NV SERIES
SUBWOOFER MODELS
NV– SW12, NV– SW15
FUSION CULTURE
There’s no point doing something if no one notices. We’ve always believed
the way to make things happen is by getting noticed. From our product, to our
demo cars, to our events, FUSION is about making some noise.
Now you are ready. Step out of the shadows and announce you’ve arrived in
a world where the old limits are left behind. Where technology is creatively
combined with the latest in product innovation. Where new levels of
entertainment are delivered with outstanding performance and quality. Our
development team create distinctively different products; subwoofers, amplifiers,
speakers and peripherals that redefine what can be done in car audio.
Leave the old behind and push the limits of what can be achieved in car audio.
Make some noise.
For more information about FUSION Car Audio visit our website at www.fusionelectronics.com
or email technical@fusionelectronics.co.nz
NV SERIES
Embrace the ultimate in power. The NV Series is the pinnacle of modern car audio. State of the
art engineering ensures the most refined sound available is delivered at unparalleled levels. The
NV Series represents the finest work FUSION has achieved; designed and manufactured to the
highest level with no compromises.
To optimise your FUSION experience, we recommend you have your FUSION product installed
by an Authorised FUSION Dealer. Please read the warranty policy, keep your purchase receipt
and original packaging.
If after reading this manual you still have questions regarding this product, please contact
Technical Customer Services via email technical@fusionelectronics.co.nz
Rev 2.0
TABLE OF CONTENTS
• SUBWOOFER FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .pg 4
• SUBWOOFER THEILE/SMALL PARAMETERS. . . . . . . . . . . . . . . . . . . . . . pg 5
• SUBWOOFER DIMENSIONS NV-SW12 . . . . . . . . . . . . . . . . . . . . . . . . . . .pg 6
• SUBWOOFER DIMENSIONS NV-SW15 . . . . . . . . . . . . . . . . . . . . . . . . . . .pg 7
• ENCLOSURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .pg 8
• ENCLOSURE TEST CURVES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . pg 10
• TECH TIPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . pg 12
• TROUBLE SHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . pg 17
RECORD YOUR PRODUCT DETAILS HERE:
MODEL NUMBER _______________________________ DATE OF PURCHASE______________________
AFFIX RECEIPT HERE
WARNING! Audio Systems can produce sound levels over 135dB. Continuous exposure to sound
pressure levels over 100dB may cause permanent hearing loss!
Please watch for emergency vehicles as warning signals may not be heard. USE COMMON SENSE!
SUBWOOFER FEATURES
FUSION subwoofers are low frequency drivers capable of delivering extremely high bass levels
from small enclosures. In order to achieve the maximum performance from your new FUSION
Subwoofer, please use one of the recommended size enclosures that best suits your application.
Sealed and vented enclosure sizes can be found in this manual.
BASKET
NV Series Subwoofers feature a uniquely high pressure cast aluminium basket. Development
of the NV Series basket allows rigidity and style for any custom install. Finished in a protective
metal silver paint and detailed with FUSION green enhancements, the basket displays impressive
strength and style.
CONE ASSEMBLY
Development of the high performance pressed paper cone, creates a dynamic low bass
response and high power performance. The cone is finished in a dynamic silver with NV Series
super graphic, catering for style, strength and sound performance.
SPIDER
In order to keep the cone assembly balanced and linear, FUSION has used green poly cotton flat
spiders to reduce the mechanical distortion for better sound quality.
VOICE COIL
NV Series Subwoofers use dual 2 ohm configuration. This allows a multitude of wiring
combinations for your amplifier system (please see wiring configurations in this manual). NV
Series Subwoofers utilise high temperature, multi wound black aluminium voice coils.
EXTENDED POLE PIECE
Recognising that an increased linear magnetic field for the subwoofer encourages a better low
frequency response, FUSION has extended the internal pole piece to achieve this. The extended
pole piece also decreases distortion.
