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  3. Speakers with Sound Deadening

Speakers with Sound Deadening for your 1974 Custom 500 close

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Speaker Size
Refers to the size of the speaker measured in inches. Every vehicle has standard application sizes. Please use our vehicle fitment guide for your vehicle's specific speaker sizes if you do not know them.
Design
The number of individual drivers in a car speaker. Speakers with 2 drivers are known as a 2-way, and 3 drivers are known as a 3-way. Component systems are often referred to as "separates" because the tweeter is not attached to the midwoofer (main speaker driver) and mounts separately in a location such as a door post. Component systems typically come with an external crossover so you can easily adjust the high and low frequencies sent to both the midwoofer and the tweeter. Center channel speakers are great for those looking to have surround sound in their vehicle.
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
Sensitivity
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
  Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.
Tweeter Design
Designs such as cone, dome, semi-dome, balanced dome, and whizzer are most popular. Cone tweeters are simple, efficient and typically are the most reasonably priced. Dome tweeters are used in most home speakers, and provide a smoother and more accurate sound. Semi-dome design is one with a dome placed inside a cone. A Balanced dome driver is a semi-dome with equal reproduction area given the cone and dome portions of the driver. A whizzer tweeter is a separate tweeter cone driven by the voice coil of the woofer.
Series
Many brands group their products into series or lines of products to help customers know the level of quality (good, better, best for example). You can filter by series and the brand using our guided browsing.
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JBL Stadium 962M (JBLSPKSD962MAM) with Sound Damping

720W Peak (240W RMS) 6x9" Stadium Series 3-Way 3-Ohm Coaxial Car Speaker + NVX SDBSK2 Premium Sound Damping

STADIUM962M_SDBSK2 big
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JBL Stadium 962M (JBLSPKSD962MAM) with Sound Damping

720W Peak (240W RMS) 6x9" Stadium Series 3-Way 3-Ohm Coaxial Car Speaker + NVX SDBSK2 Premium Sound Damping

• 360 watts Peak Each, 120 watts RMS Each
• 3/4" Aluminum Dome tweeters
• Fiberglass cone material
• Impedance: 3 ohm
• Sensitivity: 94 dB

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50
List price $368.69
-23% $284.94

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• 360 watts Peak Each, 120 watts RMS Each
• 3/4" Aluminum Dome tweeters
• Fiberglass cone material
• Impedance: 3 ohm
• Sensitivity: 94 dB

Polk Audio DB6502 6.5" Component Speakers + Sound Dampening Kit

600W Peak (200W RMS) 6.5" DB+ Series 2-way Marine Component Speakers with Sound Dampening

SDSK2,DB6502 big
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Polk Audio DB6502 6.5" Component Speakers + Sound Dampening Kit

600W Peak (200W RMS) 6.5" DB+ Series 2-way Marine Component Speakers with Sound Dampening

• 300 Watts Max Each, 100 Watts RMS Each
• 0.75" shallow tweeter design
• Polypropylene UV tolerant cone
• 4 Ohm Impedance
• Sensitivity: 92dB
• Mounting Depth: 1.77"
• IP65 rated

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163
List price $228.73
-9% $207.49 /set

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• 300 Watts Max Each, 100 Watts RMS Each
• 0.75" shallow tweeter design
• Polypropylene UV tolerant cone
• 4 Ohm Impedance
• Sensitivity: 92dB
• Mounting Depth: 1.77"
• IP65 rated

NVX - Worth the Envy - Direct to Consumer Car Audio

DS18 PRO-GM6.4PK with Speaker Installation Kit

Includes: (2) 6x9” Mid-Range Loudspeaker, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit, Installer Panel Removal Tool Kit, Rubber Roller

(2) PRO-X694BM, FRING69, SDSK2, SDRLR1, BTK106 big
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DS18 PRO-GM6.4PK with Speaker Installation Kit

Includes: (2) 6x9” Mid-Range Loudspeaker, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit, Installer Panel Removal Tool Kit, Rubber Roller

• 275W RMS 6x9” PRO-X Series Mid-Range Speaker with Bullet and Grille
• 2 Piece Silicone Rubber Speaker Ring Kit
• 1.38 Square Feet of Sound Damping
• Installer Panel Removal Tool Kit
• Rubber Roller

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155
List price $240.61
-14% $207.30

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• 275W RMS 6x9” PRO-X Series Mid-Range Speaker with Bullet and Grille
• 2 Piece Silicone Rubber Speaker Ring Kit
• 1.38 Square Feet of Sound Damping
• Installer Panel Removal Tool Kit
• Rubber Roller

