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Alpine SWR-1041D

10" subwoofer with dual 4-ohm voice coils

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  • Alpine SWR-1041D

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Item #: 500SWR1041
 
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Our take on the Alpine SWR-1041D

by Steven Johnson
Alpine

What's a component sub and why would I want one?

A component sub is simply a speaker that's designed to reproduce bass once it's installed in a compatible enclosure. Think about the impact of a movie soundtrack in a big theater or even in your own home HDTV setup. A component sub can add the same kind of power to the music in your car. And a car sub is not all about the boom that you hear on a street corner (although that's cool too) - you can pair a component sub with your choice of enclosure to get bass just the way you like it, from tight and punchy to fat and loose. And once you experience music in your car with a well-tuned subwoofer, you'll never go back.

Got enough juice? Get an amp for your new sub Go ahead — crank up that volume knob because Alpine's top-of-the-line 10" subwoofer can definitely take it! The precision-crafted SWR-1041D 10" dual 4-ohm voice coil Type-R sub handles lots of bass power, and still provides the accuracy and crystal-clear sound you expect from Alpine.

Read more

The motor structure and double-stacked magnets focus magnetic energy within the vented pole piece for awesome power handling. The pulp cone has been reinforced with Kevlar® (the material used in bulletproof vests) for extra rigidity. A 1" Santoprene rubber surround aids in cone travel while guarding against decay that can mar speaker output. An extended spider landing area provides extra excursion for fuller bass.

The dual 4-ohm, 2" voice coils are big enough to handle up to 1,000 watts of peak power and provide system wiring flexibility. The tinsel leads are woven into the dual progressive Nomex spiders so you don't have to worry about them splitting apart. With this design, you'll get nearly 3" of cone excursion for maximum output. An aluminum diecast frame provides a secure, non-resonant housing.

The SWR-1041D is designed for use in sealed or ported enclosures.

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

Details:
  • Kevlar®-infused pulp cone
  • 1" Santoprene rubber surround
  • dual 4-ohm, 2" voice coils
  • frequency response 28-1,000 Hz
  • power range 100-300 watts RMS
  • peak power handling 1,000 watts
  • sensitivity 85 dB
  • top-mount depth 5-15/16"
  • sealed box volume: 0.5-0.8 cubic feet
  • ported box volume: 0.6-1.25 cubic feet
  • Recommended Q-Logic Box Type: 1, 2
  • warranty: 1 year

Priced per speaker

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs
Size 10 -inch
Impedance 4 ohms
Cone Material Kevlar Reinforced Pulp
Surround Material 1" Santoprene Rubber
Ideal Sealed Box Volume (cubic feet) 0.65
Ideal Ported Box Volume (cubic feet) 1
Port diameter (inches) 3
Port length (inches) 12
Free-Air No
Dual Voice Coil Yes
Sensitivity 85 dB at 1 watt
Frequency Response 28 - 1000 Hz
RMS Power Range (Watts) 100-300
Peak Power Handling (Watts) 1000
Top Mount Depth (inches) 5 15/16
Bottom Mount Depth (inches) 6 7/16
Cutout Diameter or Length (inches) 9 3/16
Vas (liters) 29
Fs (Hz) 30
Qts 0.41
Xmax (millimeters) 13.87
Parts Warranty 1 year
Labor Warranty 1 year
Product Research
What's in the box?

Download owner's manual

  • One 10" Dual-voice-coil subwoofer
  • Type-R subwoofer application guide
  • Warranty card
  • Product survey card

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Features
Specifications

Manual Corrections

Features

Kevlar Reinforced Pulp Cone: This Alpine Type-R subwoofer has a Kevlar reinforced pulp cone. Kevlar adds strength and tear resistance to the woofer cone while maintaining the benefits of a pulp cone design. There is also an oversized inverted dust cap of the same material, which increases rigidity and virtually eliminates distortion at extreme volume levels.

Santoprene Rubber Surround: The high-excursion 1" Santoprene rubber surround is durable and resistant to the elements, resulting in a very reliable performance. The surround is specially designed to resist deformation that is common in most woofers with wide surrounds. This design gives the surround more control over the woofer cone to reduce distortion and possible driver failure.

Dual Progressive Nomex Spiders: This subwoofer has dual progressive Nomex spiders for added stability and mechanical durability. The custom progressive rolls give the woofer a longer, more linear stroke with maximum centering and restoring force. Special edge control design and Nomex construction provide excellent tear resistance, strength and long-term reliability. By integrating the tinsel leads into the top spider, a nearly 3" peak-to-peak excursion can be achieved with a shallow cone design.

Magnetically Optimized Motor Structure: Through Alpine's advanced magnetic circuit design, this woofer offers better sound quality, and a higher sensitivity and power handling capability:

  • Compound Radius Curve Pole Geometry: This patent-pending design intensifies the magnetic field for higher SPL and lower distortion. The magnetic field is balanced over a wider area for better control at high excursion.
  • Extra Length Extended Pole: The extra long pole piece provides additional surface to capture radiated heat for additional power handling.
  • Extra Thick Top Plate: This keeps more windings in the magnetic gap for better control.
  • Double Stacked Magnets: These provide the powerful magnetic energy and extra depth for high SPL and maximum control.
  • Bumped Back Plate: This "bottomless" design provides extra room for longer cone excursions.
  • Optimally Saturated Pole: This reduces magnetically induced heat by eliminating eddy currents throughout the voice coil stroke, and evens flux distribution to eliminate "hot spots."

Cast Aluminum Frame: The woofer is mounted to a custom cast aluminum frame for added strength. This high mass frame also dissipates heat quickly to make it an integral part of the woofer's thermal management system.

Heat Transfer Plate: This subwoofer contains an integrated heat transfer plate that is thermally coupled to the voice coil. This plate pulls heat away from the voice coil and transfers it to the cast aluminum frame, achieving up to 20% additional power handling, and better reliability.

Dual Flare Pole Vent: Another part of the thermal management system is the unique dual flare design of the pole vent. This maximizes the flow of cooler air to the voice coil, and results in better power handling.

Dual Voice Coils: For increased system flexibility, the woofer has two 4-ohm voice coils. 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.

Spring Posts: The woofer has two pairs of spring posts which will accept pin connectors and up to 8 gauge bare wire.

Specifications

Power Handling: This woofer has a total RMS power rating of 300 watts and a total peak power rating of 1000 watts. Each voice coil carries an RMS power rating of 150 watts and a peak power rating of 500 watts. 

Recommended Sealed Box Volume: The sealed box sizes recommended by Alpine range from 0.5 cu/ft to 0.8 cu/ft. Within this range, the ideal size recommended by Alpine is 0.65 cu/ft, so this is the enclosure recommended by Crutchfield.

Recommended Vented Box Volume: The vented box sizes recommended by Alpine range from 0.6 cu/ft to 1.25 cu/ft. Within this range, the ideal size recommended by Alpine is 1.0 cu/ft, so this is the enclosure recommended by Crutchfield. One 3" diameter x 12" long port should be used with the 1.0 cu/ft enclosure.

Manual Corrections

Frequency Response: The manual lists the frequency response as "Fs-1kHz" (Fs=Free Air Resonance frequency). According to Alpine, the actual frequency response is 28Hz-1kHz.

Recommended Enclosures: The manual only lists the recommended sealed box volume range. The vented box volume recommendations were obtained directly from Alpine.

 

 
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