Garage
Shop

See all parts that fit your 1968 LeSabre

Hifonics HFX12D4BK + Atrend 12SQL Subwoofer Enclosure

800W Max HFX Series 12" Dual 4-Ohm Car Subwoofer (400W RMS)

Hifonics
Shop all Hifonics
highlight-star-icon

• 800 watts Watts Max
• 400 watts Watts RMS
• Pressure treated foam surround
• Poly-cotton spider
• Heavy duty powder coated steel frame
• Vented aluminum former holds a 2" voice coil

Learn more about the hfx12d4bk_12sql

We apologize

This item has been discontinued


Loading...
Limited time!
KFC-415C main

Kenwood KFC-415C

320W Peak (80W RMS) 4x10" Performance Series 2-Way Coaxial 4-ohm Car Speakers

25
-45.00%

$99.00

List price $180.00

H410 main

Cerwin-Vega H410

420W Peak (140W RMS) 4x10" Vega Series 2-Way Coaxial 4-ohm Speakers

-16.67%

$99.99

List price $119.99

Limited time!
50CSC4104 main

Kicker CSC410 (50CSC4104)

450W Peak (150W RMS) 4x10" CS Series 2 Way Coaxial 4-ohm Speakers

1
-33.36%

$79.96

List price $119.99

51KSC41004 main

Kicker KSC410 (51KSC41004)

300W Peak (150W RMS) 4x10" KS Series 2 Way Coaxial 4-ohm Speakers

-13.33%

$129.99

List price $149.99

H7410 main

Cerwin Vega H7410

640W Peak (100W RMS) 4x10" HED Series 2-Way Coaxial 4-ohm Speakers

14
-16.67%

$69.99

List price $83.99

V410 main

Cerwin-Vega V410

540W Peak (180W RMS) 4x10" Vega Series 2025 Edition 2-Way Coaxial 4-ohm Speakers

DMDX410 main

Diamond Audio DMDX410

270W Peak (90W RMS) 4x10" DMDX Series 2-Way Coaxial 4-ohm Car Speakers

H7410, SDSK2, SDRLR1, BTK106 main

Cerwin-Vega H7410 with Speaker Installation Kit

Includes: (Pair) 4" x10" Coaxial Speakers, Sound Damping , Roller and Panel Removal Kit

153
-28.22%

$98.13

List price $136.71

RVM-35V1 main

MB Quart RVM-35V1

3.5" Touchscreen Multi-Zone Digital Multimedia Receiver with Bluetooth for RV's

-10.38%

$189.99

List price $211.99

RV.R1 main

DS18 RV.R1

Multi-Zone Digital Audio Receiver with Bluetooth Audio Streaming for RV's

Description


Hifonics brand icon

Authorized dealer

Hifonics HFX12D4BK

800W Peak (400W RMS) HFX Series 12" Dual 4-Ohm Car Subwoofer
Quantity: 1

Product Details:

  • 12" Dual 4 ohm ohm HFX Series Subwoofer
  • Power Handling:
    • Peak: 800 watts watts
    • RMS: 400 watts watts
  • Spade style terminals for easy installation
  • The pressure treated foam surround along with the poly cotton spider helps keep the piston motion of the subwoofer linear and distortion free
  • Specialized Hifonics poly cotton spider, along with the surround, allows the woofer to handle more power with minimum distortions
  • A unique Hifonics heavy duty powder coated steel frame allows back venting, which exchanges heat with cool air, resulting in more power handling and increased reliability
  • Vented aluminum former holds a 2" voice coil while allowing the heat to be exchanged
  • Vented high energy motor assembly with heavy duty magnets increases power handling and increases SPL
  • Top-mount depth: 5.61""
  • Cutout diameter: 10.94""
  • Sensitivity: 86 dBdB
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty
  • Priced Individually

Atrend 12SQL

Empty Single 12" Medium Sealed Subwoofer Enclosure
Quantity: 1

Product Details:

