Garage
Shop

See all parts that fit your 2003 Outback

Massive Audio SUMMO84XL

8" 300 Watts RMS Dual 4 Ohm Car Audio Subwoofer

Massive Audio
Shop all Massive Audio
highlight-star-icon

• Peak Power: 600W
• RMS Power: 300W
• Non-pressed Paper Cone
• EROM Foam Surround with Red Stitching

Learn more about the summo84xl

We apologize

This item has been discontinued


Loading...
Limited time!
46CSC654 main

Kicker CSC65 (46CSC654)

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

122
-33.36%

$79.96

List price $119.99

NSP65 main

NVX NSP65

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

93
-35.19%

$69.99

List price $107.99

UTE-73BT main

Alpine UTE-73BT

Single DIN Digital Media Receiver with Bluetooth (SiriusXM Ready)

43
-16.69%

$149.95

List price $180.00

VSP65KIT main

NVX VSP65KIT

750W Peak (250W RMS) 6.5" V-Series 2 Way Component Car Speakers

84
-15.39%

$109.99

List price $129.99

XED650C main

Cerwin-Vega XED650C

600W Peak (70W RMS) 6.5" XED Series 2-Way 4-ohm Component Speaker System

28
-16.67%

$64.99

List price $77.99

DEH-S4220BT main

Pioneer DEH-S4220BT

Single DIN CD Receiver with Bluetooth and Amazon Alexa

9
-11.77%

$149.99

List price $170.00

H7653 main

Cerwin-Vega H7653

680W Peak (120W RMS) 6.5" HED Series 3-Way Coaxial 4-ohm Speakers

43
-16.67%

$79.99

List price $95.99

DB6502 main

Polk Audio DB6502 (DB 6502)

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

8

$200.00

List price $209.99

PRO-ZT6 main

DS18 PRO-ZT6 (Sold Individually)

450W Peak (225W RMS) 6.5” PRO Series Hybrid Coaxial Midrange 4-ohm Motorcycle and Powersports Loudspeaker

6
DEH-S1200UB main

Pioneer DEH-S1200UB

Single DIN CD Receiver with Pioneer ARC App and USB Control for Android Phones

1
-8.34%

$109.99

List price $120.00

Description


Massive Audio brand icon

Authorized dealer

General Features:

  • 8" 300 Watts RMS Dual 4 Ohm Subwoofer
  • Power Handling:
    • Peak: 600 watts
    • RMS: 300 watts
  • Non-Pressed Paper cone
  • EROM Foam Surround with Red Stitching
  • 2" Dual 4 Ohm Voice coils
  • Top-mount depth: 4.84"
  • Resonance Frequency 60.868 Hz:
  • Die Cast Basket with Black Textured Finish
  • Fiberglass Woven Dust Cap
  • Customized Rubber Gasket and Magnet Boot
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty
  • Priced Individually

Product history:

Massive Audio SUMMO84XL thumbnail
(newest, current model)
Massive Audio SUMMO 84 thumbnail
(previous model, replaced by Massive Audio SUMMO84XL)

Subwoofer Wiring Guide


Wiring Guide to Wire 1 Massive Audio SUMMO84XL Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Massive Audio SUMMO84XL Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

Wiring Guide to Wire 3 Massive Audio SUMMO84XL Subwoofers

Mono Amp

4 Channel Amp

Wiring Guide to Wire 4 Massive Audio SUMMO84XL Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp


Loading...
Limited time!
46CSC654 main

Kicker CSC65 (46CSC654)

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

122
-33.36%

$79.96

List price $119.99

Limited time!
46CSC6934 main

Kicker CSC693 (46CSC6934)

900W Peak (300W RMS) 6x9” CS Series 3 Way Coaxial 4-ohm Speakers with Integrated Midrange Speakers

40
-30.02%

$111.96

List price $159.99

43DSC6504 main

Kicker DSC650 (43DSC6504)

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

28
-10.53%

$84.99

List price $94.99

DB652 main

Polk Audio DB652 (DB 652)

