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1981 Isuzu I-Mark

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Overview 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 Isuzu I-Mark

Find speakers to upgrade your sound and fit in the factory speaker location for your I-Mark.  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.

Front Door Panel Speakers

Front Door Speakers

Speakers for your front door panels

Rear Deck Corner

Rear Deck Corner Speakers

Speakers for your corner rear deck

Rear Door Panel Speakers

Rear Door Panel Speakers

Speakers for your rear door panels

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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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Hertz DCX130.3 (2-Pairs, 4-Total)

160W Peak (80W RMS) 5.25" Dieci Series 2-Way Coaxial Car Speakers (2-Pairs)

DCX1303_2 big
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Hertz DCX130.3 (2-Pairs, 4-Total)

160W Peak (80W RMS) 5.25" Dieci Series 2-Way Coaxial Car Speakers (2-Pairs)

• 40Watts Max Each, 20 Watts RMS Each
• Water-repellent pressed paper cone material<
• PEI dome tweeter
• 4 Ohm Impedance
• Sensitivity: 93 dB
• Mounting Depth: 2-3/16"

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List price $300.00
-13% $259.98

In stock

Only 1 Left!

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• 40Watts Max Each, 20 Watts RMS Each
• Water-repellent pressed paper cone material<
• PEI dome tweeter
• 4 Ohm Impedance
• Sensitivity: 93 dB
• Mounting Depth: 2-3/16"

Hertz CX 100 (2-Pairs, 4-Total)

480W Peak (160W RMS) 4" Cento Series 2-Way Coaxial Car Speakers (2-Pairs)

CX100_2 big
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Hertz CX 100 (2-Pairs, 4-Total)

480W Peak (160W RMS) 4" Cento Series 2-Way Coaxial Car Speakers (2-Pairs)

• 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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4
List price $520.00
$499.98

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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 CX 130 (2-Pairs, 4-Total)

600W Peak (200W RMS) 5.25" Cento Series 2-Way Coaxial Car Speakers (2-Pairs)

CX130_2 big
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Hertz CX 130 (2-Pairs, 4-Total)

600W Peak (200W RMS) 5.25" Cento Series 2-Way Coaxial Car Speakers (2-Pairs)

• 150 watts Peak Each, 50 watts RMS Each
• 15/16 Tetolon Dome Tweeters
• cone material
• Impedance: 4 ohm
• Sensitivity: 92.5 dB

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List price $520.00
$499.98

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• 150 watts Peak Each, 50 watts RMS Each
• 15/16 Tetolon Dome Tweeters
• cone material
• Impedance: 4 ohm
• Sensitivity: 92.5 dB

Hifonics ZS525CX (2-Pairs, 4-Total)

800W Peak (120W RMS) 5.25” Zeus Series Coaxial 2-way Car Speakers (2-Pairs)

ZS525CX_2 big
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Hifonics ZS525CX (2-Pairs, 4-Total)

800W Peak (120W RMS) 5.25” Zeus Series Coaxial 2-way Car Speakers (2-Pairs)

• 200 Watts Max Each, 30 Watts RMS Each
• 1" Mylar Balanced Dome Tweeter
• Alpha-Cellulose Cones
• 4 Ohm Impedance
• Sensitivity: 88dB
• Mounting Depth: 2"

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7
List price $57.98
-31% $39.98

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• 200 Watts Max Each, 30 Watts RMS Each
• 1" Mylar Balanced Dome Tweeter
• Alpha-Cellulose Cones
• 4 Ohm Impedance
• Sensitivity: 88dB
• Mounting Depth: 2"

Infinity Primus PR5012IS (PR5012ISAM) (2-Pairs, 4-Total)

480W Peak (160W RMS) 5.25" Primus Series 2-Way Coaxial Car Speakers (2-Pairs)

PR5012ISAM_2 big
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Infinity Primus PR5012IS (PR5012ISAM) (2-Pairs, 4-Total)

480W Peak (160W RMS) 5.25" Primus Series 2-Way Coaxial Car Speakers (2-Pairs)

• 120 watts Peak Each, 40 watts RMS Each
• Textile Edge-driven Dome Tweeters
• Polypropylene cone material
• Impedance: 2.7
• Sensitivity: 88 dB

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List price $239.90
-54% $109.90

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• 120 watts Peak Each, 40 watts RMS Each
• Textile Edge-driven Dome Tweeters
• Polypropylene cone material
• Impedance: 2.7
• Sensitivity: 88 dB

MTX TERMINATOR5 (2-Pairs, 4-Total)

280W Peak (140W RMS) 5.25" Terminator Series 2-Way Coaxial Car Speakers (2-Pairs)

TERMINATOR5_2 big
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MTX TERMINATOR5 (2-Pairs, 4-Total)

280W Peak (140W RMS) 5.25" Terminator Series 2-Way Coaxial Car Speakers (2-Pairs)

