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  3. Speakers with Sound Deadening

Speakers with Sound Deadening for your 1981 Thunderbird 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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1981 Thunderbird
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Hertz CK 130 with Speaker Installation Kit

Includes: (2) 6" x 9" 3-Way speaker, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit, Installer Panel Removal Tool Kit, Rubber Roller

DCX 690.3, XBAF69, SDRLR1, SDSK2, BTK106 big
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Hertz CK 130 with Speaker Installation Kit

Includes: (2) 6" x 9" 3-Way speaker, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit, Installer Panel Removal Tool Kit, Rubber Roller

• 90 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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Install kits available for most vehicles

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Fits the following location in your Thunderbird
  • Rear Deck Corner
161
List price $323.71
-22% $251.40

In stock

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• 90 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

JBL GX608C (GX608CAM) with Sound Damping

420W Peak (140W RMS) 6.5” GX Series 2-way 2.3-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

GX608C_SDBSK2 big
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JBL GX608C (GX608CAM) with Sound Damping

420W Peak (140W RMS) 6.5” GX Series 2-way 2.3-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

• 210 watts Peak Each, 70 watts RMS Each
• Edge Driven Dome tweeters
• Polypropylene cone material
• Impedance: 2.3 ohm
• Sensitivity: 92 dB

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Fits your Thunderbird
55
List price $138.69
$134.94

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• 210 watts Peak Each, 70 watts RMS Each
• Edge Driven Dome tweeters
• Polypropylene cone material
• Impedance: 2.3 ohm
• Sensitivity: 92 dB

NVX - Worth the Envy - Direct to Consumer Car Audio

Pioneer TS-A6971F with Sound Damping

1200W Peak (200W RMS) 6x9" A-Series 4-way 4-ohm Coaxial Car Speakers with Dual Tweeters + NVX SDBSK2 Premium Sound Damping

TSA6971F_SDBSK2 big
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Pioneer TS-A6971F with Sound Damping

1200W Peak (200W RMS) 6x9" A-Series 4-way 4-ohm Coaxial Car Speakers with Dual Tweeters + NVX SDBSK2 Premium Sound Damping

• 600 watts Peak Each, 100 watts RMS Each
• 3/4" and 3/8" Polyetherimide Hard Dome tweeters
• 2-1/4" Cellulose Fiber midrange cone
• Carbon and Mica Reinforced Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

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Fits your Thunderbird
50
List price $148.74
-16% $124.99

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• 600 watts Peak Each, 100 watts RMS Each
• 3/4" and 3/8" Polyetherimide Hard Dome tweeters
• 2-1/4" Cellulose Fiber midrange cone
• Carbon and Mica Reinforced Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

Diamond Audio MP654 with Sound Damping

300W Peak (150W RMS) 6.5" Motorsport Series PRO Full-Range Co-Ax Horn Speaker - Pair + NVX SDSK2 Sound Damping

MP654_SDSK2 big
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Diamond Audio MP654 with Sound Damping

300W Peak (150W RMS) 6.5" Motorsport Series PRO Full-Range Co-Ax Horn Speaker - Pair + NVX SDSK2 Sound Damping

• 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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Fits your Thunderbird
51
List price $458.73
$454.98

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 MLK165.3 with Sound Damping

300W Peak (150W RMS) 6.5" Mille Legend Series 2-Way 4 Ohm component speaker system + NVX SDSK2 Sound Damping

MLK1653_SDSK2 big
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Hertz MLK165.3 with Sound Damping

300W Peak (150W RMS) 6.5" Mille Legend Series 2-Way 4 Ohm component speaker system + NVX SDSK2 Sound Damping

• 150 Watts Max Each, 75 Watts RMS Each
• Pressed-pulp cone with cotton fibers cone material
• Tetolon Tweeter Dome
• 4 Ohm Impedance
• Sensitivity: 91 dB

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Fits your Thunderbird
48
List price $1193.74
-11% $1,064.98

In stock

Only 3 Left!

