Expert Service 1-877-289-7664 [Hours]

Boom. SUBTEMBER is here!

Hifonics Atlas AS12SQD4 ( AS12SQ D4 )

12" Dual 4 Ohms Atlas Series Square Subwoofer

Discontinued
|

We apologize

This item has been discontinued

Get FAST answers from customers ASK a Question See questions answers

  • 12" square high performance subwoofer
  • 900 watts RMS continuous power
  • 1800 watt maximum power
  • Hifonics Atlas cast aluminum chrome basket
  • woven glass fiber cone
  • acrylic illuminated dust cap
  • 1.4" rubber surround
  • Nomex fiber spider with woven tinsel leads
  • 3" bi-fair wound 4 layer voice coil
  • thick aluminum voice coil former
  • dual 4-ohm voice coil with 58mm voice coil winding
  • 8 flare shape magnet design with 180oz magnet
  • 10mm polished top plate
  • chrome plated flare T-plate
  • push pin terminal
  • 1-year SonicElectronix.com warranty

Subwoofer Specifications

Subwoofer Series
Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
12"
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
1800 watts
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
900 watts
Voice Coil(s)
Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.
Dual
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
4 ohms
Voice Coil Diameter
Diameter of voice coil, usually measured in inches.
Sensitivity
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
 
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
85.88 dB
Xmax (millimeters)
Typically measured in millimeters, the Xmax value is the measure of a speaker cone's maximum excursion in one direction while maintaining a linear behavior.
Subwoofer Design
This is the design of the subwoofer or the opening of the subwoofer enclosure. Each design has it's own benefits, whether it is a square, circle, or oval.

Round/Circle: This is the typical and common subwoofer design. They have a round cone and are a circle in design.

Square: These woofers are able to achieve a greater cone area in a smaller space. Because of the greater surface area, some square subwoofers will be louder than a round subwoofer of the same size.

Main Cone Color
This is the color of the speaker's or subwoofer's cone.
Woofer Composition
Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
Woofer Surround
A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
Rubber
Magnet Structure
Defines the overall structure of the subwoofers magnet.
Subwoofer Grille
Most subwoofers are able to accommodate a universal grille; however, some subs include a grille and others have a specific, optional grille available for purchase separately. If "yes", then the subwoofer includes a grille. If "optional (sold separately)" the matching grille will need to be purchased in addition to the sub.
Re-Cone Kit Available
Some higher end subwoofers have replaceable cone assemblies. In case of a blown woofer, a recone kit allows for a simple replacement, as opposed to purchasing an entire new subwoofer.

Recommended Enclosure Specifications

Recommended Enclosure Type
This is the recommended type of enclosure that the subwoofer should be installed into. Some subwoofers are specially designed for particular enclosures.

Sealed: These enclosures completely enclose the air inside the box. These boxes produce a tight bass.

Ported/Vented: These enclosures have a slot of air to escape from the box. The result is a sound that has more "boom".

Bandpass: These are a combination of both sealed and ported enclosures. They can be very efficient, but require tuning for the best response.

Minimum Sealed Box Volume
This value indicates the minimum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Optimum Sealed Box Volume
This value indicates the ideal sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Maximum Sealed Box Volume
This value indicates the maximum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Minimum Ported Box Volume
This value indicates the minimum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Optimum Ported Box Volume
This value indicates the ideal ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Maximum Ported Box Volume
This value indicates the maximum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.