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

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List price $139.90
-14% $119.90

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

DS18 ZXI-44 (2-Pairs, 4-Total)

300W Peak (100W RMS) 4" ZXI Series 2-Way 4-Ohm Coaxial Car Speakers (2-Pairs)

ZXI44_2 big
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DS18 ZXI-44 (2-Pairs, 4-Total)

300W Peak (100W RMS) 4" ZXI Series 2-Way 4-Ohm Coaxial Car Speakers (2-Pairs)

• 150 watts Peak Each, 50 watts RMS Each
• 1" PEI (Polyetherimide) Dome Tweeters
• Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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$161.90

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• 150 watts Peak Each, 50 watts RMS Each
• 1" PEI (Polyetherimide) Dome Tweeters
• Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

DS18 EXL-SQ5.25 (2-Pairs, 4-Total)

1360W Peak (320W RMS) 5.25" EXL-SQ Series 2-Way Coaxial Car Speakers (2-Pairs)

EXLSQ525_2 big
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DS18 EXL-SQ5.25 (2-Pairs, 4-Total)

1360W Peak (320W RMS) 5.25" EXL-SQ Series 2-Way Coaxial Car Speakers (2-Pairs)

• 340 watts Peak Each, 80 watts RMS Each
• 1" PEI (Polyetherimide) Dome Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 86 dB

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$287.90

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• 340 watts Peak Each, 80 watts RMS Each
• 1" PEI (Polyetherimide) Dome Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 86 dB

JBL STAGE2 524 (STAGE2524) with Sound Damping

420W Peak (70W RMS) 5.25" Stage2 Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

STAGE2524_SDBSK2 big
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JBL STAGE2 524 (STAGE2524) with Sound Damping

420W Peak (70W RMS) 5.25" Stage2 Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 210 watts Peak Each, 35 watts RMS Each
• PEI (Polyetherimide) Balanced Dome tweeters
• Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

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49
List price $108.73
-40% $64.94

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• 210 watts Peak Each, 35 watts RMS Each
• PEI (Polyetherimide) Balanced Dome tweeters
• Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

JBL GX428 (2-Pairs, 4-Total)

420W Peak (140W RMS) 4" GX Series 2-way Coaxial Speakers (2-Pairs)

GX428AM_2 big
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JBL GX428 (2-Pairs, 4-Total)

420W Peak (140W RMS) 4" GX Series 2-way Coaxial Speakers (2-Pairs)

• 105 watts Peak Each, 35 watts RMS Each
• Soft Dome Tweeters
• Polypropylene cone material
• Impedance: 2.3 ohm
• Sensitivity: 90 dB

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$129.90

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• 105 watts Peak Each, 35 watts RMS Each
• Soft Dome Tweeters
• Polypropylene cone material
• Impedance: 2.3 ohm
• Sensitivity: 90 dB

Diamond Audio DMD42 with Sound Damping

120W Peak (60W RMS) 4" DMD Series 2-way Coaxial Car Speakers + NVX SDSK2 Sound Damping

DMD42_SDSK2 big
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Diamond Audio DMD42 with Sound Damping

120W Peak (60W RMS) 4" DMD Series 2-way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 60 watts Peak Each, 30 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 84 dB

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46
List price $138.73
-10% $124.98

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• 60 watts Peak Each, 30 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 84 dB

DS18 PRO-X5M (Pair)

600W Peak (300W RMS) 5.25” PRO-X Series Midrange Loudspeakers (Pair)

PROX5M_2 big
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DS18 PRO-X5M (Pair)

600W Peak (300W RMS) 5.25” PRO-X Series Midrange Loudspeakers (Pair)

• 300 watts Peak Each, 150 watts RMS Each
• Red Steel Basket
• Paper cone material
• Impedance: 8 ohm
• Sensitivity: 90 dB

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List price $89.90
$87.20

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• 300 watts Peak Each, 150 watts RMS Each
• Red Steel Basket
• Paper cone material
• Impedance: 8 ohm
• Sensitivity: 90 dB

Earthquake Sound VTEK-MC5 with Installation Accessories

100W RMS 5.25" 2-Way Component Speaker System with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

VTEK-MC5, XBAF525, SDSK2, SDRLR1, BTK106 big
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Earthquake Sound VTEK-MC5 with Installation Accessories

100W RMS 5.25" 2-Way Component Speaker System with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

• 500 watts Peak Each, 50 watts RMS Each
• 1" Silk Dome Tweeters
• Electroplated carbon fiber cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

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147
List price $321.71
-16% $270.02 /set

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• 500 watts Peak Each, 50 watts RMS Each
• 1" Silk Dome Tweeters
• Electroplated carbon fiber cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

DS18 PRO-X5.4M (Pair)

600W Peak (300W RMS) 5.25” PRO-X Series Midrange Loudspeakers (Pair)

PROX54M_2 big
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DS18 PRO-X5.4M (Pair)

