2-way coaxial in-ceiling loudspeaker.

7 1/2" Diameter 6 1/2" Cut-Out 2 9/16" Mounting Depth
19.05cm Diameter 16.51cm Cut-Out 6.51cm Mounting Depth



Available Finishes:
Additional Images

Coaxial Design = Compact Performance

Coaxial speakers are speakers that include a woofer with a tweeter suspended over the woofer. All the better for squeezing more high performance out of a compact design. Coaxial speakers are most commonly seen in car audio systems, but we thought it would be fun to bring that same kind of flexibility and extreme durability to our SC Series of built-in loudspeakers.

SC50 Features:

One-cut easy installation in existing walls or in new construction, with no extra assembly and no additional cutting. (Pre-construction brackets are available separately.)

Polk’s exclusive Rotating Cam system ensures stable, secure, vibration-free placement with the turn of a screwdriver.

Polk’s proprietary, patented Dynamic Balance® technology allows our engineers to design out distortion-causing driver and system resonances, so you only hear the good sounds.

Dynamic Balance silk dome tweeters, in aimable swivel housings, deliver clear and detailed highs, without fatigue, for greater accuracy and more realistic imaging.

Paintable grilles & flanges make SC Series speakers virtually invisible.

SC Series built-in speakers share cutout sizes and hardware components with other Polk  built-in speaker series, so you can more easily upgrade your built-in speakers at any time.

Durable, moisture-resistant materials like stainless steel hardware and a powder-coated, rust-proof aluminum grille allow you to install SC Series built-in speakers in extreme install locations like kitchens, bathrooms, and transitional areas like sunrooms and covered porches.

The SC Series is timbre-matched to all other Polk loudspeakers, for mix-and-match system-building and seamless, speaker-to-speaker perfection.

The SC Series features three of the most advanced built-in loudspeakers you’ll find: A single compact built-in loudspeaker that brings actual dynamic stereo sound to locations where two speakers just won’t work; two high performance IP-ready loudspeakers, allowing whole-home audio networking on a budget for the very first time, and a high performance built-in center channel speaker!

All Polk products are made using the best materials and the most advanced manufacturing techniques. They pass the industry’s most exhaustive quality tests, including drop testing, extreme signal response and UV & salt exposure testing. Polk loudspeakers are built to perform for a lifetime.

Driver Complement

Diameter3/4" (1.91cm) 
TypeSilk/polymer dome  
Mid / Woofer
Diameter5 1/4" (13.34cm) 
TypeDynamic Balance driver with polymer composite cone  


Total Frequency Response50Hz - 20kHz 
Upper -3dB Limit20 kHz
Lower -3dB Limit70 Hz
Nominal Impedance8 ohms
Efficiency88 dB
Recommended Amplifier Power20-100 watts per channel


Cut-Out Diameter6 1/2" (16.51cm) 
Overall Diameter7 1/2" (19.05cm) 
Mounting Depth (includes 1/2" drywall)2 9/16" (6.51cm) 
Pre-Construction Bracket 
Overall Depth3 1/16" (7.78cm) 
Product Weight (each)2.85 pounds


Unit of Measureeach 
Total Shipping Weight4 pounds


Speaker WarrantyLifetime  

Specifications, dimensions and features subject to change without notice. For more information call us at 1-800-377-7655 (USA and Canada). Outside of North America call +1 (410) 358-3600.

SC50 Media

SC50 Accessories