Garage
Shop
Account Icon
Account
Box Icon
Track
order
Telephone Icon
Call
Help Icon
Help
Door with Arrow Icon
Sign In

1981 BMW 733i

Change vehicle | Remove vehicle

Overview Upgrade your Stereo Upgrade your Speakers Add a Subwoofer Add an Amplifier Digital Sound Processors Audio Installation & Accessories Add a Backup Camera Dads & Grads Sale

Speakers & Speaker Installation for 1981 BMW 733i

Find speakers to upgrade your sound and fit in the factory speaker location for your 733i.  After you choose your speakers, we'll help you find speaker adapters, speaker harnesses and other accessories for installation.

All car speakers

Shop All Speaker Locations in the Vehicle

See all speakers that fit, regardless of location.

Kick Panel

Kick Panel Speakers

Speakers for your kick panel.

Rear Deck Corner

Rear Deck Corner Speakers

Speakers for your corner rear deck

Dads & Grads Sale

Dads & Grads Sale

Free Gear / Open-Box Deals / Huge Discounts up to 40% off Car / Marine / ATV Audio

Filters
Polk Audio ✕
Clear Filters
Reset Done
Product Type
Price Range
Speaker Location
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.
Deals
Promotions we have offer More Ways to Shop for items that are on clearance, last chance, special offer and sales, Made in America, and more!
Condition
filter-icon Filters & Sort
Limited time!

Polk Audio DB462 (DB 462)

300W Peak (100W RMS) 4x6” DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

DB462 big
Go to item page Right Arrow Icon of Right Arrow

Polk Audio DB462 (DB 462)

300W Peak (100W RMS) 4x6” DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

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

Free Speaker Accessory at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits the following location in your 733i
  • Kick Panel
7
List price $99.99
-10% $90.00 /pair

In stock

Only 2 Left!

Add to Cart
See all 8 special offers
Limited time!

Polk Audio DB522 (DB 522)

600W Peak (200W RMS) 5.25" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

DB522 big
Go to item page Right Arrow Icon of Right Arrow

Polk Audio DB522 (DB 522)

600W Peak (200W RMS) 5.25" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

• 300 watts Peak Each, 100 watts RMS Each
• 3/4" Silk Dome tweeters
• UV-tolerant Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

Free Speaker Accessory at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits the following location in your 733i
  • Rear Deck Corner
13
List price $109.99
-9% $100.00 /pair

In stock

Add to Cart
See all 12 special offers

Polk Audio MM522 (MM 522) (Open Box, Good)

480W Peak (160W RMS) 5.25" Mobile Monitor Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

MM522 big
Go to item page Right Arrow Icon of Right Arrow

Polk Audio MM522 (MM 522) (Open Box, Good)

480W Peak (160W RMS) 5.25" Mobile Monitor Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

• 240 watts Peak Each, 80 watts RMS Each
• 1" Terylene Dome tweeters
• Titanium-plated Polymer cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits the following location in your 733i
  • Rear Deck Corner
List price $199.99
-46% $107.40 /pair

In stock

Only 1 Left!

Add to Cart

• 240 watts Peak Each, 80 watts RMS Each
• 1" Terylene Dome tweeters
• Titanium-plated Polymer cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

Polk Audio DB5252 (DB 5252)

600W Peak (200W RMS) 5.25” DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

DB5252 big
Go to item page Right Arrow Icon of Right Arrow

Polk Audio DB5252 (DB 5252)

600W Peak (200W RMS) 5.25” DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

• 300 watts Peak Each, 100 watts RMS Each
• 3/4" dual Silk Dome tweeters
• UV-Resistant Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $20.00 in rewards to spend later

install icon

Install kits available for most vehicles

found car based on your search
Fits the following location in your 733i
  • Rear Deck Corner
4
List price $209.99
-5% $200.00 /set

In stock

Only 2 Left!

