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  3. Speakers with Sound Deadening

Speakers with Sound Deadening for your 1985 911 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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MB Quart PK1-113 with Speaker Installation Kit

220 Watts 5.25" Premium 2-Way Coaxial Speaker (Grilles Included) + Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

PK1-113, XBAF525, SDSK2, SDRLR1, BTK106 big
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MB Quart PK1-113 with Speaker Installation Kit

220 Watts 5.25" Premium 2-Way Coaxial Speaker (Grilles Included) + Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

• 110 watts Peak Each, 55 watts RMS Each
• 1" Magnesium Dome Tweeters
• Mica Injected Polypropylene - MIPP cone material
• Impedance: 4 ohm
• Sensitivity: 85.9 dB

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149
List price $242.70
-33% $161.90 /pair

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• 110 watts Peak Each, 55 watts RMS Each
• 1" Magnesium Dome Tweeters
• Mica Injected Polypropylene - MIPP cone material
• Impedance: 4 ohm
• Sensitivity: 85.9 dB

Hertz DCX460.3 with Speaker Installation Accessories

40W RMS 4"x6” Dieci Series 2-way Coaxial Speaker with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

DCX 460.3, FRING46, SDSK2, SDRLR1, BTK106 big
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Hertz DCX460.3 with Speaker Installation Accessories

40W RMS 4"x6” Dieci Series 2-way Coaxial Speaker with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

• 80 Watts Max Each, 40 Watts RMS Each
• Water-repellent pressed paper Cone
• Woofer magnet: High density flux ferrite
• 4 Ohm Impedance
• Sensitivity: 93 dB
• Mounting Depth: 1-13/16"

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Install kits available for most vehicles

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141
List price $222.71
-26% $165.82 /pair

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• 80 Watts Max Each, 40 Watts RMS Each
• Water-repellent pressed paper Cone
• Woofer magnet: High density flux ferrite
• 4 Ohm Impedance
• Sensitivity: 93 dB
• Mounting Depth: 1-13/16"

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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122
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

Polk Audio 5.25" Coaxial Speakers with Speaker Installation Kit

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

SDSK2,DB 522 big
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Polk Audio 5.25" Coaxial Speakers with Speaker Installation Kit

600W Peak (300W RMS) 5.25" 2-Way Marine Grade Coaxial Speakers with 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: 1.74"

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61
List price $128.73
-15% $109.69 /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"

SM65F4 with Speaker Installation Kit

RPM STROKER 6.5" 4-ohm 2-way High Output Flush Mount Coaxial Speaker Set

SM65F4, SDSK2, SDRLR1, BTK106, XBAF65 big
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SM65F4 with Speaker Installation Kit

RPM STROKER 6.5" 4-ohm 2-way High Output Flush Mount Coaxial Speaker Set

• 250 watts Peak Each, 125 watts RMS Each
• 1" Titanium Dome Tweeters
• Waterproof composite paper cone material
• Impedance: 4 ohm
• Sensitivity: 95 dB

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256
List price $459.70
-23% $353.52 /pair

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• 250 watts Peak Each, 125 watts RMS Each
• 1" Titanium Dome Tweeters
• Waterproof composite paper cone material
• Impedance: 4 ohm
• Sensitivity: 95 dB

Rockford Fosgate P1650 + Free NVX Sound Deadening

220W Max (110W RMS) 6.5" 2-Way P1 Punch Series Coaxial Speakers with Sound Dampening

P1650, SDSK2 big
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Rockford Fosgate P1650 + Free NVX Sound Deadening

220W Max (110W RMS) 6.5" 2-Way P1 Punch Series Coaxial Speakers with Sound Dampening

• Peak Power: 220W
• RMS Power: 110W
• 3/4" PEI Dome Tweeter
• Mounting Depth: 2-1/4"
• Injection-Molded Carbon Fiber Filled Polypropylene Woofer Cone
• 4 Ohm Impedance
• Sensitivity: 88dB

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109
List price $128.73
-15% $109.99 /pair

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• Peak Power: 220W
• RMS Power: 110W
• 3/4" PEI Dome Tweeter
• Mounting Depth: 2-1/4"
• Injection-Molded Carbon Fiber Filled Polypropylene Woofer Cone
• 4 Ohm Impedance
• Sensitivity: 88dB

DS18 PRO-X5.4BM with Speaker Installation Kit

Includes: (2) 5.25” Mid-Range Loudspeaker with Bullet, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit

(2)PRO-X5.4BM, FRING525, SDSK2 big
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DS18 PRO-X5.4BM with Speaker Installation Kit

Includes: (2) 5.25” Mid-Range Loudspeaker with Bullet, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit

• 300 watts Max
• 150 watts RMS
• Non-Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 92.7 dB
• Mounting Depth: 2.6"

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50
List price $138.63
-15% $118.08

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• 300 watts Max
• 150 watts RMS
• Non-Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 92.7 dB
• Mounting Depth: 2.6"

DS18 PRO-X6M with Speaker Installation Kit

Includes: (2) 6.5” Mid-Range Loudspeaker with Bullet, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit

(2) PRO-X6BM, FRING65, SDSK2 big
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DS18 PRO-X6M with Speaker Installation Kit

Includes: (2) 6.5” Mid-Range Loudspeaker with Bullet, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit

• 500 watts Max
• 250 watts RMS
• Non-Pressed Paper cone material
• Impedance: 8 ohm
• Sensitivity: 90 dB
• Mounting Depth: 2.44"

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263
List price $178.61
-18% $147.16

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• 500 watts Max
• 250 watts RMS
• Non-Pressed Paper cone material
• Impedance: 8 ohm
• Sensitivity: 90 dB
• Mounting Depth: 2.44"

DS18 PRO-X6.4BMSLIM with Speaker Installation Kit

(2) 6.5” Mid-Range Loudspeakers + 6.5"Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

(2) PRO-X6.4BMSL, FRING65, SDSK2, SDRLR1, BTK106 big
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DS18 PRO-X6.4BMSLIM with Speaker Installation Kit

(2) 6.5” Mid-Range Loudspeakers + 6.5"Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

• 500 watts Peak
• 250 watts RMS
• Non-Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB
• Mounting Depth: 2.15"

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184
List price $178.61
-18% $146.44

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• 500 watts Peak
• 250 watts RMS
• Non-Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB
• Mounting Depth: 2.15"

DS18 ZXI-654 with Speaker Installation Kit

Includes: (Pair) 6.5” Coaxial Speakers, 2 Piece Foam Speaker Ring Kit, Sound Damping , Roller and Panel Removal Kit

ZXI-654, XBAF65, SDSK2, SDRLR1, BTK106 big
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DS18 ZXI-654 with Speaker Installation Kit

Includes: (Pair) 6.5” Coaxial Speakers, 2 Piece Foam Speaker Ring Kit, Sound Damping , Roller and Panel Removal Kit

• 240 watts Max Each, 80 watts RMS Each
• 1" PEI (Polyetherimide) Dome Tweeters
• Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 89dB dB
• Mounting Depth: 2.36"

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256
List price $182.66
-24% $138.55 /pair

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• 240 watts Max Each, 80 watts RMS Each
• 1" PEI (Polyetherimide) Dome Tweeters
• Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 89dB dB
• Mounting Depth: 2.36"

JBL Stage 3 527 with Speaker Installation Kit

180W Peak (60W RMS) 5-1/4” Stage3 Series 2-Way 3-Ohm Coaxial Car Speakers + NVX Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

Stage3 527, XBAF525, SDSK2, SDRLR1, BTK106 big
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JBL Stage 3 527 with Speaker Installation Kit

180W Peak (60W RMS) 5-1/4” Stage3 Series 2-Way 3-Ohm Coaxial Car Speakers + NVX Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

• 90 watts Max Each, 30 watts RMS Each
• PEI (Polyetherimide) Dome Tweeters
• Injection Molded Polypropylene - IMPP cone material
• Impedance: 3 ohm
• Sensitivity: 91 dB @2.83V
• Mounting Depth: 2-3/16"

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151
List price $182.66
-40% $109.98 /pair

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• 90 watts Max Each, 30 watts RMS Each
• PEI (Polyetherimide) Dome Tweeters
• Injection Molded Polypropylene - IMPP cone material
• Impedance: 3 ohm
• Sensitivity: 91 dB @2.83V
• Mounting Depth: 2-3/16"

Lowest price in 30 days

MTX Audio THUNDER65 with Speaker Installation Kit

240W Peak (120W RMS) 6.5" 2-Way Thunder Series Coaxial Speakers w/ Silk Tweeters + NVX Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

THUNDER65, XBAF65, SDSK2, SDRLR1, BTK106 big
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MTX Audio THUNDER65 with Speaker Installation Kit

240W Peak (120W RMS) 6.5" 2-Way Thunder Series Coaxial Speakers w/ Silk Tweeters + NVX Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

• 120 watts Peak Each, 60 watts RMS Each
• 1" pivoting Silk Soft Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

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259
List price $257.70
-46% $139.32 /pair

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• 120 watts Peak Each, 60 watts RMS Each
• 1" pivoting Silk Soft Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

Alpine R2-S65C with Speaker Installation Kit

600W Peak 6.5" 2-Way Component Speakers + 6.5" Speaker Baffles + Sound Dampening, Roller and Panel Removal Kit

R2S65C_ACC_KIT big
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Alpine R2-S65C with Speaker Installation Kit

600W Peak 6.5" 2-Way Component Speakers + 6.5" Speaker Baffles + Sound Dampening, Roller and Panel Removal Kit

• 300 watts Peak Each, 100 watts RMS Each
• 1" Magnesium Hard Dome Tweeters
• Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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257
List price $567.71
-36% $363.48 /set

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• 300 watts Peak Each, 100 watts RMS Each
• 1" Magnesium Hard Dome Tweeters
• Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Lowest price in 30 days

MTX THUNDER52 with Installation Accessories

90W RMS 5.25" 2-Way Coaxial Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

THUNDER52, XBAF525, SDSK2, SDRLR1, BTK106 big
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MTX THUNDER52 with Installation Accessories