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• 150 Watts Max Each, 75 Watts RMS Each
• Pressed-pulp cone with cotton fibers cone material
• Tetolon Tweeter Dome
• 4 Ohm Impedance
• Sensitivity: 91 dB

Diamond Audio H65S with Sound Damping

300W Peak (150W RMS) 6.5" HEX Series 2-Way Component Speaker System + NVX SDSK2 Sound Damping

H65S_SDSK2 big
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Diamond Audio H65S with Sound Damping

300W Peak (150W RMS) 6.5" HEX Series 2-Way Component Speaker System + NVX SDSK2 Sound Damping

• 150 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Anodized Aluminum cone material
• Impedance: 4 ohm
• Sensitivity: 88.3 dB

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48
$784.98

In stock.

Add to Cart

• 150 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Anodized Aluminum cone material
• Impedance: 4 ohm
• Sensitivity: 88.3 dB

Hertz C 165 with Sound Damping

420W Peak (140W RMS) 6.5" Cento Series Mid-Bass Woofer + NVX SDSK2 Sound Damping

C165_SDSK2 big
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Hertz C 165 with Sound Damping

420W Peak (140W RMS) 6.5" Cento Series Mid-Bass Woofer + NVX SDSK2 Sound Damping

• 210 watts Peak Each, 70 watts RMS Each
• semi-pressed paper cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

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52
List price $248.74
-14% $214.98

In stock

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• 210 watts Peak Each, 70 watts RMS Each
• semi-pressed paper cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

Infinity Kappa 63XF with Sound Damping

510W Peak (170W RMS) 6.5" Kappa Series 2-Way Coaxial Speakers with Silk Dome Tweeters + NVX SDSK2 Sound Damping

KAPPA63XF_SDSK2 big
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Infinity Kappa 63XF with Sound Damping

510W Peak (170W RMS) 6.5" Kappa Series 2-Way Coaxial Speakers with Silk Dome Tweeters + NVX SDSK2 Sound Damping

• 255 watts Peak Each, 85 watts RMS Each
• Silk Dome Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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Fits your Thunderbird
58
List price $318.69
-33% $214.94

In stock

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• 255 watts Peak Each, 85 watts RMS Each
• Silk Dome Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Kenwood KFC-415C with Sound Damping

320W Peak (80W RMS) 4x10" Performance Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

KFC415C_SDBSK2 big
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Kenwood KFC-415C with Sound Damping

320W Peak (80W RMS) 4x10" Performance Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 160 watts Peak Each, 40 watts RMS Each
• 2-3/8" Polymide Balanced Dome tweeters
• Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

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Fits your Thunderbird
73
List price $198.74
-45% $109.49

In stock

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• 160 watts Peak Each, 40 watts RMS Each
• 2-3/8" Polymide Balanced Dome tweeters
• Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

Pioneer TS-Z65CH with Sound Damping

660W Peak (220W RMS) 6.5" Z-Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

TSZ65CH_SDBSK2 big
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Pioneer TS-Z65CH with Sound Damping

660W Peak (220W RMS) 6.5" Z-Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

• 330 watts Peak Each, 110 watts RMS Each
• 1.14" Aluminum Alloy Balanced Dome tweeters
• IMPP - Aramid Fiber and Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

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Fits your Thunderbird
48
List price $418.74
-36% $269.99

In stock

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• 330 watts Peak Each, 110 watts RMS Each
• 1.14" Aluminum Alloy Balanced Dome tweeters
• IMPP - Aramid Fiber and Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

Kenwood XR- with Sound Damping

600W Peak (200W RMS) 6.5" Excelon Series 2-way 3-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

XR1701_SDBSK2 big
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Kenwood XR- with Sound Damping

600W Peak (200W RMS) 6.5" Excelon Series 2-way 3-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 300 watts Peak Each, 100 watts RMS Each
• Hi-Res Audio-certified
• 1-3/16" Titanium Hard Dome tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 87 dB

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Fits your Thunderbird
51
List price $308.74
-39% $189.49