Electromechanical Parameters

Free-Air Resonance (Fs)
The free-air resonance frequency of the subwoofer, measured in Hz. At this frequency the weight of the moving parts is perfectly balanced with the subwoofers suspension system.
Equivalent Compliance (Vas)
This is the amount of air that has the same stiffness as the subwoofers suspension. The greater the rating, the lower the stiffness and larger recommended enclosure. It is measured in Liters.
Total Speaker Q Value (Qts)
This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including all dimensionless losses. Essentially, a high Qts value (closer to 1.0) means the subwoofer is great for sealed enclosures and a low Qts value (closer to 0) means the woofer is great in vented enclosures. A Qts of around 0.45 means the woofer will work decently in either enclosure type.
Electrical Q Value (Qes)
The subwoofers relative damping (Q) at the resonance frequency (Fs), including electrical losses. Also called the mechanical damping of the subwoofer. The unitless measurement usually varies from 0.5 10.
Electrical Resistance of Voice Coil (Re)
Amount of DC resistance of the subwoofer when measured with an ohm meter. Typically, this will read less than the impedance rating of the subwoofer.
Mechanical Q Value (Qms)
This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including mechanical losses. Also called the mechanical damping of the subwoofer. This unitless measurement usually varies from 0.5 10.
Efficiency Bandwidth Product (EBP)
This number represents the trade off between having an efficient woofer and one with a wide bandwidth. To calculate this number, take the Fs and divide it by the Qes. If the number is below 50, the woofer is designed for a sealed enclosure only. If it's between 50-100 it can be used in either. Lastly, if it's greater than 100 it's designed for vented enclosures.

Specials with this Item

Promotions
Promotions we have offer More Ways to Shop for items that are on clearance, last chance, special offer and sales, Made in America, and more!

Warranty and Return Policy

Parts Warranty Duration
Not warranted
Labor Warranty Duration
Not warranted
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
100%
4 Star
0%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
5.0
Value
4.9
Features
5.0
Design
5.0
Usability
5.0
tj

eureka ca

Overall
Durability
Value
Features
Design
Usability
best ever by far. byebye. J.L Audio

September 20, 2012

I have destroid the box it was in an had the law called on me by a neighbor that lives on the other side of block oh yeah

0 of 0 found this helpful

Help our customers find the most helpful reviews

Scott

Stirum, ND

Overall
Durability
Value
Features
Design
Usability
This sub is amazing

July 13, 2007

I bought this sub from sonicelectronix at a good price. I wanted this sub to save a little room because I had 2 subs. This sub is much louder, much cleaner deeper bass. I have it hooked up to a 400 watt rms hifonics amp and wired at 8 ohms and it still wangs. This is a very good buy and if you want low, clean, solid bass then this is the sub for you. I'm very impressed with this sub and i'm not giving it the full 900 watts it recommends. For loudness and great bass this is the sub you want. I would put it up against the Kicker L7 any day.

0 of 0 found this helpful

Help our customers find the most helpful reviews

Joshua

Cahokia, IL

Overall
Durability
Value
Features
Design
Usability
Worth Every Penny!

January 23, 2006

I bought one of these subs just for a little extra bass. I have it hooked up to a generic mini system in my house. It is only getting about 100 watts peak from the stereo, yet it shakes THE WHOLE HOUSE. I've knocked stuff off of the wall, came close to braking my window in the room in which it is positioned, and whenever I have it up loud enough and shut the door on my room, it sounds like its going to blow the door off the hinges. Great buy! Worth every penny! Even if you're hooking it up to a generic stereo!

0 of 0 found this helpful

Help our customers find the most helpful reviews

Derrick

Ashland City, TN

Overall
Durability
Value
Features
Design
Usability
True power from the Gods.

December 2, 2005

I have two of these along with a HiFonics XX-Hercules amp wired at 2000W RMS @ 1 ohm in the back of my Ranger Ext. Cab... so far no one has been louder than me. Also have a Tsunami 2-farad cap, which isn't big enough cause I've had my dash lights go completely out (depending on the type of bass). The only thing that has disappointed me was after about 3 weeks after having it installed, my amp fried, which was my fault... and my subs are perfectly fine. I'm gonna get two HiFonics Brutus BX1205D amps to take the place of the Hercules. Haven't had the LED lights hooked up yet but that will change soon as I get my Brutus's. And for you Kicker lovers out there, this sub will put a 12" L7 to shame with ease, even in looks. I guarantee you will not be disappointed with this sub... as long as you have a amp to power it enough.

0 of 0 found this helpful

Help our customers find the most helpful reviews

Vincent

Monroe, LA

Overall
Durability
Value
Features
Design
Usability
Unbelievable Bang For The Buck!

