SKU: 15021667112

Helix Compose Ci7 M100FM-S3 - 4" Midrange Speakers - 3 Ohms

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Description

Helix Compose Ci7 M100FM-S3 - 4" Midrange Speakers - 3 OhmsHELIX Ci7 M100FM 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

HELIX Ci7 M100FM-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.

i7 – High-end made in Germany

Our HELIX COMPOSE i7 series represents uncompromising high-end for an outstanding sound experience in the automobile. With obvious influence of the high-end sister brand BRAX, the i7 speaker series is completely made in Germany and optimized for uncompromising music enjoyment. All speaker impedances are perfectly matched for the combination with our HELIX and MATCH amplifiers, guaranteeing maximum performance at any time. In addition, HELIX COMPOSE introduces four new mechanical technologies that offer unbeatable practical benefits.

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.

UHD (Ultra High Damping) crafted paper cone

With notable influence from the sister brand BRAX and our uncompromising high-end philosophy, only the highest quality components, such as the proprietary, handmade UHD (Ultra High Damping) paper cone, are used in the i7 series. manufactured in a particularly complex process, this cone guarantees an optimal frequency- as well as the best possible impulse response for incomparable music enjoyment.

High-tech polymer basket

All HELIX COMPOSE i7 and i3 speaker baskets are made of a high-tech polymer composite, which has been additionally reinforced with glass spheres. The result: maximum stability with minimal self-resonance, while also eliminating flux modulation of the magnetic system and maximum resistance to thermal influences. Last but not least, this allows for much more compact basket dimensions and thus simplified installations in cramped installation conditions.

FlexMount100 – Universal meets car-specific

FlexMount is a mounting system based on specially developed adaptor rings, allowing the installation of COMPOSE FlexMount speakers in an almost infinite number of vehicles. Thus, the universal loudspeaker effortlessly becomes a vehicle-specific loudspeaker, that can be easily installed in the original installation position of the vehicle in an acoustically optimized way with the matching twist-lock FlexMount100 adaptor ring.

FlexConnect – One terminal for all cases

With our FlexConnect terminal, HELIX COMPOSE speakers can easily be connected directly to the original wiring harness of the vehicle, maintaining the automotive standard of the plug connection as well as guaranteeing reverse polarity protection. Similar to our FlexMount system, this technology relies on specially developed, vehicle-specific adaptors.

Features

  • 4” / 100 mm high-end midrange speaker which combines outstanding sound performance with versatile physical integration options
  • High efficiency and 3 Ohms technology for maximized power output of the amplifier
  • Ultra High Damping (UHD) crafted paper cone for outstanding impulse response and unmatched frequency response
  • High-tech polymer composite basket reinforced with glass beads for enormous rigidity and minimized ringing
  • Specially shaped rubber surround for high linear cone excursion
  • Polyurethane dustcap for optimized frequency response in the upper midrange area
  • 1” / 25 mm voice coil ensures minimum thermal compression and high power handling
  • Automotive grade FlexConnect terminal for fast, secure and fail-safe connection
  • Powerful push-pull neodymium magnet system for highest efficiency and extremely low distortion
  • Universal FlexMount100 mounting ring (with standard 4-point mounting) included in delivery
  • Designed for the optionally available car-specific FlexMount100 adaptors which allow an acoustically optimized and professional integration in the original mounting location of the vehicle
  • Made in Germany

Technical data

Power handling RMS / max. P
 100 / 150 Watts
Impedance  Z 3 Ω
DC resistance  Re 3.0 Ω
Frequency response   110 Hz - 7,000 Hz
Resonance frequency  Fs 85 Hz
Mechanical Q factor  Qms 4.58
Electrical Q factor  Qes 0.52
Total Q factor Qts 0.47
Compliance Cms 590 µm/N
Equivalent air volume Vas 2.5 L
Force factor  B*I 4.3 Tm
Sensitivity SPL 91 dB @ 2.83 V / 1m
87 dB @ 1W / 1m
Cone area  Sd 55 cm²
Moving mass  Mms 5.9 g
Cone material   Ultra high damping (UHD) crafted paper cone
Mechanical resistance  Rms 0.69 kg/s
Voice coil diameter ø 25 mm
Voice coil winding height   5.5 mm
Max. linear excursion  Xmax +/- 1.3 mm
Outer diameter ø 98 mm / 3.86"
Outer diameter with universal mounting ring ø 104,5 mm / 4.11"
Installation diameter ø 89 mm / 3.50"
Installation depth   26.9 mm / 1.06"
Features   FlexConnect terminal,
powerful push-pull neodymium magnet system,
FlexMount100

Compatibility

  • FlexMount100
  • FlexConnect Inlays
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 15021667112

