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  3. Speakers with Sound Deadening

Speakers with Sound Deadening for your 2004 RX-8 close

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Product Fitment Type
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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MB Quart FKB169 with Installation Accessories

300W Peak (150W RMS) 6"x9" Formula Series 2-Way Coaxial Car Speakers

FKB169, XBAF69, SDSK2, SDRLR1, BTK106 big
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MB Quart FKB169 with Installation Accessories

300W Peak (150W RMS) 6"x9" Formula Series 2-Way Coaxial Car Speakers

• 150 watts Peak Each, 75 watts RMS Each
• 1" Aluminum Dome Tweeters
• Thermoformed Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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found car based on your search
Fits the following location in your RX-8
  • Rear Deck Corner
197
List price $182.70
-47% $96.67 /pair

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• 150 watts Peak Each, 75 watts RMS Each
• 1" Aluminum Dome Tweeters
• Thermoformed Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Cerwin-Vega XED693 with Sound Damping

600W Peak (70W RMS) 6x9" XED Series 3-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

XED693_SDSK2 big
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Cerwin-Vega XED693 with Sound Damping

600W Peak (70W RMS) 6x9" XED Series 3-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 350 watts Peak Each, 45 watts RMS Each
• 1" Metallic Balanced Dome Tweeters
• Curvilinear polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

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73
List price $84.73
-17% $69.98

In stock

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• 350 watts Peak Each, 45 watts RMS Each
• 1" Metallic Balanced Dome Tweeters
• Curvilinear polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

Cerwin Vega H7692 with Sound Damping

800W Peak (110W RMS) 6x9" HED Series 2-way Coaxial Car Speakers + NVX SDSK2 Sound Damping

H7692_SDSK2 big
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Cerwin Vega H7692 with Sound Damping

800W Peak (110W RMS) 6x9" HED Series 2-way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 400 watts Peak Each, 55 watts RMS Each
• 1" Metallic Balanced Dome Tweeters
• Graphite-injected reinforced spun cone material
• Impedance: 4 ohm
• Sensitivity: 86.5 dB

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Fits your RX-8
64
List price $114.73
-17% $94.98

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• 400 watts Peak Each, 55 watts RMS Each
• 1" Metallic Balanced Dome Tweeters
• Graphite-injected reinforced spun cone material
• Impedance: 4 ohm
• Sensitivity: 86.5 dB

Cerwin-Vega XED57 with Installation Accessories

500W Peak (60W RMS) 5x7" XED Series 2-way 4-ohm Coaxial Speakers + 6"x8" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

XED57_ACC_KIT big
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Cerwin-Vega XED57 with Installation Accessories

500W Peak (60W RMS) 5x7" XED Series 2-way 4-ohm Coaxial Speakers + 6"x8" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

• 250 watts Peak Each, 30 watts RMS Each
• 3/4" Balanced Metal Dome Tweeters
• Curvilinear Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity:

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236
List price $136.70
-38% $84.85

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• 250 watts Peak Each, 30 watts RMS Each
• 3/4" Balanced Metal Dome Tweeters
• Curvilinear Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity:

Diamond Audio DES69C with Sound Damping

300W Peak (150W RMS) 6x9" Elite Series 2-Way Component Speaker System + NVX SDSK2 Sound Damping

DES69C_SDSK2 big
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Diamond Audio DES69C with Sound Damping

300W Peak (150W RMS) 6x9" Elite Series 2-Way Component Speaker System + NVX SDSK2 Sound Damping

• 150 watts Peak Each, 75 watts RMS Each
• 1" Aluminum Dome Tweeters
• Composite foam core carbon fiber cone material
• Impedance: 4 ohm
• Sensitivity: 84 dB

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48
List price $598.73
-27% $434.98

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• 150 watts Peak Each, 75 watts RMS Each
• 1" Aluminum Dome Tweeters
• Composite foam core carbon fiber cone material
• Impedance: 4 ohm
• Sensitivity: 84 dB

Infinity Reference REF-8632CFX with Sound Damping

360W Max (120W RMS) 6x8" Reference Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

