ENGINEERED IN GERMANY
CENTERCENTER
USER MANUALUSER MANUAL
2
General instructions for installing HELIX loudspeakers
To prevent damage to the speakers and possible inju-
ry, read this manual carefully and follow all installation
instructions. This product has been checked for proper
function prior to shipping and is guaranteed against man-
ufacturing defects.
For a proper performance and to ensure full warranty
coverage, we strongly recommend having this product
installed by an authorized HELIX dealer.
If you choose to perform your own installation read the
following information and precautions carefully. Failure to
follow the stated precautions may result in personal injury
and / or damage to the audio system or vehicle.
1. Always make sure that the speaker will t into the in-
tended mounting location and that there is adequate
depth for the magnet system.
2. Check for adequate space between speaker and
window, window crank, power window mechanism,
seat, rear deck torsion bars, and other items which
may interfere with the speaker’s mounting. This
is very important if any hole cutting is required.
Detailed size information is indicated in the dimen-
sion section of this manual. Take care that the mount-
ing surface is at and free from all obstructions.
3. Ensure that the loudspeakers are correctly connect-
ed in polarity. Exchanging plus and minus may result
in signicant loss of sound quality. The positive leads
of the loudspeakers are marked red.
4. Make sure that all speaker wiring is fully protected
from cutting or wear at sharp edges, which can lead
to short circuits that may damage your head unit, am-
plier and / or speaker system.
5. Verify that all connection wires are long enough in
order to avoid any mechanical stress on the wires
or the connectors.
6. Make sure that all components are mounted properly.
7. Do not mount the components where water may
splash on them.
8. The quality of the installation has a signicant eect
on the overall performance of the speaker system.
Treat each installation step with a high degree of
attention.
9. Avoid low frequency cancellation caused by air leak-
age between the speaker basket and the mounting
surface (e.g. mounted on a bent or uneven surface
or mounted in an oversized hole).
10. Mounting panel reinforcement may be necessary in
some cases in order to ensure a stable, torsion-free
and even surface. This can be achieved by mounting
the speaker on a metal, plastic or wooden sub-bae
behind the body or door panel. Consult an installation
specialist for further advice.
11. In most cases you can use the original speaker
mounting locations in the doors, A-pillars, body pan-
els or the rear deck. If these are not available you
have to prepare your own secure installation place.
Due to their structural integrity and accessibility the
precut mounting holes should be used whenever
possible. Information on a proper mounting can be
found in the section “Installation” of this manual.
IMPORTANT: Never cut any metal that is an integral part
of an automobile`s safety or structural car body.
We strongly recommend that you operate the complete
audio system at low volume before nal installation. So
you can check whether each speaker is working before
securing the loudspeakers into their mounting locations.
Congratulations!
General instructions
Dear Customer,
Congratulations on your purchase of this high-quality product.
HELIX COMPOSE highlights best quality, excellent manufacturing and state-of-the-art sound quality.
Thanks to more than 35 years of experience in research and development of audio products HELIX COMPOSE sets new
standards in the car audio speaker market.
We wish you many hours of enjoyment with your new HELIX COMPOSE components.
Yours
AUDIOTEC FISCHER Team
Find your composition
Go to www.audiotec-fischer.com/compose to
explore the whole HELIX COMPOSE platform
3
Mounting Ci5 M80FM-D3 CTR
Option a:
Professional integration with universal MULTI.1 or
MULTI.2 (included) or optionally available car-specic
Note: the adaptor rings can be mounted in two direc-
tions. Make sure to use the appropriate mounting option for your
vehicle. Additionally, the rings MULTI.1 & MULTI.2 can be individ-
ually adapted to the installation position by removing superuous
mounting ears.
Caution: When cutting or trimming the mounting ears, sharp edges
may form and small fragments may break o. To avoid injury, it is
recommended to wear appropriate protective gear such as gloves
and safety glasses.
Option b:
Mounting with to
adaptor (included)
Step 2
Step 1
Step 3
Step 5
Step 4
Step 3
Step 1
Step 2
MULTI.1 MULTI.2
Installation
4
Installation
OPTIONAL: Wiring eCall function
Custom
connection
eCall
or
From factory
cable harness
for eCall
This center speaker features an additional dedicated voice coil for eCall applications. This secondary voice coil may be
optionally connected if the vehicle is equipped with an eCall system.
Pre-assembled cables with a vehicle-specic (Mercedes) connector are already attached to facilitate installation.