MOTOR STRUCTURE
The motor structure is constructed from the highest strontium magnetic material triple stacked
and capped with a diamond cut FUSION back plate, has enabled increased power handling and
larger excursion. With the additional venting holes we assure consistent booming.
SUBWOOFER THEILE/SMALL PARAMETERS
Subwoofer Parameters
NV-SW12
NV-SW15
MAX Power Rating (Watts)
2000
2500
RMS Power Rating (Watts)
1000
1100
Coil Height (Hvc) (mm)
40
40
Compliance (Cms) (uM/N)
180.8
146.18
Cone Area (Sd)
47.92
77.93
D.C.Coil Resistance (Re)
0.94
0.88
Electrical Q (Qes)
0.47
0.552
Force Factor (BL)
8.53
8.4
Free Air Resonance (Fs)
Frequency Response (Hz)
Gap Height (Hag) (mm)
26.38
23.62
21Hz – 500Hz
19Hz – 500Hz
10
10
Impedance (Nominal)
1
1
Inductance (Le) (mH)
0.5
0.51
Linear Excursion (X-Max Total)
40
40
Mechanical Excursion
15
15
Mechanical Q (Qms)
6.42
6.17
Moving Mass (Mms)
219.88
285.85
85
87
Total Loudspeaker Q (Qts)
0.44
0.506
VAS (Litres)
52.21
126.07
VAS (CuFt)
1.845
4.45
308
308
8
12
Sensitivity (dB)
Magnet Structure (Oz)
Total Loudspeaker Displacement (Litres)
DIMENSIONS
SUBW00FER
NV-SW12
333mm (13–1/8")
294mm (11–5/8")
333mm (13–1/8")
227mm (8–15/16")
204mm (8–1/16")
333mm (13–1/8")
DIMENSIONS
SUBWOOFER
NV-SW15
410mm (16 –1/8")
366mm (14–7/8")
246mm (9–11/16")
219mm (8–5/8")
410mm (16 –1/8")
410mm (16 –1/8")
ENCLOSURES
All enclosures include port and subwoofer displacement. All ports are circle aero ports unless
otherwise stated.
Ported Enclosures: A ported enclosure is generally larger than a sealed enclosure
Sealed Enclosures: A sealed enclosure will be the smallest enclosure you can build. It will have a
tight low frequency response, but not as low as a ported enclosure.
OPTIMUM ENCLOSURES
PORTED
NV-SW12
NV-SW15
Volume (litres)
87.38
106.4
Volume (cu.ft)
3.086
3.759
101mm / 4"
101mm / 4"
Port length (mm / in)
304mm / 11-15/16"
289mm / 11-3/8"
Tuned frequency (Hz)
28
26.2
Port diameter (mm / in)
SEALED
Volume (litres)
55.62
75.7
Volume (cu.ft)
2.043
2.68
45
37
Tuned frequency (Hz)
ENCLOSURE CONSTRUCTION
All enclosures should be constructed from 18mm (3/4”) Medium Density Fibre board.
Enclosures should be glued and screwed, because MDF is porous. FUSION recommends
sealing the internal sides with a polyurethane sealer prior to installation. To accurately cut the
subwoofer hole use the unique FUSION ruler guide included inside the FUSION Subwoofer
packaging.
ENCLOSURE PLACEMENT
An important factor is to place the subwoofer enclosure as far back in the vehicle as possible,
so that the natural bass gain of the vehicle is utilised. If your vehicle is a hatch back, always
experiment with which direction the subwoofer is facing. Facing the subwoofer towards the
rear of the car, should enhance the low down bass that NV Series Subwoofers are designed
to produce.
ENCLOSURE TUNING
When tuning the system it is always a good idea to try running the subwoofer out of phase
(which means switching the speaker wires around) with your other speakers. Do this and listen
to the system to see if the perception of bass is more from the subwoofer location or the front
speaker location. Which ever way gives the better perception that the bass is coming from the
front speakers, would quite safely guarantee the subwoofer is wired correctly.
