JEHNERT SOUND DESIGN 46149 User manual

SoundSound
D E S I G N
JEHNERT
BMW Z 3 Roadster / Coupé / M 3
Guarantee
2003/by.AJ/FH - 15 -
Installation instructions
install.instr. 75149/FH04/03
part-no. 75149
Jehnert Sound Design
development and
production of
Car-Audio-Systems
Heinrich-Hertz-Str. 11
70794 Filderstadt
Tel.: [phone]
Fax: [phone]
e-mail: [email protected]
www.jehnert.com
We grant a manufacturers guarantee of 2 years starting from the date of purchase
of the door panels or sound system from the dealer.
Within this guarantee period to our choice we either repair or replace free of
charge all defects due to material or workmanship.
Exempt from this guarantee are damages due to improper use, wear and tear or
damages which have to be led back on wear or interventions by third parties.
The guarantee does not cover subsequent damages or such defects that only
insignificantly impair the value or the usability of the panels/sound system.
The guarantee does not cover damages due to external influences.
Panels with additional or wrong assembly drill holes cannot be returned.
These are damages to the panel which cannot be repaired again.
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Production of
Car-Audio-Systems
Porsche Str. 15
70794 Filderstadt
Tel. [phone] / 9 56 99-0
Fax [phone]
e-mail: [email protected]
www.jehnert.com
46149

Packing list ..........................................................................
1. Disassembly of the door lining...............................................
2. Installation tweeter ..............................................................
3. Panel alignment / reference points ........................................
4. Handling of door lining / Panel installation - Fastening ...........
5. Loudspeaker cables .............................................................
6. Insulation of the door lining / car doors .................................
7. Installation of the door lining ................................................
8. Crossover circuit - Speaker connection ..................................
Loudspeaker wiring diagram .................................................
9. Installation of the speaker-grills .............................................
Technical information ...........................................................
Service / fault diagnoses .......................................................
Guarantee ...........................................................................
Packing list ..........................................................................
1. Disassembly of the door lining...............................................
2. Installation tweeter ..............................................................
3. Panel alignment / reference points ........................................
4. Handling of door lining / Panel installation - Fastening ...........
5. Loudspeaker cables .............................................................
6. Insulation of the door lining / car doors .................................
7. Installation of the door lining ................................................
8. Crossover circuit - Speaker connection ..................................
Loudspeaker wiring diagram .................................................
9. Installation of the speaker-grills .............................................
Technical information ...........................................................
Service / fault diagnoses .......................................................
Guarantee ...........................................................................
Steffen Kretzschmar
Saddlery / Completion
Seite
2
3
4
5
6
7
8
9
10
11
12
13
14
15
75149 - BMW Z 3 - 14 - © JEHNERT SOUND DESIGN75149 - BMW Z 3 - 1 - © JEHNERT SOUND DESIGN
Contents
Particularly important notes contain the following remarks:
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Please follow the installation instructions
“step by step”
and check the package contents
Technical questions Hotline: [phone]
We thank you for your support!
Mirko Schwarz
Development
It is our pleasure to help you!
Dear customer,
We have taken great care to explain the procedures in our installation instructions
more detailed and “step by step”.
Your tips and suggestions help us for the future to eliminate uncertainties and
misinterpretation. Therefore, please inform us. what you would like to be improved
or what we should still change.
Marc Sitter
Service
Marc Sitter
Service
The following notes serve to help troubleshoot and eliminate faults or malfunctions
on your own. If the following measures are not effective, please call us.
What can it be if ... possible cause/ solution
..it doesn’t sound right. wrong polarity on the subwoofers ( page 10)
crosover circuit attached wrong ( page 11)
Doorlining and moisture protection foil
not cut out ( page 7+ 9)
ampilifier doesn’t have enough power( page 13)
amplifier connection
...it doesn’t fit correctly. door panel customization ( page 6)
installation of the panels on the door lining (page 7)
.....grills do not hold. observe notes on page 12!
vibrations insulation, see notes on page 8
Self-help and fault diagnosis
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46149 - BMW Z3

