Garage
Shop

See all parts that fit your 1997 528i

DS18 PRO-SDF6

6.5" Square Bolt-on Midrange Speaker Diffuser Horn

DS18
Shop all DS18
highlight-star-icon

• 6.5" loudspeaker horn diffuser
• Comes with 4-M4 Nut-Inserts
• Bolt-on installation type
• 90° rounded sound coverage
• Made with durable ABS plastic

See compatible vehicles Learn more about the prosdf6
No Fit Icon

Doesn't fit your 1997 528i

Similar items | Update vehicle | Vehicle store
List price $53.99
Thanks , You Pay:
-17%

$44.95

 with warranty
4 payments of $12

Heads up

Your vehicle can use this product in multiple locations. Only a quantity of one can be selected from the product page. You will have the option to adjust the quantity within your cart.

shipping truck icon Free shipping in USA. Provide zip for delivery date.
Quantity
Available: Ships in 10-14 days
Brand new

Acima Logo

No Credit Option

Flexible Lease Payments

Early Purchase Options

Quick Approval Decision

Extend logo

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

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

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

Award winning icon
Award-Winning Service
Shipping icon
FREE Shipping Orders $49+
60 days return policy icon
60-Day Easy Returns
lowest price guarantee icon
Guaranteed Lowest Price
inHouseExpert
In-House Experts
NVX - Worth the Envy - Direct to Consumer Car Audio

Loading...
Limited time!
DMH-241EX main

Pioneer DMH-241EX

6.2" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth and Built-in Alexa

22
-35.00%

$194.99

List price $300.00

FRING525 main

NVX FRING525

Universal 5.25" Self-Adhesive Foam Speaker Baffle Ring Kit (Pack of 2)

2
-45.02%

$10.99

List price $19.99

VSP525KIT main

NVX VSP525KIT

750W Peak (250W RMS) 5.25" V-Series 2 Way Component Car Speakers

27
-16.67%

$99.99

List price $119.99

Description


DS18 brand icon

Authorized dealer


DS18 PRO-SDF6

With DS18’s PRO-SDF6, you can unleash focused beams of audio energy towards the crowd at your next local car meet. Designed for competition, the PRO-SDF6 is engineered to project audio for miles without compromising sound quality. Precision engineering is at the forefront of the PRO-SDF6’s design. The 161mm Speaker Bolt guarantees a secure fit onto your 6.5” Mid-Range Loudspeaker even when you turn the bass up a notch. The 6mm thickness of the diffuser guarantees durability and extended longevity, ensuring that your investment in your audio doesn’t go to waste.


Product Features:

  • 6.5" loudspeaker horn diffuser
  • Projects audio without compromising quality
  • Guarantees secure fit of 6.5" midrange speaker
  • Comes with 4-M4 Nut-Inserts
  • Easy to install speaker diffuser
  • Nominal Speaker Diameter (Not included): 6.5"
  • Nominal Horn Size: 9"
  • Throat Diameter: 4x4"
  • Installation Type: Bolt-On
  • Sound Coverage: 90°
  • Body Material: durable ABS plastic
  • Mounting Depth: 4"
  • Color: painted in black matte
  • Authorized Internet Dealer
  • 2 Year Manufacturer's Warranty

Compatible Vehicles


Please use our Fitment Guide to determine specific compatibility for the submodel and audio features

The vehicle you have selected 1997 BMW 528i is not compatible. Change vehicle or See list of compatible similar products


Loading...
DMH-1800NEX main

Pioneer DMH-1800NEX

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

59
-19.05%

$339.99

List price $420.00

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

Club 522F main

JBL Club 522F (SPKCB522FAM)

270W Peak (90W RMS) 5.25" Club Series 2 Way Coaxial 3-ohm Speakers

1
-42.29%

$74.99

List price $129.95

Reference 5030cx main

Infinity Reference 5030cx (REF5030CX)

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

2
-60.01%

$99.95

List price $249.95

Limited time!
DMX709S main

Kenwood eXcelon DMX709S

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

39
-33.50%

$399.00

List price $600.00

Limited time!
iLX-W670-M main

Alpine iLX-W670-M

6.75" Double DIN Touchscreen Digital Multimedia Receiver with iDataLink Maestro Support, Bluetooth, Apple CarPlay and Android Auto (SiriusXM Ready)

126
-30.01%

$349.95

List price $500.00

Limited time!
DMH-241EX main

Pioneer DMH-241EX

6.2" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth and Built-in Alexa

22
-35.00%

$194.99

List price $300.00

Limited time!
XAV-AX3200 main

Sony XAV-AX3200

6.95" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, WebLink, Apple CarPlay, and Android Auto (SiriusXM Ready)

15
-25.50%

$298.00

List price $399.99

Limited time!
DMX809S main

Kenwood eXcelon DMX809S

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

11
-37.63%

$499.00

List price $800.00

XAV-AX3200, BLPCAM2 main

Sony XAV-AX3200 with License Plate Camera

6.95" Double-DIN Touchscreen Digital Multimedia Receiver with License Plate Backup Camera

72
-32.40%

$337.99

List price $499.98


Best selling similar products

XBAF65 small

NVX XBAF65

• 6.5" Self-Adhesive Foam Speaker Baffle Ring Kit
• Waterproof foldable silicone baffles with egg crate foam
• Foldable rings allow for perfect fitment at varying depths
• Designed for use with 6.5" speakers
• Pack of 2