CALCULATING ENCLOSURE ‘BOX’ VOLUME
Cuft:
To calculate Cuft multiply the height (A), width (B), depth (C) in inches, then divide that number
by 1728.
Example: 10" high x 18" wide x 12" deep = 2160 inches³
Divide 2160/1728 = 1.25 ft³
Litres:
To calculate Litres, multiply the height (A), width (B), depth (C) in centimetres, then divide that
number by 1000.
Example: 25.4cm high x 45.72cm wide x 30.48cm deep = 3539cm³
Divide 35396/1000 = 35.39 litres
A
B
C
ENCLOSURE TEST CURVES
SUBWOOFER
NV-SW12
SEALED
Amplitude Response (dB-SPL/Hz at 1 m) with 1200 watts
124
118
112
dB
106
100
94
88
82
5
10
50
100
500
1000
20K
500
1000
20K
Hz
PORTED
Amplitude Response (dB-SPL/Hz at 1 m) with 1200 watts
124
118
112
dB
106
100
94
88
82
5
10
50
100
Hz
10
SUBW00FER
NV-SW15
SEALED
Amplitude Response (dB-SPL/Hz at 1 m) with 1500 watts
125
119
113
dB
107
101
95
89
83
5
10
50
100
500
1000
20K
500
1000
20K
Hz
PORTED
Amplitude Response (dB-SPL/Hz at 1 m) with 1500 watts
125
119
113
dB
107
101
95
89
83
5
10
50
100
Hz
11
TECH TIPS
POWER CABLE CALCULATOR
TOTAL AMPERAGE
0-4 FT
4-7 FT
7-10 FT
10 -13 FT
13-16 FT
16-19 FT
19-22 FT
22-28 FT
0 – 20
14
12
12
10
10
8
8
8
20 – 35
12
10
8
8
6
6
6
4
35 – 50
10
8
8
6
4
4
4
4
50 – 65
8
8
6
4
4
4
4
2
65 – 85
6
6
4
4
2
2
2
0
85 – 105
6
6
4
2
2
2
2
0
105 – 125
4
4
4
2
0
0
0
0
125 – 150
2
2
2
0
0
0
0
0
The above chart shows cable gauges to be used, if no less than a 0.5 volt drop is acceptable. If aluminium
wire or tinned wired is used, the gauges should be of an even larger size to compensate. Cable gauge size
calculation takes into account terminal connection resistance.
OHMS LAW SIMPLIFIED
E
I
IR
I
W
e
tts
W
E
I2R
W/R
12
E2
R
wa
lta
R
nc
vo
ta
E
ge
ra t
pe ren
am cur
E
R
W
I2
sis
WR
E2
W
re
ge
W
I
EI
SUBWOOFER RULER GUIDE
Use the FUSION ruler guide to create a perfect subwoofer mounting surface.
Fig. 1
1: Mark the centre position on the MDF (Medium Density Fibre) board where the subwoofer is to be mounted.
0
10
20
30
40
50
Centre
0
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
2
3
240 250
260
10"
cutout
usionc r udio com
1
4
5
6
7
8
9
270
280
10" outside
263mm
10
11
290
310
300
12"
cutout
12
320
330
340
360
350
13
370
380
15"
cutout
12" outside
312mm
14
15
390
(mm)
400
15" outside
389mm
16
(inch)
Fig. 2
2: Fix the first hole (centre) to the marked out position on the MDF.
13
0
10
20
30
40
50
Centre
0
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
2
3
240 250
260
10"
cutout
usionc r udio com
1
4
5
6
7
8
9
270
280
10" outside
263mm
10
11
290
310
300
12"
cutout
12
320
330
340
360
350
13
370
380
15"
cutout
12" outside
312mm
14
15
390
(mm)
400
15" outside
389mm
16
(inch)
Fig. 3
3: Insert a pencil into the correct subwoofer cut out measurement. 10", 12", or 15".