Packing unit Check list
door panel, covered (right / left) 2
Speaker grill, covered (right / left) 2
Tweeter 26 mm (with perforated sheet metal,6.Ktn.Screw M4x8,Washer ø 12mm) 2
Midrange 100 mm Q (each mounted on the panel with 4 Sheet metal-screws) 2
Woofer 160 mm (each mounted on the panel with 2 Sheet metal-screws) 8
Crossover (right / left) 2
standard cables for subwoofer (right / left) 2
Hardware bag:
 Hexagon head screws, M 4 x 30 6
 Hexagon head screws, M 4 x 40 4
 Hexagon head screws, M 4 x 50 6
 Spax screws 5,0 x 70 4
 Spax screws 5,0 x 80 2
 Hex nut M 4 16
 Washer Ø 20mm (incl. 4x as spacer for Velcro fastener)18
 Washer Ø 12mm 8
 Sheet metal screws, black 3,9x13 (f. woofer) 16
 Velcro strip à 2,5 cm (reserve) 4
Preassembled hardware:
 Velcro fastener plus strips 14
 Sheet metal screws, black 3,9 x 13 (f. woofer) 16
 Sheet metal screws, black 3,5 x 13 (f. midrange) 8
 Sheet metal screws, black 3,5 x 13 (f. Velcro fastener) 14
The product was carefully packed and checked for its completeness. If you find anything missing, damaged or
defective, please notice our guarantee services on the back of these assembly instructions.
Hardware bag:
Packing unit Check list
door panel, covered (right / left) 2
Speaker grill, covered (right / left) 2
Tweeter 26 mm (with perforated sheet metal,6.Ktn.Screw M4x8,Washer ø 12mm) 2
Midrange 100 mm Q (each mounted on the panel with 4 Sheet metal-screws) 2
Woofer 160 mm (each mounted on the panel with 2 Sheet metal-screws) 8
Crossover (right / left) 2
standard cables for subwoofer (right / left) 2
Hardware bag:
 Hexagon head screws, M 4 x 30 6
 Hexagon head screws, M 4 x 40 4
 Hexagon head screws, M 4 x 50 6
 Spax screws 5,0 x 70 4
 Spax screws 5,0 x 80 2
 Hex nut M 4 16
 Washer Ø 20mm (incl. 4x as spacer for Velcro fastener)18
 Washer Ø 12mm 8
 Sheet metal screws, black 3,9x13 (f. woofer) 16
 Velcro strip à 2,5 cm (reserve) 4
Preassembled hardware:
 Velcro fastener plus strips 14
 Sheet metal screws, black 3,9 x 13 (f. woofer) 16
 Sheet metal screws, black 3,5 x 13 (f. midrange) 8
 Sheet metal screws, black 3,5 x 13 (f. Velcro fastener) 14
The product was carefully packed and checked for its completeness. If you find anything missing, damaged or
defective, please notice our guarantee services on the back of these assembly instructions.
Hardware bag:
Packing list 75149
75149 - BMW Z 3 - 13 - © JEHNERT SOUND DESIGN 75149 - BMW Z 3 - 2 - © JEHNERT SOUND DESIGN
Technical information
Equipment: electric window control
Model/ year : Roadster / Coupé / M3
Insulation: is absolutely necessary !
Note about setting: To obtain optimal stereoscopic sound, all settings
on the radio (bass, treble, loudness etc) should be
set to zero or neutral.
Recommended
amplifier power : from 2x 200 - 360 Watt RMS / 4 Ohm
Metal cutwork : not necessary
Cut-outs for loudspeaker/ 4 x 144mm (max.outer dimensions subwoofer 165 mm)
each side (max.installation depth subwoofer 65 mm)
DIN-Euro-Norm-standard basket ø6“made it fit
1 x 92mm (max.outer dimensions midrange 100 mm)
(max.installation depth midrange 50 mm)
Sound-System: 3-ways
4 x 160 mm subwoofer/ side
1 x 100 mm midrange / side
1 x 26 mm tweeter / side
car-customized crossover network
max.continuous Watt/RMS: 2 x 300/500Watt
car specific frequency range: 49-22.000 Hz
Total impedance: 4 Ohm
Time for Installation car hifi-specialist: 3,5 hours
We reserve the right to make technical changes, as well as development.
Packing unit Check list
door panel, covered (right / left) 2
Speaker grill, covered (right / left) 2
Tweeter 26 mm (with perforated sheet metal,6.Ktn.Screw M4x8,Washer ø 12mm) 2
Midrange 100 mm Q (each mounted on the panel with 4 Sheet metal-screws) 2
Woofer 160 mm (each mounted on the panel with 2 Sheet metal-screws) 8
Crossover (right / left) 2
standard cables for subwoofer (right / left) 2
Hardware bag:
 Hexagon head screws, M 4 x 30 6
 Hexagon head screws, M 4 x 40 4
 Hexagon head screws, M 4 x 50 6
 Spax screws 5,0 x 70 4
 Spax screws 5,0 x 80 2
 Hex nut M 4 16
 Washer Ø 20mm (incl. 4x as spacer for Velcro fastener)18
 Washer Ø 12mm 8
 Sheet metal screws, black 3,9x13 (f. woofer) 16
 Velcro strip à 2,5 cm (reserve) 4
Preassembled hardware:
 Velcro fastener plus strips 14
 Sheet metal screws, black 3,9 x 13 (f. woofer) 16
 Sheet metal screws, black 3,5 x 13 (f. midrange) 8
 Sheet metal screws, black 3,5 x 13 (f. Velcro fastener) 14
The product was carefully packed and checked for its completeness. If you find anything missing, damaged or
defective, please notice our guarantee services on the back of these assembly instructions.
Hardware bag:
Packing unit Check list
door panel, covered (right / left) 2
Speaker grill, covered (right / left) 2
Tweeter 26 mm (with perforated sheet metal,6.Ktn.Screw M4x8,Washer ø 12mm) 2
Midrange 100 mm Q (each mounted on the panel with 4 Sheet metal-screws) 2
Woofer 160 mm (each mounted on the panel with 2 Sheet metal-screws) 8
Crossover (right / left) 2
standard cables for subwoofer (right / left) 2
Hardware bag:
 Hexagon head screws, M 4 x 30 6
 Hexagon head screws, M 4 x 40 4
 Hexagon head screws, M 4 x 50 6
 Spax screws 5,0 x 70 4
 Spax screws 5,0 x 80 2
 Hex nut M 4 16
 Washer Ø 20mm (incl. 4x as spacer for Velcro fastener)18
 Washer Ø 12mm 8
 Sheet metal screws, black 3,9x13 (f. woofer) 16
 Velcro strip à 2,5 cm (reserve) 4
Preassembled hardware:
 Velcro fastener plus strips 14
 Sheet metal screws, black 3,9 x 13 (f. woofer) 16
 Sheet metal screws, black 3,5 x 13 (f. midrange) 8
 Sheet metal screws, black 3,5 x 13 (f. Velcro fastener) 14
The product was carefully packed and checked for its completeness. If you find anything missing, damaged or
defective, please notice our guarantee services on the back of these assembly instructions.
Hardware bag:
Packing list 75149
75149 - BMW Z 3 - 13 - © JEHNERT SOUND DESIGN 75149 - BMW Z 3 - 2 - © JEHNERT SOUND DESIGN
Technical information
Equipment: electric window control
Model/ year : Roadster / Coupé / M3
Insulation: is absolutely necessary !
Note about setting: To obtain optimal stereoscopic sound, all settings
on the radio (bass, treble, loudness etc) should be
set to zero or neutral.
Recommended
amplifier power : from 2x 200 - 360 Watt RMS / 4 Ohm
Metal cutwork : not necessary
Cut-outs for loudspeaker/ 4 x 144mm (max.outer dimensions subwoofer 165 mm)
each side (max.installation depth subwoofer 65 mm)
DIN-Euro-Norm-standard basket ø6“made it fit
1 x 92mm (max.outer dimensions midrange 100 mm)
(max.installation depth midrange 50 mm)
Sound-System: 3-ways
4 x 160 mm subwoofer/ side
1 x 100 mm midrange / side
1 x 26 mm tweeter / side
car-customized crossover network
max.continuous Watt/RMS: 2 x 300/500Watt
car specific frequency range: 49-22.000 Hz
Total impedance: 4 Ohm
Time for Installation car hifi-specialist: 3,5 hours
We reserve the right to make technical changes, as well as development.
(with perforated sheet metal, hex nut M4, washer Ø 12 mm)
4
165 4
46149 - BMW Z3