REF8632CFXAM_SDSK2 big
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Infinity Reference REF-8632CFX with Sound Damping

360W Max (120W RMS) 6x8" Reference Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 180 watts Peak Each, 60 watts RMS Each
• 1" Textile Edge-driven Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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53
List price $178.69
-47% $94.94

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• 180 watts Peak Each, 60 watts RMS Each
• 1" Textile Edge-driven Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Jensen JS68T with Sound Damping

500W Peak (100W RMS) 5x7″ / 6x8″ Triaxial Series 3-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

JS68T_SDBSK2 big
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Jensen JS68T with Sound Damping

500W Peak (100W RMS) 5x7″ / 6x8″ Triaxial Series 3-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 250 watts Peak Each, 50 watts RMS Each
• 0.59 Piezo Balanced Dome tweeters
• Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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50
List price $98.73
$94.98

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• 250 watts Peak Each, 50 watts RMS Each
• 0.59 Piezo Balanced Dome tweeters
• Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

JVC CS-DR693 with Sound Damping

1000W Peak (140W RMS) 6x9'' DRVN Series 3-way 4-ohm Coaxial Car Speakers with Dual Tweeters + NVX SDBSK2 Premium Sound Damping

CSDR693_SDBSK2 big
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JVC CS-DR693 with Sound Damping

1000W Peak (140W RMS) 6x9'' DRVN Series 3-way 4-ohm Coaxial Car Speakers with Dual Tweeters + NVX SDBSK2 Premium Sound Damping

• 500 watts Peak Each, 70 watts RMS Each
• 19/32" dual Dome tweeters
• Polypropylene-Mica cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

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Fits your RX-8
49
List price $147.74
-49% $74.98

In stock

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• 500 watts Peak Each, 70 watts RMS Each
• 19/32" dual Dome tweeters
• Polypropylene-Mica cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

DS18 PRO-SM69.2 (Sold Individually) with Sound Damping

500W Peak (250W RMS) 6x9” PRO-SM Series 2-ohm Shallow Water-Resistant Mid-Range Loudspeaker + NVX SDBSK2 Premium Sound Damping

PROSM692_SDBSK2 big
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DS18 PRO-SM69.2 (Sold Individually) with Sound Damping

500W Peak (250W RMS) 6x9” PRO-SM Series 2-ohm Shallow Water-Resistant Mid-Range Loudspeaker + NVX SDBSK2 Premium Sound Damping

• 500 watts Peak Each, 250 watts RMS Each
• Glossy red steel basket material
• Water-Resistant Paper material
• Impedance: 2 ohm
• Sensitivity: 96 dB

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Fits your RX-8
49
List price $96.69
-21% $76.75

In stock

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• 500 watts Peak Each, 250 watts RMS Each
• Glossy red steel basket material
• Water-Resistant Paper material
• Impedance: 2 ohm
• Sensitivity: 96 dB

DS18 PRO-X694BM (Sold individually) with Sound Damping

400W Peak (200W RMS) 6x9” PRO-X Series 4-ohm Midrange Bullet Loudspeaker + NVX SDBSK2 Premium Sound Damping

PROX694BM_SDBSK2 big
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DS18 PRO-X694BM (Sold individually) with Sound Damping

400W Peak (200W RMS) 6x9” PRO-X Series 4-ohm Midrange Bullet Loudspeaker + NVX SDBSK2 Premium Sound Damping

• 400 watts Peak, 200 watts RMS
• Aluminum Bullet tweeters
• Non-Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 98 dB

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50
List price $102.69
-20% $81.85

In stock

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• 400 watts Peak, 200 watts RMS
• Aluminum Bullet tweeters
• Non-Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 98 dB

MTX TERMINATOR68 with Sound Damping

220W Peak (110W RMS) 5x7” / 6x8” Terminator Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

TERMINATOR68_SDBSK2 big
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MTX TERMINATOR68 with Sound Damping

220W Peak (110W RMS) 5x7” / 6x8” Terminator Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 110 watts Peak Each, 55 watts RMS Each
• 1" Mylar Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 87.9 dB

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49
List price $108.69
-13% $94.94

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• 110 watts Peak Each, 55 watts RMS Each
• 1" Mylar Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 87.9 dB

