Helix CB C87.2-S3 Basic - Coaxial System 87mm 3.5" - 3 Ohms - 40w RMS

HELIX CB C87.2-S3

HELIX COMPOSE. The perfect speaker for any composition. 

Born out of the increasingly demanding challenges of modern automobile technology and the HELIX-typical pursuit of intelligent solutions, we made the progressive redesign of proven universal speaker systems our mission. The result: our innovative HELIX COMPOSE platform that, according to the motto "developed inside the vehicle, for the vehicle", combines classic universal speakers with the advantages of vehicle-specific systems. Innovative materials and the latest technologies paired with smart, practical engineering - the best of both worlds in harmony: high efficiency, fantastic sound quality and enormous dynamics that fit in any vehicle. HELIX COMPOSE - universal speakers evolved.

The essentials for an exceptional sound experience 

You might have already guessed from the name: our BASIC component systems are the perfect introduction to the world of HELIX COMPOSE, providing all the essentials for an exceptional sound experience in your vehicle. All components harmonize perfectly and form an ideal team with our HELIX and MATCH amplifiers, guaranteeing maximum performance and power output at all times.

High efficiency 

HELIX COMPOSE equals smart engineering and accordingly implements highly efficient 3 Ohm technology, that perfectly harmonizes with all HELIX and MATCH amplifiers and at the same time allows a clearly perceptible plus in efficiency and maximum sound pressure. Certain models will also be available as an optional 2 Ohm variants, assuring the absolute maximum performance and power of the respective speaker in combination with the appropriate amplifier.

Powerful bass - always on point

In the BASIC series, our COMPOSE midbass driver combines high efficiency with excellent sound quality. The lightweight but stable polypropylene diaphragm provides exceptional sound performance while the sturdy basket is equipped with additional ventilation holes for optimized cooling. A powerful magnet system provides ideal impulse response and the soft polyurethane dustcap guarantees optimized frequency response in the upper midrange. Last but not least, the compact design is ideally suited for integrations in cramped spaces.

High frequency reproduction with unique dynamics

Of course, when entering the sound world of HELIX COMPOSE, precise highs are a must for an all-around exciting music experience. Accordingly, the tweeter uses a leightweight PEI dome as well as a highly efficient neodymium magnet - the result: unique dynamics in the high-frequency reproduction and crystal-clear sound.

Features

2-way coaxial speaker system which combines high efficiency with exceptional sound performance

3 Ohms technology for maximized power output of the amplifier

Compact design for trouble-free installation even in cramped conditions

Tweeter

0.5" / 13 mm tweeter with PEI dome for accurate treble response

Very efficient neodymium magnet for high magnetic flux linearity

Midrange

3.4" / 87 mm midrange with lightweight polypropylene cone which provides essential stiffness for exceptional sound performance

Sturdy steel basket with additional ventilation holes for better voice coil cooling and high power handling

Powerful magnet system for optimized impulse response

Crossover

Integrated with 6 dB slope

Technical data

Power handling RMS / Max. P40 / 60 Watts

Frequency response 110 Hz - 22,000 Hz

ImpedanceZ3 Ω

Sensitivity SPL88 dB @ 2.83V / 1m

84 dB @ 1W / 1m

Outer diameterø86.9 mm / 3.43"

Installation diameterø79.0 mm / 3.11"

Installation depth 42.0 mm / 1.65"

Midrange  

ImpedanceZ3 Ω

DC resistanceRe3.0 Ω

Resonance frequencyFs92 Hz

Mechanical Q factorQms3.80

Electrical Q factorQes0.74

Total Q factorQts0.62

ComplianceCms820 μm/N

Equivalent air volumeVas1.5 L

Force factorB*l2.9 Tm

Cone areaSd36 cm2

Moving massMms3.6 g

Mechanical resistanceRms0.52 kg/s

Voice coil diameter ø25 mm

Voice coil winding height

 8.3 mm

Max. linear excursionXmax+/- 2.2 mm

Tweeter  

Voice coil diameterø13 mm

Features  

Tweeter PEI dome and neodymium magnet

Midbass

Injected polypropylene cone

Crossover Integrated, 6 dB highpass

Scope of delivery

2 x CB C87.2-S3

1 x Mounting material

Please note - some items may incur extra shipping charges that have to be sent by courier and are too large / expensive to be sent by Royal Mail (for example headlamps, headunits, speakers, lowering springs etc) to the following postcode areas, Channel Islands, BT, most IV, HS, KA-27-28, KW-15-17, AB30-38, AB44-56, FK17-99, G83, KW1-14, PA21-40, PH18-26, PH30-41, PH49-50, all ZE, IM, and any other non mainland postcodes