9.1. Precisely align and carefully press grill into the Velcro fasteners.
The Velcro fastener makes a crackling sound
when it is closed correctly.
9.1. Precisely align and carefully press grill into the Velcro fasteners.
The Velcro fastener makes a crackling sound
when it is closed correctly.
Removing the grills:
The Velcro fasteners stick together very strongly!
The grills can be removed anytime by carefully lifting them off.
Please, avoid any way of forceful yanking at the grills.
It could break!
9.3.
9.2. Our Tip:
If the panel cannot be pressed on completely at some points. . .
Cause: the special form at these points and the resulting differences in
material cross section of the grill.
Solution: the distance can be levelled out with spacers 3 under the
Velcro disc.
(Spacers included with the screw kit)
1. roll down window completely.
2. carefully push the switch of the rear-view mirror (driver’s side) and the grill on
the door handle (co-passenger’s side) out of the catch.
Remove the screw underneath and disconnect the cables.
3. for door-airbags: push off the airbag grill (B).
Unscrew cross head screw underneath
4. remove the plastic frame round the door latch lever (C) to the door hinge
and take it away
5. carefully remove the plastic clips on the door-lining edges and move the
door-lining forward away from the inner door metal
IMPORTANT: Please, avoid any way of forceful yanking at the door lining.
It could break!
A = switch for rear mirror
(driver’s side)
6. remove the Bowden pull wire of the door latch lever
7. disconnect the original loudspeaker plugs of the tweeter.
B = airbag grill C = door latch lever
75149 - BMW Z 3 - 3 - © JEHNERT SOUND DESIGN 75149 - BMW Z 3 - 12 - © JEHNERT SOUND DESIGN
1 . Disassembly of the door lining
A
B
C
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9. Installation of the speaker’s grill :
grill
2 self-adhesive Velcro-strip
1 Velcro fastener
3 Washer M4 ø20 as spacer
doorpanel
Remove the Torx-screw underneath and disconnect the cables.
Unscrew Torx-screw underneath.
46149 - BMW Z3

Loudspeaker wiring diagram
Connect all loudspeakers and crossover circuits:
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JEHNERT
SoundSound
Midrange
Speaker
MADE IN GERMANY
2.1. dismount factory installed tweeter
2.2. install JEHNERT tweeter in the large mount opening beside the factory
installed mount. Screw in washers and hexagon head screws on the
perforated sheet metal and the original fastening points.
2.3. Connect tweeter and lead cable (1,5 - 4 mm 2) to the cross-over
(length: crossover mounted behind the panel or alternatively under the
dashboard - see page 10) .
tweeter mount
eg. with
perforated sheet metal
fig: backside of the doorlining
factory installed mount
will not be used
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SoundSound
Tweeter
Speaker
MADE INGERMANY
75149 - BMW Z 3 - 11 - © JEHNERT SOUND DESIGN
2. installation of tweeter
75149 - BMW Z 3 - 4 - © JEHNERT SOUND DESIGN
mount of tweeter
Circuit diagram of 3-way crossover / 4x subwoofer
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JEHNERT
SoundSound
WOOFER
Speaker
MADE IN GERMANY
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JEHNERT
SoundSound
WOOFER
Speaker
MADE IN GERMANY
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SoundSound
WOOFER
Speaker
MADE IN GERMANY
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SoundSound
WOOFER
Speaker
MADE IN GERMANY
tweeterwoofer
SoundSound
D E S I G N
JEHNERT
midrangeinput
3-way crossover circuit
BMW Z 3 - 751 49
= set of cables supplied with
amplifier
from 200 Watt RMS / 4 Ohm
recommended power
hex nut M4 on the
46149 - BMW Z3

