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  3. Speakers with Sound Deadening

Speakers with Sound Deadening for your 1980 733i 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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1980 733i
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Alpine S2-S50 with Sound Damping

340W Peak (110W RMS) 5.25" S-Series 2-way Coaxial Car Speakers + NVX SDSK2 Sound Damping

S2S50_SDSK2 big
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Alpine S2-S50 with Sound Damping

340W Peak (110W RMS) 5.25" S-Series 2-way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 170 watts Peak Each, 55 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

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86
List price $178.74
-19% $144.94

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• 170 watts Peak Each, 55 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

MB Quart PK1-113 with Sound Damping

220W Peak (110W RMS) 5.25" Premium Series 2-way 4-ohm Coaxial Speaker + NVX SDBSK2 Premium Sound Damping

PK1113_SDBSK2 big
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MB Quart PK1-113 with Sound Damping

220W Peak (110W RMS) 5.25" Premium Series 2-way 4-ohm Coaxial Speaker + NVX SDBSK2 Premium Sound Damping

• 110 watts Peak Each, 55 watts RMS Each
• 1" Magnesium Dome tweeters with tunable waveguide housing
• Lightweight Aerated Pop Paper with Mica Blend cone material
• Impedance: 4 ohm
• Sensitivity: 85.9 dB

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48
List price $188.73
-27% $136.86

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• 110 watts Peak Each, 55 watts RMS Each
• 1" Magnesium Dome tweeters with tunable waveguide housing
• Lightweight Aerated Pop Paper with Mica Blend cone material
• Impedance: 4 ohm
• Sensitivity: 85.9 dB

NVX - Worth the Envy - Direct to Consumer Car Audio

Pioneer TS-A1301C with Sound Damping

600W Peak (100W RMS) 5.25" A-Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

TSA1301C_SDBSK2 big
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Pioneer TS-A1301C with Sound Damping

600W Peak (100W RMS) 5.25" A-Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

• 300 watts Peak Each, 50 watts RMS Each
• 1-3/16" Polyetherimide Hard Dome tweeters
• Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

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48
List price $188.74
-18% $154.99

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• 300 watts Peak Each, 50 watts RMS Each
• 1-3/16" Polyetherimide Hard Dome tweeters
• Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

Diamond Audio DMD52 with Sound Damping

160W Peak (80W RMS) 5.25" DMD Series 2-way Coaxial Car Speakers + NVX SDSK2 Sound Damping

DMD52_SDSK2 big
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Diamond Audio DMD52 with Sound Damping

160W Peak (80W RMS) 5.25" DMD Series 2-way Coaxial Car Speakers + NVX SDSK2 Sound Damping

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

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48
List price $138.73
-10% $124.98

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

Hertz K 130 with Sound Damping

440W Peak (110W RMS) 5.25” Uno Series Component Speakers + NVX SDSK2 Sound Damping

K130_SDSK2 big
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Hertz K 130 with Sound Damping

440W Peak (110W RMS) 5.25” Uno Series Component Speakers + NVX SDSK2 Sound Damping

• 110 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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49
List price $168.74
-32% $114.98

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

JBL GT7-5C with Sound Damping

270W Peak (90W RMS) 5.25" GT7-Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

GT75C_SDBSK2 big
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JBL GT7-5C with Sound Damping

270W Peak (90W RMS) 5.25" GT7-Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

• 135 watts Peak Each, 45 watts RMS Each
• 1-3/16" Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

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51
List price $168.69
-20% $134.94

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• 135 watts Peak Each, 45 watts RMS Each
• 1-3/16" Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

JVC CS-DR521 with Sound Damping

520W Peak (80W RMS) 5.25'' DRVN Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

CSDR521_SDBSK2 big
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JVC CS-DR521 with Sound Damping

520W Peak (80W RMS) 5.25'' DRVN Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 260 watts Peak Each, 40 watts RMS Each
• 1" Polyetherimide Balanced Dome tweeters with small cover
• Robust and lightweight Carbon Mica cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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48
List price $137.74
-17% $113.99

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• 260 watts Peak Each, 40 watts RMS Each
• 1" Polyetherimide Balanced Dome tweeters with small cover
• Robust and lightweight Carbon Mica cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Limited time!

