SKU: 98413324160

Helix Compose Ci7 T20FM-SC - 20mm Silk Dome Flexmount Tweeters

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Ships within 48 hours · Estimated delivery Sep 29 - Oct 4

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Description

Helix Compose Ci7 T20FM-SC - 20mm Silk Dome Flexmount TweetersHELIX Ci7 T20FM SC 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 T20FM-SC

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 Car Audio 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.

Brilliant treble response

Our i7 tweeter is equipped with a fine-meshed silk dome with visco-elastic Acronal coating on both sides, guaranteeing a brilliant and smooth treble response. In addition, the integration of pure lamb’s wool and dampened coupling volume enables a very low resonance frequency and allows a deep acoustic coupling.

FlexMount20 – 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 tweeter effortlessly becomes a vehicle-specific tweeter, that can be easily installed in the original installation position of the vehicle in an acoustically optimized way with the matching FlexMount20 adaptor ring.

Features

  • Super-wide dispersion 0.75” / 20 mm high-end silk dome tweeter with coupling volume for lowest possible resonance frequency
  • Exceptionally lightweight and fine-meshed silk dome ensures brilliant and smooth treble response
  • High efficient neodymium magnet for high magnetic flux linearity
  • Integrated, dampened coupling volume allows a low crossover frequency thanks to its low resonance frequency
  • Sturdy Aluminum housing turned from solid
  • Compact design and various mounting options for numerous installation demands
  • Mounting pods for flush mount and angle mount included in delivery
  • Designed for the optionally available car-specific FlexMount20 adaptors which allow an acoustically optimized and professional integration in the original mounting location of the vehicle
  • Made in Germany

Technical data

Impedance   Z 4 Ω
DC resistance  Re  3.4 Ω
Frequency response    1,500 Hz - 30,000 Hz
Resonance frequency  Fs  950 Hz
Sensitivity SPL  91.0 dB @ 2.83V / 1m
88.0 dB @ 1W / 1m
Voice coil diameter   Ø 20 mm
Cone material    Silk dome with coupling volume
Outer diameter   32 mm / 1.26"
Installation diameter   27.2 mm / 1.07"
Installation depth   19 mm / 0.75" 
   
Recommended crossover frequencies for the highpass  
Slope    Minimum crossover frequency
6 dB/Octave  > 4,000 Hz
12 dB/Octave  > 3,000 Hz
24 dB/Octave   > 2,500 Hz