3.1. Place the door lining on a plane surface.
3.2. Dismount the loudspeakers attached to the panel for transport protection.
Retain the screws for later assembly.
Place the panel without loudspeakers and grill on the door lining and align it:
3.3. remove factory installed tray acc. to fig
line (A) by means of a compass saw.
check for precise fitting and
remove overlapping parts of the
door-lining
All cutting edges of the panel
must fit to the door lining snugly
all around without gap
✍
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8. Crossover circuit - Speaker connection
8.3. Insert subwoofer and midrange.
8.4. connect all loudspeakers to the crossover circuit with the included
standard cables for subwoofer to the crossover circuit:
parallel wiring see diagram on page 11.
Notice: You should check the polarity of all subwoofers
before connecting them to the crossover circuit
with a 9 volt battery:
pole of the crossover circuit input to of a 9 Volt battery
pole of the crossover circuit input to of a 9 Volt battery
All subwoofers must move uniformly!
Wrong polarity of a subwoofer can totally
equalize the bass sound!
Hochtöner
Tieftöner
Sound
Sound
DESIGN
JEHNERT
Mitteltöner
Eingang
3-WegefahrzeugspezifischeFrequenzweiche
GolfIV
75149 - BMW Z 3 - 10 - © JEHNERT SOUND DESIGN75149 - BMW Z 3 - 5- © JEHNERT SOUND DESIGN
3 . Panel alignment
Reference points for fitting:
Only precise alignment of the panel with the door
lining warrants optimal fit.
3.4. Reference line 1:
the lateral front panel edges and the upper panel edge has to be aligned flush
to the inlet edge of the door lining
3.5.
Reference line 2:
the lower edge of the panel is parallel to the lower edge of the door lining.
The back upper panel edge is flush under the extending part of the door handle.
3.6.
Reference line 3:
the short lateral panel edge (on the midrange) has to be aligned flush to the
door handle ( see fig.).
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✚ ✚
Reference line 1:
lateral and upper panel
edges are flush to the inlet
edges of the door lining
Final inspection after panel installation:
please check all functions of the operating elements such
as seat adjustment, opening of the glove box,
window winder etc.
8.1. precable crossovers - see fig. page 11.
8.2. installation of crossover either
•behind the dashboard
or alternatively
•behind the panel - between the two front woofers and the above midrange
- without housing, covered with foamed plastic*, insert the crossover and
check for precise fit
*Important: protect the sheet bar against humidity and observe that the
sheet bar does not touch any metal parts –danger of short circuit!
A= remove tray
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A
Reference line 3:
door handle flush
to panel edge
Reference line 2:
lower panel edge and lower
edge of door lining are
parallel
46149 - BMW Z3

7.2. put the door-lining into the upper sealing of the car door
tip: grease the upper door sealing with a residue-free lubricant before
7.3. fit it in contrary order of succession as described on page no. 3
7.4.
important: Spax screws 9-11 with washers as spacer:
carefully tighten the screws with ø12mm washer, each from the front
side of the door lining to the funnel shaped fastening points 9-11 of the
panel, through the door lining directly to the door metal. The washer
serves as an important spacer and prevents from screwing in too deep
the door metal.
1. use the precisely aligned panel as template in order to mark fastening
points 1- 8:
•mark the fastening points 1-8 (do not use marks A + B, see fig. below):
use a thin awl to set the marks on the door-lining.
2. draw the speaker cut-outs on the
door-lining.
3. remove the panel again.
Cut out the speakers’outlines marked
before by means of a compass saw.
(see fig.)
4. use a 6mm drill for the screws according
to the marks set before
Important –fastening points 1 + 6:
as the door lining is padded at this part first cut out these 2 points
with a carpet knife –material may be damaged.
5.
carefully screw in the M4 screws , supplied with. Please keep exactly to the
succession 1-8 ( see fig.)
. Affix the door build to the door-lining, screw all M4
screws only hand-tight.
Secure all screws with the washers and nuts.
only fastening point 2 : Washer ø12mm
fastening point 1, 3 - 8 : Washer ø20mm
6. check again for precise fitting and tighten screws.
All cutting edges of the panel must fit to the door lining snugly
all around without gap
7.5. cut out the moisture protection foil (u-form) and stabilize the lateral cutting
edges in order to avoid vibration noise ( e.g. use a packing tape)
7.1. Check up length of the screws and bolts:
in order to prevent damages of mechanic parts of the car doors, please check
once again the length of all bolts and screws on the back side of the door
lining! No touch with any mechanic parts of the car doors !
(please shorten if necessary).
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7. installation of the door-lining onto the the car doors
cut out for
woofer
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cut out for
woofer
cut out for
midrange
4. Handling of door lining / Panel installation - Fastening
75149 - BMW Z 3 - 9 - © JEHNERT SOUND DESIGN 75149 - BMW Z 3 - 6 - © JEHNERT SOUND DESIGN
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Spax-Screws 9-11 :
from above –screw in carefully with washer 12mm into
the funnel shaped fastening points in the panel , screw,
washer as spacer, funnel shaped recess in the panel
fastening point 9-11: = funnel shaped fastening points for screws, tighten the screws
on final installation of the complete door lining (see page no. 9).
Washer M4 ø12 as spacer
Spax-Screw
funnel shaped fastening point in
the panel
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9
10
11
Spax 5,0 x 70
Spax 5,0 x 80
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Spax 5,0 x 70
1 =
M4 x 30
2 = M 4 x 50
washer= ø12mm
9
10
11
(A)
(B)
do not use
fastening points (A) + (B)
6 =
M4 x 40
5+4 =
M4 x 30
3 =
M4 x 40
7 =
M4 x 50
8 =
M4 x 50
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46149 - BMW Z3

6. insulation of the door lining
Important tip:
the use of 2x16mm mid-woofer /side may cause vibrations which lead to
annoying rattle noises in the car door
some helpful tips:
•use the self-adhesive insulation fleece (art.no.: 27000) or a foam material for
the backside of the door lining ( see fig. above ) or
•stabilize the backside of the door lining by means of a special material
(Glass Fibre Filler or stiffening material)
important: keep the cut-outs for the door-airbags and speakers open
•affix the *backside of the inner door metal with self-adhesive asphalt mats (see fig. * )
•by knocking on the car door, vibrations caused by mechanic parts (e.g. Bowden pull wire etc. )
and wiring harness may be found out. Cover these parts with foamed material, felt or
something like that
•cut off overlapping cable tie (rattle noise)
•adhere felt or foamed material under the original wiring harness
!
Important:
No insulation material behind
- loudspeaker
- doorbolts
- (fig. A): drill a hole for the
installation clip
fig.: backside of the door lining –insulation with our article no.: 27000
moisture protection foil
front side of
inner door metal
* door metal outside
= back side of the
inner door metal
attention –danger !!
No insulation behind the
side-airbags (fig. B)
75149 - BMW Z 3 - 7 - © JEHNERT SOUND DESIGN 75149 - BMW Z 3 - 8 - © JEHNERT SOUND DESIGN
5. Loudspeaker cables
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5.1. carefully remove the moisture protection foil
5.2.
Important tips against vibration-noise (s.page.8)
It is absolutely necessary to insulate the car doors
5.3. install cables:
installation of crossover - behind the door panel (see page 10):
lead 1 speaker cable (1,5 - 4mm 2) from amplifier through door
pin/ wiring harness into the car door.
TIP: •close the car door
•open the boot / hood
•door pillar –passage for plastic cable : loosen the upper screw
•open the car door
•door pillar- passage for plastic cable: loosen the lower screw
Or alternatively:
Installation of crossover under the dashboard (see page no.10):
Lead 3 speaker cable (1,5 - 4mm 2) from amplifier for woofers
midrange and tweeter into the car door.
5.4. reinstall the moisture protection foil
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46149 - BMW Z3