(117)

$21.99

List price $34.99

XBAF69 small

NVX XBAF69

• 6x9" Self-Adhesive Foam Speaker Baffle Ring Kit
• Waterproof foldable silicone baffles with egg crate foam
• Foldable rings allow for perfect fitment at varying depths
• Designed for use with 6x9" speakers
• Pack of 2

(49)

$22.99

List price $39.99

FRING65 small

NVX FRING65

• 6.5" or 6.75" Self-Adhesive Foam Speaker Baffle Ring Kit
• Waterproof automotive-grade high-density foam strips
• Prevents front and rear wave cancellation and panel vibrations
• Designed for use with 6.5" or 6.75" speakers
• Pack of 2

(44)

$17.99

List price $19.99

XBAF65X2_SDBSK2X2_BTK_SDRLR small

NVX XBAF65 6.5" Premium Speaker Installation 2-Pair Kit

• Acoustically seals speakers for better sound performance
• Prevents front and rear wave cancellation
• Reduces panels vibrations
• Foldable design allows for varying depths

(257)

$88.14

List price $141.44

VXT80 small

Install Bay 8" Round Foam Acoustic Speaker Baffles (VXT80)

• Shallow Foam Acoustic Speaker Baffles
• Includes a pair of 8" round baffles
• Made from a waterproof foam
• Creates a tight, acoustic seal behind the speaker to enhance the sound quality
• Compresses and forms to the shape of most installations
• Reduces panel vibration
• Greatly enhances the sound and performance of the speakers

(2)

$33.99

List price $37.99

FRING68 small

NVX FRING68

• 6x8" or 5x7" Self-Adhesive Foam Speaker Baffle Ring Kit
• Waterproof automotive-grade high-density foam strips
• Prevents front and rear wave cancellation and panel vibrations
• Designed for use with 6x8" or 5x7" speakers
• Pack of 2

(12)

$15.99

List price $29.99

81-4300 small

Metra 81-4300

• Universal Speaker Baffles
• Works for 5-1/4" & 6-1/2" Speakers
• Durable ABS Plastic Construction
• Protects the Back of the Speaker
• Reduces Panel Vibration
• Blocks Road Noise
• Creates a Tight Acoustic Seal

(25)

$21.99

List price $24.99

RKFR6 small

Stinger Roadkill RKFR6

• F.A.S.T. Ring Kit for 6" and 6.5" Speakers
• Includes 3 piece foam speaker rings
• Acoustically seals speakers for better sound performance
• Absorbs rear wave, prevents front and rear wave cancellation and reduces panels vibrations

(29)

$20.99

List price $29.00

XBAF68 small

NVX XBAF68

• 6x8" Self-Adhesive Foam Speaker Baffle Ring Kit
• Waterproof foldable silicone baffles with egg crate foam
• Foldable rings allow for perfect fitment at varying depths
• Designed for use with 6x8" speakers
• Pack of 2

(12)

$21.99

List price $29.99

Specifications & Details


Baffle Specifications
Baffle Material
ABS Plastic
Baffle Finish
Painted
Compatible Speaker Size
6-1/2"
Baffle Thickness
1/4""
Warranty and Return Policy
Parts Warranty Duration
2 years
Labor Warranty Duration
2 years
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

PRO-SDF6

Weight:

2.00lbs

Internal SKU:

prosdf6

Internal Product ID:

216098

Customer Ratings & Reviews


DS18 PRO-SDF6 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

PD9016P/37 small

Philips PD9016P (PD9016P/37)

Dual 9" LCD Portable DVD Players with Stereo Speakers and Car Charger/Headrest Installation Kit

$199.99

List price $219.99

BX1505D small

Hifonics BX1505D

Class D MonoBlock Amplifier -- Classic Brutus version of TX1505D

(1)

$239.99

List price $399.99

SCP14250BL small

StreetWires SCP14250BL

250' Roll of 14 AWG Blue Speaker Cable

$119.99

List price $249.99

RPX69 small

SKAR Audio RPX69-OPEN BOX

6x9" 3-Way RPX Series Coaxial Speakers

$69.99

List price $129.99

ACS2050P small

Audiobahn ACS2050P 5-1/4"

$54.99

List price $129.99

MA112XQ small

MA Audio MA112XQ

12" Dual 4 ohm XQ Series Subwoofer

(18)

$59.99

List price $109.99

TS-A6881R small

Pioneer TS-A6881R

6" x 8" 4-way Car Speakers

(5)

$69.99

List price $99.99

HA-S650 small

JVC HA-S650 - HAS650

"Black Series" Slim Carbon Lightweight Collapsible Construction with 36mm (1/8") Driver and Gold-Plated Stereo Jack

(1)

$26.99

List price $52.99

DLPKGM small

XpressKit DLPKGM

Xpress Kit GM Doorlock & Passkey Interface Compatible with Select 1998-2008 GM Vehicles

(1)

$44.99

List price $99.99

Related Searches


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

1997 BMW 528i

2011 Audi A6

2000 Dodge Caravan

2003 Audi A4

2017 Ram 3500

2006 Dodge Sprinter

1986 Ford Thunderbird

2016 Jeep Compass

2011 Ford Fusion

2006 Toyota 4Runner

Vehicle
Store
Delete

2000 Harley Davidson FXST Softail Standard

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.