NV SERIES SUBWOOFER MODELS NV– SW12, NV– SW15
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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 .
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.
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.
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.
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 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.
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. 3 3: Insert a pencil into the correct subwoofer cut out measurement. 10", 12", or 15".
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.
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.
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.
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.
Specifications and design are subject to change without notice.