6. insulation of the door lining
Important tip:
the use of 2x16mm mid-woofer /side may cause vibrations which lead to
annoying rattle noises in the car door
some helpful tips:
•use the self-adhesive insulation fleece (art.no.: 27000) or a foam material for
the backside of the door lining ( see fig. above ) or
•stabilize the backside of the door lining by means of a special material
(Glass Fibre Filler or stiffening material)
important: keep the cut-outs for the door-airbags and speakers open
•affix the *backside of the inner door metal with self-adhesive asphalt mats (see fig. * )
•by knocking on the car door, vibrations caused by mechanic parts (e.g. Bowden pull wire etc. )
and wiring harness may be found out. Cover these parts with foamed material, felt or
something like that
•cut off overlapping cable tie (rattle noise)
•adhere felt or foamed material under the original wiring harness
!
Important:
No insulation material behind
- loudspeaker
- doorbolts
- (fig. A): drill a hole for the
installation clip
fig.: backside of the door lining –insulation with our article no.: 27000
moisture protection foil
front side of
inner door metal
* door metal outside
= back side of the
inner door metal
attention –danger !!
No insulation behind the
side-airbags (fig. B)
75149 - BMW Z 3 - 7 - © JEHNERT SOUND DESIGN 75149 - BMW Z 3 - 8 - © JEHNERT SOUND DESIGN
5. Loudspeaker cables
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5.1. carefully remove the moisture protection foil
5.2.
Important tips against vibration-noise (s.page.8)
It is absolutely necessary to insulate the car doors
5.3. install cables:
installation of crossover - behind the door panel (see page 10):
lead 1 speaker cable (1,5 - 4mm 2) from amplifier through door
pin/ wiring harness into the car door.
TIP: •close the car door
•open the boot / hood
•door pillar –passage for plastic cable : loosen the upper screw
•open the car door
•door pillar- passage for plastic cable: loosen the lower screw
Or alternatively:
Installation of crossover under the dashboard (see page no.10):
Lead 3 speaker cable (1,5 - 4mm 2) from amplifier for woofers
midrange and tweeter into the car door.
5.4. reinstall the moisture protection foil
�
for
2x165mm
46149 - BMW Z3

7.2. put the door-lining into the upper sealing of the car door
tip: grease the upper door sealing with a residue-free lubricant before
7.3. fit it in contrary order of succession as described on page no. 3
7.4.
important: Spax screws 9-11 with washers as spacer:
carefully tighten the screws with ø12mm washer, each from the front
side of the door lining to the funnel shaped fastening points 9-11 of the
panel, through the door lining directly to the door metal. The washer
serves as an important spacer and prevents from screwing in too deep
the door metal.
1. use the precisely aligned panel as template in order to mark fastening
points 1- 8:
•mark the fastening points 1-8 (do not use marks A + B, see fig. below):
use a thin awl to set the marks on the door-lining.
2. draw the speaker cut-outs on the
door-lining.
3. remove the panel again.
Cut out the speakers’outlines marked
before by means of a compass saw.
(see fig.)
4. use a 6mm drill for the screws according
to the marks set before
Important –fastening points 1 + 6:
as the door lining is padded at this part first cut out these 2 points
with a carpet knife –material may be damaged.
5.
carefully screw in the M4 screws , supplied with. Please keep exactly to the
succession 1-8 ( see fig.)
. Affix the door build to the door-lining, screw all M4
screws only hand-tight.
Secure all screws with the washers and nuts.
only fastening point 2 : Washer ø12mm
fastening point 1, 3 - 8 : Washer ø20mm
6. check again for precise fitting and tighten screws.
All cutting edges of the panel must fit to the door lining snugly
all around without gap
7.5. cut out the moisture protection foil (u-form) and stabilize the lateral cutting
edges in order to avoid vibration noise ( e.g. use a packing tape)
7.1. Check up length of the screws and bolts:
in order to prevent damages of mechanic parts of the car doors, please check
once again the length of all bolts and screws on the back side of the door
lining! No touch with any mechanic parts of the car doors !
(please shorten if necessary).
�
7. installation of the door-lining onto the the car doors
cut out for
woofer
✍

cut out for
woofer
cut out for
midrange
4. Handling of door lining / Panel installation - Fastening
75149 - BMW Z 3 - 9 - © JEHNERT SOUND DESIGN 75149 - BMW Z 3 - 6 - © JEHNERT SOUND DESIGN

Spax-Screws 9-11 :
from above –screw in carefully with washer 12mm into
the funnel shaped fastening points in the panel , screw,
washer as spacer, funnel shaped recess in the panel
fastening point 9-11: = funnel shaped fastening points for screws, tighten the screws
on final installation of the complete door lining (see page no. 9).
Washer M4 ø12 as spacer
Spax-Screw
funnel shaped fastening point in
the panel
✍
�
�
�
9
10
11
Spax 5,0 x 70
Spax 5,0 x 80




