oz vector subwoofer user manual - oz …ozaudiousa.com/file/2015/12/subwoofer-manual.pdf1181 south...

1181 South Rogers Circle, Suite 18

Boca Raton, Florida 33487

e-mail [email protected]

www.jti-innovation.com

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INSTALLATION GUIDELINES

WARNING: Both voice coils must be connected to the amplifier for correct operation of this speaker. Use of this speaker with only one voice coil connected voids all warranties. Voice coils may be wired in parallel or series to connect to a single channel of an amplifier or a mono-bridged amplifier. Important Notice: In case of connection with reverse polarity at only one pair of the connector pins, the voice coils are working against each other. In this case you would not hear any bass but the voice coils are still heavily used. This might cause damage to the subwoofer. Double-check the wiring connections and start testing the system with low volume level.

Attention: If sheet metal must be cut or removed, contact your authorized car audio dealer for professional advice. By damage to supporting body, the safety certificate may be withdrawn.

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• Before cutting any trim or steel, make sure you clear all moving parts and factory electrical lines.• Be sure to leave enough slack in the wire to prevent pulling or stretching wires

for service later.• Tie down all loose wires to prevent them from getting caught in moving parts

or shorted due to abrasion over time.• Never mount speakers in a car’s wheel wells or areas where they might be

subjected to moisture or road spray.• Proper speaker polarity must be preserved. The polarity positive side is marked

by a + sign and/or a red dot. At low frequencies woofers out-of-phase will acoustically cancel which will result in little bass output.• Although the components used in Oz Audio exceed most international standards,

speaker frames can be twisted by improper installation on uneven surfaces. This can occur when the surface is heavily padded or carpeted and the screws are unevenly or over tightened.• When installing more than one speaker per amplifier channel, be sure that the

combined impedance values cannot damage the amplifier.• Speaker wire should be isolated from the electrical system of the car and routed

away from any factory systems in order to avoid noise picked up and fed back to the amplifiers.• Speaker wire size should be of sufficient size in order to carry the full power of

the amplifier/s.• Do not drill or drive screws through any vehicle interior or carpeted floor before

inspecting the underside for potential punctures to control lines or cables. Be sure to avoid all fuel lines, brake lines, electrical cables or oil lines when planningthe installation.

Oz Audio Vector Series Subwoofer User Manual

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Advantages And Disadvantages of Most Popular Enclosure DesignsCOMMON ENCLOSURE TYPESIn the car audio world there are 3 types of subwoofer enclosures commonly used; SEALED BOX (closed box), VENTED BOX (bass reflex) and SINGLE-VENTED BANDPASS ( 4th order ). No single design is superior because each has its own compromise in performance, power handling, and design complexity.

SEALED boxes offer one of the best compromises in power handling and performance. Because of the “air spring” provided by the box the advantages include simple box construction, high power handling, excellent transient response, and smooth low frequency roll-off. Disadvantages include only moderate efficiencies at low frequencies and the need for large box volumes. VENTED boxes extend the low frequency response below that of the sealed box by using a port tube. Advantages include extended low frequency response, lower distortion due to smaller cone movements in its passband, good efficiency, good transient response, moderate size boxes, and high power capacity. Disadvantages include increased complexity in box design and possible woofer damage due to over excursion of the woofer cone below the cut-off frequency of the vented box. SINGLE-VENTED BANDPASS boxes are relatively new for use in the car but offer someadvantages of both the sealed and vented designs. Advantages include reasonable efficiency, small box volumes, good transient response, extended low frequency performance, and canbe used with very high power amplifiers. Disadvantages include increased complexity in box design and construction.

