The Blam SR165C is a high-efficiency 165 mm coaxial car speaker kit built for accurate full-range reproduction. It pairs a 165 mm woofer with a 20 mm coaxial soft-dome tweeter and integrated 6 dB/octave high-pass filters.

Key components include a glass-fiber reinforced composite basket, treated cellulose pulp cone, butyl surround, Conex long-life spider, 25 mm voice coil on Kapton former, 85 x 17 mm magnetic motor with 5 mm magnetic circuit, and an N38 neodymium tweeter motor. The kit includes mounting screws and installation instructions and is intended for replacement of standard 165 mm car speaker locations and connection to standard head unit or amplifier wiring.