JBL Synthesis SCL-3 In-Wall Speaker

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Model: SCL-3 UPC: 050036330381 Item: 171344

JBL Synthesis SCL-3 In-Wall Speaker Overview

With the Synthesis surround system – a direct descendant of the Pro Cinema industrial line – JBL has redefined the home cinematic experience. Individually, the components are exemplary enough to fit into any advanced installation. But when combined into one unified system, JBL’s Synthesis speakers and electronics form a scalable end-to-end solution designed to transform any size or shape environment into an unparalleled soundstage. The SCL-3 in-wall speaker is ideal in any location – front, center, surround or above. These flush-mount marvels have dual 5¼-inch matrix cone woofers with efficient, low distortion neodymium magnet structures, for wide dynamic range and frequency response. The 1-inch compression tweeter features a Teonex diaphragm firing through a geometrically precise High Definition Imaging waveguide horn for accurate localization and dispersion. Flush-mount installation with magnetic, paintable white grille disappears in any room, and the sealed MDF enclosure provides the proper acoustic isolation. Mix and match the SCL-3 with its Synthesis siblings SCL-2 and SCL-4, plus a superior sub such as the S2S-EX, for a sonic signature that satisfies the most discerning ear.

Product Information

Product highlights

  • Two 5.25-inch cast-frame, aluminum matrix woofers with neodymium motors for wide dynamics and frequency extension
  • 1-inch Teonex compression tweeter with integrated HDI waveguide horn for maximum dispersion and accurate localization
  • Square dimensions maximize location and orientation options, from front L-C-R, to surround, to Atmos above
  • Sonic signature complements other speakers in JBL Synthesis line
  • MDF solid sealed in-wall enclosure for optimal acoustic performance
  • Matte-black molded baffle with zero-bezel paintable grille
  • Can be mounted in any direction for maximum installation flexibility
  • Center-mount feature secures center of front baffle to back of enclosure, to minimize resonances
  • Bi-amp or bi-wire capabilities with dual gold-plated binding posts
  • Maximum 300 watts continuous @ 6 ohms
  • Installation dimensions: 16.5" high x 16.5" wide x 6" deep
  • Weight: 24.3 lbs.
  • Warranty: 5 years – World Wide Stereo is an authorized dealer for every brand we sell
  • Included: World Wide Stereo 60-day guarantee and expert product support

Maximum sound

The entire JBL Synthesis line is designed for the finest reproduction. The SCL-3 starts with dual 5.25-inch woofers in rugged cast frames, with cones of Advanced Aluminum Matrix and powerful neodymium magnet assemblies, for low distortion with high responsiveness. And with a power capacity of 300 watts, the SCL-3 delivers the ultrawide dynamic range that today’s cinema soundtracks demand.

Maximum soundstage

JBL’s unique 1-inch compression tweeter is derived from its professional D2 design, with a diaphragm of tough, durable Teonex polyester film. It fires out via a patented High Definition Imaging (HDI) waveguide horn, also of the type found in JBL’s pro monitors, for maximum controlled dispersion and pinpoint soundstaging.

Maximum flexibility

The SCL-3’s square shape means it plays well at just about any position, from left-right mains to over-the-head Atmos. And the paintable magnetic grille means the SCL-3 blends into any décor, or disappears when placed, sans grille, behind an acoustically transparent projection screen.

Maximum synergy

The spec sheets say the SCL-3 can stand alone in any fine home theater setup. And it will. But it really shines when combined with the similarly sonic-signatured SCL-2s and SCL-4s and one or more S2S-EX subs. And when you build a custom, scalable Synthesis system, adding in the extravagant SDA-4600 multichannel amp, SDEC-4500P equalizer, and SDP-75 16- to 32-channel digital surround processor – oh my, you have to hear to believe.

Listen and be amazed

We at World Wide urge you to stop in if you’re in the neighborhood of our Ardmore, PA showroom, for a theatrical demonstration of the full Synthesis system. It’s guaranteed to leave you breathless. And as always, you can count on our unmatched product support and 60-day guarantee.

WWS: What we say

“It’s a different experience. There’s watching television, there’s going to the movie theaters, then watching theater in a JBL Synthesis room is the next level up. It’s that much of a difference, better than a theater by far.” – Robert Marcoccia, World Wide Stereo Ardmore Sales & Systems Designer

Prop 65 Warning

WARNING: California Residents - Proposition 65. This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.



  • Speaker type: 2-way in-wall loudspeaker
  • Low frequency transducer: Dual 5 1/4" cast-frame, advanced aluminum matrix cone woofers
  • Mid/High frequency transducer: D2-derived 1" 2409H annular ring, Teonex diaphragm compression driver
  • Maximum recommended amplifier power: 200W RMS
  • Frequency response (-6dB on-axis): 65Hz - 33kHz
  • Coverage area (-6dB @ 20kHz): 110 x 90 degrees (horizontal x vertical)
  • Sensitivity (2.83V @ 1m): 91dB
  • Nominal impedance: 6 ohms
  • Crossover frequencies: 1.3kHz
  • Enclosure type: Sealed in-wall mount with included back box
  • Inputs: Dual gold-plated five-way binding posts
  • Dimensions (H x W x D): 16.46" x 16.46" x 6.01"
  • Weight: 24.3 lbs.

What's in the Box

What's in the Box:

  • SCL-3 In-Wall Speaker
  • JBL logo set
  • 2x Center baffle screw
  • 8x Baffle screws
  • Grille
  • User manual
  • Back box with mounting brackets attached



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Prop 65 Warning

WARNING: California Residents - Proposition 65. This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.