Garage
Shop

See all parts that fit your 2008 Cayenne

Hifonics XX-3215

15" Goliath Subwoofer

Hifonics
Shop all Hifonics
Product videos
highlight-star-icon

15" Competition Goliath SPL Subwoofer • 3200W RMS • 6400W Peak • 2 ohm Dual Voice Coil • Triple Stacked 300 oz. motor structure with chrome vented wrap • Chrome aluminum die cast basket • Woven carbon fiber and silver thread glass fiber cone • foam surround

Learn more about the xx3215

We apologize

This item has been discontinued


Loading...
DMH-1800NEX main

Pioneer DMH-1800NEX

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

2
-16.67%

$349.99

List price $420.00

DMH-W4660NEX main

Pioneer DMH-W4660NEX

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

2
-20.00%

$599.99

List price $750.00

CV15BT main

Cerwin-Vega CV15BT

Single Din Digital Media Receiver with Bluetooth

3
UTE-73BT main

Alpine UTE-73BT

Single DIN Digital Media Receiver with Bluetooth (SiriusXM Ready)

44
-16.69%

$149.95

List price $180.00

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)

1
-24.20%

$469.99

List price $620.00

KW-M560BT main

JVC KW-M560BT

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

10
Limited time!
DMX709S main

Kenwood eXcelon DMX709S

6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto (Sirius XM Ready)

20
-33.50%

$399.00

List price $600.00

Limited time!
XAV-AX8500 main

Sony XAV-AX8500

10.1" Single DIN Floating Touchscreen Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay, and Wired Android Auto (SiriusXM Ready)

2
-20.20%

$798.00

List price $999.99

Kenwood eXcelon KMM-X705

Single DIN Digital Media Receiver with Bluetooth, Built-in Alexa (Sirius XM Ready)

6
-20.40%

$199.00

List price $250.00

KDC-X305 main

Kenwood eXcelon KDC-X305

Single DIN CD Receiver with Bluetooth and Built-in Alexa (Sirius XM Ready)

23
-17.08%

$199.00

List price $240.00

Product Highlights


15" Competition Goliath SPL Subwoofer • 3200W RMS • 6400W Peak • 2 ohm Dual Voice Coil • Triple Stacked 300 oz. motor structure with chrome vented wrap • Chrome aluminum die cast basket • Woven carbon fiber and silver thread glass fiber cone • foam surround

Description


Hifonics brand icon

Authorized dealer

  • 15" Competition Goliath SPL Subwoofer
  • Power Handling:
    • RMS: 3200 watts
    • Peak: 6400 watts
  • 4" CCAW voice coil with bi-flair winding
  • Black Aluminum voice coil
  • 2 Ohm Impedance
  • Dual voice coil configuration
  • Dual nickel plated push terminals
  • Chrome aluminum die cast basket
  • Triple Stacked 300 oz. motor structure with chrome vented wrap
  • Woven carbon fiber and silver thread glass fiber cone
  • 1.5" large polyester foam edge
  • Dual layer conex spider with woven tinsel leads
  • Embossed black anodized aluminum dust cap with silk screen
  • Large bumped T-Yoke chromed back plate
  • 1-year SonicElectronix.com warranty

Subwoofer Wiring Guide


Wiring Guide to Wire 1 Hifonics XX-3215 Subwoofer

Mono Amp

Mono Amp - Option 1

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Hifonics XX-3215 Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

Wiring Guide to Wire 3 Hifonics XX-3215 Subwoofers

Mono Amp

Mono Amp - Option 1

4 Channel Amp

Wiring Guide to Wire 4 Hifonics XX-3215 Subwoofers

2 Channel Amp

4 Channel Amp


Best selling similar products

DB-SA305 D1 small

Deaf Bonce Apocalypse DB-SA305 D1

• Peak Power: 4000 watts
• RMS Power: 2000 watts
• Pressed Paper Cone
• Foam Surround
• Impedance: Dual 1 ohm
• Mount depth: 7.85"
• Sensitivity: 88.30 dB

