQ, which is a part of the bundle you are viewing.

I bought this box for my soundqubed 12". It was the smallest box I could find that fit a 7" deep sub. Works great. Hits pretty hard with the sub. The inside is sealed well, which is hard to find for a prefab box.

By Adam on September 26, 2015

32 found this helpful


Impressive

The following review is for X-W12D4, which is a part of the bundle you are viewing.

So I'm new to Alpine subs, in my youth I ran kicker and the occasional JL audio, as I got older I ran Rockford fosgate if I wanted to get loud but generally went back to JL. This time I wanted loud with clarity and quality but the JL w7 and many times the w6 is just too much money. So I got a 10" type x, and built a box the exact spec.s, and pushed it and a TW3 with 1200w RMS (2400 PEAK) and liked it so much I just purchased a 12" type x, and even in a prefab box the two type Xs are loud, low, and produce some of the best bass I've ever heard.

By Weldog on October 25, 2021

7 found this helpful


Top of the line

The following review is for X-W12D4, which is a part of the bundle you are viewing.

This beauty makes massive sound. It pours massive bass into my car. Custom box tuned to 34hz lets this sucker hit like a 15". The low to midrange bass it produces sounds phenominal! The bass is worth the price no doubt.

By Ethan on April 17, 2022 Checkmark Icon Verified purchase

6 found this helpful


NOT A RELATABLE SUBWOOFER

The following review is for X-W12D4, which is a part of the bundle you are viewing.

This subwoofer has an aluminum heat sink that came loose and shot out of the dust cap and with the speaker grill holding it inside, destroyed the paper cone, coil and spyder are still in tacked. And just 18 days after the warranty ran out. The amp I ordered is still within the year of purchase so I know this subwoofer didn't make it past a year. The amplifier used was an Alpine X-A90M with the gain set with an SMD DDM

By Fernando on January 21, 2021

5 found this helpful


Great sub

The following review is for X-W12D4, which is a part of the bundle you are viewing.

I have had many type R 12 and this time was running a bigger amp so needed something that would handle the power so I am running each sub off a pdx-m12 on each one and they sound amazing and hit hard

By Robert on January 21, 2022 Checkmark Icon Verified purchase

3 found this helpful




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Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.