600W Peak (300W RMS) 5.25” PRO-X Series Midrange Loudspeakers (Pair)

• 300 watts Peak Each, 150 watts RMS Each
• Red Steel Basket
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

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1
List price $89.90
$87.20

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• 300 watts Peak Each, 150 watts RMS Each
• Red Steel Basket
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

DS18 G5.25Xi (2-Pairs, 4-Total)

540W Peak (180W RMS) 5.25" GEN-X Series 2-way 4-ohm Coaxial Speakers (2-Pairs)

G525XI_2 big
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DS18 G5.25Xi (2-Pairs, 4-Total)

540W Peak (180W RMS) 5.25" GEN-X Series 2-way 4-ohm Coaxial Speakers (2-Pairs)

• 135 watts Peak Each, 45 watts RMS Each
• 1" Mylar Balanced Dome Tweeters
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 84 dB

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List price $101.90
$98.84

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• 135 watts Peak Each, 45 watts RMS Each
• 1" Mylar Balanced Dome Tweeters
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 84 dB

Hertz CK 130 with Sound Damping

210W Peak (70W RMS) 5.25" Cento Series 2-Way Component Speaker system + NVX SDSK2 Sound Damping

CK130_SDSK2 big
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Hertz CK 130 with Sound Damping

210W Peak (70W RMS) 5.25" Cento Series 2-Way Component Speaker system + NVX SDSK2 Sound Damping

• 105 Watts Max Each, 35 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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List price $498.74
-17% $414.98

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• 105 Watts Max Each, 35 Watts RMS Each
•Semi Pressed Paper-Mica cone material
• Tetolon Tweeter dome
• 4 Ohm Impedance
• Sensitivity: 92.5 dB
• Mounting Depth: 2"

Kenwood KFC-C1356S with Sound Damping

520W Peak (60W RMS) 5.25" 2-way 4-ohm Dual Cone Car Speakers + NVX SDBSK2 Premium Sound Damping

KFCC1356S_SDBSK2 big
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Kenwood KFC-C1356S with Sound Damping

520W Peak (60W RMS) 5.25" 2-way 4-ohm Dual Cone Car Speakers + NVX SDBSK2 Premium Sound Damping

• 260 watts Peak Each, 30 watts RMS Each
• Cone tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

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46
List price $78.74
-42% $45.48

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• 260 watts Peak Each, 30 watts RMS Each
• Cone tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

AudioControl PNW-525 with Installation Accessories

150W Peak (100W RMS) 5.25″ PNW Series 2-way 3-ohm Coaxial Speakers + 5.25" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

PNW525_ACC_KIT big
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AudioControl PNW-525 with Installation Accessories

150W Peak (100W RMS) 5.25″ PNW Series 2-way 3-ohm Coaxial Speakers + 5.25" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

• 75 watts Peak Each, 50 watts RMS Each
• 1" Silk Dome Tweeters
• Rigid Poly Mica cone material
• Impedance: 3 ohm
• Sensitivity: 84 dB

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225
List price $331.71
-16% $279.56

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• 75 watts Peak Each, 50 watts RMS Each
• 1" Silk Dome Tweeters
• Rigid Poly Mica cone material
• Impedance: 3 ohm
• Sensitivity: 84 dB

MTX SS5 with Sound Damping

500W Peak (250W RMS) 5.25" Signature Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

SS5_SDBSK2 big
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MTX SS5 with Sound Damping

500W Peak (250W RMS) 5.25" Signature Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

• 250 watts Peak Each, 125 watts RMS Each
• 1-3/16" Teteron Dome tweeters
• Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 84.9 dB

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$514.94

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• 250 watts Peak Each, 125 watts RMS Each
• 1-3/16" Teteron Dome tweeters
• Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 84.9 dB

Earthquake Sound FC5.2 with Installation Accessories

500W RMS 5-1/4" 2-Way Component System with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

FC5.2, XBAF525, SDSK2, SDRLR1, BTK106 big
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Earthquake Sound FC5.2 with Installation Accessories

500W RMS 5-1/4" 2-Way Component System with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

• 5-1/4" 2-way Performance Series Component System
• Low Mass Poly Injection Woofer Cone
• 1" Silk Dome Tweeter
• Selectable Tweeter Level
• Speaker Grilles Included
• 4 ohm Impedance
• Separate Filters for Bass and Tweeter

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148
List price $262.71
-28% $190.02

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• 5-1/4" 2-way Performance Series Component System
• Low Mass Poly Injection Woofer Cone
• 1" Silk Dome Tweeter
• Selectable Tweeter Level
• Speaker Grilles Included
• 4 ohm Impedance
• Separate Filters for Bass and Tweeter

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    FAQ for Speakers in 1981 I-Mark

    Q: Can I upgrade or change the Speakers in 1981 Isuzu I-Mark?

    A: Yes this page includes all the best Speakers that work in your I-Mark.

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    • 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
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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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