Garage
Shop

Polk Audio DXI521 with 6.5" / 7" Mounting Adapters

5-1/4" DXi Series 2-way Car Speakers, Marine Certified, w/ 6.5" / 7" Mounting Adapters

highlight-star-icon

• 135 Watts Max Each, 45 Watts RMS Each
• 3/4" (19mm) aluminum dome tweeter
• Dynamic Balance polypropylene cone
• 4 Ohm Impedance
• Sensitivity: 93dB
• Mounting Depth: 2 5/16"

Learn more about the dxi521_sac656

We apologize

This item has been discontinued

Description


Polk Audio brand icon

Authorized dealer

Polk Audio DXi521 (DXi 521) db521 inspired Car/Marine/ATV Speakers

5-1/4" DXi Series 2-way Car Speakers, Marine Certified for Boats/ATV/Motorcycles - Same Performance as DB521
Quantity: 1

General Features:

  • 5-1/4" DXi Series 2-way Coaxial Car Speakers
  • Power Handling:
    • Peak: 270 watts per pair / 135 watts each
    • RMS: 90 watts per pair / 45 watts each
  • Recommended Power Range: 2 - 45 watts RMS per channel
  • Dynamic Balance polypropylene cone
  • Butyl Rubber surround
  • 3/4" (19mm) aluminum dome tweeter
  • Top-mount Depth: 2 5/16"
  • Cutout Dimensions: 4 3/4"
  • 4 ohm impedance
  • Frequency Response: 60Hz-22kHz
  • Sensitivity: 93dB
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty
  • Priced Per Pair

Check out the DXi521 Owner's Manual



Scosche SAC656

Add 5-1/4" or 6-1/2" Speakers to Factory 7" Mounting Locations
Quantity: 1

General Features

  • The SA656 speaker adapters allow for most aftermarket 5 1/4" and 6 1/2" speakers to fit a 7" factory opening.
  • 5" Cutout Diameter. If your speakers require a larger cutout diameter for mounting, you will be required to remove the pre-scored tabs on the inside of the SA656.
  • Authorized Internet Dealer

Priced Per Pair


Important Note: Brackets are intended for custom installs and may require some modifications to fit a given speaker and/or location. For example, Most 6.5" will fit, but given the narrow opening to accommodate a 5.25" speaker, the bracket may require said modification. Please plan accordingly and/or consult with your installer.


Best selling similar products

Club 522F small

JBL Club 522F (SPKCB522FAM)

• 135 watts Peak Each, 45 watts RMS Each
• Silk Edge Driven Dome tweeters
• UV-Resistant Polypropylene cone material
• Plus One woofer architecture
• Impedance: 3 ohm
• Sensitivity: 91 dB

$74.99

List price $129.95

46CSC54 small

Kicker CSC5 (46CSC54)

• 225 watts Peak Each, 75 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome tweeters with neodymium magnets
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

(5)

$79.96

List price $119.99

DB522 small

Polk Audio DB522 (DB 522)

• 300 watts Peak Each, 100 watts RMS Each
• 3/4" Silk Dome tweeters
• UV-tolerant Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

(13)

$100.00

List price $109.99

43DSC504 small

Kicker DSC50 (43DSC504)

• 200 watts Peak Each, 50 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

(17)

$74.99

List price $84.99

VSP525 small

NVX VSP525

• 240 watts Peak Each, 80 watts RMS Each
• 1" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB
• Mounting Depth: 2.16"

(23)

$79.99

List price $95.99

P152 small

Rockford Fosgate Punch P1 P152

• 80 watts Peak Each, 40 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

(27)

$109.99

List price $109.99

TS-G1320S small

Pioneer TS-G1320S

• 250 watts Peak Each, 35 watts RMS Each
• 1-3/16" Polyethylene Terephthalate (PET) Balanced Dome tweeters
• Mica Injected Polypropylene - MIPP cone material with Progressive Flex Suspension System (PFSS) spider
• Impedance: 4 ohm
• Sensitivity: 87 dB

(7)

$44.99

List price $65.00

S-E5.25CX small

Sundown Audio E-5.25CX

• 50 watts RMS Each
• Titanium Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm

$99.99

List price $119.99

CS-DR521 small

JVC CS-DR521

• 260 watts Peak Each, 40 watts RMS Each
• 1" Polyetherimide Balanced Dome tweeters
• Carbon Mica cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

