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  1. Home
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  3. Speakers with Sound Deadening

Speakers with Sound Deadening for your 2001 325Ci 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.
PRO-X Series (33)
Reference Series (24)
S Series (16)
Cento Series (14)
Mille Pro Series (12)
Primus Series (12)
XED Series (12)
A Series (11)
Kappa Series (11)
Polk DB+ Series (11)
N-Series (10)
PNW Series (10)
Punch Series (10)
V Series (10)
Prime Series (9)
ZXI Series (9)
Stage Series (8)
X Series (8)
Zeus Series (8)
G-Series (TSG) (7)
Power Series (7)
PRO Series (7)
PRO-SM Series (7)
SPL (7)
Status Series (7)
DRVN Series (6)
Elite Series (6)
GX Series (6)
Premium Series (6)
Stadium (6)
Terminator Series (6)
Thunder Series (6)
Uno Series (6)
CS Series (5)
Dieci Series (5)
EQ Series (5)
Formula Series (5)
GS Series (5)
R Series (5)
DMD Series (4)
eXcelon Series (4)
HED Series (4)
PRO-GM Series (4)
PRO-ZT Series (4)
Stroker Pro Series (4)
Apocalypse Series (3)
D-Series (3)
HEX Series (3)
Mille Legend Series (3)
NEO Series (3)
Performance Series (3)
Polk Audio MM1 Series (3)
PRO-HY Series (3)
SPL Show Series (3)
Sport Series (3)
Street Reference Pro (3)
CVL Series (2)
Diamond Elite Series (2)
Focus Series (2)
Machete Series (2)
MS Series (2)
MSPRO Series (2)
Shock Wave Series (2)
Signature Series (2)
Spike Series (2)
Thunder Dome Series (2)
TNT Series (2)
Arena Series (1)
C1 Series (1)
Club Series (1)
EXL Series (1)
Gen-X (1)
GT7 Series (1)
HXM Series (1)
MA Series (1)
MB Series (1)
MC Series (1)
MotorSport Series (1)
MX Series (1)
PK Series (1)
Prime Series (1)
PRO-FR Series (1)
PRO-NS Series (1)
Punch Pro Series (1)
Q Series (1)
Reserve Series (1)
SBL Series (1)
Stadium Series (1)
Stage 2 Series (1)
Stage 3 Series (1)
SX Series (1)
Z Series (1)
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DS18 PRO-X6M (Sold Individually) with Sound Damping

450W Peak (225W RMS) 6.5” PRO-X Series 8-ohm Mid-Range Loudspeaker + NVX SDBSK2 Premium Sound Damping

PROX6M_SDBSK2 big
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DS18 PRO-X6M (Sold Individually) with Sound Damping

450W Peak (225W RMS) 6.5” PRO-X Series 8-ohm Mid-Range Loudspeaker + NVX SDBSK2 Premium Sound Damping

• 450 watts Peak Each, 225 watts RMS Each
• Non-Pressed Paper cone material
• Impedance: 8 ohm
• Sensitivity: 92 dB

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48
List price $64.69
-13% $56.44

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• 450 watts Peak Each, 225 watts RMS Each
• Non-Pressed Paper cone material
• Impedance: 8 ohm
• Sensitivity: 92 dB

DS18 PRO-X6.4BMRGB (Sold Individually) with Sound Damping

500W Peak (250W RMS) 6.5” PRO-X Series 4-ohm Mid-Range Loudspeaker with RGB LED Bullet Tweeter + NVX SDBSK2 Premium Sound Damping

PROX64BMRGB_SDBSK2 big
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DS18 PRO-X6.4BMRGB (Sold Individually) with Sound Damping

500W Peak (250W RMS) 6.5” PRO-X Series 4-ohm Mid-Range Loudspeaker with RGB LED Bullet Tweeter + NVX SDBSK2 Premium Sound Damping

• 500 watts Peak Each, 250 watts RMS Each
• Translucid ABS Bullet tweeters
• RGB illumination on tweeters
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

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48
List price $81.69
-22% $64.00

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• 500 watts Peak Each, 250 watts RMS Each
• Translucid ABS Bullet tweeters
• RGB illumination on tweeters
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

NVX - Worth the Envy - Direct to Consumer Car Audio

Infinity Kappa 53XF (INFSPKKA53XFAM) with Installation Accessories

360W Peak (120W RMS) 5.25" Kappa Series 2-Way Coaxial Car Speakers + 5.25" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

KAPPA53XF_ACC_KIT big
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Infinity Kappa 53XF (INFSPKKA53XFAM) with Installation Accessories

360W Peak (120W RMS) 5.25" Kappa Series 2-Way Coaxial Car Speakers + 5.25" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