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

12
-9.16%

$109.00

List price $119.99

Limited time!
Club 622 main

JBL Club 622

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

5
-28.58%

$99.95

List price $139.95

CV15BT main

Cerwin-Vega CV15BT

Single Din Digital Media Receiver with Bluetooth

3
MPK 163.3 main

Hertz MPK163.3

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

2
-14.89%

$999.99

List price $1175.00

PNW-65CS2 main

AudioControl PNW-65CS2

250W Peak (200W RMS) 6.5″ PNW Series 2 Way Component 3-ohm Speakers

4
-5.90%

$319.00

List price $339.00

SXE-6926S main

Alpine SXE-6926S

280W Peak (90W RMS) 6x9” SXE Series 2-way 4-ohm Coaxial Speakers

13
-20.84%

$56.99

List price $71.99

NSP65 main

NVX NSP65

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

93
-35.19%

$69.99

List price $107.99


Best selling similar products

VCW82v3 small

NVX VCW82 Version 3 (VCW82v3)

• Peak Power: 1300 watts
• RMS Power: 650 watts
• Impedance: Dual 2 ohm
• Carbon Fiber Enhanced Non-Pressed Paper Cone
• High Roll Foam Surround with black nylon stitching
• Mount depth: 5.31"
• Sensitivity: 83 dB (1W/1m)

(12)

$169.99

List price $203.99

47KBRW8 small

Kicker 47KBRW8 ReFLEX™

• 8" ReFLEX™ Passive Radiator
• Rubber covered plastic Cone
• Rubber Surround

(1)

$49.99

List price $59.99

DB-SA2508 D1 small

Deaf Bonce Apocalypse DB-SA2508 D1

• Peak Power: 1600 watts
• RMS Power: 800 watts
• Pressed Paper Cone
• Foam Surround
• Impedance: Dual 1 ohm
• Mount depth: 5.22"
• Sensitivity: 84.7 dB

(1)

$229.90

List price $229.90

VCW84v3 small

NVX VCW84 Version 3 (VCW84v3)

• Peak Power: 1300 watts
• RMS Power: 650 watts
• Impedance: Dual 4 ohm
• Carbon Fiber Enhanced Non-Pressed Paper Cone
• Custom High Roll Foam Surround with black nylon stitching
• Mount depth: 5.31"
• Sensitivity: 83 dB (1W/1m)

(15)

$169.99

List price $203.99

8W3V3-4 small

JL Audio 8W3V3-4

• RMS Power: 250 watts
• Impedance: Single 4 ohm
• Mineral-Filled Polypropylene Cone
• Nitrile Butadiene Rubber NBR Surround
• Mount depth: 4.63"
• Sensitivity: 83.24 dB

(45)

$349.99

List price $349.99

L7S82 small

Kicker L7S82 (44L7S82)

• Peak Power: 900 watts
• RMS Power: 450 watts
• Impedance: Dual 2 ohm
• Injection Molded Polypropylene Cone
• Ribbed Santoprene Surround
• Mount depth: 4-3/4"
• Sensitivity: 82.37 dB

(1)

$175.96

List price $239.99

SPK-8S4 small

AudioControl SPK-8S4

• RMS Power: 500 watts
• Impedance: Single 4 ohm
• Paper Fiber with Mica Coating Cone
• Rubber Surround
• Mount depth: 4.291"
• Sensitivity: 81.9876 dB

(1)

$179.00

List price $229.00

KAPPA 83WDSSI small

Infinity Kappa 83WDSSI (INFSUBKA83WDSSIAM)

• Peak Power: 1200 watts
• RMS Power: 400 watts
• Impedance: Single 2 or 4 ohm
• Glass Fiber Cone
• Rubber Surround
• Mount depth: 5.42"
• Sensitivity: 91 dB

(2)

$149.95

List price $289.95

8W1v3-4 small

JL Audio 8W1v3-4


• RMS Power: 150 watts
• Impedance: Single 4 ohm
• Mica Injected Polypropylene - MIPP Cone
• Nitrile Butadiene Rubber NBR Surround
• Mount depth: 3.86"
• Sensitivity: 84.8 dB

(10)

$199.99

List price $199.99

CWRT84 small

Kicker CWRT84 (48CWRT84)

