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Alpine SWX-1043D

Type-X 10" subwoofer with dual 4-ohm voice coils

4 Reviews

Item # 500SWX1043

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Our take on the Alpine SWX-1043D

Feed your Alpine Type-X subwoofer some serious power, and it'll unleash powerful bass to enhance your journey. And Alpine's advanced design, quality materials, and rigorous construction ensure that you'll get years of reliable use.

Alpine Authorized Online Dealer

Feed your Alpine Type-X subwoofer some serious power, and it'll unleash powerful bass to enhance your journey. And Alpine's advanced design, quality materials, and rigorous construction ensure that you'll get years of reliable use.

The SWX-1043D 10" subwoofer features a 3-layer cone — a layer of Kevlar®, a layer of plastic film, and a bottom layer of pulp reinforced with Kevlar. This design provides outstanding response and accuracy, while the cone's parabolic shape maintains rigidity and strength. The multi-roll Santoprene™ rubber surround maximizes the cone's performance with its ability to go deep. The concealed mounting gasket gives your sub installation a clean look.

On the inside, the SWX-1043D is all business. A massive, triple-stacked strontium magnet anchors the sub, while the single-piece cast aluminum frame and motor support holds provides the backbone you'll need for big bass. Increased venting and heat dissipation areas keep your sub running cool, so it'll survive conditions that would destroy lesser speakers. This bruiser can handle up to 1,000 watts RMS, so don't hesitate to give it some juice.

You can wire the dual 4-ohm voice coils to get the optimum performance from your amp, or to configure a custom setup with multiple subwoofers. Rock the bass the way you want to with the mighty Type-X subwoofer.

Note: If you are wiring this DVC sub for lower impedance, make sure that your amp is compatible. Most 2-channel car amplifiers are stable down to 2 ohms in standard mode, or 4 ohms in bridged operation.

Priced per speaker

Note: Sorry, Crutchfield cannot ship Alpine products to Guam or Puerto Rico.

Product Highlights:

  • 10" subwoofer with dual 4-ohm voice coils
  • pulp/fiber cone reinforced with Kevlar and a layer of Rohacell® plastic film
  • Santoprene rubber surround
  • cast aluminum frame
  • power range: 500-1,000 watts RMS (500 watts per coil)
  • peak power handling: 3,000 watts
  • frequency response: 26-200 Hz
  • sensitivity: 82 dB
  • top-mount depth: 8-5/8"
  • sealed box volume: 0.5-1.0 cubic feet
  • ported box volume: 0.8-1.5 cubic feet
  • warranty: 1 year
  • Our 60-day money-back guarantee

What's in the Box:

  • One 10" Dual-voice-coil subwoofer
  • 1 Rubber mounting ring (installed)
  • 1 Top-mount rubber concealing ring
  • 1 Bottom-mount rubber mounting ring
  • 2 Voice coil configuration jumpers
  • 2.5mm Hex wrench
  • Application Guide
  • Warranty sheet
  • Customer Care Registration card
  • Important Notice sheet

Alpine SWX-1043D Reviews

Average Customer Review(s):

(4 Reviews)

Very Underwhelming

JoshH from Modesto, CA on 12/27/2011

As I hefted this monster out of the box, I was impressed with how huge and beefy it is. It seems to be fairly well made. I replaced a 10" Boston Acoustics G2 with this Alpine. I also upgraded my AMP to the an Alpine mono amp that pushes 1000 watts RMS(the max for this sub). I expected a night and day difference between the BA G2 and this monster. Man was I let down. This is my first experience with an Alpine sub and it looks to be my last. The low end bass is great for rap, it'll shake your car apart. But the tight punchy bass that I was looking for is almost non-existent. What a waste of money. I'm selling this sub for a fraction of what paid and putting in two 10in shallow mount subs. Stay tuned. If you're expecting great SQ from this sub. .. forget it. It's very loud, but that's about it. Sloppy, sluggish and flat. Never again will I buy an Alpine sub.

Pros: Not much.

Cons: Almost everything.


Dan from Berkeley, CA on 8/16/2011

I've had this sub for a year, until one of the jumpers fell out and 1000w went through just a single coil. Fried instantly. But that's beside the point. The SQ of this sub is terrible. It's loud loud loud but only within a limited frequency range. I had 500w hooked up to a 10w7 before this one and it sounded 10x better and was nearly as loud. I'm replacing this sub with a 13w7, and it's going to kick the heck out of what this was.