• 180 watts Peak Each, 60 watts RMS Each
• 1" Silk Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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230
List price $322.66
-25% $240.51

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• 180 watts Peak Each, 60 watts RMS Each
• 1" Silk Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Hertz SV 200L with Sound Damping

1000W Peak (500W RMS) 8" SPL Show Series 4-ohm component woofers + NVX SDSK2 Sound Damping

SV200L_SDSK2 big
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Hertz SV 200L with Sound Damping

1000W Peak (500W RMS) 8" SPL Show Series 4-ohm component woofers + NVX SDSK2 Sound Damping

• 500 watts Peak Each, 250 watts RMS Each
• Pulp cotton fiber cone material
• Impedance: 4 ohm
• Sensitivity: 94.5 dB

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49
List price $423.74
-14% $364.98

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• 500 watts Peak Each, 250 watts RMS Each
• Pulp cotton fiber cone material
• Impedance: 4 ohm
• Sensitivity: 94.5 dB

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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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

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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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

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

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50
List price $498.69
-7% $464.94

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

DS18 PRO-HY6MSL (Sold Individually) with Sound Damping

300W Peak (150W RMS) 6.5” PRO-HY Series Shallow Hybrid Coaxial Midrange Loudspeaker with Compression Horn Driver + NVX SDBSK2 Premium Sound Damping

PROHY6MSL_SDBSK2 big
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DS18 PRO-HY6MSL (Sold Individually) with Sound Damping

300W Peak (150W RMS) 6.5” PRO-HY Series Shallow Hybrid Coaxial Midrange Loudspeaker with Compression Horn Driver + NVX SDBSK2 Premium Sound Damping

• 300 watts Peak Each, 150 watts RMS Each
• 3" Titanium Horn tweeter
• Paper cone material
• Impedance: 8 ohm
• Sensitivity: 93 dB

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49
List price $98.69
-21% $78.45

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• 300 watts Peak Each, 150 watts RMS Each
• 3" Titanium Horn tweeter
• Paper cone material
• Impedance: 8 ohm
• Sensitivity: 93 dB

Rockford Fosgate Prime R14X2 with Sound Damping

120W Peak (60W RMS) 4” Prime Series 2-way 4-ohm Coaxial Car Speaker + NVX SDBSK2 Premium Sound Damping

R14X2_SDBSK2 big
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Rockford Fosgate Prime R14X2 with Sound Damping

120W Peak (60W RMS) 4” Prime Series 2-way 4-ohm Coaxial Car Speaker + NVX SDBSK2 Premium Sound Damping

• 60 watts Peak Each, 30 watts RMS Each
• 1/2" Silk Dome tweeters
• Vacuum polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

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62
List price $83.73
$79.98

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• 60 watts Peak Each, 30 watts RMS Each
• 1/2" Silk Dome tweeters
• Vacuum polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 85 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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48
List price $418.74
-36% $269.99

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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

Cerwin-Vega PH694 with Speaker Installation Kit

320W RMS 2-Way speaker, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit, Installer Panel Removal Tool Kit, Rubber Roller

PH694_ACC_KIT big
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Cerwin-Vega PH694 with Speaker Installation Kit

320W RMS 2-Way speaker, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit, Installer Panel Removal Tool Kit, Rubber Roller

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

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191
List price $332.70
-26% $245.67 /pair

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

DS18 PRO-X5.4M with Speaker Installation Kit

300W RMS 6x9” 4-Ohm Midrange Car Speakers + 6x9" Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

(2)PRO-ZXI694BM, XBAF69, SDSK2, SDRLR1, BTK106 big
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DS18 PRO-X5.4M with Speaker Installation Kit

300W RMS 6x9” 4-Ohm Midrange Car Speakers + 6x9" Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

• 600 watts Peak Each, 300 watts RMS Each
• Aluminum Bullet Tweeters
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 98 dB

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193
List price $292.61
-16% $245.58

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• 600 watts Peak Each, 300 watts RMS Each
• Aluminum Bullet Tweeters
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 98 dB

Hertz X690 with Sound Damping

680W Peak (170W RMS) 6x9” Uno Series 2-way Coaxial Speakers + NVX SDSK2 Sound Damping

X690_SDSK2 big
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Hertz X690 with Sound Damping

680W Peak (170W RMS) 6x9” Uno Series 2-way Coaxial Speakers + NVX SDSK2 Sound Damping

• 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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48
List price $148.74
-16% $124.98

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• 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

JBL SHOCK WAVE 150W65 (JBLSPKSW150W65) with Sound Damping

600W Peak (300W RMS) 6.5" Shock Wave Series 4-ohm Midrange Car Speakers with Sound Damping