• Peak Power: 600 watts
• RMS Power: 300 watts
• Impedance: Dual 4 ohm
• UV-Treated Polypropylene Cone
• UV-resistant Santoprene Surround
• Mount depth: 2-11/16"
• Sensitivity: 81.8 dB

(4)

$151.96

List price $209.99

Specifications & Details


Subwoofer Specifications
Series
Summo Series
Subwoofer Size
8"
Peak Power Handling
600 watts
RMS Power Handling
300 watts
Voice Coil(s)
Dual
Impedance (Per Voice Coil)
4 ohm
Voice Coil Diameter
2"
Xmax (millimeters)
10 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Woofer Composition
Non-Pressed Paper
Woofer Surround
EROM Foam
Magnet Structure
Double Stacked
Subwoofer Grille
Yes - Included
Recommended Enclosure Specifications
Recommended Enclosure Type
Ported / Vented
Sealed
Optimum Sealed Box Volume
0.75 cubic feet
Optimum Ported Box Volume
1.469 cubic feet
T/S Parameters (Electromechanical)
Free-Air Resonance (Fs)
60.868 Hz
Equivalent Compliance (Vas)
3.734 liters
Total Speaker Q Value (Qts)
1.269
Electrical Q Value (Qes)
1.493
Electrical Resistance of Voice Coil (Re)
3.2 ohm
Mechanical Q Value (Qms)
8.464
What is in the box?
Paperwork
User manual
WITB: Subwoofers
Subwoofer
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

SUMMO84XL

Weight:

13.65lbs

Internal SKU:

summo84xl

Internal Product ID:

180799

Customer Ratings & Reviews


Massive Audio SUMMO84XL thumbnail image

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



Durability
0
Value
0
Features
0
Design
0
Usability
0

Customer Reviews

Sort by:

Loading...
Sorry, no reviews found


VG03GGM small

Victor Fitness VG03GGM

Dark Gray/Gray Size Medium - Fingerless, Artificial leather, Workout gloves

$14.99

List price $29.99

11-19-FORD-EXPLORER-KSPKG small

Kicker CS Series Factory Speaker Upgrade Package

Fits select 2011-2019 Explorer

(218)

$231.49

List price $373.94

RAP-SB-407-UN10U small

RAM Mount Seat Tough-Wedge Mount (RAP-SB-407-UN10U)

Tough-Wedge, snap-link mount and Universal X-Grip cradle for Large phones or Phablets

$69.99

List price $78.49

No picture

JBL Stage 1200S (JBLSUBST1200SAM) (Open Box, Great)

1000W Peak (250W RMS) Loaded Single 12" Sealed Shallow Enclosure

(1)

$174.97

List price $229.95

AVH-P3100DVD small

Pioneer AVH-P3100DVD

Double DIN 5.8" Touchscreen TFT-LCD Monitor with DVD/CD/MP3 Player, Front USB and Aux Inputs

(40)

$279.99

List price $439.99

TS-W126M small

Pioneer TS-W126M

1300W Peak (300W RMS) 12" Single 4-Ohm Car Subwoofer

(13)

$49.95

List price $100.00

RS-351-EDP small

Excalibur RS-351-EDP

4-Button Keyless Entry and Remote Start Car System Compatible with Manual Transmissions

$59.99

List price $119.99

VW2317B small

Scosche VW2317B / VW2317

Double DIN or Single DIN with Pocket Installation Kit for select 2005-2019 vehicles from Volkswagen Vehicles

(4)

$15.99

List price $23.95

AX-HYKIA2-SWC small

Axxess AX-HYKIA2-SWC Wiring Interface

Install a new car stereo and retains steering wheel audio controls in select 2012-2022 Veloster and Veloster N

$119.99

List price $195.30

Related Searches


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

2012 Dodge Challenger

2016 Mazda 6

2003 Ford Excursion

2004 Honda Pilot

2005 Nissan Altima

2009 Ford Focus

2002 Mitsubishi Eclipse

2003 MINI Cooper

2002 Subaru Outback

2019 Mazda CX-3

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.