Alpine S2-S69 with Installation Accessories

520W Peak (170W RMS) 6"x9" S-Series 2-way Coaxial Car Speakers

S2-S69, XBAF69, SDSK2, SDRLR2, BTK106 big
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Alpine S2-S69 with Installation Accessories

520W Peak (170W RMS) 6"x9" S-Series 2-way Coaxial Car Speakers

• 260 watts Peak Each, 85 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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191
List price $292.71
-26% $215.63 /pair

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• 260 watts Peak Each, 85 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Polk MM652 MM1 6.5" 600 Watt Coaxial Speakers + Sound Deadening & Roller

600W Peak (200W RMS) 6.5" 2-Way Coaxials with Sound Dampening and Application Roller

SDRLR1,SDSK2,MM652 big
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Polk MM652 MM1 6.5" 600 Watt Coaxial Speakers + Sound Deadening & Roller

600W Peak (200W RMS) 6.5" 2-Way Coaxials with Sound Dampening and Application Roller

• 180 Watts Max Each, 80 Watts RMS Each Side
• 1", Terylene Fabric Tweeter
• 6.5" Titanium-Plated Polymer Midwoofer Cone
• 4 Ohm Impedance
• Sensitivity: 93 dB
• Mounting Depth: 2.62"

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76
List price $282.73
-30% $197.88 /pair

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• 180 Watts Max Each, 80 Watts RMS Each Side
• 1", Terylene Fabric Tweeter
• 6.5" Titanium-Plated Polymer Midwoofer Cone
• 4 Ohm Impedance
• Sensitivity: 93 dB
• Mounting Depth: 2.62"

Cerwin-Vega PH694 with Sound Damping

640W Peak (320W RMS) 6x9" PRO Series Full-Range Coaxial Car Speakers + NVX SDSK2 Sound Damping

PH694_SDSK2 big
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Cerwin-Vega PH694 with Sound Damping

640W Peak (320W RMS) 6x9" PRO Series Full-Range Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 320 watts Peak Each, 160 watts RMS Each
• Impedance: 4 ohm
• Sensitivity: 101 dB

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50
List price $258.73
-17% $214.98

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• 320 watts Peak Each, 160 watts RMS Each
• Impedance: 4 ohm
• Sensitivity: 101 dB

Hertz DSK130.3 with Sound Damping

120W Peak (60W RMS) 5.25” Dieci Series Component Speakers + NVX SDSK2 Sound Damping

DSK1303_SDSK2 big
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Hertz DSK130.3 with Sound Damping

120W Peak (60W RMS) 5.25” Dieci Series Component Speakers + NVX SDSK2 Sound Damping

• 60 Watts Max Each, 30 Watts RMS Each
• Water-repellent pressed paper cone material
• PEI Tweeter Dome
• 4 Ohm Impedance
• Sensitivity: 93 dB

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48
List price $248.74
-14% $214.98

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• 60 Watts Max Each, 30 Watts RMS Each
• Water-repellent pressed paper cone material
• PEI Tweeter Dome
• 4 Ohm Impedance
• Sensitivity: 93 dB

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MTX Audio THUNDER61 with Sound Damping

180W RMS 6.5" Thunder Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

THUNDER61_SDBSK2 big
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MTX Audio THUNDER61 with Sound Damping

180W RMS 6.5" Thunder Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

• 90 watts RMS Each
• 1-3/8" Silk Soft Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

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50
List price $258.69
-17% $214.96

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• 90 watts RMS Each
• 1-3/8" Silk Soft Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

Polk Audio DB652 with Installation Accessories

200W RMS 6.5" 2-way Car & Marine Coaxial Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

DB652, XBAF65, SDSK2, SDRLR1, BTK106 big
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Polk Audio DB652 with Installation Accessories

200W RMS 6.5" 2-way Car & Marine Coaxial Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

• 300 watts Peak Each, 100 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

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363
List price $192.70
-23% $149.03 /pair

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• 300 watts Peak Each, 100 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

Infinity REF697CF with Sound Damping

750W Peak (250W RMS) 6x9" Reference Series 2-way 4-ohm Component Speaker System + NVX SDSK2 Sound Damping

REF697CF_SDSK2 big
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Infinity REF697CF with Sound Damping

750W Peak (250W RMS) 6x9" Reference Series 2-way 4-ohm Component Speaker System + NVX SDSK2 Sound Damping