JBLSPKSW150W65_SDBSK2 big
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JBL SHOCK WAVE 150W65 (JBLSPKSW150W65) with Sound Damping

600W Peak (300W RMS) 6.5" Shock Wave Series 4-ohm Midrange Car Speakers with Sound Damping

• 300 watts Peak Each, 150 watts RMS Each
• Pressed Pulp Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB

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53
List price $148.69
-9% $134.94

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• 300 watts Peak Each, 150 watts RMS Each
• Pressed Pulp Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB

DS18 PRO-X8.4BMRGB (Sold Individually) with Sound Damping

550W Peak (275W RMS) 8” PRO-X Series 4-ohm Mid-Range Loudspeaker with RGB LED Bullet + NVX SDBSK2 Premium Sound Damping

PROX84BMRGB_SDBSK2 big
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DS18 PRO-X8.4BMRGB (Sold Individually) with Sound Damping

550W Peak (275W RMS) 8” PRO-X Series 4-ohm Mid-Range Loudspeaker with RGB LED Bullet + NVX SDBSK2 Premium Sound Damping

• 550 watts Peak Each, 275 watts RMS Each
• Translucid ABS Bullet tweeters
• RGB illumination on tweeters
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB

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48
List price $96.69
-21% $76.75

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• 550 watts Peak Each, 275 watts RMS Each
• Translucid ABS Bullet tweeters
• RGB illumination on tweeters
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB

Infinity Kappa 63XF with Speaker Installation Kit

Kappa Series 6-1/2" 2-Way Car Speakers + Installation Accessories

INFSPKKA63XFAM, BTK106, XBAF65, SDSK2, SDRLR1 big
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Infinity Kappa 63XF with Speaker Installation Kit

Kappa Series 6-1/2" 2-Way Car Speakers + Installation Accessories

• 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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Install kits available for most vehicles

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267
List price $387.66
-24% $293.55 /pair

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

Rockford Fosgate Power T1650 with Sound Damping

300W Peak (150W RMS) 6.5" Power Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

T1650_SDBSK2 big
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Rockford Fosgate Power T1650 with Sound Damping

300W Peak (150W RMS) 6.5" Power Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 150 watts Peak Each, 75 watts RMS Each
• 1" Aluminum Dome tweeters
• Injection-molded Carbon Fiber-filled Polypropylene cone material with Vertical Attach Surround Technique (VAST)
• Impedance: 4 ohm
• Sensitivity: 88 dB

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58
List price $238.73
$234.98

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• 150 watts Peak Each, 75 watts RMS Each
• 1" Aluminum Dome tweeters
• Injection-molded Carbon Fiber-filled Polypropylene cone material with Vertical Attach Surround Technique (VAST)
• Impedance: 4 ohm
• Sensitivity: 88 dB

Hertz CX 100 with Sound Damping

240W Peak (80W RMS) 4" Cento Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

CX100_SDSK2 big
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Hertz CX 100 with Sound Damping

240W Peak (80W RMS) 4" Cento Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 120 watts Peak Each, 40 watts RMS Each
• 15/16 Tetolon Dome Tweeters
• Semi-Pressed Paper + Mica cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

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52
List price $278.74
-5% $264.98

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• 120 watts Peak Each, 40 watts RMS Each
• 15/16 Tetolon Dome Tweeters
• Semi-Pressed Paper + Mica cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

Hertz CPX 165 with Speaker Installation Kit

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

C165, XBAF65, SDRLR1, SDSK2, BTK106 big
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Hertz CPX 165 with Speaker Installation Kit

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

• 6.5" Woofers
• 4 Ohm Impedence
• 210 Watts Peak Power
• 2 Piece Foam Speaker Ring Kit
• 1.38 Square Feet of Sound Damping
• Installer Panel Removal Tool Kit
• Rubber Roller

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Free or discounted install kits when available.

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261
List price $317.71
-23% $243.52 /pair

In stock

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• 6.5" Woofers
• 4 Ohm Impedence
• 210 Watts Peak Power
• 2 Piece Foam Speaker Ring Kit
• 1.38 Square Feet of Sound Damping
• Installer Panel Removal Tool Kit
• Rubber Roller

Cerwin Vega CVMPCL6.5 with Speaker Installation Kit

100W RMS 6.5" Coaxial Speaker + 6.5" Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

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Cerwin Vega CVMPCL6.5 with Speaker Installation Kit

100W RMS 6.5" Coaxial Speaker + 6.5" Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

• 200 watts Peak Each, 100 watts RMS Each
• Impedance: 4 ohm
• Sensitivity: 93.2 dB

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Install kits available for most vehicles

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List price $327.69
-26% $243.51

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• 200 watts Peak Each, 100 watts RMS Each
• Impedance: 4 ohm
• Sensitivity: 93.2 dB

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