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 speaker block connector with loop-through, and seismic attachment. Additionally, the Sonance PS-C43RTLP is certified for UL 1480 and UL 2043. Specs Frequency Range (-10dB) - 57Hz - 25kHz Frequency Range (-3dB) - 75Hz - 20kHz Power Capacity - 60 Watts Continuous Program Power | 30 Watts Continuous Pink Noise Nominal Sensitivity - 87dB Nominal Coverage Angle - 120 degrees conical coverage Directivity Factor (Q) - 7.6 Directivity (DI) - 8.1dB 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 - 3000Hz Overall Dimension - 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)