Jordan from Knoxville, TN on 4/3/2011

I have owned this sub for about 8 months now, coming from an Alpine SWR-1042d. The sub is now powered by a Kenwood X1200m, although for a long time I used a KAC-8304(?) (500wrms into 2ohm,) 5 farad cap, and Monster connections/power throughout.The box is my own custom ~1.7cu.ft. ported. I have to say, with both amps, the sub is truly stunning. Despite being a ported enclosure, the Type-X maintains incredible tightness, allowing it to shine in metal and some blues. But when asked to perform hip-hop, rap, and other bass intensive music, it proves itself to be, if anything, even better. I continue to be amazed by this driver, even if I have voltage issues due to a 60A altenator, and would recommend this in a heartbeat to anybody looking for an upmarket subwoofer.




Dan from Western NC on 5/23/2008

This sub will beat your brains out! It hits very hard with great SQL. The reason I gave this a 4 star rating is it leaves just a tad to be desired towards the higher end of bass hits. (JMHO) If you like the low bass then oh boy your are in for a treat. Would I buy this again? Most definately! Do not put this in a small box! I put it in a Qlogic .65 sealed and it had troubles, let alone in a small box like that you really need atleast a 1500 watt amp to run it. Use a 1.25 CFT sealed or ported box and watch this sub come to life. Thats what a little birdie at Alpine told me and that birdie was so right! Get one and enjoy it!




Hands-on research

Product Research



Aerospace Cone Material: The Alpine Type-X woofer uses new advanced aerospace materials for the cone, known as Kevlar-Rohacell which provides outstanding strength at a lighter weight. These lighter materials minimize moving mass for greater output efficiency.

Santoprene Surround: The woofer features a High Amplitude Multi Roll Surround  made of injection molded Santoprene, that allows for an incredible amount of linear excursion and greater SPL.

HAMR Engineering: The Alpine Type-X sub is built with HAMR engineering, Alpine's exclusive subwoofer solution for cooler operation, longer life and tight accurate bass.

Dual 4-ohm Voice Coils: The Alpine Type-X woofer features dual 6-layer voice coils which utilize 220°C high-temperature wire with Inner/Outer Winding on a Twin-Wall aluminum former. Dual voice coil woofers offer flexibility in wiring. When the voice coils are wired in parallel with each other, the woofer presents a 2 ohm mono load. When the voice coils are wired in series with each other, the woofer presents an 8 ohm mono load. In addition, each coil may be connected to a different amplifier channel and each channel will see a 4 ohm load.

Terminal Block: The speaker terminals are all located on one side in a machined gold-plated terminal block with 2.5mm Allen-head set screws (an Allen wrench is included). There are slots provided for the supplied voice coil jumpers.

Jumpers: The woofer is equipped with two gold-plated voice coil connection jumpers. These jumpers allow you to wire the voice coils in parallel (for a 2-ohm load) or series (for an 8-ohm load).

Mirrored Progressive Nomex Spiders: This subwoofer has twin mirrored progressive Nomex spiders for added stability and mechanical durability. The custom progressive rolls gives the woofer a longer, more linear stroke (over 23mm one way) with maximum centering and restoring force. Special edge control design and Nomex construction provide excellent tear resistance, strength and long-term reliability. The woofer has reinforced layer tinsel speaker leads that are woven into the spiders for the one-sided terminal layout.

Multi-Stage Ventilation System: The Alpine Type-X woofer has a multi-stage ventilation system with the following features:

  • Cone/Voice Coil Junction Venting: The unique parabolic cone and voice coil attachment piece help to pull cool air into the motor structure.
  • Spider Plateau/Leg Vent System: Two vertical slits are cut into each of the four "legs" of the basket below the spider to allow cool air to flow in and heated air to flow out.
  • Dual Flare Pole: Optimizes airflow into the motor structure across the billet copper shorting sleeves and thermal coupling heat dissipation plate to increase cooling.

Magnet: The woofer is equipped with triple-stacked strontium magnets with an overall magnet weight of 119 ounces.

Cast Aluminum Exo-Frame: The Type-X woofer utilizes a custom, one-piece, cast aluminum Exo-Frame with perimeter venting. The unique design provides the ultimate in voice coil cooling, creating a one-way airflow, keeping hot air from coming into contact with the voice coil. The frame also features an integrated spider landing and heat transfer plate.

Rubber Concealing Ring: The woofer includes a rubber concealing ring to cover the screw holes when top mounting the woofer. The top-mounted concealing ring increases the woofer's top mounting measurement to 1.25".


Recommended Sealed Box Volume: The sealed box sizes recommended by Alpine range from 0.5 cu/ft to 1.0 cu/ft. with an ideal volume of 0.65 cu/ft.

Recommended Vented Box Volume: The vented box sizes recommended by Alpine range from 0.8 cu/ft to 1.5 cu/ft. with an ideal volume of 1.4 cu/ft. A slot vent, with the dimensions of 11" x 1" x 22", is recommended.

Our Product Research Team

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