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Description

DS18 PRO-SDF6R

The 6.5” Round Bolt-On Horn Diffuser (PRO-SDF6R) is a high-quality audio accessory designed to improve sound dispersion and projection when used with compatible compression drivers or horn drivers. Engineered to evenly spread high-frequency sound, it enhances vocal clarity and directional control in car audio, PA systems, and professional sound setups. Its round bolt-on design allows secure and easy installation, while the durable construction ensures long-lasting performance under high sound pressure levels. Ideal for users seeking clearer highs and better sound coverage, the PRO-SDF6R horn diffuser helps maximize efficiency and audio performance in demanding environments.


Specifications

Specification Details
Nominal Speaker Diameter 6.5″ / 165 mm
Nominal Horn Size 8.6″ / 220 mm
Throat Diameter 4″ / 101 mm
Installation Type Bolt-On
Sound Coverage 90°
Body Material ABS
Color Black Matte
Sold As Single

Measurements
Measurement Dimensions
Overall Diameter 8.66″ / 220 mm
Overall Depth 5.2″ / 132 mm
Mounting Depth 4.8″ / 122 mm
Mounting Hole Diameter 6.8″ / 175 mm
Bolt Pattern (Horn) 8″ / 205 mm
Bolt Pattern (Speaker) 6.26″ / 159 mm

 


Product Overview

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.

Speaker not included

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Questions and Answers

Q1: What is the PRO-SDF6R used for?

A1: It is a 6.5-inch round bolt-on horn diffuser used to improve sound dispersion from compression or horn drivers.

Q2: Is the PRO-SDF6R a speaker?

A2: No, it is not a speaker; it is a horn diffuser designed to work with compatible drivers.

Q3: What type of installation does it support?

A3: It features a bolt-on mounting design for secure and stable installation.

Q4: What audio systems is it suitable for?

A4: It is suitable for car audio systems, PA setups, and professional sound applications.

Q5: What are the benefits of using this horn diffuser?

A5: It improves high-frequency projection, vocal clarity, and overall sound coverage.


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