Hertz CPX 690 with Speaker Installation Kit

6 x 9" Cento Series 3-Way Coaxial Car Speakers with Speaker Baffles, Sound Dampening and Roller

CPX 690, SDSK2, XBAF69, SDRLR1 big
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Hertz CPX 690 with Speaker Installation Kit

6 x 9" Cento Series 3-Way Coaxial Car Speakers with Speaker Baffles, Sound Dampening and Roller

• 155 Watts Max Each, 60 Watts RMS Each
• Water repellent pressed paper cone material
• Tetolon Tweeter dome
• 4 Ohm Impedance
• Sensitivity: 94 dB
• Mounting Depth: 3-3/8"

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found car based on your search
Fits the following location in your RX-8
  • Rear Deck Corner
119
List price $673.72
-20% $536.41 /pair

In stock

Only 1 Left!

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• 155 Watts Max Each, 60 Watts RMS Each
• Water repellent pressed paper cone material
• Tetolon Tweeter dome
• 4 Ohm Impedance
• Sensitivity: 94 dB
• Mounting Depth: 3-3/8"

Hertz SX 690 NEO with Speaker Installation Kit

SPL Show Series 6"x9" 3-way car speakers with Speaker Baffles, Sound Dampening and Heavy Duty Roller

SX 690 NEO, XBAF69, SDSK2, SDRLR1 big
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Hertz SX 690 NEO with Speaker Installation Kit

SPL Show Series 6"x9" 3-way car speakers with Speaker Baffles, Sound Dampening and Heavy Duty Roller

• 3-way car speakers (pair)
• 6"x9" pressed paper woofer with weather-resistant treatment
• Built for SPL competition
• Handles up to 130 watts RMS (260 watts peak power)

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found car based on your search
Fits the following location in your RX-8
  • Rear Deck Corner
117
List price $723.72
-19% $586.41 /pair

In stock

Add to Cart

• 3-way car speakers (pair)
• 6"x9" pressed paper woofer with weather-resistant treatment
• Built for SPL competition
• Handles up to 130 watts RMS (260 watts peak power)

(2) DS18 PRO-X6M with Speaker Installation Kit

300W MAX (150W RMS) 6"x9" 2-Way Flush Mount Coaxial Speaker w/ RGB LED Lighting + 6x9” Speaker Baffles, Sound Dampening, Roller and Panel Removal Kit

HXM69F4, XBAF69, SDSK2, SDRLR1, BTK106 big
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(2) DS18 PRO-X6M with Speaker Installation Kit

300W MAX (150W RMS) 6"x9" 2-Way Flush Mount Coaxial Speaker w/ RGB LED Lighting + 6x9” Speaker Baffles, Sound Dampening, Roller and Panel Removal Kit

• 150 watts Max Each, 75 watts RMS Each
• 1" Titanium Dome Tweeters
• Injection Molded Polypropylene - IMPP cone material
• Impedance: 4 ohm
• Sensitivity: 97 dB
• Mounting Depth: 3.15"

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189
List price $612.70
$595.67 /pair

In stock

Only 1 Left!

Add to Cart

• 150 watts Max Each, 75 watts RMS Each
• 1" Titanium Dome Tweeters
• Injection Molded Polypropylene - IMPP cone material
• Impedance: 4 ohm
• Sensitivity: 97 dB
• Mounting Depth: 3.15"

Diamond Audio MS69NEO with Speaker Installation Kit

1400W Peak (700W RMS) 6X9" MS Neo Series Midrange Coaxial Speakers

MS69NEO, XBAF69, SDSK2, SDRLR1, BTK106 big
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Diamond Audio MS69NEO with Speaker Installation Kit

1400W Peak (700W RMS) 6X9" MS Neo Series Midrange Coaxial Speakers

• 700 watts Max Each, 350 watts RMS Each
• Neodymium Tweeters
• Waterproof Black DUPONT™ Kevlar Cone
• Impedance: 4 ohm
• Sensitivity: 96 dB
• Mounting Depth: 3.091"

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Save $8 on install kits for this speaker

found car based on your search
Fits the following location in your RX-8
  • Rear Deck Corner
189
List price $922.70
-5% $875.67 /pair

In stock

Only 2 Left!