  • 12" Single Medium 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: 12.4"
  • Subwoofer cutout diameter: 11.12"
  • Total box volume: 1.00 cubic feet
  • Dimensions: 13.50" L x 13.50" H x 13.50" W
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Product history:

Hifonics HFX12D4BK, 12SQL thumbnail
(newest, current model)
Hifonics HFX12D4 thumbnail
(previous model, replaced by Hifonics HFX12D4BK + Atrend 12SQL Subwoofer Enclosure)
Hifonics HFi12D4 thumbnail
(previous model, replaced by Hifonics HFX12D4)
Hifonics HF12D4 thumbnail
(previous model, replaced by Hifonics HFi12D4)

Best selling similar products

R2S-1X10 small

Rockford Fosgate Prime R2S-1X10

• Sealed truck enclosure with 1 10" Prime R2 Series Subwoofer
• 200 watts RMS (400 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 19" L x 13.5" H x 5.25" W x 3.25" W2

(17)

$239.99

List price $239.99

TNE212D small

MTX Audio TNE212D

• Sealed enclosure with 2 12" Terminator Series Subwoofer
• 200 watts RMS each
• Final Impedance: 2-ohm
• Dimensions: 29.63" L x 14" H x 13.5" W

(32)

$219.95

List price $249.95

49L7TDF122 small

Kicker L7TDF122 (49L7TDF122)

• Sealed truck enclosure with 1 12" Solo-Baric L7 Series Subwoofer
• 300-600 watts RMS Power Rating
• Final Impedance: 2-ohm
• Dimensions: 23 7/8" L x 6 1/2" H x 15" W

(5)

$399.99

List price $429.99

CLS113RG-W7AE small

JL Audio CLS113RG-W7AE

• ProWedge 13" W7AE Loaded Sealed Subwoofer Enclosure
• 3000W Peak
• 1500W RMS
• 3 Ohm Final Impedance
• High Grade Black Carpet Finish
• Engraved JL Audio and W7 Logos
• Rear Firing Design
• 10th Anniversary Edition W7 Subwoofer

(8)

$2299.99

List price $2299.99

BE-TSLAY-G1P small

NVX Loaded BOOST Box - 2020-2023 Tesla Model Y - BE-TSLAY-G1P (Passenger's Side)

• Sealed BOOST enclosure with 1 10" N Series Subwoofer (Passenger Side)
• Fits select 2020-2023 Model Y (5-seat models only)
• 500 watts RMS (1000 watts Peak)
• Final Impedance: 2-ohm

(2)

$279.99

List price $562.99

BE-TOYHIG3-VS102 small

NVX Loaded BOOST Box - 2014-2019 Toyota Highlander - BE-TOYHIG3-VS102

• Sealed BOOST enclosure with 1 10" N Series Subwoofer
• Fits select 2014-2019 Highlander Hybrid and Highlander
• 500 watts RMS (1000 watts Peak)
• Final Impedance: 2-ohm

(2)

$349.99

List price $437.99

TRTP122 small

Kicker TRTP122 (48TRTP122)

• Sealed truck enclosure with 2 12" CompRT Series Subwoofer
• 250-500 watts RMS Power Rating
• Final Impedance: 2-ohm
• Dimensions: 27 1/2" L x 6 1/8" H x 14 5/8" W

(4)

$349.99

List price $379.99

BXSQ112 small

NVX BXSQ112

• Sealed enclosure with 1 12" SQ Series Subwoofer
• 600 watts RMS (1200 watts Peak)
• Final Impedance: 2-ohm

$349.99

List price $479.99

49DL7TDF122 small

Kicker DL7TDF122 (49DL7TDF122)

• Sealed enclosure with 2 12" Solo-Baric L7T Series Subwoofer
• 1200 watts RMS Power
• Final Impedance: 2-ohm
• Dimensions: 38-3/16" L x 8-1/4" H x 17-1/8" W

(1)

$749.99

List price $849.99

TL7T122 small

Kicker TL7T122 (46TL7T122)