NVX VSP525KIT with Sound Damping

750W Peak (250W RMS) 5.25" V-Series 2-Way Component Speaker System with 25mm Silk Dome Tweeters + NVX SDBSK2 Premium Sound Damping

VSP525KIT_SDBSK2 big
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NVX VSP525KIT with Sound Damping

750W Peak (250W RMS) 5.25" V-Series 2-Way Component Speaker System with 25mm Silk Dome Tweeters + NVX SDBSK2 Premium Sound Damping

• 375 watts Peak Each, 125 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB
• Mounting Depth: 2.04"

Purchase $400 or More of NVX and Save 15%!
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75
List price $138.73
-20% $110.48

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• 375 watts Peak Each, 125 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB
• Mounting Depth: 2.04"

Rockford Fosgate Punch P142 with Sound Damping

120W Peak (60W RMS) 4" Punch Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

09-P142_SDBSK2 big
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Rockford Fosgate Punch P142 with Sound Damping

120W Peak (60W RMS) 4" Punch Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 60 watts Peak Each, 30 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Injection-molded mineral-filled polypropylene cone material with VAST technology
• Impedance: 4 ohm
• Sensitivity: 86.5 dB

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59
List price $128.73
$124.98

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• 60 watts Peak Each, 30 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Injection-molded mineral-filled polypropylene cone material with VAST technology
• Impedance: 4 ohm
• Sensitivity: 86.5 dB

Cerwin Vega H746 with Sound Damping

550W Max (60W RMS) 4x6" HED Series 2-way Coaxial Car speakers + NVX SDSK2 Sound Damping

H746_SDSK2 big
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Cerwin Vega H746 with Sound Damping

550W Max (60W RMS) 4x6" HED Series 2-way Coaxial Car speakers + NVX SDSK2 Sound Damping

• 275 watts Peak Each, 30 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome Tweeters
• Graphite-injected reinforced spun cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

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57
List price $78.73
-5% $74.98

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• 275 watts Peak Each, 30 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome Tweeters
• Graphite-injected reinforced spun cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

Hifonics ZS46CX with Installation Accessories

400W Peak (80W RMS) Zeus Series 4x6" Zeus Series 2-Way Coaxial Car Speakers + 4"x6" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

ZS46CX_ACC_KIT big
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Hifonics ZS46CX with Installation Accessories

400W Peak (80W RMS) Zeus Series 4x6" Zeus Series 2-Way Coaxial Car Speakers + 4"x6" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

• 200 Watts Max Each, 40 Watts RMS Each
• 1" Neo-Mylar Soft Dome Tweeter
• Alpha-Cellulose mid-woofer cone material
• 4 Ohm Impedance
• Sensitivity: 88dB
• CEA-426B compliant speakers

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245
List price $97.70
-41% $57.36

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• 200 Watts Max Each, 40 Watts RMS Each
• 1" Neo-Mylar Soft Dome Tweeter
• Alpha-Cellulose mid-woofer cone material
• 4 Ohm Impedance
• Sensitivity: 88dB
• CEA-426B compliant speakers

MB Quart FKB 113 (FKB113) with Sound Damping

180W Peak (90W RMS) 5.25" Formula Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

FKB113_SDBSK2 big
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MB Quart FKB 113 (FKB113) with Sound Damping

180W Peak (90W RMS) 5.25" Formula Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 90 watts Peak Each, 45 watts RMS Each
• 1" Aluminum Dome tweeters
• Thermoformed Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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52
List price $88.73
-49% $44.98

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• 90 watts Peak Each, 45 watts RMS Each
• 1" Aluminum Dome tweeters
• Thermoformed Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

DS18 PRO-X5.4BM (Sold Individually) with Sound Damping

300W Peak (150W RMS) 5.25” PRO-X Series 4-ohm Mid-Range Loudspeaker + NVX SDBSK2 Premium Sound Damping

PROX54BM_SDBSK2 big
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DS18 PRO-X5.4BM (Sold Individually) with Sound Damping

300W Peak (150W RMS) 5.25” PRO-X Series 4-ohm Mid-Range Loudspeaker + NVX SDBSK2 Premium Sound Damping

• 300 watts Peak Each, 150 watts RMS Each
• Red Aluminum Bullet tweeters
• Non-Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

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Fits your 733i
48
List price $68.69
-12% $60.44

In stock

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• 300 watts Peak Each, 150 watts RMS Each
• Red Aluminum Bullet tweeters
• Non-Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

MTX TERMINATOR5 with Sound Damping

140W Peak (70W RMS) 5.25" Terminator Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

TERMINATOR5_SDBSK2 big
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MTX TERMINATOR5 with Sound Damping

140W Peak (70W RMS) 5.25" Terminator Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 70 watts Peak Each, 35 watts RMS Each
• Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 85.3 dB

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48
List price $88.69
-16% $74.94

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• 70 watts Peak Each, 35 watts RMS Each
• Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 85.3 dB

Limited time!

