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Overview

If you're running 6.5” midrange loudspeakers, DS18’s PRO-SDF6R is your secret weapon for sharper projection and cleaner vocals. This round bolt-on horn diffuser upgrades your front stage with a wide 90° dispersion, giving your mids the focus and range they’ve been missing.

DS18 PRO-SDF6R 6.5” Round Bolt-On Horn Diffuser

Model: PRO-SDF6R
Web Code: 20284538
Sold and shipped by | 4.3 seller rating (286 reviews)

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Warranty Information

Check with the manufacturer for details.

For Quebec residents: See the Availability Guarantee disclosure in the Specifications section below.

About: DS18 PRO-SDF6R 6.5” Round Bolt-On Horn Diffuser

If you're running 6.5” midrange loudspeakers, DS18’s PRO-SDF6R is your secret weapon for sharper projection and cleaner vocals. This round bolt-on horn diffuser upgrades your front stage with a wide 90° dispersion, giving your mids the focus and range they’ve been missing.

Built for the Culture

Made from tough ABS with a clean matte black finish, the PRO-SDF6R adds an aggressive look to your setup—perfect for show builds or open-air street systems where every decibel counts.

Drop-In, Bolt-On

Designed for easy bolt-on installation, the PRO-SDF6R fits any standard 6.5" midrange speaker with matching bolt patterns (6.26"/159mm speaker pattern, 8"/205mm horn flange). It’s a direct performance upgrade for DS18 PRO-X, PRO-GM, or any comparable 6.5” loudspeaker that needs better throw.

Key Features

Sharper Projection - Great for Line Array (LA) Speakers

Wide 90° Dispersion

Durable ABS Build

Bolt-On Design

Universal Fit

Specifications:

Nominal Speaker Diameter: 6.5" / 165mm

Nominal Horn Size: 8.6" / 220mm

Throat Diameter: 4" / 101mm

Installation Type: Bolt-On

Sound Coverage: 90°

Body Material: ABS

Color: Black Matte

Sold As: Single

Measurements:

Overall Diameter: 8.66" / 220mm

Overall Depth: 5.2" / 132mm

Mounting Depth: 4.8" / 122mm

Mounting Hole Diameter: 6.8" / 175mm

Bolt Pattern (Horn): 8" / 205mm

Bolt Pattern (Speaker): 6.26" / 159mm

For Quebec residents – Disclosure under the Consumer Protection Act

In compliance with Bill 29, Best Buy and third-party sellers on Best Buy Marketplace do not guarantee the availability of replacement parts, repair services, or maintenance information for any products. Coverage provided through any Best Buy Protection programs and applicable manufacturer warranties, if any, remain in place. Please contact the manufacturer directly for information about their availability guarantee.

Shipping Charges

Free standard shipping on all orders.

Processing Time

Most items ship within 2 business days after an order is placed*. Allow additional time for shipping to your address.
*Please note: If an item you ordered becomes unavailable, you'll be notified and a full refund will be processed within 2 business days.

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  • No restrictions in Canada
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See our return policy to find specific return information for this product and steps on how to return by mail.