Helix Compose i5 Ci5 M50FM-S3 Wideband Speakers 2 Inch 50 mm FlexMount 70w RMS
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The Helix Ci5 M50FM-S3 is a pair of 2-inch (50 mm) wideband speakers from the Helix Compose i5 range, rated at 70 W RMS at 3 ohms. Universal FlexMount CFM50 rings are supplied, making them suitable for tight factory mounting positions.
This listing is the 2-inch M50FM-S3. The Helix Compose i5 wideband range is also available in 3-inch (80 mm) — the Ci5 M80FM-S3, rated at 90 W RMS.
Key specifications
- Size: 2" / 50 mm wideband
- Power handling: 70 W RMS / 100 W max
- Impedance: 3 ohms
- Frequency response: 300 Hz to 20 kHz
- Sensitivity: 89 dB @ 2.83 V / 1 m (85 dB @ 1 W / 1 m)
- Cone: Silicon coated paper
- Installation depth: 25.2 mm
- Magnet: Push-pull neodymium
- Mounting rings: FlexMount CFM50 (included)
Developed Inside the Vehicle
Compose is Helix's answer to modern car design. Developed inside the vehicle, for the vehicle, it combines universal-fit speakers with the performance benefits of vehicle-specific systems.
3 Ohm Efficiency
The 3-ohm design raises efficiency and maximum sound pressure. Impedances are matched to Helix and Match amplifiers, so the pairing always delivers full performance.
FlexMount Fitting
The i5 series uses Helix's FlexMount system. This simplifies installation across a wide range of vehicles and factory speaker positions, reducing the need for custom brackets or adapters.
Explore the full range in Helix Compose i5.
Specification
| Power handling | RMS / Max. P 70 / 100 Watts |
|---|---|
| Impedance | Z 3 Ω |
| Frequency response | 300 Hz - 20,000 Hz |
| Sensitivity | SPL 89 dB @ 2.83 V / 1m 85 dB @ 1W / 1m |
| Cone | area Sd 19.6 cm² |
| Cone | material Silicon coated paper cone |
| Voice coil | diameter ø 20 mm |
| Voice coil | winding height 7 mm |
More specs
| |
What's Included
- 2 x Ci5 M50FM-S3
- 2 x Universal FlexMount CFM50 MULTI.1
- 2 x Speaker gasket
- 2 x Mounting ring with grille
- 1 x Mounting material
Helix
About the Helix CI21200
From our tech experts at CEN
The Helix Ci5 M50FM-S3 is a pair of 2 inch (50 mm) wideband speakers from the Compose i5 series, rated at 70 W RMS and 100 W maximum at 3 ohms. They cover 300 Hz to 20 kHz with push-pull neodymium magnets and need just 25.2 mm of depth.
Who it suits
Small factory dash or pillar positions where a tweeter alone sounds thin, as a single driver can cover midrange and treble together. Universal FlexMount CFM50 rings are supplied. If you have room for a 3 inch driver, the Ci5 M80FM-S3 handles 90 W RMS.
Our tech experts advise
Use a high-pass to keep deep bass away from such a small cone; a DSP gives the most control. Aim them towards the listening position where the location allows. Get in touch and we will confirm what your dash takes.
Explore the full Helix range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all Helix
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Have it Fitted By Our Team
Our team fits car audio, stereos, dash cams and vehicle security at our workshop in Beeston, Nottingham. Tell us your vehicle and we'll confirm the parts and a fitted price.
- 1
Tell us your vehicle
Make, model and year, and what you'd like fitted.
- 2
We confirm the parts
Fascia, wiring and interfaces checked for your car, with a fitted price.
- 3
Fitted at our workshop
Bring it to our Beeston workshop and we do the rest.
Unit 25 Technology Drive, Beeston, Nottingham NG9 1LA
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Frequently Asked Questions
Q: Will these speakers fit my car?
A: Most car speakers are standard sizes, but mounting depth and fitting rings vary by vehicle. Check the size in the Specification tab against your vehicle, or contact CEN with your registration and we will confirm fitment and any adapters or fitting kits you need.
Q: Do I need an amplifier to run these speakers?
A: Not always. Most speakers will run from a standard head unit, but a dedicated amplifier lets them perform at their best, particularly for component sets and higher power handling models. The RMS figure in the Specification tab is the guide to how much clean power they can use.
Q: What is the difference between coaxial and component speakers?
A: Coaxial speakers combine the tweeter and woofer in one unit for a simple like-for-like upgrade. Component sets separate the tweeter and woofer with a crossover for better imaging and detail, and suit installs where sound quality is the priority.
Q: Do these come as a pair?
A: Unless stated otherwise, car speakers are sold in pairs. Check the product title and What's Included tab, which lists exactly what is in the box.
Q: Can CEN fit these speakers for me?
A: Yes. CEN offers professional installation from our Nottingham premises. Contact us to book an installation slot or ask for a fitting quote.
Q: What is the frequency range of the Ci5 M50FM-S3?
A: 300 Hz to 20 kHz, so it can cover the midrange and treble in one driver.
Q: What is the mounting depth of the Ci5 M50FM-S3?
A: Installation depth is 25.2 mm with a 50.9 mm installation diameter. Outer diameter is 59.8 mm, or 70.0 mm with the mounting ring.
Q: What comes in the box with the Ci5 M50FM-S3?
A: 2 x Ci5 M50FM-S3 speakers, 2 x universal FlexMount CFM50 MULTI.1, 2 x speaker gaskets, 2 x mounting rings with grille and mounting material.
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