In stock

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• 300 watts Peak Each, 100 watts RMS Each
• Hi-Res Audio-certified
• 1-3/16" Titanium Hard Dome tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 87 dB

Hertz X690 with Installation Accessories

680W Peak (170W RMS) 6x9” Uno Series 2-way Coaxial Speakers + 6"x9" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

X690_ACC_KIT big
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Hertz X690 with Installation Accessories

680W Peak (170W RMS) 6x9” Uno Series 2-way Coaxial Speakers + 6"x9" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

• 340 watts Peak Each, 85 watts RMS Each
• 3/4" Neodymium Dome Tweeters
• Water Resistance Paper Cone cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

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Fits your Thunderbird
234
List price $202.71
-26% $149.85

In stock

Add to Cart

• 340 watts Peak Each, 85 watts RMS Each
• 3/4" Neodymium Dome Tweeters
• Water Resistance Paper Cone cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

Diamond Audio DES65C with Sound Damping

240W Peak (120W RMS) 6.5" DES Series 2-Way Component Speaker System + NVX SDSK2 Sound Damping

DES65C_SDSK2 big
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Diamond Audio DES65C with Sound Damping

240W Peak (120W RMS) 6.5" DES Series 2-Way Component Speaker System + NVX SDSK2 Sound Damping

• 60 watts RMS Each
• 1" Aluminum Dome Tweeters
• Composite foam core carbon fiber cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

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Fits your Thunderbird
48
$374.98

In stock

Only 3 Left!

Add to Cart

• 60 watts RMS Each
• 1" Aluminum Dome Tweeters
• Composite foam core carbon fiber cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

Limited time!

NVX VSP69KIT with Sound Damping

900W Peak (300W RMS) 6x9" V-Series 2-Way Component Speaker System with 25mm Silk Dome Tweeters + NVX SDBSK2 Premium Sound Damping

VSP69KIT_SDBSK2 big
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NVX VSP69KIT with Sound Damping

900W Peak (300W RMS) 6x9" V-Series 2-Way Component Speaker System with 25mm Silk Dome Tweeters + NVX SDBSK2 Premium Sound Damping

• 450 watts Peak Each, 150 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB
• Mounting Depth: 3.14"

Purchase $400 or More of NVX and Save 15%!
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Fits your Thunderbird
48
List price $174.73
-25% $130.48

In stock

Add to Cart

• 450 watts Peak Each, 150 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB
• Mounting Depth: 3.14"

Limited time!

NVX XSP692 with Sound Damping

900W Peak (300W) RMS X-Series 6x9" 2-Way Coaxial Speakers with Carbon Fiber Cones and 25mm Silk Dome Tweeters + NVX SDBSK2 Premium Sound Damping

XSP692_SDBSK2 big
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NVX XSP692 with Sound Damping

900W Peak (300W) RMS X-Series 6x9" 2-Way Coaxial Speakers with Carbon Fiber Cones and 25mm Silk Dome Tweeters + NVX SDBSK2 Premium Sound Damping

• 450 watts Max Each, 150 watts RMS Each
• 1" Silk Dome Tweeters
• Lightweight Carbon Fiber cone
• Impedance: 4 ohm
• Sensitivity: 92 dB
• Mounting Depth: 3.07"

Purchase $400 or More of NVX and Save 15%!
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Fits your Thunderbird
63
List price $210.73
-33% $140.48

In stock

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• 450 watts Max Each, 150 watts RMS Each
• 1" Silk Dome Tweeters
• Lightweight Carbon Fiber cone
• Impedance: 4 ohm
• Sensitivity: 92 dB
• Mounting Depth: 3.07"

Infinity KAPPA 693C with Installation Accessories

435W Peak (145W RMS) Kappa Series 6x9” Component Speaker System + 6x9" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

KAPPA693CF_ACC_KIT big
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Infinity KAPPA 693C with Installation Accessories

435W Peak (145W RMS) Kappa Series 6x9” Component Speaker System + 6x9" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

• 435 watts Peak Each, 145 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

Save 15% Off Package Deals at Checkout!
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Fits your Thunderbird
269
List price $642.66
-30% $446.73

In stock

Only 1 Left!

