Tru Spec 1541YTM Empty Quad 8" Enclosure 4x Sundown Audio SA-8 v.3 D4 Sub Bundle

Home

Car Audio & Electronics

Car Subwoofers

Car Subwoofer Boxes

Car Subwoofers with a Box (Loaded Sub Boxes)

All Car Subwoofers with Boxes

Tru Spec 4X8SUPB_4X_SAV38D4

Tru Spec

Shop all Tru Spec

by Tru Spec

About
Reviews
Add-ons
Recently Viewed
Related Searches

Out of stock

Tru Spec 4X8SUBP with 4x Sundown Audio SA-8 v.3 D4 Image 1 — Tru Spec 4X8SUBP with 4x Sundown Audio SA-8 v.3 D4

Tru Spec 4X8SUBP with 4x Sundown Audio SA-8 v.3 D4 Image 2 — Tru Spec 4X8SUBP with 4x Sundown Audio SA-8 v.3 D4

Tru Spec 4X8SUBP with 4x Sundown Audio SA-8 v.3 D4 Image 3 — Tru Spec 4X8SUBP with 4x Sundown Audio SA-8 v.3 D4

Tru Spec 4X8SUBP with 4x Sundown Audio SA-8 v.3 D4 Image 4 — Tru Spec 4X8SUBP with 4x Sundown Audio SA-8 v.3 D4

Tru Spec 4X8SUBP with 4x Sundown Audio SA-8 v.3 D4 Image 5 — Tru Spec 4X8SUBP with 4x Sundown Audio SA-8 v.3 D4

Tru Spec 4X8SUBP with 4x Sundown Audio SA-8 v.3 D4 Image 6 — Tru Spec 4X8SUBP with 4x Sundown Audio SA-8 v.3 D4

Tru Spec 4X8SUBP with 4x Sundown Audio SA-8 v.3 D4 Image 7 — Tru Spec 4X8SUBP with 4x Sundown Audio SA-8 v.3 D4

Tru Spec 4X8SUBP with 4x Sundown Audio SA-8 v.3 D4 Image 8 — Tru Spec 4X8SUBP with 4x Sundown Audio SA-8 v.3 D4

Tru Spec 4X8SUBP with 4x Sundown Audio SA-8 v.3 D4 Image 9 — Tru Spec 4X8SUBP with 4x Sundown Audio SA-8 v.3 D4

Tru Spec 4X8SUBP with 4x Sundown Audio SA-8 v.3 D4 Image 1

Tru Spec 4X8SUBP with 4x Sundown Audio SA-8 v.3 D4 Image 2

Tru Spec 4X8SUBP with 4x Sundown Audio SA-8 v.3 D4 Image 3

Tru Spec 4X8SUBP with 4x Sundown Audio SA-8 v.3 D4 Image 4

Tru Spec 4X8SUBP with 4x Sundown Audio SA-8 v.3 D4 Image 5

Tru Spec 4X8SUBP with 4x Sundown Audio SA-8 v.3 D4 Image 6

Product highlights

Product highlights

• 8" Quad Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 3.50 cubic feet
• Computer-designed CNC cut

Learn more about the 4x8supb_4x_sav38d4

Universal – fits most vehicles.

Similar items | Update vehicle | Vehicle store

List price $1839.95

-18%

$1499.95

with warranty

Starting at $94/mo with

Quantity Qty

Out of stock - Order risk-free, cancel any time.

Brand new

Alternative financing

No Credit Option

Flexible Lease Payments

Early Purchase Options

Quick Approval Decision

Add an Extended Warranty Extend logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. Read more

This plan covers:

Hassle-free immediate replacement within minutes!
Easy online claims 24/7
Covers product breakdowns and failures

Extend by 2-years $89.99

Extend by 3-years $99.99

Our X-Factor Guarantees

For over 25 years, we've been your X-Factor – the team dedicated to having the biggest impact on your shopping experience!