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4.3 ★★★★★
Based on 23 reviews
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Product Reviews
G
Gus A.
Port Orchard, US
★★★★★ 3
Wow that light color ring is annoying
There is no way to turn this color light off. I don't even know why it has to have a light at all. I suppose it is to tell you it has power. But the light could have been something that momentarily turns on and then off as you place the phone on. I'm a DIY'er and I'm going to find a way to take this apart and disable the light. I'll report back if I'm successful. The good news is that this mount is identical to another one I have except for the magnet charging section. I'm talking it is identical down to the knobs and metal arm so it's generic in that sense. They only changed out the magnetic section. This type of mount holds well to the screen. The charging speed seemed adequate. Not terribly fast but not slow. Wirelessly charging is always slower than plugged in. The supplied USB cable is braided and feels like quality. See attached picture. This mount is not something you'll necessarily want to use every time you drive. Therefore the color ring is annoying.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 20, 2026
C
Check this out America!
Natrona Heights, US
★★★★★ 5
SLEEK EXTENDABLE SCREEN MOUNT
HIGH SPEED TESLA MAGSAFE POWER i picked this up for my Model 3 to see if the 25W Qi2.2 charging actually lives up to the hype during my daily work week. ✨ The CNC aluminum build is top notch and feels much more robust than the flimsy plastic mounts i have tested. It's a piece of cake to clamp onto the corner of the Tesla screen and the metal arm matches the interior aesthetics perfectly. The magnetic hold is strong enough to keep my phone secure even when i am taking sharp turns thru my weekend adventures. ✨ Performance is where this thing shines because it actually delivers the 25W speeds without overheating. The built in cooling fan is a smart design choice that keeps the temperature down during long drives. i can hear the fan if the music is off but it's barely noticeable and definitely worth it for the consistent charging speed. ✨ The RGB lighting adds a subtle glow that makes it easy to find the mount in the dark without being distracting. Having the extendable arm is a big benefit for finding the perfect line of sight without blocking the main touchscreen. It's clearly a well thought out solution for any Tesla owner who wants a professional grade charging setup. THE VERDICT This is a exceptional piece of hardware that delivers real world results for high speed charging. The combination of active cooling and a sturdy metal build makes it a first class addition to my car. 'As a 35 year veteran of the computer technology industry, I offer informed and experienced perspectives in my product reviews.' I will update this review if anything changes within 1 year. ★★★★★ (5 Stars): A 5 star rating indicates the product meets my expectations for its purpose.
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Reviewed in the United States on February 13, 2026
P
Verified Purchase
Peter
Whiting, US
★★★★★ 5
Great Product!!!
Color: Black
**Overall impression** The Anker MagSafe Charger Compatible, MagGo 3-in-1 is a seamless blend of practicality and modern design. It’s compact enough for a nightstand or desk, yet versatile enough to handle multiple devices in one tidy setup. If you value cable-free convenience and a tidy charging solution, this is a standout choice. **What I liked** - **Strong MagSafe performance**: The magnetic alignment feels precise, snapping right into place on my iPhone 13/14/15 with reassuring stability. Wireless charging is quick and steady, even with a case on (I tested a standard silicone case and a slightly thicker one). - **3-in-1 convenience**: It’s not just a charger for your phone—the MagGo 3-in-1 includes a dedicated spot for AirPods or other wireless earbuds and a small stand for Apple Watch or another device, depending on your setup. This eliminates clutter and keeps essentials within arm’s reach. - **Sleek, minimal design**: The matte finish and low-profile footprint look great on a nightstand or desk. It blends in with most decor and doesn’t draw unwanted attention to the charging area. **Build quality**: Solid construction with quality materials. The stand holds devices steadily, and the cable management is thoughtful, helping to reduce cable chaos. **Ease of use**: Set up is straightforward—just plug in, place devices, and you’re charging. The integrated design means fewer cables and an cleaner surface. **Bottom line** If you’re after a convenient, stylish, all-in-one charging solution, the Anker MagSafe Charger Compatible, MagGo 3-in-1 delivers. It’s reliable, well-built, and surprisingly versatile, making it a strong upgrade over standard single-device chargers. The few caveats around ultra-thick cases and watch-fit are minor trade-offs for the convenience and organization it brings to your space.
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Reviewed in the United States on March 25, 2026
J
Verified Purchase
Jen Rodriguez
Chelsea, US
★★★★★ 5
Reliable, sturdy, and well-designed
Color: Black
I bought the Anker MagGo 3-in-1 Charging Station for my husband at Christmas, and it’s been on his nightstand and used consistently ever since. We’ve tried similar multi-device chargers before, but they always felt cheaply made and didn’t hold up over time. This one is completely different. Right out of the box, it felt solid and well-built — definitely a noticeable step up in quality. It charges his phone, Apple Watch, and AirPods simultaneously without any issues, and the MagSafe connection is strong and secure. It keeps everything organized in one sleek spot, which makes the nightstand look cleaner and less cluttered. If you’re tired of flimsy charging stations that don’t last, this one is absolutely worth it. Reliable, sturdy, and well-designed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 3, 2026
S
Verified Purchase
Super Cool Person
Cuba, US
★★★★★ 5
Works Pretty Great
Color: Black, Color: Black
Used it for a month so far. It looks cool and has a very strong magnetic connection on both the phone and watch pads. The stand has a good amount of weight to the base of it while still being small and compact. I was able to charge both my phone and watch simultaneously and it seems to work pretty well, though I’ll update this review if it ever fails. I have an ESR case and it holds my iPhone 14 Pro very firmly and I can rotate or angle it any way I’d like on the stand. HTX Studio ran battery health charging tests across multiple iPhone using wired vs. wireless charging and proved that wireless charging barely but still noticeably improves battery health (doesn’t degrade it as much) over time since it charges slightly slower and can manage its heat slightly better because of that. Do keep in mind that wireless charging is about 50% as efficient as wired charging so you’ll spend around $8-12 per year charging your phone instead of $4-6 (which is negligible for the convenience it offers in my opinion). Price is a little steep but this is the best charging stand I could find on Amazon after lots of research. It does not have active cooling but it’s made of aluminum and similar materials so it should handle heat better than say a silicone one would. Overall, it looks pretty nice and does what’s asked of it. See attached photos. Screenshots are from my phone being charged on the stand. I tested it with my Apple watch (series 9) and phone at the same time, too, but that’s not in the pictures. Latest update: I had issues with Apple Watch charging during the WatchOS 26 Release Candidate update but the full release resolved those issues.
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Reviewed in the United States on August 15, 2025

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