(1)

$399.90

List price $399.90

DB-SA255 D2 small

Deaf Bonce Apocalypse DB-SA255 D2

• Peak Power: 2000 watts
• RMS Power: 1000 watts
• Pressed Paper Cone
• Foam Surround
• Impedance: Dual 2 ohm
• Mount depth: 7.4"
• Sensitivity: 87.50 dB

(1)

$259.90

List price $259.90

VCW152v3 small

NVX VCW152 Version 3 (VCW152v3)

• Peak Power: 3000 watts
• RMS Power: 1500 watts
• Impedance: Dual 2 ohm
• Carbon Fiber Enhanced Non-Pressed Paper Cone
• Custom High Roll Foam Surround with black nylon stitching
• Mount depth: 8.19"
• Sensitivity: 88 dB (1W/1m)

(39)

$259.99

List price $311.99

Specifications & Details


Subwoofer Specifications
Subwoofer Size
15"
Peak Power Handling
6400 watts
RMS Power Handling
3200 watts
Voice Coil(s)
Dual
Impedance (Per Voice Coil)
2 ohm
Sensitivity
100.5 dB
Xmax (millimeters)
25 mm
Woofer Composition
Carbon & Glass Fiber
Woofer Surround
Foam

Item Details


Manufacturer:

Model Number:

XX-3215

Weight:

68.00lbs

Internal SKU:

xx3215

Internal Product ID:

7809

Product and How-to Videos


Customer Ratings & Reviews


Hifonics XX-3215 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


MPC-P300-MIDI-40 small

Monster Cable MPC P300 MIDI-40

40 Amp Monster 300 Power Series MIDI Fuses (4-pack)

$6.00

List price $14.99

MPC-P300-MIDI-50 small

Monster Cable MPC P300 MIDI-50

50 Amp Monster 300 Power Series MIDI Fuses (4-pack)

$6.00

List price $14.99

MPC-P400-ANL-200 small

Monster Cable MPC P400 ANL-200

200 Amp Monster 400 Power Series ANL Fuse

(1)

$6.99

List price $15.99

MPC-P200-AGU-30 small

Monster Cable MPC P200 AGU-30

30 Amp Monster 200 Power Series AGU Fuse (4-pack)

$5.00

List price $9.99

MPC-P200-AGU-50 small

Monster Cable MPC P200 AGU-50

50 Amp Monster 200 Power Series AGU Fuse (4-pack)

(1)

$4.99

List price $9.99

MOFO-122X small

Power Acoustik MOFO-122X

2700W Peak (1500W RMS) 12" MOFO-X Series Dual 2-ohm Car Subwoofer

(134)

$109.99

List price $249.99

UP8i_SSDK small

DLS Ultimate UP8i + Sound Dampening

8" 2-way Component System (Ultimate UP 8i) 12 sq. ft. (12" x 36") of Sound Dampening Material

$538.62

List price $719.98

MPC-P400-ANL-300 small

Monster Cable MPC P400 ANL-300

300 Amp Monster 400 Power Series ANL Fuse

(1)

$8.99

List price $15.99

No picture

NVX VADM4 Version 2 (VADM4v2) (Open Box, Great)

500W RMS V-Series Micro Full-Range Class D 4-Channel Amplifier Car/Marine/Powersports Amplifier

(1)

$136.49

List price $237.99

Related Searches


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

1997 GMC K1500

1996 Jeep Cherokee

2004 Maserati Spyder

2008 Porsche Cayenne

2014 Dodge Charger

2020 Dodge Challenger

2017 Dodge Ram ProMaster City

2006 Toyota Highlander

1997 Toyota Corolla

1991 Saab 900

Vehicle
Store
Delete

2016 Harley Davidson FLS Softail Slim

1998 Harley Davidson FXD Dyna Super Glide

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.