Professional Series

4" Low Profile In-Ceiling

Sonance Professional Series PS-C43RTLP is a 70V/100V/8 Ohm selectable In-Ceiling Speaker that features a shallow 3.43” (87mm) construction for installations in restricted spaces such as beneath HVAC ducting or in 2’x4’ stud bays. It also features a one-piece bezel-less grille that is magnetically secured and allows for a one-step painting process to simplify installation and minimize visual distraction.

The optional Square Grille Adapter allows speakers to match the aesthetic of square downlights and HVAC grilles to achieve continual sight lines, as well providing an excellent solution for in-wall installations.

A high-excursion 4” polypropylene woofer delivers effortless low bass extension, even at high volumes, while the pivoting chambered 1” soft dome tweeter can be directed to ensure accurate coverage, when speaker positioning is compromised.

The PS-C43RTLP features a sealed metal enclosure, with back and side knock-outs removable Euroblock connector with loop-through, and seismic attachment. Additionally, the Sonance PS-C43RTLP is certified for UL 1480 and UL 2043.

Frequency Range (-10dB)
57Hz – 25kHz
Frequency Range (-3dB)
75Hz – 20kHz
Power Capacity
60 Watts Continuous Program Power | 30 Watts Continuous Pink Noise
Nominal Sensitivity
Nominal Coverage Angle
120 degrees conical coverage
Directivity Factor (Q)
Directivity (DI)
Rated Maximum SPL
105dB @ 1 meter (3.3 feet) average, 110dB peak
Rated Impedance
8 Ohms nominal, 6 Ohms minimum
Transformer Taps
30W, 15W, 7.5W (3.8W 70V)
Crossover Point
Overall Dimensions
9.13” Diameter x 3.43” Depth (232mm x 87mm)
Cut Out Dimension
8.25” Diameter (210mm)
Net Weight
6.00lbs (2.72kg) each
Shipping Weight
25.60lbs (11.62kg) pair
Unit of Measure
Pair (Single units upon request)
Supplied with bezel-less white grille. Optional black grille, or square adapter with black or white grille
LF Driver
4″ (100mm) Polypropylene Cone, Butyl Rubber Surround
HF Drive
1″ (25mm) Cloth Dome, Pivoting, Ferrofluid cooled
Input Connector
Four pin, Euroblock with loop output connections
One back-mounted, one side-mounted .75″ (19mm)
Safety Agency
UL 2043, UL 1480, NFPA 90A and NFPA 70, S7232
Ceiling Thickness Range
Suspension Points
One, on top surface



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