Spax 5,0 x 70
1 =
M4 x 30
2 = M 4 x 50
washer= ø12mm
9
10
11
(A)
(B)
do not use
fastening points (A) + (B)
6 =
M4 x 40
5+4 =
M4 x 30
3 =
M4 x 40
7 =
M4 x 50
8 =
M4 x 50
54
46149 - BMW Z3

3.1. Place the door lining on a plane surface.
3.2. Dismount the loudspeakers attached to the panel for transport protection.
Retain the screws for later assembly.
Place the panel without loudspeakers and grill on the door lining and align it:
3.3. remove factory installed tray acc. to fig
line (A) by means of a compass saw.
check for precise fitting and
remove overlapping parts of the
door-lining
All cutting edges of the panel
must fit to the door lining snugly
all around without gap
✍

8. Crossover circuit - Speaker connection
8.3. Insert subwoofer and midrange.
8.4. connect all loudspeakers to the crossover circuit with the included
standard cables for subwoofer to the crossover circuit:
parallel wiring see diagram on page 11.
Notice: You should check the polarity of all subwoofers
before connecting them to the crossover circuit
with a 9 volt battery:
pole of the crossover circuit input to of a 9 Volt battery
pole of the crossover circuit input to of a 9 Volt battery
All subwoofers must move uniformly!
Wrong polarity of a subwoofer can totally
equalize the bass sound!
Hochtöner
Tieftöner
Sound
Sound
DESIGN
JEHNERT
Mitteltöner
Eingang
3-WegefahrzeugspezifischeFrequenzweiche
GolfIV
75149 - BMW Z 3 - 10 - © JEHNERT SOUND DESIGN75149 - BMW Z 3 - 5- © JEHNERT SOUND DESIGN
3 . Panel alignment
Reference points for fitting:
Only precise alignment of the panel with the door
lining warrants optimal fit.
3.4. Reference line 1:
the lateral front panel edges and the upper panel edge has to be aligned flush
to the inlet edge of the door lining
3.5.
Reference line 2:
the lower edge of the panel is parallel to the lower edge of the door lining.
The back upper panel edge is flush under the extending part of the door handle.
3.6.
Reference line 3:
the short lateral panel edge (on the midrange) has to be aligned flush to the
door handle ( see fig.).
�
�
�
�
✚ ✚
Reference line 1:
lateral and upper panel
edges are flush to the inlet
edges of the door lining
Final inspection after panel installation:
please check all functions of the operating elements such
as seat adjustment, opening of the glove box,
window winder etc.
8.1. precable crossovers - see fig. page 11.
8.2. installation of crossover either
•behind the dashboard
or alternatively
•behind the panel - between the two front woofers and the above midrange
- without housing, covered with foamed plastic*, insert the crossover and
check for precise fit
*Important: protect the sheet bar against humidity and observe that the
sheet bar does not touch any metal parts –danger of short circuit!
A= remove tray
�
A
Reference line 3:
door handle flush
to panel edge
Reference line 2:
lower panel edge and lower
edge of door lining are
parallel
You should check the polarity of all woofers after having
connected them to the crossover circuit with a 9 volt battery
(input cable on the side of the amplier).
46149 - BMW Z3

Loudspeaker wiring diagram
Connect all loudspeakers and crossover circuits:
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SoundSound
Midrange
Speaker
MADE IN GERMANY
2.1. dismount factory installed tweeter
2.2. install JEHNERT tweeter in the large mount opening beside the factory
installed mount. Screw in washers and hexagon head screws on the
perforated sheet metal and the original fastening points.
2.3. Connect tweeter and lead cable (1,5 - 4 mm 2) to the cross-over
(length: crossover mounted behind the panel or alternatively under the
dashboard - see page 10) .
tweeter mount
eg. with
perforated sheet metal
fig: backside of the doorlining
factory installed mount
will not be used
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SoundSound
Tweeter
Speaker
MADE INGERMANY
75149 - BMW Z 3 - 11 - © JEHNERT SOUND DESIGN
2. installation of tweeter
75149 - BMW Z 3 - 4 - © JEHNERT SOUND DESIGN
mount of tweeter
Circuit diagram of 3-way crossover / 4x subwoofer
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SoundSound
WOOFER
Speaker
MADE IN GERMANY
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SoundSound
WOOFER
Speaker
MADE IN GERMANY
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SoundSound
WOOFER
Speaker
MADE IN GERMANY
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SoundSound
WOOFER
Speaker
MADE IN GERMANY
tweeterwoofer
SoundSound
D E S I G N
JEHNERT
midrangeinput
3-way crossover circuit
BMW Z 3 - 751 49
= set of cables supplied with
amplifier
from 200 Watt RMS / 4 Ohm
recommended power
46149 - BMW Z3

9.1. Precisely align and carefully press grill into the Velcro fasteners.
The Velcro fastener makes a crackling sound
when it is closed correctly.
9.1. Precisely align and carefully press grill into the Velcro fasteners.
The Velcro fastener makes a crackling sound
when it is closed correctly.
Removing the grills:
The Velcro fasteners stick together very strongly!
The grills can be removed anytime by carefully lifting them off.
Please, avoid any way of forceful yanking at the grills.
It could break!
9.3.
9.2. Our Tip:
If the panel cannot be pressed on completely at some points. . .
Cause: the special form at these points and the resulting differences in
material cross section of the grill.
Solution: the distance can be levelled out with spacers 3 under the
Velcro disc.
(Spacers included with the screw kit)
1. roll down window completely.
2. carefully push the switch of the rear-view mirror (driver’s side) and the grill on
the door handle (co-passenger’s side) out of the catch.
Remove the screw underneath and disconnect the cables.
3. for door-airbags: push off the airbag grill (B).
Unscrew cross head screw underneath
4. remove the plastic frame round the door latch lever (C) to the door hinge
and take it away
5. carefully remove the plastic clips on the door-lining edges and move the
door-lining forward away from the inner door metal
IMPORTANT: Please, avoid any way of forceful yanking at the door lining.
It could break!
A = switch for rear mirror
(driver’s side)
6. remove the Bowden pull wire of the door latch lever
7. disconnect the original loudspeaker plugs of the tweeter.
B = airbag grill C = door latch lever
75149 - BMW Z 3 - 3 - © JEHNERT SOUND DESIGN 75149 - BMW Z 3 - 12 - © JEHNERT SOUND DESIGN
1 . Disassembly of the door lining
A
B
C
�
�
9. Installation of the speaker’s grill :
grill
2 self-adhesive Velcro-strip
1 Velcro fastener
3 Washer M4 ø20 as spacer
doorpanel
46149 - BMW Z3