Add to Cart
See all 12 special offers

Polk Audio 5.25" 300W Car/Marine ATV Speakers, Pair + 5.25" 225W Speakers, Pair

600W Peak (200W RMS) 5.25" DB+ Series 2-way Marine/UTV Certified Coaxial Speakers with IP55 Rating for Car, Powersports or Marine Audio Package

46CSC54,DB 522 big
Go to item page Right Arrow Icon of Right Arrow

Polk Audio 5.25" 300W Car/Marine ATV Speakers, Pair + 5.25" 225W Speakers, Pair

600W Peak (200W RMS) 5.25" DB+ Series 2-way Marine/UTV Certified Coaxial Speakers with IP55 Rating for Car, Powersports or Marine Audio Package

• 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"

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 733i
19
List price $229.98
-29% $163.54

In stock

Add to Cart

• 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"

Polk Audio DB522 (2-Pairs, 4-Total)

1200W Peak (400W RMS) 5.25" DB+ Series 2-way Car and Marine Certified Coaxial Speakers (2-Pairs)

DB522_2 big
Go to item page Right Arrow Icon of Right Arrow

Polk Audio DB522 (2-Pairs, 4-Total)

1200W Peak (400W RMS) 5.25" DB+ Series 2-way Car and Marine Certified Coaxial Speakers (2-Pairs)

• 300 watts Peak Each, 100 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 733i
13
List price $219.98
-25% $166.00

In stock

Add to Cart

• 300 watts Peak Each, 100 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

Polk Audio 150W Coaxial Speakers w/ Kicker 200W 4-Ohm Car Audio Coaxial Speakers

Polk Audio 150W Coaxial Speakers w/ Kicker 200W 4-Ohm Car Audio Coaxial Speakers

43DSC504,DB462 big
Go to item page Right Arrow Icon of Right Arrow

Polk Audio 150W Coaxial Speakers w/ Kicker 200W 4-Ohm Car Audio Coaxial Speakers

Polk Audio 150W Coaxial Speakers w/ Kicker 200W 4-Ohm Car Audio Coaxial Speakers

• 150 Watts Max Each, 50 Watts RMS Each
• 0.75" shallow tweeter design
• Polypropylene UV tolerant cone
• 4 Ohm Impedance
• Sensitivity: 90dB
• Mounting Depth: 1.81"
• IP65 rated

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 733i
24
List price $184.98
-30% $128.96

In stock

Only 2 Left!

Add to Cart

Polk Audio DB462 Two Pack (DB 462)

2 Pair of 4x6" 2-Way DB+ (Plus) Series Coaxial Car Audio Speakers with Marine/ATV/UTV Certification

DB462 2 Pack big
Go to item page Right Arrow Icon of Right Arrow

Polk Audio DB462 Two Pack (DB 462)

2 Pair of 4x6" 2-Way DB+ (Plus) Series Coaxial Car Audio Speakers with Marine/ATV/UTV Certification

• Two Pair (4 Speakers)
• 50 Watts Max Each, 150 Watts RMS Each
• 0.75" shallow tweeter design
• Polypropylene UV tolerant cone
• 4 Ohm Impedance
• Sensitivity: 90dB
• Mounting Depth: 1.81"
• IP65 rated

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 733i
7
List price $199.98
-46% $108.00

In stock

Only 1 Left!

Add to Cart

• Two Pair (4 Speakers)
• 50 Watts Max Each, 150 Watts RMS Each
• 0.75" shallow tweeter design
• Polypropylene UV tolerant cone
• 4 Ohm Impedance
• Sensitivity: 90dB
• Mounting Depth: 1.81"
• IP65 rated

Polk Audio 5.25" 300W Speakers, Pair + Kicker 5.25" 200W Speakers, Pair

600W Peak (200W RMS) 5.25" DB+ Series 2-way Marine/UTV Certified Coaxial Speakers with IP55 Rating for Car, Powersports or Marine Audio Package

43DSC504, DB522 big
Go to item page Right Arrow Icon of Right Arrow

Polk Audio 5.25" 300W Speakers, Pair + Kicker 5.25" 200W Speakers, Pair

600W Peak (200W RMS) 5.25" DB+ Series 2-way Marine/UTV Certified Coaxial Speakers with IP55 Rating for Car, Powersports or Marine Audio Package

• 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"

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 733i
30
List price $194.98
-24% $149.07

In stock

Add to Cart

• 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"

Polk Audio 150W Coaxial Speakers with Kicker 225W Coaxial Car Audio Speakers

Polk Audio 150W Coaxial Speakers with Kicker 225W Coaxial Car Audio Speakers

46CSC54,DB462 big
Go to item page Right Arrow Icon of Right Arrow

Polk Audio 150W Coaxial Speakers with Kicker 225W Coaxial Car Audio Speakers

Polk Audio 150W Coaxial Speakers with Kicker 225W Coaxial Car Audio Speakers

• 150 Watts Max Each, 50 Watts RMS Each
• 0.75" shallow tweeter design
• Polypropylene UV tolerant cone
• 4 Ohm Impedance
• Sensitivity: 90dB
• Mounting Depth: 1.81"
• IP65 rated

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 733i
12
List price $219.98
-39% $133.96

In stock

Only 2 Left!