0
1
2
10
3
4
5
6
7
8
9
20
30
40
50
60
70
80
90
100
10
11
10"
cutout
www.fusioncaraudio.com
Centre
0
110
120
130
140
150
160
170
180
190
200
210
220
230
240 250
12
10" outside
263mm
260
270
280
13
12"
cutout
290
300
310
14
15
12" outside
312mm
320
330
15"
cutout
340
350
360
370
380
16
(inch)
15" outside
389mm
390
400
(mm)
Fig. 4
4: Scribe a perfect cut out diameter onto the MDF board.
Fig. 5
5: Using a jigsaw or router, cut out this measurement.
14
SERIES AND PARALLEL SUBWOOFER WIRING FOR
DUAL VOICE COIL SUBS
Parallel Voice Coil Wiring (1 Ohm operation)
To wire a DVC subwoofer in parallel (to get 1 Ohm), use two short pieces of speaker wire and
link the positive from one coil to the positive of the second coil, and do the same for the negative
as shown in fig 1. Then wire the amplifier to opposite sides of the subwoofer in order to equalise
any connection resistance.
-
Fig.1
1 Ohm operation
Series Voice Coil Wiring (4 Ohm operation)
To wire a DVC subwoofer in series (to get 4 Ohms), use one short piece of speaker wire and link
the positive from one voice coil to the negative of the second coil as shown in fig 2. Then wire
the amplifier to opposite sides of the subwoofer.
Fig. 2
4 Ohm operation
15
PARALLEL WIRING FORMULA FOR 2 SPEAKERS
8 Ohm
4 Ohm
2.67 Ohms
R1 x R2
R1 + R2
=
4 Ohms x 8 Ohms
LOAD IMPEDANCE
4 Ohms + 8 Ohms
=
32
12
=
2.67 Ohms
SERIES WIRING FORMULA FOR 2 SPEAKERS
–
+
–
4 Ohm
4 Ohm
–
8 Ohms
R1 + R2 = LOAD IMPEDANCE
16
+
+
TROUBLE SHOOTING
No sound from your subwoofer: Check amplifier and wiring connections.
Distorted sound: Check the connections from amplifier, processor or head unit.
Subwoofer makes unusual noise in sealed enclosure: The enclosure may have leaks causing
a lack of back pressure. Remove the subwoofer and ensure the enclosure is completely sealed,
use sealer and polyurethane to do this.
Ported enclosure makes an unusual noise: Possibly due to incorrect port used. The correct
term is chuffing, and to rectify this you will need to increase the port area. The diameter will need
to increase and the port length will need recalculating.
Bad smell: If you smell a burning smell, then chances are the subwoofer has been damaged.
This can be due to the enclosure parameters being incorrect, too small an amplifier used and the
subwoofer is receiving unwanted clipped signals or the music choice has enhanced bass notes
played for long periods of time. Check the enclosure volume used and ensure the subwoofer is
receiving clean audio signals from the amplifier.
Vehicle rattles: The best way to solve this problem is to add sound deadening material to the
steel panels of your vehicle. Ensure all screws and plastic panels are affixed firmly.
INSTALLATION WARNING
1: Ensure the vehicle 12 volt lead is removed before any equipment is connected.
2: Investigate the vehicle’s gas tanks, brake lines and electrical wiring locations before you
begin installation.
3: Attach the product securely to the vehicle to prevent damage in the event of an accident.
4: Ensure all wiring is protected to avoid damage or pinching of the cables.
17
NOTES
18
YOU CAN HELP PROTECT THE ENVIRONMENT!
Please remember to respect the local regulations:
Hand in the non-working electrical equipment
to an appropriate waste disposal center.
PUBLISHED BY FUSION ELECTRONICS LIMITED:
© Copyright 2006 by FUSION Electronics Limited.
All rights reserved. Specifications and design are
subject to change without notice.
19
Specifications and design are subject to change without notice.