Packing unit Check list
door panel, covered (right / left) 2
Speaker grill, covered (right / left) 2
Tweeter 26 mm (with perforated sheet metal,6.Ktn.Screw M4x8,Washer ø 12mm) 2
Midrange 100 mm Q (each mounted on the panel with 4 Sheet metal-screws) 2
Woofer 160 mm (each mounted on the panel with 2 Sheet metal-screws) 8
Crossover (right / left) 2
standard cables for subwoofer (right / left) 2
Hardware bag:
 Hexagon head screws, M 4 x 30 6
 Hexagon head screws, M 4 x 40 4
 Hexagon head screws, M 4 x 50 6
 Spax screws 5,0 x 70 4
 Spax screws 5,0 x 80 2
 Hex nut M 4 16
 Washer Ø 20mm (incl. 4x as spacer for Velcro fastener)18
 Washer Ø 12mm 8
 Sheet metal screws, black 3,9x13 (f. woofer) 16
 Velcro strip à 2,5 cm (reserve) 4
Preassembled hardware:
 Velcro fastener plus strips 14
 Sheet metal screws, black 3,9 x 13 (f. woofer) 16
 Sheet metal screws, black 3,5 x 13 (f. midrange) 8
 Sheet metal screws, black 3,5 x 13 (f. Velcro fastener) 14
The product was carefully packed and checked for its completeness. If you find anything missing, damaged or
defective, please notice our guarantee services on the back of these assembly instructions.
Hardware bag:
Packing unit Check list
door panel, covered (right / left) 2
Speaker grill, covered (right / left) 2
Tweeter 26 mm (with perforated sheet metal,6.Ktn.Screw M4x8,Washer ø 12mm) 2
Midrange 100 mm Q (each mounted on the panel with 4 Sheet metal-screws) 2
Woofer 160 mm (each mounted on the panel with 2 Sheet metal-screws) 8
Crossover (right / left) 2
standard cables for subwoofer (right / left) 2
Hardware bag:
 Hexagon head screws, M 4 x 30 6
 Hexagon head screws, M 4 x 40 4
 Hexagon head screws, M 4 x 50 6
 Spax screws 5,0 x 70 4
 Spax screws 5,0 x 80 2
 Hex nut M 4 16
 Washer Ø 20mm (incl. 4x as spacer for Velcro fastener)18
 Washer Ø 12mm 8
 Sheet metal screws, black 3,9x13 (f. woofer) 16
 Velcro strip à 2,5 cm (reserve) 4
Preassembled hardware:
 Velcro fastener plus strips 14
 Sheet metal screws, black 3,9 x 13 (f. woofer) 16
 Sheet metal screws, black 3,5 x 13 (f. midrange) 8
 Sheet metal screws, black 3,5 x 13 (f. Velcro fastener) 14
The product was carefully packed and checked for its completeness. If you find anything missing, damaged or
defective, please notice our guarantee services on the back of these assembly instructions.
Hardware bag:
Packing list 75149
75149 - BMW Z 3 - 13 - © JEHNERT SOUND DESIGN 75149 - BMW Z 3 - 2 - © JEHNERT SOUND DESIGN
Technical information
Equipment: electric window control
Model/ year : Roadster / Coupé / M3
Insulation: is absolutely necessary !
Note about setting: To obtain optimal stereoscopic sound, all settings
on the radio (bass, treble, loudness etc) should be
set to zero or neutral.
Recommended
amplifier power : from 2x 200 - 360 Watt RMS / 4 Ohm
Metal cutwork : not necessary
Cut-outs for loudspeaker/ 4 x 144mm (max.outer dimensions subwoofer 165 mm)
each side (max.installation depth subwoofer 65 mm)
DIN-Euro-Norm-standard basket ø6“made it fit
1 x 92mm (max.outer dimensions midrange 100 mm)
(max.installation depth midrange 50 mm)
Sound-System: 3-ways
4 x 160 mm subwoofer/ side
1 x 100 mm midrange / side
1 x 26 mm tweeter / side
car-customized crossover network
max.continuous Watt/RMS: 2 x 300/500Watt
car specific frequency range: 49-22.000 Hz
Total impedance: 4 Ohm
Time for Installation car hifi-specialist: 3,5 hours
We reserve the right to make technical changes, as well as development.
2 x 165
2 x 150/200 Watt
47 - 22.000 Hz
2 Ohm
46149 - BMW Z3

