JBL Synthesis SCL-3 In-Wall Speaker

The SCL-3 is a custom in-wall loudspeaker designed primarily for use as an LCR behind projection screens or as a height channel in ceiling applications. It features JBL's patented 2409H 1-inch (25mm) compression driver mated to a High-Definition Imaging (HDI™) horn. Dual 5.25-inch (130mm) Advanced Aluminum Matrix cone cast-frame woofers provide detailed and dynamic response with low distortion. 

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Color White

Description / JBL Synthesis SCL-3 In-Wall Speaker

About the JBL Synthesis SCL-3

The Synthesis SCL-3 is a two-way SCL in-wall loudspeakers are the first flush-mount compression driver loudspeakers using JBL Professional technology. The dual 5-¼” cast frame aluminum woofers are ideal for in-wall or ceiling mounting. Utilizing the D2-derived 1-inch / 25mm annular ring compression driver with Teonex® diaphragm and an advanced HDI geometry horn, the SCL-3 provides unparalleled performance compared to any in-wall loudspeaker in the market today. The integrated MDF enclosure is designed for installation in standard 2x6 wood frame construction, and Internal connections allow for bi-wiring or bi-amplification in advanced installations. The SCL-3 is ideal for use in medium to large rooms.

Delivering high dynamics

The SCL-3 offers the highest level of acoustic performance available from a flush-mount loudspeaker. Utilizing JBL Professional’s patented D2 compression driver technology, the SCL-3 is capable of delivering very high dynamics with remarkably low-distortion for clarity and intelligibility at virtually any volume level.

Perfect solution for home theater system

The 2409H compression driver used in the SCL-3 is mated to JBL’s patented HighDefinition Imaging (HDI™) waveguide for remarkably uniform and predictable coverage over a wide area – eliminating the need for the speakers to be angled or aimed when installed. Low frequencies are delivered by two powerful cast-frame, Advanced Aluminum Matrix cone woofers operating in conjunction with the included MDF enclosure for consistent performance and minimal sonic intrusion into adjacent spaces. Premium network components, Bi-Wire and Bi-Amp capability, flexible mounting applications, and a ZeroBezel, magnetically attached grille leave no details unattended. The SCL-3 is the perfect solution for in-wall LCR, surround, or overhead height channel applications as part of JBL Synthesis home theater system.

Product Highlights

  • Two-way 5.25-inch (130mm) In-Wall Loudspeaker
  • Zero-bezel, magnetically-attached grille
  • Dual binding post inputs for bi-wire or bi-amplified connections
  • Low resonance, well damped MDF wood rear enclosures
  • Patent Pending extended range L-Bracket mounting system


Lead Time AvailabilityTypically 3-5 Days to Dispatch
Speaker Grille ShapeSquare
Overall Width418
Overall Height418
Overall Depth153
Frequency Response65 Hz – 33KHz
Impedance (Nominal)6 Ohm
Sensitivity (1W@1M)91dB
Recommended Amp200 watts RMS
Drivers Unit ComplementDual 5-¼” (130mm) cast-frame, advanced aluminum matrix cone woofers, D2-derived 1" (25mm) 2409H annular ring, Teonex® diaphragm compression driver
Weight (Kg)11.02
Warranty5 Years



JBL Synthesis SCL-2 In-Wall Speaker Front
€6,500.00 €6,500.00
JBL Synthesis SCL-4 In-Wall Speaker Front
€3,400.00 €3,400.00
JBL Synthesis SCL-6 In-Wall Speaker Front
€1,800.00 €1,800.00
DALI PHANTOM S-280 In-Wall Speaker Front
€4,299.00 €4,299.00

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