Helix CB W165-S3

Helix CB W165-S3 – 6.5″ midbass driver

The Helix CB W165-S3 is a 165 mm (6.5″) midbass driver from the BASIC series of the HELIX COMPOSE platform. COMPOSE was created by reworking proven universal speakers to meet the demands of modern vehicles, combining the flexibility of universal designs with the fit of vehicle-specific systems under the motto “developed inside the vehicle, for the vehicle”. BASIC is the entry point into the COMPOSE range and is designed to be driven by HELIX and MATCH amplifiers.

Its 3 Ω design is matched to HELIX and MATCH amplifiers and delivers a noticeable gain in efficiency and maximum sound pressure. A lightweight but stable injected polypropylene cone, a specially shaped rubber surround for larger effective cone area and excursion, a ventilated steel basket and a powerful magnet system give fast impulse response, while a soft polyurethane dustcap refines the upper midrange. The compact construction suits tight installation spaces.

Key Features

• 6.5″ / 165 mm midbass: lightweight injected polypropylene cone with the stiffness needed for good sound
• 3 Ω technology: maximises amplifier power output, tuned for HELIX and MATCH amplifiers
• High efficiency: 92 dB @ 2.83 V / 1 m sensitivity
• Shaped rubber surround: increases effective cone area and maximum excursion
• Ventilated steel basket: additional vents for better voice coil cooling and higher power handling
• Powerful magnet system: tight, precise impulse control
• Polyurethane dustcap: soft dustcap for a smoother upper-midrange response
• Compact design: suitable for tight mounting spaces

Drivers & Construction

• Cone: injected polypropylene, Sd 141 cm²
• Surround: specially shaped rubber surround
• Voice coil: 25 mm diameter, 8.9 mm winding height
• Basket: sturdy steel basket with additional ventilation
• Dustcap: soft polyurethane

Acoustic Performance

• Power handling: 80 W RMS / 120 W max.
• Impedance: 3 Ω (DC resistance Re 3.0 Ω)
• Sensitivity: 92 dB @ 2.83 V / 1 m; 88 dB @ 1 W / 1 m
• Frequency response: 60 Hz – 3,500 Hz
• T/S parameters: Fs 62 Hz, Qms 4.50, Qes 0.90, Qts 0.75, Vas 14.5 l, Cms 520 µm/N, Bl 4.1 Tm, Mms 13.2 g, Rms 1.10 kg/s
• Max. linear excursion (Xmax): ±2.5 mm

Installation Notes

• Outer diameter: 166.0 mm / 6.54″
• Installation diameter: 143.0 mm / 5.63″
• Installation depth: 61.4 mm / 2.42″

Technical Specifications

Scope of Delivery

2 x CB W165-S3
2 x Mounting material