90W RMS 5.25" 2-Way Coaxial Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

• 90 watts Peak Each, 45 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

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151
List price $192.66
-30% $135.82 /pair

In stock

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• 90 watts Peak Each, 45 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

Polk Audio DB462 with Installation Accessories

100W RMS 4"x6” 2-way Car & Marine Coaxial Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

DB462, FRING46, SDSK2, SDRLR1, BTK106 big
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Polk Audio DB462 with Installation Accessories

100W RMS 4"x6” 2-way Car & Marine Coaxial Speakers 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: 4 ohm
• Sensitivity: 90 dB

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148
List price $172.70
-27% $125.83 /pair

In stock

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• 150 watts Peak Each, 50 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

NVX VSP525 with Installation Accessories

5-1/4" V-Series Coaxial Car Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

VSP525, XBAF525, SDSK2, SDRLR1 big
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NVX VSP525 with Installation Accessories

5-1/4" V-Series Coaxial Car Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

• Peak Power: 240W each
• RMS Power: 80W each
• Stamped Steel Basket
• 4 Ohm Impedance
• Polypropylene Cone
• Nitrile Butadiene Rubber Surround
• 25mm Silk Dome Tweeter

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172
List price $168.70
-29% $119.85 /pair

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• Peak Power: 240W each
• RMS Power: 80W each
• Stamped Steel Basket
• 4 Ohm Impedance
• Polypropylene Cone
• Nitrile Butadiene Rubber Surround
• 25mm Silk Dome Tweeter

DS18 GEN-X4.6 (Pair) with Speaker Installation Kit

Includes : (2) 6.5” Mid-Range Loudspeaker with Bullet, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit

(2)PRO-X6M, FRING65, SDSK2 big
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DS18 GEN-X4.6 (Pair) with Speaker Installation Kit

Includes : (2) 6.5” Mid-Range Loudspeaker with Bullet, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit

• 225W RMS 6.5” PRO-X Series Speakers
2 Piece Foam Speaker Ring Kit
• 1.38 Square Feet of Sound Damping

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91
List price $130.63
-12% $114.98

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Only 3 Left!

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• 225W RMS 6.5” PRO-X Series Speakers
2 Piece Foam Speaker Ring Kit
• 1.38 Square Feet of Sound Damping

Diamond Audio MP654 with Speaker Installation Kit

Includes: (2) 6.5" Full-range speaker, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit, Installer Panel Removal Tool Kit, Rubber Roller

MP654, XBAF65, SDRLR1, SDSK2, BTK106 big
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Diamond Audio MP654 with Speaker Installation Kit

Includes: (2) 6.5" Full-range speaker, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit, Installer Panel Removal Tool Kit, Rubber Roller

• 300 watts Max Each, 150 watts RMS Each
• 1" Horn Tweeters
• Impedance: N/A
• Sensitivity: 101 dB
• Mounting Depth: 3.33"

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259
List price $527.70
-8% $483.52 /pair

In stock

Only 3 Left!

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• 300 watts Max Each, 150 watts RMS Each
• 1" Horn Tweeters
• Impedance: N/A
• Sensitivity: 101 dB
• Mounting Depth: 3.33"

Hertz MLK700.3 with Speaker Installation Kit

Includes: (2) 6.5" 2-Way speaker, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit, Installer Panel Removal Tool Kit, Rubber Roller

CPX 165, XBAF65, SDRLR1, SDSK2, BTK106 big
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Hertz MLK700.3 with Speaker Installation Kit

Includes: (2) 6.5" 2-Way speaker, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit, Installer Panel Removal Tool Kit, Rubber Roller

• 140 Watts Max Each, 45 Watts RMS Each
• 2 Piece Foam Speaker Ring Kit
• 1.38 Square Feet of Sound Damping
• Installer Panel Removal Tool Kit
• Rubber Roller

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259
List price $492.71
-20% $393.52

In stock

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• 140 Watts Max Each, 45 Watts RMS Each
• 2 Piece Foam Speaker Ring Kit
• 1.38 Square Feet of Sound Damping
• Installer Panel Removal Tool Kit
• Rubber Roller

MTX TERMINATOR6S with Speaker Installation Kit

6.5" 2-Way 45W RMS Car Audio Component Speakers with Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

TERMINATOR6S, XBAF65, SDSK2, SDRLR1, BTK106 big
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MTX TERMINATOR6S with Speaker Installation Kit

6.5" 2-Way 45W RMS Car Audio Component Speakers with Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

• RMS Power (Watts): 45
• Peak Power (Watts): 90
• Shallow Mounting Depth
• Sensitivity: 85.5dB (2.83V/1m)
• Impedance: 4Ω
• Frequency Response: 62Hz - 20kHz

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256
List price $187.66
-29% $133.48 /set

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Only 2 Left!

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• RMS Power (Watts): 45
• Peak Power (Watts): 90
• Shallow Mounting Depth
• Sensitivity: 85.5dB (2.83V/1m)
• Impedance: 4Ω
• Frequency Response: 62Hz - 20kHz

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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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