• Sealed truck enclosure with 1 12" Solo-Baric L7T Series Subwoofer
• 600 watts RMS power handling
• Final Impedance: 2-ohm
• Dimensions: 21.5" L x 13.75" H x 7.75" W x 4.375" W2

(9)

$295.96

List price $399.99

Specifications & Details


Subwoofer Specifications
Series
HFX
Subwoofer Size
12"
RMS Power Handling
400 watts
Peak Power Handling
800 watts
Woofer Surround
Foam
Sensitivity
86 dB
Subwoofer Design
Round / Circle
Enclosure Specifications
Box Type
Sealed
Number of Subwoofers
1
Box Style/Shape
Square/Rectangle
Wood Thickness
3/4"
Number of Terminals
1
Terminal Type
Spring posts (banana clip ready)
Box Exterior Color
Charcoal
Box Finish
Carpet
Second Width
13.50"
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

HFX12D4BK, 12SQL

Weight:

29.50lbs

Internal SKU:

hfx12d4bk_12sql

Internal Product ID:

192829

Customer Ratings & Reviews


Hifonics HFX12D4BK + Atrend 12SQL Subwoofer Enclosure thumbnail image

5 star
67%
4 star
25%
3 star
8%
2 star
0%
1 star
0%



Durability
4.7
Value
4.8
Features
4.6
Design
4.7
Usability
4.9

Customer Photos & Videos


Customer Reviews

Sort by:

Loading...

Nice box

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

This is a really nice box. I have a Boston Acoustics G5 in it and it pounds!!! I wanted to save space in trunk by switching to small sealed box instead of the big ported I was using previously. I thought I would be taking a hit in SPL but surprisingly I didn't. Just a gain in SQ. And I gained about 50% more trunk space.

By Dangelo on September 21, 2017 Checkmark Icon Verified purchase

42 found this helpful


Good value

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

Great box for the value. I have a JL 12w6 in it and it sounds amazing. My one issue was the aesthetics, it arrived looking like it needed a bit more carpeting but for the price and sound quality i’ll take it.

By Alex on October 20, 2022 Checkmark Icon Verified purchase

39 found this helpful


Nice box

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

Good quality good solid box sub sounds awesome in this box

By Mike on December 12, 2023 Checkmark Icon Verified purchase

38 found this helpful


Great Box!

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

I have an Alpine Type-X 12" Subwoofer that I had put in a ported box. It sounded great and it hit hard. Problem was that it was taking up to much of my trunk space and I wanted some back so I started searching for a sealed box.
I purchased this box after looking through several reviews of the boxes on Amazon. They appeared to be hit or miss. This box appeared solid and a different sized box from this manufacturer had good reviews so I gave it a try.
The box arrived well packaged and in perfect condition and appeared to be well constructed. The Atrend badge easily unscrews off if you would like to remove it. It had enough room on it that I was able to mount my Eclpise ZA1200 directly on to it. Great box for the price.
Now that I have my sub in the sealed box, I have some more trunk room although I sacrificed some bass (not as loud as it was) but I was expecting that to happen.
It is a great box!

By Martin on July 28, 2017 Checkmark Icon Verified purchase

38 found this helpful


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

I just received two of these boxes today. I put them in my 2017 Chevy Camaro. I have 2 Rockford fosgate P 2's and I have a Rockford fosgate T750X amp pushing them. Have them wired at 1 ohm. Man my system sound so good. If you dont have much trunk space this is the way to go. And the Rockford fosgate setup is amazing.

By Raymond on February 3, 2023 Checkmark Icon Verified purchase

37 found this helpful


Solid!

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

I put my older P2D4-12 in this after gluing polyfill to the insides. Hits harder than I remember it hitting before. Attend makes SOLID boxes.
Thank you.

By Sozo on November 11, 2017 Checkmark Icon Verified purchase

38 found this helpful


Quality craftsmanship, and a great price!!!