NVX NSP525 with Sound Damping

240W Peak (160W RMS) 5.25" N-Series 2-Way Coaxial Car Speakers with 20mm Silk Dome Tweeters + NVX SDBSK2 Premium Sound Damping

NSP525_SDBSK2 big
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NVX NSP525 with Sound Damping

240W Peak (160W RMS) 5.25" N-Series 2-Way Coaxial Car Speakers with 20mm Silk Dome Tweeters + NVX SDBSK2 Premium Sound Damping

• 240 watts Peak Each, 80 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB
• Mounting Depth: 1.96"

Purchase $400 or More of NVX and Save 15%!
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Fits your 733i
75
List price $84.73
-17% $69.98

In stock

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• 240 watts Peak Each, 80 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB
• Mounting Depth: 1.96"

Limited time!

NVX VSP525 with Sound Damping

480W Peak (160W RMS) 5.25" V-Series 2-Way Coaxial Speakers with 25mm Silk Dome Tweeters + NVX SDBSK2 Premium Sound Damping

VSP525_SDBSK2 big
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NVX VSP525 with Sound Damping

480W Peak (160W RMS) 5.25" V-Series 2-Way Coaxial Speakers with 25mm Silk Dome Tweeters + NVX SDBSK2 Premium Sound Damping

• 240 watts Peak Each, 80 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB
• Mounting Depth: 2.16"

Purchase $400 or More of NVX and Save 15%!
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Fits your 733i
71
List price $114.73
-21% $90.48

In stock

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• 240 watts Peak Each, 80 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB
• Mounting Depth: 2.16"

Pioneer TS-G1320S with Sound Damping

500W Peak (70W RMS) 5.25" G-Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

TSG1320S_SDBSK2 big
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Pioneer TS-G1320S with Sound Damping

500W Peak (70W RMS) 5.25" G-Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 250 watts Peak Each, 35 watts RMS Each
• 1-3/16" Polyethylene Terephthalate (PET) Balanced Dome tweeters
• Mica Injected Polypropylene - MIPP cone material with Progressive Flex Suspension System (PFSS) spider
• Impedance: 4 ohm
• Sensitivity: 87 dB

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Fits your 733i
55
List price $83.74
-28% $59.98

In stock

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• 250 watts Peak Each, 35 watts RMS Each
• 1-3/16" Polyethylene Terephthalate (PET) Balanced Dome tweeters
• Mica Injected Polypropylene - MIPP cone material with Progressive Flex Suspension System (PFSS) spider
• Impedance: 4 ohm
• Sensitivity: 87 dB

Rockford Fosgate Power T1462 with Sound Damping

180W Peak (90W RMS) 4x6” Power Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

09-T1462_SDBSK2 big
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Rockford Fosgate Power T1462 with Sound Damping

180W Peak (90W RMS) 4x6” Power Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 90 watts Peak Each, 45 watts RMS Each
• 1" Aluminum Dome tweeters with polyurethane suspension
• Carbon Fiber & Polypropylene-injected cone material
• Impedance: 4 ohm
• Sensitivity: 85.5 dB

Save 15% Off Package Deals at Checkout!
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Fits your 733i
64
List price $238.73
-8% $219.99

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Only 2 Left!

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• 90 watts Peak Each, 45 watts RMS Each
• 1" Aluminum Dome tweeters with polyurethane suspension
• Carbon Fiber & Polypropylene-injected cone material
• Impedance: 4 ohm
• Sensitivity: 85.5 dB

Hertz CX 130 with Speaker Installation Kit

5.25" Cento Series 2-Way Coaxial Car Speakers

CX 130, SDSK2, XBAF525, SDRLR1 big
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Hertz CX 130 with Speaker Installation Kit

5.25" Cento Series 2-Way Coaxial Car Speakers

• 75 Watts Max Each, 25 Watts RMS Each
• Semi-pressed paper + Mica cone material
• Tetolon Tweeter dome
• 4 Ohm Impedance
• Sensitivity: 92.5 dB
• Mounting Depth: 2"

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Install kits available for most vehicles

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Fits the following location in your 733i
  • Rear Deck Corner
149
List price $332.71
-13% $290.02 /pair

In stock

Add to Cart

• 75 Watts Max Each, 25 Watts RMS Each
• Semi-pressed paper + Mica cone material
• Tetolon Tweeter dome
• 4 Ohm Impedance
• Sensitivity: 92.5 dB
• Mounting Depth: 2"

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

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
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Fits your 733i
48
List price $248.74
-14% $214.98

In stock

Only 2 Left!

Add to Cart

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

NVX - Worth the Envy - Direct to Consumer Car Audio
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    Shop your 1980 733i
    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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