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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 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.
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(2) Pairs of Hifonics ZS525CX

400W Max (60W RMS) 5.25" Zeus Series 2-Way Coaxial Car Speakers

ZS525CX,ZS525CX big
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(2) Pairs of Hifonics ZS525CX

400W Max (60W RMS) 5.25" Zeus Series 2-Way Coaxial Car Speakers

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

Lowest price in 30 days

NVX NSP525 (2-Pairs, 4-Total)

480W Peak (320W RMS) 5.25" N-Series 2-Way Coaxial Car Speakers with 20mm Silk Dome Tweeters (2-Pairs)

NSP525_2 big
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NVX NSP525 (2-Pairs, 4-Total)

480W Peak (320W RMS) 5.25" N-Series 2-Way Coaxial Car Speakers with 20mm Silk Dome Tweeters (2-Pairs)

• 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"

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27
List price $131.98
-17% $109.98

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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"

Pioneer TS-G1320S (2-Pairs, 4-Total)

1000W Max (140W RMS) 5.25" G-Series 2-Way Coaxial Car Speakers (2-Pairs)

TSG1320S_2 big
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Pioneer TS-G1320S (2-Pairs, 4-Total)

1000W Max (140W RMS) 5.25" G-Series 2-Way Coaxial Car Speakers (2-Pairs)

• 250W Max Each, 70W RMS Each
• 1-3/16 Balanced Dome Tweeter
• Injection Molded Polypropylene with Mica Cone
• 4 ohm Impedance
• Sensitivity: 88dB
• Mounting Depth: 1-3/4"

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7
List price $130.00
-31% $89.98

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• 250W Max Each, 70W RMS Each
• 1-3/16 Balanced Dome Tweeter
• Injection Molded Polypropylene with Mica Cone
• 4 ohm Impedance
• Sensitivity: 88dB
• Mounting Depth: 1-3/4"

AudioControl PNW-4 with Installation Accessories

150W Peak (50W RMS) 4″ PNW Series High-fidelity 2-way 3-ohm Coaxial Speakers + 4" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

PNW4_ACC_KIT big
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AudioControl PNW-4 with Installation Accessories

150W Peak (50W RMS) 4″ PNW Series High-fidelity 2-way 3-ohm Coaxial Speakers + 4" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

• 75 watts Peak Each, 25 watts RMS Each
• 1" Silk Dome Tweeters
• Rigid Poly Mica cone material
• Impedance: 3 ohm

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220
List price $260.71
-21% $206.06

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• 75 watts Peak Each, 25 watts RMS Each
• 1" Silk Dome Tweeters
• Rigid Poly Mica cone material
• Impedance: 3 ohm

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
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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

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50
List price $228.73
-13% $200.00 /set

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• 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

JBL Stage3 607C with Speaker Installation Kit

Kappa Series 5.25” 2-Way Car Component Speakers System + NVX Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

Kappa 503CF, XBAF525, SDSK2, SDRLR1, BTK106 big
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JBL Stage3 607C with Speaker Installation Kit

Kappa Series 5.25” 2-Way Car Component Speakers System + NVX Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

• 330 watts Watts Max Each Side, 110 watts Watts RMS Each Side
• 3/4"" Textile Dome Tweeter
• Fiberglass cone material
• Impedance: 3 ohm Ohm
• Sensitivity: 93 dB dB
• Mounting Depth: 2.25""

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148
List price $522.66
-39% $320.02 /set

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• 330 watts Watts Max Each Side, 110 watts Watts RMS Each Side
• 3/4"" Textile Dome Tweeter
• Fiberglass cone material
• Impedance: 3 ohm Ohm
• Sensitivity: 93 dB dB
• Mounting Depth: 2.25""

JBL Stage 3 427F with Speaker Installation Kit

300Peak (60W RMS) 4" Stage 3 Series 2-Way Coaxial Car Speakers

STAGE3427FAM, FRING4, SDSK2, SDRLR2, BTK106 big
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JBL Stage 3 427F with Speaker Installation Kit

300Peak (60W RMS) 4" Stage 3 Series 2-Way Coaxial Car Speakers

• 150 watts Peak Each, 30 watts RMS Each
• 3/4" Edge-driven Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 90 dB

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116
List price $162.66
-34% $107.71 /pair

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Only 1 Left!