Packing list ..........................................................................
1. Disassembly of the door lining...............................................
2. Installation tweeter ..............................................................
3. Panel alignment / reference points ........................................
4. Handling of door lining / Panel installation - Fastening ...........
5. Loudspeaker cables .............................................................
6. Insulation of the door lining / car doors .................................
7. Installation of the door lining ................................................
8. Crossover circuit - Speaker connection ..................................
Loudspeaker wiring diagram .................................................
9. Installation of the speaker-grills .............................................
Technical information ...........................................................
Service / fault diagnoses .......................................................
Guarantee ...........................................................................
Packing list ..........................................................................
1. Disassembly of the door lining...............................................
2. Installation tweeter ..............................................................
3. Panel alignment / reference points ........................................
4. Handling of door lining / Panel installation - Fastening ...........
5. Loudspeaker cables .............................................................
6. Insulation of the door lining / car doors .................................
7. Installation of the door lining ................................................
8. Crossover circuit - Speaker connection ..................................
Loudspeaker wiring diagram .................................................
9. Installation of the speaker-grills .............................................
Technical information ...........................................................
Service / fault diagnoses .......................................................
Guarantee ...........................................................................
Steffen Kretzschmar
Saddlery / Completion
Seite
2
3
4
5
6
7
8
9
10
11
12
13
14
15
75149 - BMW Z 3 - 14 - © JEHNERT SOUND DESIGN75149 - BMW Z 3 - 1 - © JEHNERT SOUND DESIGN
Contents
Particularly important notes contain the following remarks:
�
Please follow the installation instructions
“step by step”
and check the package contents
Technical questions Hotline: [phone]
We thank you for your support!
Mirko Schwarz
Development
It is our pleasure to help you!
Dear customer,
We have taken great care to explain the procedures in our installation instructions
more detailed and “step by step”.
Your tips and suggestions help us for the future to eliminate uncertainties and
misinterpretation. Therefore, please inform us. what you would like to be improved
or what we should still change.
Marc Sitter
Service
Marc Sitter
Service
The following notes serve to help troubleshoot and eliminate faults or malfunctions
on your own. If the following measures are not effective, please call us.
What can it be if ... possible cause/ solution
..it doesn’t sound right. wrong polarity on the subwoofers ( page 10)
crosover circuit attached wrong ( page 11)
Doorlining and moisture protection foil
not cut out ( page 7+ 9)
ampilifier doesn’t have enough power( page 13)
amplifier connection
...it doesn’t fit correctly. door panel customization ( page 6)
installation of the panels on the door lining (page 7)
.....grills do not hold. observe notes on page 12!
vibrations insulation, see notes on page 8
Self-help and fault diagnosis







Packing list ..........................................................................
1. Disassembly of the door lining...............................................
2. Installation tweeter ..............................................................
3. Panel alignment / reference points ........................................
4. Handling of door lining / Panel installation - Fastening ...........
5. Loudspeaker cables .............................................................
6. Insulation of the door lining / car doors .................................
7. Installation of the door lining ................................................
8. Crossover circuit - Speaker connection ..................................
Loudspeaker wiring diagram .................................................
9. Installation of the speaker-grills .............................................
Technical information ...........................................................
Service / fault diagnoses .......................................................
Guarantee ...........................................................................
Packing list ..........................................................................
1. Disassembly of the door lining...............................................
2. Installation tweeter ..............................................................
3. Panel alignment / reference points ........................................
4. Handling of door lining / Panel installation - Fastening ...........
5. Loudspeaker cables .............................................................
6. Insulation of the door lining / car doors .................................
7. Installation of the door lining ................................................
8. Crossover circuit - Speaker connection ..................................
Loudspeaker wiring diagram .................................................
9. Installation of the speaker-grills .............................................
Technical information ...........................................................
Service / fault diagnoses .......................................................
Guarantee ...........................................................................
Steffen Kretzschmar
Saddlery / Completion
Seite
2
3
4
5
6
7
8
9
10
11
12
13
14
15
75149 - BMW Z 3 - 14 - © JEHNERT SOUND DESIGN75149 - BMW Z 3 - 1 - © JEHNERT SOUND DESIGN
Contents
Particularly important notes contain the following remarks:
�
Please follow the installation instructions
“step by step”
and check the package contents
Technical questions Hotline: [phone]
We thank you for your support!
Mirko Schwarz
Development
It is our pleasure to help you!
Dear customer,
We have taken great care to explain the procedures in our installation instructions
more detailed and “step by step”.
Your tips and suggestions help us for the future to eliminate uncertainties and
misinterpretation. Therefore, please inform us. what you would like to be improved
or what we should still change.
Marc Sitter
Service
Marc Sitter
Service
The following notes serve to help troubleshoot and eliminate faults or malfunctions
on your own. If the following measures are not effective, please call us.
What can it be if ... possible cause/ solution
..it doesn’t sound right. wrong polarity on the subwoofers ( page 10)
crosover circuit attached wrong ( page 11)
Doorlining and moisture protection foil
not cut out ( page 7+ 9)
ampilifier doesn’t have enough power( page 13)
amplifier connection
...it doesn’t fit correctly. door panel customization ( page 6)
installation of the panels on the door lining (page 7)
.....grills do not hold. observe notes on page 12!
vibrations insulation, see notes on page 8
Self-help and fault diagnosis







Technical questions: Hotline [phone] / 9 56 99-0
46149 - BMW Z3

SoundSound
D E S I G N
JEHNERT
BMW Z 3 Roadster / Coupé / M 3
Guarantee
2003/by.AJ/FH - 15 -
Installation instructions
install.instr. 75149/FH04/03
part-no. 75149
Jehnert Sound Design
development and
production of
Car-Audio-Systems
Heinrich-Hertz-Str. 11
70794 Filderstadt
Tel.: [phone]
Fax: [phone]
e-mail: [email protected]
www.jehnert.com
We grant a manufacturers guarantee of 2 years starting from the date of purchase
of the door panels or sound system from the dealer.
Within this guarantee period to our choice we either repair or replace free of
charge all defects due to material or workmanship.
Exempt from this guarantee are damages due to improper use, wear and tear or
damages which have to be led back on wear or interventions by third parties.
The guarantee does not cover subsequent damages or such defects that only
insignificantly impair the value or the usability of the panels/sound system.
The guarantee does not cover damages due to external influences.
Panels with additional or wrong assembly drill holes cannot be returned.
These are damages to the panel which cannot be repaired again.