Note: This voice coil is exclusively intended for eCall functionality and is not suitable for audio playback.
For standard audio operation, the primary voice coil with the FlexConnect terminal must be used. Connection examples
are provided on the following pages under Wiring options.
Mercedes-specic
connector
5
Car-specic inlay –
comes with the speaker
Option c: Direct connection to OEM connector with
car-specic inlay
Inlay Vehicle compatibility
A Mercedes
B Audi
Tesla
C BMW
Ferrari
Mini
Rolls-Royce
D
Porsche
From factory cable
harness
Ensure that all components are correctly connected in polarity, i.e. plus to plus and minus to
minus. The positive leads of the loudspeaker system are marked red.
Insert the enclosed inlay A, cut o the plug
of the enclosed connection cable and connect it to the
amplier.
Option b:
Universal connection, e.g. in active
applications
Insert the enclosed inlay A and plug in
the enclosed connection cable. Then connect it to the
optional car-specic wiring harness.
Option a: Universal connection via optional car- specic
wiring harness, e.g. in active applications
Connection cable
CWK M-225CC
(included)
Connection cable
CWK M-225CC
(included)
Optional car-
specic wiring
harness
Optional
or
Wiring options for audio playback
6
ø3.09”
ø78.5mm
1.18”
30.1mm
1.34”
34.1mm
1.40”
35.6mm
2.74”
69.5mm
4.33”
110.0mm
4.13”
105.0mm
5.08”
129.1mm
3.63”
92.3mm
ø3.25”
ø82.5mm
ø3.18”
ø80.7mm
Speaker with assembled universal
MULTI.1
Speaker with assembled universal
MULTI.2
Speaker without and
without grille
Dimensions
7
Technical data
Ci5 M80FM-D3 CTR
Power RMS / Max. P 90 / 135 Watts
Impedance Z 2 x 3 Ω
DC resistance Re 3.1 Ω
Frequency response 200 Hz - 16,000 Hz
Resonance frequency
Fs
175 Hz
Mechanical Q factor Qms
4.29
Electrical Q factor Qes
2.15
Total Q factor Qts
1.43
Compliance Cms
260 μm/N
Equivalent air volume Vas
0.44 L
Force factor B*I
2.24 Tm
Sensitivity SPL
87 dB @ 2.83V / 1m
83 dB @ 1W / 1m
Cone area Sd 36 cm²
Moving mass Mms 3.19 g
Cone material
Silicon coated paper cone
Mechanical resistance Rms
0.82 kg/s
Voice coil diameter Ø
21 mm
Voice coil winding height
7.3 mm
Max. linear excursion Xlin +/- 2.5 mm
Max. mechanical excursion Xmax +/- 4.5 mm
Features
terminal, powerful push-pull neodymium
magnet system and
The adaptor rings enable acoustically optimized and professional speaker integration in vehicles. Below are
the included adaptor rings and compatible car brands.
For additional vehicle-specic variants, please contact your retailer or visit www.audiotec-scher.com/compose for the
most up-to-date overview of available adaptors.
MULTI.1 & MULTI.2
Chrysler
Ferrari
Ford
Jaguar
Land Rover
Lexus
Mazda
Mercedes-Benz
Porsche
Tesla
Toyota
Volvo
and universal use
FlexMount car-specic adaptors
AUDIOTEC FISCHER GmbH
Hünegräben 26 - 28
57392 Schmallenberg
Germany
Made in China
Legal information
Warranty disclaimer
The warranty service is based on the statutory regulations. Defects and damage caused by overload or improper handling
are excluded from the warranty service. Any return can only take place following prior consultation, in the original packag-
ing together with a detailed description of the error and a valid proof of purchase.
Technical modications, misprints and errors excepted! For damages on the vehicle and the device, caused by handling
errors of the device, we cannot accept liability.
Correct disposal of this product
This symbol means the product must not be discarded as household waste, and should be delivered to an
appropriate collection facility for recycling. Follow local rules and never dispose of the product with normal
household waste. Correct disposal of old products helps prevent negative consequences for the environment
and human health.
Regulatory notes
This product has been issued a CE marking. This means that the device is certied for use in vehicles within
the European Union (EU).
This product has been issued a UKCA marking. This means that the device is certied for use in vehicles
within the United Kingdom.
This product has been issued an EAC marking. This means that the device is certied for use in vehicles within
the Eurasian Customs Union.