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• 150 watts Peak Each, 30 watts RMS Each
• 3/4" Edge-driven Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 90 dB

Lowest price in 30 days

Infinity KAPPA53XF Speakers with Speaker Installation Kit

Kappa Series 5-1/4" 2-Way Coaxial Car Speakers with Speaker Baffles, Sound Dampening and a Heavy Duty Roller

INFSPKKA53XFAM, XBAF525, SDSK2, SDRLR1 big
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Infinity KAPPA53XF Speakers with Speaker Installation Kit

Kappa Series 5-1/4" 2-Way Coaxial Car Speakers with Speaker Baffles, Sound Dampening and a Heavy Duty Roller

• Peak Power: 180W
• RMS Power: 60W
• Edge-driven silk dome tweeter
• Mounting Depth: 2 1/4"
• Plus One+ glass-fiber woofer cone

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74
List price $303.67
-37% $190.72 /pair

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• Peak Power: 180W
• RMS Power: 60W
• Edge-driven silk dome tweeter
• Mounting Depth: 2 1/4"
• Plus One+ glass-fiber woofer cone

Alpine S2-S50 (2-Pairs, 4-Total)

680W Peak (220W RMS) 5.25" S-Series 2-way Coaxial Car Speakers (2-Pairs)

S2S50_2 big
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Alpine S2-S50 (2-Pairs, 4-Total)

680W Peak (220W RMS) 5.25" S-Series 2-way Coaxial Car Speakers (2-Pairs)

• 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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2
List price $320.00
-19% $259.90

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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

Hertz DCX100.3 (2-Pairs, 4-Total)

240W Peak (120W RMS) 4" Dieci Series 2-Way Coaxial Car Speakers (2-Pairs)

DCX1003_2 big
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Hertz DCX100.3 (2-Pairs, 4-Total)

240W Peak (120W RMS) 4" Dieci Series 2-Way Coaxial Car Speakers (2-Pairs)

• 30 Watts Max Each, 15 Watts RMS Each
• Water-repellent pressed paper cone material
• PEI dome tweeter
• 4 Ohm Impedance
• Sensitivity: 92 dB
• Mounting Depth: 1-3/4"

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2
List price $300.00
-13% $259.98

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• 30 Watts Max Each, 15 Watts RMS Each
• Water-repellent pressed paper cone material
• PEI dome tweeter
• 4 Ohm Impedance
• Sensitivity: 92 dB
• Mounting Depth: 1-3/4"

NVX VSP4 (2-Pairs, 4-Total)

900W Peak (300W RMS) 4" V-Series 2-Way Coaxial Car Speakers with Silk Dome Tweeters (2-Pairs)

VSP4_2 big
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NVX VSP4 (2-Pairs, 4-Total)

900W Peak (300W RMS) 4" V-Series 2-Way Coaxial Car Speakers with Silk Dome Tweeters (2-Pairs)

• 225 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB
• Mounting Depth: 2.04"

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17
List price $131.98
-21% $104.48

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• 225 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB
• Mounting Depth: 2.04"

Rockford Fosgate Power T152 (2-Pairs, 4-Total)

480W Peak (240W RMS) 5.25" Power Series 2-way Coaxial Speakers (2-Pairs)

T152_2 big
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Rockford Fosgate Power T152 (2-Pairs, 4-Total)

480W Peak (240W RMS) 5.25" Power Series 2-way Coaxial Speakers (2-Pairs)

• Peak Power: 120W
• RMS Power: 60W
• Carbon Fiber and Polypropylene Injection Molded Cone
• Butyl Rubber Surround
• 1" Aluminum Dome Tweeter
• Offset Cantilever Coaxial Mounted Tweeter

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22
$439.98

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• Peak Power: 120W
• RMS Power: 60W
• Carbon Fiber and Polypropylene Injection Molded Cone
• Butyl Rubber Surround
• 1" Aluminum Dome Tweeter
• Offset Cantilever Coaxial Mounted Tweeter

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
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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"

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60
List price $128.73
-14% $111.24 /pair

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• 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"