Award-Winning Service

FREE Shipping Orders $49+

60-Day Easy Returns

Guaranteed Lowest Price

In-House Experts

NVX - Worth the Envy - Direct to Consumer Car Audio

Other Mazda 3 owners bought

Install New Speakers in select 1993-2017 vehicles from Ford, Mazda, Mercury

-33.36%

$9.99

List price $14.99

5-1/4" / 6-1/2" Speaker to 6" x 8" Adapters for select 1981-2017 vehicles from Mercury, Mazda, Lincoln

-11.12%

$15.99

List price $17.99

Metra 70-7903 Wiring Harness

Install a new car stereo in select 2001-2021 vehicles from Mazda, Fiat

$8.99

American International MazK844

Single DIN or Double DIN Stereo Dash Kit for select 2004-2009 3 (Satin Black)

-72.24%

$14.99

List price $54.00

PAC RadioPro RP4-MZ11

Radio Replacement Interface With Built In Pre Programmed Steering Wheel Control Retention and Navigation Outputs for select 2006-2015 vehicles from Mazda

-58.05%

$158.99

List price $379.00

Limited time!

Kicker CSC65 (46CSC654)

600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers

-33.36%

$79.96

List price $119.99

Lowest price in 30 days

450W Peak (150W RMS) 1" V-Series Silk Dome Tweeters with External Crossovers

-16.67%

$49.99

List price $59.99

540W Peak (180W RMS) 6.5" N-Series 2 Way Coaxial Car Speakers

-35.19%

$69.99

List price $107.99

Add 5-1/4" or 6-1/2" Speakers to Factory 6" x 8" Mounting Locations for select 1950-2025 vehicles from Ford, Mercury, Mazda

-46.70%

$7.99

List price $14.99

Reference 5030cx main

Infinity Reference 5030cx (REF5030CX)

390W Peak (130W RMS) 5.25" Reference Series 2-Way 3-ohm Component Speaker System

-60.01%

$99.95

List price $249.95

Description

Authorized dealer

Tru Spec 4X8SUBP (1541YTM)

Empty Quad 8" Vented Prefabricated Enclosure
Quantity: 1

Product Details:

8" Quad Ported Subwoofer Enclosure
Computer-designed CNC cut
Built with proper airspace and non-restrictive port
Maximum subwoofer mounting depth: 22"
Subwoofer cutout diameter: 7.45"
Durable 3/4" Medium Density Fiberboard (MDF) construction
Total box volume: 3.50 cubic feet
Dimensions: 34" L x 14" H x 22" W

Authorized Internet Dealer

1-year Manufacturer's Warranty

Port Specifications:

Rectangular port
Number of ports: 1
Port diameter: 52"
Estimated port tuned frequency (fb): 35 Hz

Sundown Audio SA-8 v.3 D4 8" (SA8V3D4)

1200W Peak (600W RMS) 8" SA Series Dual 4-ohm Car Subwoofer (SW-SAV38D4)
Quantity: 4

Product Details:

8" Dual 4 ohm SA Series Subwoofer
Power Handling:

Peak: 1200 watts
RMS: 600 watts

Treated Paper Cone
Treated Foam Surround
Vented magnetic gap with 16 chamfered vents
Large aluminum Faraday ring for smooth acoustic response
Patented high-strength cast aluminum frame
Low distortion motor construction
High-temperature voice coil wire
Spring-loaded terminals for easy connection
Stitched-on “XL” tinsel lead wires
16 mm Xmax
Double Stacked magnet motor structure
Resonance Frequency (Fs): 40.0 Hz
Sensitivity: 82.71 dB
Recommended sealed box volume: 0.3 cubic feet
Recommended ported box volume: 0.65 cubic feet
Top-mount depth: 6.625"
Cutout diameter: 7.375"
Authorized Internet Dealer
1-year Manufacturer's Warranty

Priced Individually

Other products for your Mazda 3

Limited time!

Kicker CSC65 (46CSC654)

600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers

-33.36%

$79.96

List price $119.99

DMH-1800NEX main

Pioneer DMH-1800NEX

6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto, and SiriusXM Ready

-19.05%

$339.99

List price $420.00

Limited time!

360W Peak (120W RMS) 6.5" Club Series 2-way Coaxial 3-ohm Speakers

-28.58%

$99.95

List price $139.95

Alpine UTE-73BT

Single DIN Digital Media Receiver with Bluetooth

-16.69%

$149.95

List price $180.00

Cerwin-Vega CV15BT

Single Din Digital Media Receiver with Bluetooth

$69.99

Kicker DSC650 (43DSC6504)

480W Peak (120W RMS) 6.5” DS Series 2-way 4-ohm Coaxial Car Speakers (DSC6504)

-10.53%

$84.99

List price $94.99

Limited time!