Compatibility

  • FlexMount20
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: 98413324160

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4.4 ★★★★★
Based on 9 reviews
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Verified Purchase
Alexx Hamilton
Lowell, US
★★★★★ 5
Good setup
This has been super useful and functional, I recommend it as it’s a nice way to keep your setup organized, I enjoy having the on and off switches go each outlet, only call out would be the buttons light up when on to show they are on and they are quite bright, so take note of it, it catches me off guard sometimes when I forget they light up and I turn my lights off, but it’s easier to keep in mind what I have charging. The speed of charging is good, the amount of plugs is a fair amount, I plug in my head phones, phone, watch, power bank and monitor. Then there’s the two usb as well as 2 usbc ports, it’s very convenient. It held up well it’s definitely good quality.
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Reviewed in the United States on March 22, 2026
T
Verified Purchase
Terry
Boise, US
★★★★★ 5
Thoroughly enjoy this product and will purchase again
I purchased two of these at different times. I really like this item. I like the idea that I could shut off some of the switches that I really don’t need. I have one set up in the guest room for when we have company they can turn on whatever plugs they need. I’ll always have alarm clocks lamps telephone jacks hooked up, but all the switches are turned off so it doesn’t waste electricity. (that’s my theory anyway.) I purchased a second one to go beside my chair in my living room I don’t need that many outlets at all times but occasionally I do and I enjoy again like having the opportunity to shut off any outlets that I’m not needing at the time it seems to me it’s a good power saver and I do like the USB ports everything fits and it’s perfectly organized and it’s great quality surge protector and durability. I hope this review assist you in anyway and I will probably come back and purchase a third one for another room once I get that room cleaned out Truth Hurts on it, but that was my testimony.. This is my honest review in my opinion I hope it’s able to help you make your decision. I personally don’t think you would go wrong but I don’t know what you’re plugging into the outlet so I think that makes a bit different. I just use it for lamps and telephone jacks or small items I don’t use anything. It pulls a lot of voltage. . Y’all take care of yourselves be kind to one another and go see your parents or your grandparents or a family member if anything else pick up the phone and tell them hello and you were thinking about Let’s spread love, not hate
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Reviewed in the United States on February 28, 2026
S
Verified Purchase
Spearra
Chelsea, US
★★★★★ 5
Has a ton of quality of life features!
These are one of those products that makes you go "why doesn't anyone else do this"? First off, the 45 degree(ish) angle that the outlets are at. Since a lot of outlet adapter plugs can be plugged in upside down, the angle of the outlet helps considerably for semi-tight spaces. While also still having room to turn the individual outlets on and off. The width spacing is also considerably large so those beefy power bricks won't overlap/block-off other outlets. Secondly, the prior-mentioned outlet on and off switches. Each individual AC outlet has its own on/off switch. So if I have a lamp that always needs to be plugged in, I can leave that on. If I have a USB C adapter brick to charge my phone, I can turn that off when its not in use. Without needing to turn off the lamp's outlet in the process. Thirdly, the always on USB A (the rectangular USB outlets), and the USB C ports to the top side of the outlet. Please note that the USB C ports are about 20 watts. So while it can TECHNICALLY charge a laptop, its best used to passively charge a laptop when it isn't being used. Not while actively using a laptop. Since even moderately efficient laptops can draw watts well into the 40's range. That aside, when used within their intended watt ranges, they're extremely convenient to have in addition to everything else. I generally use them to charge things like power banks. Possibly low powered USB C devices like a Nintendo Switch or even a GPD microPC which draws 15 or so watts while in use. So while the ports aren't the highest in terms of watts, there's times of many where I didn't care how many watts a port had, I just needed a USB port period. Fourth wise, the safety protections. If you somehow manage to overload this outlet, it can cut off its own power. It can be "reset" by pressing the red button to the side. Fifthly, the actual plug to plug the power outlet into a wall or in my case a UPS machine, is insanely flat. With the cord being at a 45 or so degree angle. So even if its on a top outlet, it probably won't block off most plugs from using the bottom outlet. Sixth and finally (at least from what I remember off the top of my head 😂), the wire that connects the power outlet to your power source is really flat and easy to manage. All of these traits makes it one of the least contentious things anybody can buy. Its just a straight up quality of life improvement. If I ever need more power outlets, I know which one to double dip on!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 29, 2023
W
Verified Purchase
Winnie
Houston, US
★★★★★ 4
Skin
Good power cord with multiple functions.
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Reviewed in the United States on June 8, 2025
D
Verified Purchase
DJ Moore
Los Angeles, US
★★★★★ 5
Excellent Power Strip for Convenient Charging Options
I recently purchased the HOPOW Flat Plug Power Strip for my son's desk, and it has been an excellent addition to his workspace. This power strip offers a range of convenient features that have greatly impressed me. First and foremost, the inclusion of USB A and USB C charging options is a game-changer. It's incredibly convenient to have both options readily accessible on the top of the power strip rather than tucked away on the side. This design choice ensures easy and quick charging for various devices without any hassle. One aspect that sets this power strip apart is the individual switches with LEDs for each plug. These switches provide an added level of control, allowing me to turn off specific devices when not in use without affecting others. The LEDs also serve as handy indicators, making it easy to identify which devices are powered on at a glance. In terms of build quality, the HOPOW Flat Plug Power Strip has truly impressed me. It feels solid and durable, giving me confidence that it will withstand regular use. The flat plug design is a clever addition, as it allows the power strip to sit flush against the wall, saving valuable space on my son's desk. Overall, I am extremely pleased with my purchase of the HOPOW Flat Plug Power Strip. Its convenient USB charging options, easily accessible plugs, individual switches with LEDs, and impressive build quality have made it an invaluable asset for my son's desk. I highly recommend this power strip to anyone in need of a reliable and user-friendly charging solution.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 27, 2023

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