Add to Cart

• 150 Watts Max Each, 50 Watts RMS Each
• 0.75" shallow tweeter design
• Polypropylene UV tolerant cone
• 4 Ohm Impedance
• Sensitivity: 90dB
• Mounting Depth: 1.81"
• IP65 rated

Polk Audio DB5252 with Installation Accessories

200W RMS 5.25” 2-way Car & Marine Component Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

DB5252, XBAF525, SDSK2, SDRLR1, BTK106 big
Go to item page Right Arrow Icon of Right Arrow

Polk Audio DB5252 with Installation Accessories

200W RMS 5.25” 2-way Car & Marine Component Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

• 300 watts Peak Each, 100 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits the following location in your 733i
  • Rear Deck Corner
152
List price $282.70
-15% $240.03 /set

In stock

Only 2 Left!

Add to Cart

• 300 watts Peak Each, 100 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

Polk Audio DB5252 DB+ 5.25-inch Components (DB 5252) (2-Pairs, 4-Total)

1200WPeak (400W RMS) 5.25” DB+ Series 2-way Car & Marine Component Speaker System (2-Pairs)

DB5252_2 big
Go to item page Right Arrow Icon of Right Arrow

Polk Audio DB5252 DB+ 5.25-inch Components (DB 5252) (2-Pairs, 4-Total)

1200WPeak (400W RMS) 5.25” DB+ Series 2-way Car & Marine Component Speaker System (2-Pairs)

• 300 watts Peak Each, 100 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 733i
4
List price $419.98
-19% $340.00

In stock

Only 1 Left!

Add to Cart

• 300 watts Peak Each, 100 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

Polk Audio DB522 with Sound Damping

600W Peak (200W RMS) 5.25" DB+ Series 2-way Marine Coaxial Speakers with Sound Dampening

SDSK2,DB 522 big
Go to item page Right Arrow Icon of Right Arrow

Polk Audio DB522 with Sound Damping

600W Peak (200W RMS) 5.25" DB+ Series 2-way Marine Coaxial Speakers with Sound Dampening

• 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"

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits the following location in your 733i
  • Rear Deck Corner
61
List price $128.73
-14% $111.24 /pair

In stock

Add to Cart

• 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"

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
Go to item page Right Arrow Icon of Right Arrow

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"

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits the following location in your 733i
  • Rear Deck Corner
60
List price $128.73
-15% $109.69 /pair

In stock

Add to Cart

• 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"

Polk Audio DB5252 with Sound Dampening

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

SDSK2,DB5252 big
Go to item page Right Arrow Icon of Right Arrow

Polk Audio DB5252 with Sound Dampening

600W Peak (300W RMS) 5.25" 2-Way Marine Grade Component Speakers (Pair) + 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: 1.77"
• IP65 rated

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits the following location in your 733i
  • Rear Deck Corner
51
List price $228.73
-13% $200.00 /set

In stock

Only 2 Left!

Add to Cart

• 300 Watts Max Each, 100 Watts RMS Each
• 0.75" shallow tweeter design
• Polypropylene UV tolerant cone
• 4 Ohm Impedance
• Sensitivity: 91dB
• Mounting Depth: 1.77"
• IP65 rated

Polk Audio DB522 with Installation Accessories

200W RMS 5.25" 2-way Car and Marine Coaxial Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

DB522, XBAF525, SDSK2, SDRLR1, BTK106 big
Go to item page Right Arrow Icon of Right Arrow

Polk Audio DB522 with Installation Accessories

200W RMS 5.25" 2-way Car and Marine Coaxial Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

• 300 watts Peak Each, 100 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits the following location in your 733i
  • Rear Deck Corner
161
List price $182.70
-23% $140.03 /pair

In stock

Add to Cart

• 300 watts Peak Each, 100 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 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
Go to item page Right Arrow Icon of Right Arrow

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

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits the following location in your 733i
  • Kick Panel
147
List price $172.70
-27% $125.83 /pair

In stock

Only 2 Left!