Sealed Enclosures - The use of a sealed enclosure is not recommended unless the majorityof music listened to (Genre) is either, Classic Rock, Contemporary Rock, Heavy Metal, Jazz, Classical, some forms of Dance and Techno or Country Western music. If one’s Genre is that of Rap, R&B or any form of Hip Hop, the use of a vented enclosure is recommended.Vented Enclosures - The use of a vented enclosure is recommended when low bass extension is desired as well as an increase in SPL level in the overall bass response .The graphs below depict the basic difference in response between a sealed box recommendation and that of the same driver in a vented application. The use of this type of enclosure is recommended if the main music Genre listened to is Rap, R&B or any form of Hip Hop.Band Pass Enclosures - The use of a band pass type enclosure is recommended when the full sound of bass reproduction is desired to be heard in the sitting (cabin) area of the vehicle when the enclosure is typically mounted in another compartment, such as the trunk of a sedan. NOTE: All or part of the port may be mounted on the outside of the enclosure. PLEASE CALL TECH SUPPORT IN REGARDS TO THE DESIGN OF ANY TYPE OF BAND PASS ENCLOSURE.

Typical Sealed Box Response Graph Typical Ported Box Response Graph

Typical Bandpass Box Response Graph


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Size In most vehicles, an 8” to 12” diameter subwoofer is likely to fit and provide excellent output when placed in a correctly sized enclosure. Be sure to review the subwoofer’s recommended enclosure volume before selecting or constructing a subwoofer enclosure. If vehicle space is limited, it is better to go with a smaller diameter subwoofer with a properly sized enclosure, rather than squeezing a larger diameter subwoofer into an under-sized enclosure. If space limitations are not a problem, larger 12” or 15” subwoofers (even multiple subwoofers) are possible.

RMS Power Handling Use RMS power ratings to select an amplifier to power your subwoofer. Match the amplifier’s per channel RMS power with the subwoofer’s RMS power handling. “Peak” or “Max” power ratings on either the amplifier or subwoofer can be misleading since each manufacturer defines Peak ratings differently. RMS power handling is a good indication of continuous reliability of both the subwoofer and amplifier when used in the correct enclosure.

Voice Coils The decision to purchase a single voice coil (SVC) or dual voice coil (DVC) subwoofer, and its nominal impedance (Ohms), depends on the “load” of the subwoofer(s) connected to theamplifier. A general rule of thumb is to choose voice coil configurations that load amplifiers at 4 ohms (2 ohms on amplifiers that can support it). This allows the amplifier to power the subwoofer(s) continuously with no overheating or overloading problems. A single subwoofer with a single voice coil is straightforward (for example – 4 ohms). Multiple SVC and one or more DVC subwoofers can be wired in series, parallel or series-parallel combinations. Each wiring design allows for a different configuration of subwoofer(s) to amplifier(s) and is necessary because not all subwoofer voice coils are the same nominal impedance. See the series and parallel connections section in this manual for tips on DVC and multiple subwoofer connections to an amplifier.

Before You Begin - Determine

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OzV-8.2S4

OzV-10.2D2/4OzV-10.25D2/4

OzV-12.2D2/4OzV-12.25D2/4

All These enclosure recommendations have been calculated with the airspace inside and include the displacement of the driver motor assembly (and port in regards to ported enclosure types). NOTE: Recommendations for volumes and dimensions for all types of enclosures are intended for use with a single woofer. If more than one woofer is to be used, multiply the recommended volume by the number of woofers you intend on using.

.5 cu. ft.

.8 cu. ft.

1.6 cu. ft.

11.5” x 11.5” x 10”

13.5” x 13.5”x 11”

W

SubwooferVolume (Net Internal)

External Dimensions (Width x Height x Depth)

Recommended Sealed Enclosures

14.16 liter

22.65 liter

45.31 liter

OzV-8.2S4

Subwoofer

1.1 cu. ft.

OzV-12.2D2/4OzV-12.25D2/4

1.7 cu. ft.

2.17 cu. ft.