DMH-W3050NEX main

Pioneer DMH-W3050NEX

6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay and Android Auto, and Built-in Alexa (Sirius XM Ready)

-24.20%

$469.99

List price $620.00

Cerwin-Vega XED62

600W Peak (70W RMS) 6.5" XED Series 2-Way Coaxial 4-ohm Speakers

-16.67%

$49.99

List price $59.99

Polk Audio DB652 (DB 652)

600W Peak (200W RMS) 6.5" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

-9.16%

$109.00

List price $119.99

600W Peak (300W RMS) 6.5" Mille PRO Series 3-way 4-ohm Component Speaker System

-14.89%

$999.99

List price $1175.00

Similar Products

This product is temporarily out of stock. May we recommend...

CP210-W0v3 small

JL Audio BassWedge CP210-W0v3

•Dual 10" 10W0v3-4 Loaded Ported Enclosure
• 1200W Peak
• 600W RMS
• Top-Quality MDF Construction
• Durable Dark Gray Carpet Finish
• Five-Way Binding Post Connectors
• Embroidered JL Audio Logo

(9)

$274.99

List price $349.99

Kicker DL7R122 (45DL7R122)

• Ported enclosure with 2 12" Solo-Baric L7R Series Subwoofer
• 1200 watts RMS (2400 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 33-3/4" L x 15-7/8" H x 15-1/4" W x 20-3/8" W2

(8)

$519.96

List price $699.99

BE-TOY-PRIG3 small

NVX Loaded BOOST Box - 2010-2015 Toyota Prius - BE-TOY-PRIG3

• Custom-Fit Sealed BOOST enclosure with 1 10" S Series Subwoofer
• Fits select 2010-2015 Prius
• 350 watts RMS (700 watts Peak)
• Final Impedance: 2-ohm

(5)

$349.99

List price $437.99

47QL7R122 small

Kicker 47QL7R122

• Ported enclosure with 4 12" Solo-Baric L7R Series Subwoofer
• 2400 watts RMS (4800 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 28" L x 20-1/4" H x 35-7/8" W

(2)

$1199.96

List price $1599.99

F250X00C20A-TN small

MTX Audio Thunderform F250X00C20A-TN

• 10" Amplified Loaded Subwoofer System
• 200 watts RMS
• Built-In Class Amplifier
• Speaker-Level Inputs
• Wired Remote Bass Level Control
• Compatible with select 2000-2014 F-250 Super Duty

$929.95

List price $747.95

CP112-W0v3 small

JL Audio BassWedge CP112-W0v3

• 600W Peak
• 300W RMS
• Top-Quality MDF Construction
• Durable Dark Gray Carpet Finish
• Five-Way Binding Post Connectors
• Embroidered JL Audio Logo

(13)

$229.99

List price $279.99

51PTRTP10 small

Kicker PTRTP10 (51PTRTP10)

• 10" Amplified Loaded Subwoofer System
• 400 watts RMS
• Built-In Class D Amplifier
• Variable Bass Boost
• Speaker-Level Inputs
• Wired Remote Bass Level Control

$499.99

List price $549.99

Rockford Fosgate Punch P1-2X12

• Two 12" Punch Series Stage 1 Subwoofers
• Kevlar Reinforced Paper Cone
• Tear and Fatigue Resistant
• Proprietary Spider Venting/Cooling Technique
• Solid 5/8" MDF Construction

(17)

$439.99

List price $489.99

BE-GM-SLVDC-G4 small

NVX Loaded BOOST Box - 2019-2024 Chevrolet Silverado/GMC Sierra - BE-GM-SLVDC-G4

• Sealed BOOST truck enclosure with 2 12" S Series Subwoofer
• Fits select 2019-2024 Sierra and Silverado 1500 / 3500 HD / 2500 HD / 1500 LD
• 400 watts each RMS (800 watts each Peak)
• Final Impedance: 1-ohm

(1)

$499.99

List price $719.99

CP212-W0v3 small

JL Audio CP212-W0v3

• Dual 12" 12W0v3-4 Loaded Ported Enclosure
• 1200W Peak
• 600W RMS
• Top-Quality MDF Construction
• Durable Dark Gray Carpet Finish
• Five-Way Binding Post Connectors
• Embroidered JL Audio Logo

(14)

$349.99

List price $449.99

Customer Ratings & Reviews

Tru Spec 4X8SUBP with 4x Sundown Audio SA-8 v.3 D4 thumbnail image

Overall rating distribution

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

Filter by Star Rating

1

2

3

4

5

Show only Verified Purchases

By feature average rating

Durability		5
Value		5
Features		5
Design		5
Usability		5

Customer Photos & Videos

Customer Reviews

Sort by:

Loading...