Add to Cart

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

Polk Audio DB462 with Sound Dampening Kit

300W Peak (100W RMS) 4" x 6" DB+ Series 2-way Marine Coaxial Speakers with Sound Dampening

SDSK2,DB462 big
Go to item page Right Arrow Icon of Right Arrow

Polk Audio DB462 with Sound Dampening Kit

300W Peak (100W RMS) 4" x 6" DB+ Series 2-way Marine Coaxial Speakers with Sound Dampening

• 150 Watts Max Each, 50 Watts RMS Each
• 0.75" shallow tweeter design
• Polypropylene UV tolerant cone
• 4 Ohm Impedance
• Sensitivity: 90dB
• Mounting Depth: 1.81"
• IP65 rated

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits the following location in your 733i
  • Kick Panel
54
List price $118.73
-16% $99.99 /pair

In stock

Only 2 Left!

Add to Cart

• 150 Watts Max Each, 50 Watts RMS Each
• 0.75" shallow tweeter design
• Polypropylene UV tolerant cone
• 4 Ohm Impedance
• Sensitivity: 90dB
• Mounting Depth: 1.81"
• IP65 rated

6 Pack: Polk Audio DB522 5.25" Car/Marine/ATV Speakers (12 Speakers)

6 Pairs (12 total speakers) 5.25 Inch 300 Watt 2 Way Car/Marine ATV Stereo Speakers Pair (6 Pack)

DB522 6 Pack big
Go to item page Right Arrow Icon of Right Arrow

6 Pack: Polk Audio DB522 5.25" Car/Marine/ATV Speakers (12 Speakers)

6 Pairs (12 total speakers) 5.25 Inch 300 Watt 2 Way Car/Marine ATV Stereo Speakers Pair (6 Pack)

• 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"

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 733i
13
List price $659.94
-25% $498.00

In stock

Only 3 Left!

Add to Cart

• 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"

 
    Clear all
    why-shoping-with-sonic

    We love people and we're ready to help you! See what separates us from our competition.

    Take advantage of our VIP rewards like 10% back on your purchases, free 2-day shipping, extended warranties, and free returns! Gain access to all of these rewards without any membership fees.
    Get great discounted (and possibly FREE) installation accessories with most car stereo purchases. This includes dash kits, wiring harnesses and antenna adapters that you will need to properly install your new car stereo.
    We are an Authorized Dealer for all the brands we sell, including the most premium brands in car and marine audio such as Hertz, JL Audio, NVX, Rockford Fosgate, Kicker, Alpine, Kenwood and many more.
    Shop Deals and get up to 30% off premium brands! Shop Now! We are always looking out for the best products and deals to offer our customers. Don’t pay too much by shopping elsewhere!
    We have information on brands, gear, and more for you to explore! Check out our YouTube Channel for helpful how-to videos, product reviews, and Q&As. For a more detailed look, also visit our Learning Center!
    Our trained experts are here to assist you! They are just a phone call or click away to help you get the right gear for you and your vehicle!
    Why Shop With Us?
    FAQ for Speakers in 1981 733i

    Q: Can I upgrade or change the Speakers in 1981 BMW 733i?

    A: Yes this page includes all the best Speakers that work in your 733i.

    Save up to 10 different vehicles in your garage
    Vehicle
    Store     Delete

    2009 Audi A6

    1981 BMW 733i

    2015 Audi S6

    2013 Ford Transit Connect

    2015 Audi S7

    2011 Toyota Sienna

    2008 Mercury Mariner

    2011 Honda Element

    2022 Subaru BRZ

    2008 Nissan Versa

    Add vehicle Clear all vehicles
    Where to find vehicle info
    Are you sure you want to clear your garage?
    This action cannot be undone. Confirm

    Cancel

    This category was not designed for products.
    If you continue, you will be redirected to a category customized for your vehicle. Continue

    Cancel

    Shop your 1981 733i
    Why Use a Vehicle Fit Guide?
    Change vehicle | Shop without vehicle
    Whoa! Slow down. Add your details below!
    additional information required
    Add vehicle details to confirm fitment
    Ignore fitment details
    Find stereos and more that work -- fast.
    Remove

    Can't find your vehicle? Click here and we'll help.

    Where to find vehicle info

    Go to Fitment

    Didn't find your car?

    Submit your details and we'll help!
    Please enter the letters as they are shown in the image above. Letters are not case-sensitive.
    Identify your vehicle and submodel details
    • Owner's manual
    • Vehicle's insurance card
    • Vehicle registration
    • Vehicle produced after 2005: Inside driver's side door
    • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
    Car Info Side Door Icon
    Vehicle Registration Icon
    Vehicle Insurance Icon
    Back

    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.

    Back
    Track your order
    Call our experts
    Support Center
    Return & Exchanges
    Follow on Instagram Instagram logo
    Subscribe on YouTube YouTube logo