Offers and product news directly to your email
The HELIX COMPOSE i7 series is a high-end 2-way coaxial with excellent sound quality.
NOTE! these coaxials do not contain any crossovers and are best suited with a DSP amplifier (Helix Ci7 FX-UNI.2 crossovers can also be used with the set).
The ohm rating of the Compose series speakers is optimized for the Helix / Match DSP processors.
Compose i7 series uses high-quality materials:
- High-End silk dome tweeter with excellent sound quality.
- The midbass's extremely lightweight and coated paper cone ensures accurate and detailed reproduction.
- The midbass body is made of a polymer composite, which is additionally reinforced with glass beads, resulting in a very rigid and reverberant-free material.
- Powerful magnets.
One of the key elements of the Compose series is a patented mounting system called FlexMount, which is based on specially developed speaker adapters.
This technology allows you to install i7 speakers in an almost infinite number of car models by simply changing the adapter ring that fits your car.
FlexMount adapter rings are either included with the speaker or can be purchased separately (be sure to check out our FlexMount selection).
Technical data
Power handling RMS / Max. P 150 / 225 Watts
Frequency response 50 Hz to 30,000 Hz
Impedance Z 3 Ω
Sensitivity SPL 92 dB @ 2.83V / 1m
88 dB @ 1W / 1m
Outer diameter ø 165.0 mm / 6.50"
Installation diameter ø 142.0 mm / 5.59”
Installation depth 65.8 mm / 2.59”
Midbass
Impedance Z 3 Ω
DC resistance Re 3.0 Ω
Resonance frequency Fs 59 Hz
Mechanical Q factor Qms 3.99
Electrical Q factor Qes 0.64
Total Q factor Qts 0.55
Compliance Cms 572 μm/N
Equivalent air volume Vas 13.3 L
Force factor B*l 4.7 Tm
Cone area Sd 131 cm2
Moving mass MMS 13.0 g
Mechanical resistance Rms 1.21 kg/s
Voice coil diameter ø 37 mm
Voice coil winding height
13.4 mm
Max. linear excursion Xmax +/- 3.7 mm
Tweeter
Impedance Z 4 Ω
Voice coil diameter ø 20 mm
Features
Tweeter Silk Dome with coupling volume
Midbass
Ultra high damping (UHD) crafted paper cone, ProConnect terminal
and FlexMount165
Crossover 2-way active: two Amplified DSP channels per speaker required
2-way passive: i7 FX-UNI.2 optionally available
Compatibility
FlexMount165
WireKits
Scope of delivery
2 x Ci7 C165.2FM-S3
2 x Tweeter connection cable
2 x Midbass connection cable
1 x Mounting material
1 x Instruction manual
The HELIX COMPOSE i7 series is a high-end 2-way coaxial with excellent sound quality.
NOTE! these coaxials do not contain any crossovers and are best suited with a DSP amplifier (Helix Ci7 FX-UNI.2 crossovers can also be used with the set).
The ohm rating of the Compose series speakers is optimized for the Helix / Match DSP processors.
Compose i7 series uses high-quality materials:
- High-End silk dome tweeter with excellent sound quality.
- The midbass's extremely lightweight and coated paper cone ensures accurate and detailed reproduction.
- The midbass body is made of a polymer composite, which is additionally reinforced with glass beads, resulting in a very rigid and reverberant-free material.
- Powerful magnets.
One of the key elements of the Compose series is a patented mounting system called FlexMount, which is based on specially developed speaker adapters.
This technology allows you to install i7 speakers in an almost infinite number of car models by simply changing the adapter ring that fits your car.
FlexMount adapter rings are either included with the speaker or can be purchased separately (be sure to check out our FlexMount selection).
Technical data
Power handling RMS / Max. P 150 / 225 Watts
Frequency response 50 Hz to 30,000 Hz
Impedance Z 3 Ω
Sensitivity SPL 92 dB @ 2.83V / 1m
88 dB @ 1W / 1m
Outer diameter ø 165.0 mm / 6.50"
Installation diameter ø 142.0 mm / 5.59”
Installation depth 65.8 mm / 2.59”
Midbass
Impedance Z 3 Ω
DC resistance Re 3.0 Ω
Resonance frequency Fs 59 Hz
Mechanical Q factor Qms 3.99
Electrical Q factor Qes 0.64
Total Q factor Qts 0.55
Compliance Cms 572 μm/N
Equivalent air volume Vas 13.3 L
Force factor B*l 4.7 Tm
Cone area Sd 131 cm2
Moving mass MMS 13.0 g
Mechanical resistance Rms 1.21 kg/s
Voice coil diameter ø 37 mm
Voice coil winding height
13.4 mm
Max. linear excursion Xmax +/- 3.7 mm
Tweeter
Impedance Z 4 Ω
Voice coil diameter ø 20 mm
Features
Tweeter Silk Dome with coupling volume
Midbass
Ultra high damping (UHD) crafted paper cone, ProConnect terminal
and FlexMount165
Crossover 2-way active: two Amplified DSP channels per speaker required
2-way passive: i7 FX-UNI.2 optionally available
Compatibility
FlexMount165
WireKits
Scope of delivery
2 x Ci7 C165.2FM-S3
2 x Tweeter connection cable
2 x Midbass connection cable
1 x Mounting material
1 x Instruction manual