$99.00

List price $119.00

T152 small

Rockford Fosgate Power T1 T152

• 120 watts Peak Each, 60 watts RMS Each
• 1" Aluminum Dome offset cantilever coaxial mounted tweeters
• Polypropylene-Carbon Fiber Hybrid cone material
• Impedance: 4 ohm
• Sensitivity: 86.5 dB

(22)

$219.99

List price $219.99

Specifications & Details


Speaker Specifications
Series
Polk DXi Series
Priced Per
Pair
Speaker Size
5-1/4"
Design
2-way Coaxial
Tweeter Design
Dome
Tweeter Size
3/4"
Tweeter Composition
Aluminum
Woofer Composition
Dynamic Balanced polypropylene
Woofer Surround
Butyl Rubber
Peak Power Handling
135 watts
RMS Power Handling
45 watts
Sensitivity
93 dB
Frequency Response
60 - 22000 Hz
Impedance (Per Voice Coil)
4 ohm
Top-Mount Depth (Mounting Depth)
2 5/16"
Cutout Dimensions
4 3/4"
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

DXI521_SAC656

Weight:

5.18lbs

Internal SKU:

dxi521_sac656

Internal Product ID:

133937

Customer Ratings & Reviews


Polk Audio DXI521 with 6.5

5 star
66%
4 star
13%
3 star
13%
2 star
3%
1 star
5%



Durability
4.1
Value
4.4
Features
4.2
Design
4.2
Usability
4.3

Customer Reviews

Sort by:

Loading...

Good

The following review is for SAC656, which is a part of the bundle you are viewing.

Just as described and a good product

By Daniel on November 27, 2011

73 found this helpful


it adapts

The following review is for SAC656, which is a part of the bundle you are viewing.

what else can be said about the rings? They do what they are supposed to.

By tom on April 21, 2011

71 found this helpful


JBL 6427 GTO 4x6 Coaxials

The following review is for SAC656, which is a part of the bundle you are viewing.

Just installed these in my 1994 Olds Silhouette van and what a difference, had to adjust the fade more toward the rear speakers, will also be upgrading the rear speakers and adding a JBL 4 channel amp.

By Daniel on October 3, 2007

69 found this helpful


Thank you Scosche

The following review is for SAC656, which is a part of the bundle you are viewing.

I bought these to install my speakers and ended up not using them. The product seemed flimsy and not as well put together as their other products.

By JASON on February 24, 2013

67 found this helpful


I wish I'd bought speakers that didn't require these

The following review is for SAC656, which is a part of the bundle you are viewing.

If you can, spend a little more money and get speakers designed to fit your vehicle so you don't have to mess with these things. They're made of cheap, brittle plastic, and they somehow manage to not quite line up with any of the mounting holes for the speakers. I could've gotten better speakers with built-in mounting tabs for my car for less money than I spent on speakers and these mounting brackets. They ended up being way more hassle than they're worth.

By Jonathon on July 10, 2008

67 found this helpful


Functional , had to modify.

The following review is for SAC656, which is a part of the bundle you are viewing.

I was told they would fit,but they didn't . I had to modify them and use a couple long screws with stacks of washers. I made them work. Wife's happy!

By Logan on January 27, 2014

67 found this helpful


Perfect fit

The following review is for SAC656, which is a part of the bundle you are viewing.

These adapters are great for fitting your speakers. You can't go wrong with these

By Chryston on September 19, 2012

63 found this helpful


very helpful toward installation

The following review is for SAC656, which is a part of the bundle you are viewing.

Used these plates to mount my speakers after all the OEM pieces were hacked up or missing,Made my install 100 times easier.

By Pat on February 22, 2015

61 found this helpful


Great Value

The following review is for SAC656, which is a part of the bundle you are viewing.

Great sound. Really good quality and value. Do 't believe sound, unbelevable.

By Bobby on May 10, 2014

63 found this helpful


They work great

The following review is for SAC656, which is a part of the bundle you are viewing.

I have this in my front doors in the subie and have no problems with them..

By Matty on January 23, 2013

60 found this helpful




Synchros S300I Black/Blue small

JBL Synchros S300i - Black/Blue

Premium On-Ear PureBass Headphones Stereo Headset with Detachable Apple iOS 3-Button Mic/Remote Cord

$79.00

List price $199.95

Related Searches


Save up to 10 different vehicles in your garage

Add vehicle
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.