Add to Cart

• 435 watts Peak Each, 145 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

JBL Stadium 62CF (JBLSPKSD62CFAM) with Sound Damping

660W Peak (220W RMS) 6.5" Stadium Series 2-way 3-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

STADIUM62CF_SDBSK2 big
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JBL Stadium 62CF (JBLSPKSD62CFAM) with Sound Damping

660W Peak (220W RMS) 6.5" Stadium Series 2-way 3-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

• 330 watts Peak Each, 110 watts RMS Each
• 3/4" Aluminum Dome Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Save 15% Off Package Deals at Checkout!
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Fits your Thunderbird
50
List price $498.69
-7% $464.94

In stock

Add to Cart

• 330 watts Peak Each, 110 watts RMS Each
• 3/4" Aluminum Dome Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Hertz MPK1650.3 with Sound Damping

250W Peak (125W RMS) 6.5" Mille PRO Series 2-Way 3 Ohm Component speaker system + NVX SDSK2 Sound Damping

MPK16503_SDSK2 big
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Hertz MPK1650.3 with Sound Damping

250W Peak (125W RMS) 6.5" Mille PRO Series 2-Way 3 Ohm Component speaker system + NVX SDSK2 Sound Damping

• 125 Watts Max Each, 25 Watts RMS Each
• Pressed-pulp cone with cotton fibers cone material
• Tetolon Tweeter Dome
• 3 Ohm Impedance
• Sensitivity: 93 dB

Save 15% Off Package Deals at Checkout!
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Fits your Thunderbird
49
List price $958.74
-15% $814.98

In stock

Only 2 Left!

Add to Cart

• 125 Watts Max Each, 25 Watts RMS Each
• Pressed-pulp cone with cotton fibers cone material
• Tetolon Tweeter Dome
• 3 Ohm Impedance
• Sensitivity: 93 dB

Hertz ML1650.3 with Sound Damping

600W Peak (300W RMS) 6.5" Mille Legend Series 4 Ohm Woofers + Grille + NVX SDSK2 Sound Damping

ML16503_SDSK2 big
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Hertz ML1650.3 with Sound Damping

600W Peak (300W RMS) 6.5" Mille Legend Series 4 Ohm Woofers + Grille + NVX SDSK2 Sound Damping

• 600 Watts Max, 300 Watts RMS
• Pressed-pulp cone with cotton fibers cone material
• Neodymium Magnet
• 4 Ohm Impedance
• Sensitivity: 93 dB

Save 15% Off Package Deals at Checkout!
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Fits your Thunderbird
48
List price $1078.74
-6% $1,014.98

In stock

Add to Cart

• 600 Watts Max, 300 Watts RMS
• Pressed-pulp cone with cotton fibers cone material
• Neodymium Magnet
• 4 Ohm Impedance
• Sensitivity: 93 dB

Cerwin-Vega PH654 with Sound Damping

600W Peak (300W RMS) 6.5" PRO Series Full-Range Coaxial Car Speakers + NVX SDSK2 Sound Damping

PH654_SDSK2 big
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Cerwin-Vega PH654 with Sound Damping

600W Peak (300W RMS) 6.5" PRO Series Full-Range Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 300 Watts, 150 Watts RMS
•1.50” Double Layer High Temp Voice Coil
• BlackCoated Voice Coil former
• Advanced Voice Coil Heat Sink Design

Save 15% Off Package Deals at Checkout!
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Fits your Thunderbird
50
List price $246.73
-17% $204.98

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Add to Cart

• 300 Watts, 150 Watts RMS
•1.50” Double Layer High Temp Voice Coil
• BlackCoated Voice Coil former
• Advanced Voice Coil Heat Sink Design

NVX - Worth the Envy - Direct to Consumer Car Audio
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    • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
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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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