• 375 watts Peak Each, 125 watts RMS Each
• 3/4" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

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48
List price $328.69
-10% $294.94

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• 375 watts Peak Each, 125 watts RMS Each
• 3/4" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

Polk Audio DB5252 with Sound Dampening

600W Peak (300W RMS) 5.25" 2-Way Marine Grade Component Speakers (Pair) + SDSK2 Speaker Sound Dampening Kit - Two 10" x 10" Pieces

SDSK2,DB5252 big
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Polk Audio DB5252 with Sound Dampening

600W Peak (300W RMS) 5.25" 2-Way Marine Grade Component Speakers (Pair) + SDSK2 Speaker Sound Dampening Kit - Two 10" x 10" Pieces

• 300 Watts Max Each, 100 Watts RMS Each
• 0.75" shallow tweeter design
• Polypropylene UV tolerant cone
• 4 Ohm Impedance
• Sensitivity: 91dB
• Mounting Depth: 1.77"
• IP65 rated

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52
List price $228.73
-13% $200.00 /set

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• 300 Watts Max Each, 100 Watts RMS Each
• 0.75" shallow tweeter design
• Polypropylene UV tolerant cone
• 4 Ohm Impedance
• Sensitivity: 91dB
• Mounting Depth: 1.77"
• IP65 rated

Polk Audio (DB6502) 600 Watt 6.5" Component Speakers + Sound Dampening

600W Peak (300W RMS) 6.5" 2-Way Marine Grade Component Speakers (Pair) + SDSK2 Speaker Sound Dampening Kit - Two 10" x 10" Pieces

SDSK2,DB6502 big
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Polk Audio (DB6502) 600 Watt 6.5" Component Speakers + Sound Dampening

600W Peak (300W RMS) 6.5" 2-Way Marine Grade Component Speakers (Pair) + SDSK2 Speaker Sound Dampening Kit - Two 10" x 10" Pieces

• 300 Watts Max Each, 100 Watts RMS Each
• 0.75" shallow tweeter design
• Polypropylene UV tolerant cone
• 4 Ohm Impedance
• Sensitivity: 92dB
• Mounting Depth: 1.77"
• IP65 rated

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56
List price $228.73
-13% $200.00 /set

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• 300 Watts Max Each, 100 Watts RMS Each
• 0.75" shallow tweeter design
• Polypropylene UV tolerant cone
• 4 Ohm Impedance
• Sensitivity: 92dB
• Mounting Depth: 1.77"
• IP65 rated

Polk Audio DB522 with Sound Damping

600W Peak (200W RMS) 5.25" DB+ Series 2-way Marine Coaxial Speakers with Sound Dampening

SDSK2,DB 522 big
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Polk Audio DB522 with Sound Damping

600W Peak (200W RMS) 5.25" DB+ Series 2-way Marine Coaxial Speakers with Sound Dampening

• 300 Watts Max Each, 100 Watts RMS Each
• 0.75" shallow tweeter design
• Polypropylene UV tolerant cone
• 4 Ohm Impedance
• Sensitivity: 91dB
• Mounting Depth: 1.74"

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117
List price $128.73
-14% $111.24 /pair

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• 300 Watts Max Each, 100 Watts RMS Each
• 0.75" shallow tweeter design
• Polypropylene UV tolerant cone
• 4 Ohm Impedance
• Sensitivity: 91dB
• Mounting Depth: 1.74"

(Pair) DS18 ZXI-654 with Speaker Installation Kit

Includes: (2) 6x9” Mid-Range Loudspeaker, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit, Installer Panel Removal Tool Kit, Rubber Roller

(2) PRO-SM69.2, FRING69, SDRLR1, SDSK2, BTK106 big
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(Pair) DS18 ZXI-654 with Speaker Installation Kit

Includes: (2) 6x9” Mid-Range Loudspeaker, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit, Installer Panel Removal Tool Kit, Rubber Roller

• 250W RMS 6x9” PRO-SM Series Shallow Water Resistant Mid-Range Speaker
• 2 Piece Foam Speaker Ring Kit
• 1.38 Square Feet of Sound Damping
• Installer Panel Removal Tool Kit
• Rubber Roller

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154
List price $228.61
-15% $195.30

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• 250W RMS 6x9” PRO-SM Series Shallow Water Resistant Mid-Range Speaker
• 2 Piece Foam Speaker Ring Kit
• 1.38 Square Feet of Sound Damping
• Installer Panel Removal Tool Kit
• Rubber Roller