AudioControl PNW-4 with Sound Damping

150W Peak (50W RMS) 4″ PNW Series High-fidelity 2-way 3-ohm Coaxial Speakers + NVX SDSK2 Sound Damping

PNW4_SDSK2 big
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AudioControl PNW-4 with Sound Damping

150W Peak (50W RMS) 4″ PNW Series High-fidelity 2-way 3-ohm Coaxial Speakers + NVX SDSK2 Sound Damping

• 75 watts Peak Each, 25 watts RMS Each
• 1" Silk Dome Tweeters
• Rigid Poly Mica cone material
• Impedance: 3 ohm

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47
List price $207.74
-11% $183.99

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• 75 watts Peak Each, 25 watts RMS Each
• 1" Silk Dome Tweeters
• Rigid Poly Mica cone material
• Impedance: 3 ohm

DS18 PRO-X5.4BM with Speaker Installation Kit

Includes: (2) 5.25” Mid-Range Loudspeaker with Bullet, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit

(2)PRO-X5.4BM, FRING525, SDSK2 big
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DS18 PRO-X5.4BM with Speaker Installation Kit

Includes: (2) 5.25” Mid-Range Loudspeaker with Bullet, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit

• 300 watts Max
• 150 watts RMS
• Non-Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 92.7 dB
• Mounting Depth: 2.6"

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48
List price $138.63
-15% $118.08

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• 300 watts Max
• 150 watts RMS
• Non-Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 92.7 dB
• Mounting Depth: 2.6"

Hertz DCX100.3 with Speaker Installation Kit

4" Dieci Series 2-Way Coaxial Car Speakers + NVX 4" Speaker Baffles, Sound Dampening, Heavy Duty Roller and Panel Removal Kit

DCX 100.3, FRING4, SDSK2, SDRLR1 big
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Hertz DCX100.3 with Speaker Installation Kit

4" Dieci Series 2-Way Coaxial Car Speakers + NVX 4" Speaker Baffles, Sound Dampening, Heavy Duty Roller and Panel Removal Kit

• 30 Watts Max Each, 15 Watts RMS Each
• Water-repellent pressed paper cone material
• PEI dome tweeter
• 4 Ohm Impedance
• Sensitivity: 92 dB
• Mounting Depth: 1-3/4"

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144
List price $221.71
-25% $166.52 /pair

In stock

Add to Cart

• 30 Watts Max Each, 15 Watts RMS Each
• Water-repellent pressed paper cone material
• PEI dome tweeter
• 4 Ohm Impedance
• Sensitivity: 92 dB
• Mounting Depth: 1-3/4"

JBL Club 422F with Speaker Installtion Kit

70W RMS 4" 2-Way 3-Ohms Coaxial Speakers with Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

Club 422F, FRING4, SDSK2, SDRLR1, BTK106 big
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JBL Club 422F with Speaker Installtion Kit

70W RMS 4" 2-Way 3-Ohms Coaxial Speakers with Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

• 105 watts Max Each, 35 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 90 dB @ 2.83V
• Mounting Height: 0.604"

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113
List price $202.66
-47% $107.75 /pair

In stock

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• 105 watts Max Each, 35 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 90 dB @ 2.83V
• Mounting Height: 0.604"

DS18 EXL-SQ5.25 with Speaker Installation Kit

160W RMS 5.25" 2-Way Speakers + 5.25" Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

EXL-SQ5.25, FRING525, SDSK2, SDRLR, BTK106 big
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DS18 EXL-SQ5.25 with Speaker Installation Kit

160W RMS 5.25" 2-Way Speakers + 5.25" Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

• 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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140
List price $216.66
-17% $179.78 /pair

In stock

Add to Cart

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

MTX THUNDER52 with Installation Accessories

90W RMS 5.25" 2-Way Coaxial Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

THUNDER52, XBAF525, SDSK2, SDRLR1, BTK106 big
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MTX THUNDER52 with Installation Accessories

90W RMS 5.25" 2-Way Coaxial Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

• 90 watts Peak Each, 45 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

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149
List price $192.66
-17% $159.98 /pair

In stock

Add to Cart

• 90 watts Peak Each, 45 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

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
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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

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160
List price $182.70
-23% $140.03 /pair

In stock

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

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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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    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

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