November 23, 2005

These subs are unbelievable. The price is a steal for the quality of the sub. Everyone that hears them is SO impressed. I'm getting another pair for my other car real soon!

0 of 0 found this helpful

Help our customers find the most helpful reviews

Rene

Kenner, LA

Overall
Durability
Value
Features
Design
Usability
great sub

November 18, 2005

great sub i have 1 an pushing 1100 wats in to it with a brutus 1605d and it really thumps only problem is my amp kicks off a little to much.

0 of 0 found this helpful

Help our customers find the most helpful reviews

Jason

Old Lyme, CT

Overall
Durability
Value
Features
Design
Usability
Great looking and performing sub

November 11, 2005

These subs are really underpriced. They hit VERY hard and VERY deep. I like them because they require a relatively small box both sealed and ported... Very clear and loud.

0 of 0 found this helpful

Help our customers find the most helpful reviews

Accessory Tools and Products

Accessories added

NVX 25 ft. of True Spec 12 Gauge Speaker Wire

100% OFC wire with EnvyFlex metallic jacket insulates and protects against damage from extreme conditions.

Your Price $39.99

25 ft. of Streetwires 12 Gauge Speaker Cable

You'll need speaker wire to hook up that new subwoofer!

Your Price $44.95

Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

Your Price $14.99

20 Square Feet of Sound Dampening Material

NVX Sound dampening is thicker than competitors, eliminates rattles and gives you bigger bass!

Your Price $59.99

Dynamat Sound Dampening Trunk Kit

Did you know sound dampening will reduce those annoying rattles and even increase your SPL?

Your Price $109.95

Stinger Sound Dampening Trunk Kit

Stinger's Roadkill sound dampening series is sure to kill unwanted road noise and rattles! Enough sound dampening for your whole trunk!

Your Price $69.99

12 oz. Can of Adhesive Spray

Spray adhesive used for adhering carpet to subwoofer boxes without bubbles.

Your Price $6.99

Spring Post Terminal Cup

Makes adding a spring post terminal to an enclosure simple! Banana clip ready!

Your Price $3.99

40" x 15 Ft Piece of Premium Un-Backed Automotive Trim Carpet

Durable design for long life-span, available in many colors and shades.

Your Price $39.99

Gold Plated Dual Terminal Banana Plug Connector

Enables an expandable, secure connection accepting up to 8 gauge wire.

Your Price $1.99

Car Stereo and Speaker Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

Your Price $12.99

Xscorpion 9-Piece Nylon Plastic Pry and Chisel Tool Set

Easily removes dash/trims, door clips, panels and pins, rubber grommets and vehicle emblems.

Your Price $14.99

Cordless Multi-Functional Heat Tool Soldering Iron Kit

Continuous working lock allows you to work without holding down trigger.

Your Price $79.99

4 Ft of 1/4" Thick Black Heat Shrink Tubing

Provides abrasion resistance and added protection for your cables.

Your Price $3.99

2" Universal, Professional Heavy Duty Roller for Sound Damping/Dampening

Universal rubber roller to make it easy to install sound dampening.

Your Price $7.99

1mm All Purpose Solder

Solder is all purpose for use on most projects where solder is needed.

Your Price $8.99

Impedance Meter / Signal Generator

Easy to locate tuning frequencies of passive radiators and ported enclosures

Your Price $299.99

1 Hifonics Atlas AS12SQD4 ( AS12SQ D4 ) Subwoofer

Mono Amp

2 Channel Amp - Bridged

2 Hifonics Atlas AS12SQD4 ( AS12SQ D4 ) Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

3 Hifonics Atlas AS12SQD4 ( AS12SQ D4 ) Subwoofers

Mono Amp

4 Channel Amp

4 Hifonics Atlas AS12SQD4 ( AS12SQ D4 ) Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Hide answersShow all answers | Sort by
No questions have been asked about this item. Be the first!

Product Summary

Manufacturer

Model Number

AS12SQD4

Weight

39.00lbs

Internal SKU

as12sqd4

Internal Product ID

5169

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Hifonics Atlas AS12SQD4 ( AS12SQ D4 )