Volume

Enclosure External Dimensions (Width x Height x Depth)

(Net Internal)

31.15 liter

48.14 liter

Recommended Vented/Ported Enclosure

292mm x 292mm x 254mm

343mm x 343mm x 279mm

15.5” x 15.5” x 15.75”394mm x 394mm x 400mm

OzV-10.2D2/4OzV-10.25D2/4

12.5” x 12.5 x 17.5”

15.5” x 15.5” x 16”

16” x 16” x 19”

Port Dimensions Round - Diameter (RPD), Length (RPL)

317mm x 317mm x 444mm

394mm x 394mm x 406mm

mm x 406mm x 483mm

Slotted - Width (SW), Length (SL), Height (SH) RPD-3” (76mm) RPL-12” (305mm)

SW-.65”(165mm) SL-12”(305mm) SH-11”(279mm)

RPD - 4” RPL - 11.5”

H

SW-.9”(23mm) SH-14”(356mm)

RPD - 4” (102mm) RPL - 14”SW-1.2”(30mm) SL-14”(356mm) SH-15”(381mm)

(292mm)

(356mm)40661.48 liter

If you would like to use either enclosure, but the box designs we provide you with (in this manual) do not fit your application because of W, H or D, the designs can be modified. The shape of the enclosure is not vital, but The Volume Is. The volume of the design you choose, must stay the same.NOTE: Do not install a ported box with the port against a solid surface. The port opening must remain unobstructed. The vent's placement within the enclosure is also important. You must leave at least 3” (76mm) between the vent and any inside wall.

(102mm)

Sealed Enclosure Application

D

SL-11.5”(292mm)

D

Vented Enclosure Using Round Port Tubes

W

SL

W

SH

RPL H

D

Vented Enclosure Applications

Vented Enclosures Using Slotted Port

W

SW

RPD

Series connection, one path for current-impedance adds

Parallel connection, two paths for current-impedance reduces

Speaker Connections In Series Or Parallel


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The diagram to the left shows two speakers connected in series. Assume that the positive lead from the power source connects to the left speaker's positive terminal, and that the lead connecting over to the speaker on the right also goes to that speaker's positive terminal. The right speaker's remaining terminal is negative and is connected to the negative terminal of the power amplifier. Because there is one path for current that passes through two impedances, the impedances add. With these 2 ohm speakers, the resulting total impedance would be 4 ohms. As the higher impedance will reduce current flow for a given voltage, this represents a lighter load to the amplifier than the single speaker. In the second example, the speakers are wired together in parallel; there are two paths for current to flow. If the speakers are the same impedance, then each will flow the same amount of current, for twice the total amount that the single speaker would otherwise flow (for a given voltage). Therefore, if each speaker is 4 ohms, the overall circuit impedance is 2 ohms. It should stand to reason that a single 2 ohm speaker would flow the same amount of current. As you can see in the wiring examples how multiple speakers are connected to an amplifier channel has a great affect on the performance of the amplifier. If not rated for a 1 ohm load, an amplifier connected to such a load can over heat and shut down, or possibly even be damaged. Also, an amplifier will not provide its best sonic quality driving an impedance load heavier than it is rated for.

Examples Of Speaker Connections In Series Or Parallel


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Examples Of Speaker Connections In Series Or Parallel


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Subwoofer

OzV-8.2S4

Oz Audio Subwoofer Dimension Guide

315 mm12.4 inches

297 mm11.7 inches

281 mm11 inches

139 mm 157 mm

315 mm12.4 inches

297 mm11.7 inches

281 mm11 inches

127 mm5.00 inches

145 mm5.71 inches

260 mm10.25 inches

247 mm9.72 inches

232 mm9.13 inches

127 mm 144 mm

260 mm10.25 inches

247 mm9.72 inches

232 mm9.13 inches

114 mm 132 mm

215 mm 200 mm 181 mm 110 mm 125 mm7.13 inches7.87 inches8.46 inches

6.18 inches

5.67 inches

5.47 inches

5.00 inches

4.50 inches 5.20 inches

4.33 inches 4.92 inches


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OzV-10.2D2/4

OzV-10.25D2/4

OzV-12.2D2/4

OzV-12.25D2/4

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Oz Audio1572 W. San Bernardino Rd Covina, Ca 91722 Phone: 626 521-9980 Sales: 626 521-9984 [email protected]

oz vector subwoofer user manual - oz …ozaudiousa.com/file/2015/12/subwoofer-manual.pdf1181 south...

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