JBL Stage3 607C with Speaker Installation Kit

Kappa Series 5.25” 2-Way Car Component Speakers System + NVX Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

Kappa 503CF, XBAF525, SDSK2, SDRLR1, BTK106 big
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JBL Stage3 607C with Speaker Installation Kit

Kappa Series 5.25” 2-Way Car Component Speakers System + NVX Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

• 330 watts Watts Max Each Side, 110 watts Watts RMS Each Side
• 3/4"" Textile Dome Tweeter
• Fiberglass cone material
• Impedance: 3 ohm Ohm
• Sensitivity: 93 dB dB
• Mounting Depth: 2.25""

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150
List price $522.66
-39% $320.02 /set

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• 330 watts Watts Max Each Side, 110 watts Watts RMS Each Side
• 3/4"" Textile Dome Tweeter
• Fiberglass cone material
• Impedance: 3 ohm Ohm
• Sensitivity: 93 dB dB
• Mounting Depth: 2.25""

JVC CS-DR693 with Speaker Installation Kit

DR Series 6'' x 9'' (15 x 23cm) 3-Way Coaxial Speakers + NVX Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

CS-DR693, XBAF69, SDSK2, SDRLR1, BTK106 big
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JVC CS-DR693 with Speaker Installation Kit

DR Series 6'' x 9'' (15 x 23cm) 3-Way Coaxial Speakers + NVX Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

• 500 watts Peak Each, 70 watts RMS Each
• 19/32 Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

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189
List price $221.71
-52% $105.67 /pair

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• 500 watts Peak Each, 70 watts RMS Each
• 19/32 Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

MTX TERMINATOR68 with Speaker Installation Kit

200W Peak (100W RMS) 6x9" 3-Way Thunder Series Coaxial Car Speakers + NVX Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

THUNDER693, XBAF69, SDSK2, SDRLR1, BTK106 big
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MTX TERMINATOR68 with Speaker Installation Kit

200W Peak (100W RMS) 6x9" 3-Way Thunder Series Coaxial Car Speakers + NVX Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

• Peak Power: 200W • RMS Power: 100W
• Pivoting Tweeter
• Mounting Depth: 3"
• Polypropylene Cone

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206
List price $282.66
-30% $198.28 /pair

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• Peak Power: 200W • RMS Power: 100W
• Pivoting Tweeter
• Mounting Depth: 3"
• Polypropylene Cone

Infinity PR9693M with Speaker Installation Kit

180W Peak (60W RMS) 6 x 9” Coaxial Car Speakers

INFSPKPR693M, XBAF69, SDSK2, SDRLR2, BTK106 big
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Infinity PR9693M with Speaker Installation Kit

180W Peak (60W RMS) 6 x 9” Coaxial Car Speakers

• 180 watts Peak Each, 60 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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189
List price $272.66
-28% $195.64 /pair

In stock

Only 1 Left!

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• 180 watts Peak Each, 60 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Infinity Primus 503CF with Installation Accessories

100W RMS 5.25” 2-Way Component Speaker System with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

PR503CF, XBAF525, SDSK2, SDRLR1, BTK106 big
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Infinity Primus 503CF with Installation Accessories

100W RMS 5.25” 2-Way Component Speaker System with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

• 150 watts Peak Each, 50 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 91 dB

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123
List price $223.66
-28% $161.21 /set

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• 150 watts Peak Each, 50 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 91 dB

Rockford Fosgate Power T1692 with Sound Damping

400W Peak (200W RMS) 6x9" Power Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

09-T1692_SDBSK2 big
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Rockford Fosgate Power T1692 with Sound Damping

400W Peak (200W RMS) 6x9" Power Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 200 watts Peak Each, 100 watts RMS Each
• 1" Aluminum Dome tweeters
• Polypropylene-Carbon Fiber Hybrid cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

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71
List price $308.73
$304.98

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• 200 watts Peak Each, 100 watts RMS Each
• 1" Aluminum Dome tweeters
• Polypropylene-Carbon Fiber Hybrid cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

NVX - Worth the Envy - Direct to Consumer Car Audio
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    Shop your 1974 Custom 500
    Why Use a Vehicle Fit Guide?
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    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

    • You see only parts engineered for your exact vehicle
    • You avoid incompatible radios, speakers, or wiring
    • Installation is smoother, faster, and frustration-free
    • You get the correct accessories the first time

    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.

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