The following review is for 4x8supb, which is a part of the bundle you are viewing.

By Phillip on July 16, 2023 Checkmark Icon

Verified purchase

16 found this helpful

Report abuse

Amazing Sounds

The following review is for 4x8supb, which is a part of the bundle you are viewing.

I was skeptical at first.....Box is really well built and solid for my 8s. Never moves or fell apart after constantly banging.

By Reginald on August 2, 2024 Checkmark Icon

Verified purchase

3 found this helpful

Report abuse

The following review is for 4x8supb, which is a part of the bundle you are viewing.

By Ryan on September 10, 2024 Checkmark Icon

Verified purchase

1 found this helpful

Report abuse

The following review is for SW-SAV38D4, which is a part of the bundle you are viewing.

By Ryan on April 22, 2025 Checkmark Icon

Verified purchase

Report abuse

Add-ons

NVX Sound Dampening Trunk Kit (SDTK20)

20 Square Feet of Sound Dampening Material (Five 18" x 32" Pieces)

(123)

$49.99

List price $71.99

NVX Sound Dampening Rubber Roller (SDRLR1)

Universal, Professional Heavy Duty Roller for Sound Damping/Dampening

(126)

$10.99

List price $13.99

Your Browsing History

BTD,CHR02U3 small

GROM Audio Chrysler, Dodge & Jeep Smartphone Music Streaming Kit (GROM-USB3-CHR02 BTD)

Control Your Streaming Music from an Android or iOS Smartphone on Select 2002-2007 Chrysler, Dodge & Jeep Factory Radios

(9)

$237.99

List price $234.98

13-24-NISSAN-ALTIMA-RSPKG small

NVX Rear N-Series Speaker Upgrade Kit for 2013-2024 Nissan Altima

Pair of 6.5" NVX N-Series Speaker Upgrade Kit with Metra Speaker Adapters and Harnesses | Fits select 2013-2024 Altima

(98)

$104.97

List price $150.97

YOUR GARAGE Save up to 10 different vehicles in your garage

Vehicle
Store Delete

2008 Mazda 3

2002 Toyota Sequoia

2009 Chevrolet Malibu

2020 Chevrolet Blazer

2002 Subaru Forester

2015 Honda Fit

2009 Honda Ridgeline

2004 Lexus IS300

2005 Ford Freestyle

2003 Mazda B2300

Vehicle
Store Delete

2003 Harley Davidson FLHTC/I Electra Glide Classic

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

Cancel

This page was not designed for products.

If you continue, you will be redirected to a category customized for your vehicle. Continue

Cancel

Shop your 2008 3

Change vehicle | Shop without vehicle

Account

Login/Register Your orders Start a return Get order support

Shopping help

Help desk Frequently asked questions Coupons and promo codes Find car audio that fits my car Speaker fit guide Payments accepted Return policy Shipping policy

Company

About and contact us Why shop here? Business hours Career opportunities

Everyday heroes

Military discount Responder discount Student discount Teacher discount

Brand stores

Shop by brand

Alpine Cerwin-Vega Infinity JBL JL Audio JVC Kenwood Kicker NVX Pioneer Rockford Fosgate Sony

Useful links

Financing & Leasing Affiliate program Learning center Product video Testimonials Site map Privacy policy Accessibility California Prop 65 **Acima Disclosures

© 2000-2025 Sonic Electronix
Headquarters: 1100 W Broadway, Louisville 40203 | Mailing: 724 S 11th St. Bay 4, Louisville, KY 40210 Prices, specifications, and images are subject to change without notice. Select products on sale or discounted, coupons, or other promotions and bundles may not be combined. Sonic Electronix is not responsible for typographical or illustrative errors. All trademarks and trade names are the property of their respective trademark holders. Terms Of Use