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

This Atrend 12SQL is a great box for any budget build. Even though it's listed as medium duty I've sampled various 12" subwoofers in this box with different amplifiers at various power levels and not once did it disappoint. This is a box you can install with little or no modifications and be pleasantly happy with the lows it produces.

By David on June 15, 2023 Checkmark Icon Verified purchase

30 found this helpful


Good value.

The following review is for HFX12D4BK, which is a part of the bundle you are viewing.

This is a good value. So far, I'm pleased with the performance of these subs. I'll monitor them for durability and bump up to a better-known brand if they fail. I already had a hifionics amplifier, that I have gotten great performance out of for the past several years.

By Hubert on December 2, 2022

26 found this helpful


The following review is for HFX12D4BK, which is a part of the bundle you are viewing.
By Bradley on November 4, 2022 Checkmark Icon Verified purchase

26 found this helpful


The following review is for 12SQL, which is a part of the bundle you are viewing.
By Josef on December 3, 2024 Checkmark Icon Verified purchase

6 found this helpful




CVS212RG-W6v2 small

JL Audio CVS212RG-W6v2

Two 12" Dual 4 ohm Subwoofers (12W6v2-D4) in a Sealed JL Audio ProWedge Enclosure w/ Steel Mesh Grille

$899.95

List price $1299.99

No picture

NVX NSP410 - Open Box, Good

480W Peak (160W RMS) 4x10" N-Series 2-Way Coaxial Car Speakers with 20mm Silk Dome Tweeters

$26.99

List price $53.99

SPD8202 small

Stinger SPD8202 (Gold)

Inline ANL Fuse Holder with One 4 Gauge Input and One 4 Gauge Output

$26.99

List price $59.99

MX-18SP small

B-52 MX-18SP

550W Single 18" Direct-Radiating Passive Subwoofer with 3-1/2” High-Temperature Polyamide Voice Coil

$339.99

List price $799.99

GX2148 small

XO Vision GX2148 (BLACK)

9" TFT-LCD Overhead Monitor with Built-in DVD Player, USB and SD Card Inputs, Remote, and Built-in FM Transmitter (GX-2148)

(1)

$189.99

List price $389.99

MP HTS 5100 SS MKII small

Monster Cable MP HTS 5100 SS MKII

Signature Series Home Theater Reference HTS 5100 MKII PowerCenter with Monster Clean Power Stage 4

$800.00

List price $799.99

FD1438B small

Scosche FD1438B / FD1438 Dash Kit

Install a new Double-DIN car stereo in select 2009-2014 F-150 (Black)

(1)

$27.99

List price $31.95

MP OTG300 USB-W EFS small

Monster Cable Power Strip (MP OTG300 USB-W EFS)

Outlets To Go Power Strip with Quick-Charging High-Power USB Port and 3 Ultra-Wide Spaced Outlets

$39.99

List price $49.99

PGHGM5_PXAMG small

Peripheral PGHGM5 + PXAMG (Combo)

Universal iPod with HD Radio Integration through your Factory Car Stereo for Select 2003-2009 GM Class-2 Databus Vehicles

$151.96

List price $189.99

Related Searches


Save up to 10 different vehicles in your garage
Vehicle
Store
Delete

1973 Chrysler Imperial

1968 Buick LeSabre

2022 Ram 1500

2020 Ram 2500

1971 Buick GS

2020 Audi Q7

1997 BMW 328i

1977 Buick Opel

2011 Dodge Nitro

1983 Audi 4000

Add vehicle Clear all vehicles
Where to find vehicle info
Are you sure you want to clear your garage?
This action cannot be undone. Confirm
This page was not designed for products.
If you continue, you will be redirected to a category customized for your vehicle. Continue
Loading...
Identify your vehicle and submodel details
  • Owner's manual
  • Vehicle's insurance card
  • Vehicle registration
  • Vehicle produced after 2005: Inside driver's side door
  • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
Car Info Side Door Icon
Vehicle Registration Icon
Vehicle Insurance Icon

Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

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