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• 700 watts Max Each, 350 watts RMS Each
• Neodymium Tweeters
• Waterproof Black DUPONT™ Kevlar Cone
• Impedance: 4 ohm
• Sensitivity: 96 dB
• Mounting Depth: 3.091"

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Infinity REF697F with Installation Accessories

600W Peak (200W RMS) 6x9" Reference Series 2-way 4-ohm Speakers + 6x9" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

REF697F_ACC_KIT big
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Infinity REF697F with Installation Accessories

600W Peak (200W RMS) 6x9" Reference Series 2-way 4-ohm Speakers + 6x9" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

• 300 watts Peak Each, 100 watts RMS Each
• 1" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

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276
List price $262.66
-40% $158.73

In stock.

Add to Cart

• 300 watts Peak Each, 100 watts RMS Each
• 1" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

Diamond Audio DMD683 with Sound Damping

160W Peak (80W RMS) DMD Series 6x8" 3-way Coaxial Car Speakers + NVX SDSK2 Sound Damping

DMD683_SDSK2 big
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Diamond Audio DMD683 with Sound Damping

160W Peak (80W RMS) DMD Series 6x8" 3-way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 80 watts Peak Each, 40 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

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48
List price $188.73
-5% $179.98

In stock.

Add to Cart

• 80 watts Peak Each, 40 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

DS18 PRO-X698BM with Sound Damping

550W Peak (275W RMS) 6x9” PRO-X Series 8-ohm Mid-Range Loudspeaker + NVX SDBSK2 Premium Sound Damping

PROX698BM_SDBSK2 big
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DS18 PRO-X698BM with Sound Damping

550W Peak (275W RMS) 6x9” PRO-X Series 8-ohm Mid-Range Loudspeaker + NVX SDBSK2 Premium Sound Damping

• 550 watts Peak Each, 275 watts RMS Each
• Non-Pressed Paper cone material
• Impedance: 8 ohm
• Sensitivity: 98 dB

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Fits your RX-8
48
List price $102.69
-20% $81.85

In stock.

Add to Cart

• 550 watts Peak Each, 275 watts RMS Each
• Non-Pressed Paper cone material
• Impedance: 8 ohm
• Sensitivity: 98 dB

Hertz CX 570 with Sound Damping

420W Peak (140W RMS) 5x7" Cento Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

CX570_SDSK2 big
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Hertz CX 570 with Sound Damping

420W Peak (140W RMS) 5x7" Cento Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 210 watts Peak Each, 70 watts RMS Each
• 15/16 Tetolon Dome Tweeters
• Semi-pressed paper + Mica cone material
• Impedance: 4 ohm
• Sensitivity: 93.5 dB

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48
List price $278.74
-5% $264.98

Available

Ships in 10-14 days

Add to Cart

• 210 watts Peak Each, 70 watts RMS Each
• 15/16 Tetolon Dome Tweeters
• Semi-pressed paper + Mica cone material
• Impedance: 4 ohm
• Sensitivity: 93.5 dB

Diamond Audio DES682 with Speaker Installation Kit

200W Peak (100W RMS) 6"x8" Elite Series 2-Way Coaxial Speakers + 6x8” Speaker Baffles, Sound Dampening, Roller and Panel Removal Kit

DES682, XBAF68, SDSK2, SDRLR1, BTK106 big
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Diamond Audio DES682 with Speaker Installation Kit

200W Peak (100W RMS) 6"x8" Elite Series 2-Way Coaxial Speakers + 6x8” Speaker Baffles, Sound Dampening, Roller and Panel Removal Kit

• 100 watts Peak Each, 50 watts RMS Each
• 1" Aluminum Dome Tweeters
• Composite foam core carbon fiber cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

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152
List price $272.70
-11% $243.52 /pair

In stock.

Add to Cart

• 100 watts Peak Each, 50 watts RMS Each
• 1" Aluminum Dome Tweeters
• Composite foam core carbon fiber cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

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    Shop your 2004 RX-8
    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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