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1989 Geo Spectrum

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Subwoofers and enclosures, specifically designed for your 1989 Spectrum, as well as universal fit solutions

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

Subwoofers and Boxes for 1989 Geo Spectrum

A subwoofer that works with, or is designed for, your 1989 Geo Spectrum will add bass, clarity and depth to your music and system. A quality subwoofer will give realism and an overall rich, complete sound that you otherwise would not get with a factory car sound system.

Subwoofer bass packages

Universal Subwoofer Bass Packages

These packages include an amp, sub(s), an enclosure and amplifier wiring. They should fit your Geo Spectrum, but verify your trunk/rear vehicle area.

Universal Subwoofers

Universal Subwoofers

These sub(s) are perfect for adding to a empty box or custom built enclosure. They should work with your Geo Spectrum, but verify your trunk/rear vehicle area.

Universal-fit loaded and powered sub boxes

Universal-fit Loaded Subwoofer Boxes

These boxes include sub(s) and some include an amp. They should fit your Geo Spectrum, but verify your trunk/rear vehicle area.

Universal-fit empty unloaded sub boxes

Empty Universal-fit Sub Box Enclosures

These boxes are ready for you to add a sub and amp. They should fit your ride, but verify your trunk/rear vehicle area.

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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.
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.
Punch Series (72)
S Series (43)
CompRT Series (42)
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W3 v3 Series (39)
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SA Series (35)
VC Series (32)
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U Series (18)
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Reference Series (17)
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TB Series (4)
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Polk Audio MM1 Series (2)
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Uno Series (1)
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Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
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.
Top-Mount Depth (Mounting Depth)
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
Voice Coil(s)
Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.
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.
Subwoofer Design
This is the design of the subwoofer or the opening of the subwoofer enclosure. Each design has it's own benefits, whether it is a square, circle, or oval.

Round/Circle: This is the typical and common subwoofer design. They have a round cone and are a circle in design.

Square: These woofers are able to achieve a greater cone area in a smaller space. Because of the greater surface area, some square subwoofers will be louder than a round subwoofer of the same size.

Minimum Sealed Box Volume
This value indicates the minimum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Maximum Sealed Box Volume
This value indicates the maximum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
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".
Main Cone Color
This is the color of the speaker's or subwoofer's cone.
Recommended Enclosure Type
This is the recommended type of enclosure that the subwoofer should be installed into. Some subwoofers are specially designed for particular enclosures.

Sealed: These enclosures completely enclose the air inside the box. These boxes produce a tight bass.

Ported/Vented: These enclosures have a slot of air to escape from the box. The result is a sound that has more "boom".

Bandpass: These are a combination of both sealed and ported enclosures. They can be very efficient, but require tuning for the best response.

Xmax (millimeters)
Typically measured in millimeters, the Xmax value is the measure of a speaker cone's maximum excursion in one direction while maintaining a linear behavior.
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Kicker L7X81 (49L7X81)

800W RMS 8" SoloX Series Dual 1-ohm Subwoofer

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Kicker L7X81 (49L7X81)

800W RMS 8" SoloX Series Dual 1-ohm Subwoofer

• RMS Power: 400 - 800 watts
• Impedance: Dual 1 ohm
• Double-pressed pulp Cone
• UV-resistant Santoprene Surround
• Mount depth: 7-15/16"

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• RMS Power: 400 - 800 watts
• Impedance: Dual 1 ohm
• Double-pressed pulp Cone
• UV-resistant Santoprene Surround
• Mount depth: 7-15/16"

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Alpine Status HDZ-W12

2400W Peak (800W RMS) 12" Status Series Dual 4-ohm Car Subwoofer

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Alpine Status HDZ-W12

2400W Peak (800W RMS) 12" Status Series Dual 4-ohm Car Subwoofer

• Peak Power: 2400 watts
• RMS Power: 800 watts
• Impedance: Dual 4 ohm
• Pulp/Mica Cone
• High-Amplitude Multi-Roll (HAMR) Surround
• Mount depth: 7-3/8"
• Sensitivity: 83.7 dB

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Kicker L7T104 (46L7T104)

1000W Peak (500W RMS) 10" Solo-Baric L7T Series Dual 4-ohm Shallow Car Subwoofer

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Kicker L7T104 (46L7T104)

1000W Peak (500W RMS) 10" Solo-Baric L7T Series Dual 4-ohm Shallow Car Subwoofer

• Peak Power: 1000 watts
• RMS Power: 500 watts
• Impedance: Dual 4 ohm
• SoloKon Polypropylene Cone
• Ribbed Santoprene Surround
• Mount depth: 3-3/4"
• Sensitivity: 85.98 dB

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Massive Audio GTX104H

1600W Peak (800W RMS) 10" GTX Series Dual 4-ohm Car Subwoofer

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Massive Audio GTX104H

1600W Peak (800W RMS) 10" GTX Series Dual 4-ohm Car Subwoofer

• Peak Power: 1600 watts
• RMS Power: 800 watts
• Impedance: Dual 4 ohm
• UV-treated Non-Pressed Paper cone
• Pressed Foam surround
• Mount depth: 6.34"
• Sensitivity: 87.5 dB

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List price $189.99
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JL Audio 10W3v3 H.O. Wedge - HO110RG-W3v3

500W H.O. Wedge Series Single 10" W3v3 Subwoofer Loaded Ported Enclosure

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JL Audio 10W3v3 H.O. Wedge - HO110RG-W3v3

500W H.O. Wedge Series Single 10" W3v3 Subwoofer Loaded Ported Enclosure

• 500 Watts RMS
• Sensitivity: 84.87 dB
• 2 Ohm Final Impedance
• Injection-molded, mineral-filled polypropylene cone
• Nitrile butadiene rubber surround
•Customization trim ring
• Floating Cone Attach Method
• DMA Optimized Motor
• JL Audio's patented, chamber-coupled port design
• Gray carpet wrap
• fine-tuned through extensive real-world listening

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Sundown Audio X-15 v.3 D2 15" (X12V3D2)

5000W Peak (2500W RMS) 15" X Series Dual 2-ohm Car Subwoofer (SW-XV315D2)

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Sundown Audio X-15 v.3 D2 15" (X12V3D2)

5000W Peak (2500W RMS) 15" X Series Dual 2-ohm Car Subwoofer (SW-XV315D2)

• Peak Power: 5000 watts
• RMS Power: 2500 watts
• Impedance: Dual 2 ohm
• Pressed Paper Cone
• Mega Roll V2 Surround
• Mount depth: 11.6"
• Sensitivity: 85.9 dB

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Rockford Fosgate Power T1 T1D210

11200W Peak (600W RMS) 10" Power Series Dual 2-ohm Car Subwoofer

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Rockford Fosgate Power T1 T1D210

11200W Peak (600W RMS) 10" Power Series Dual 2-ohm Car Subwoofer

• Peak Power: 1200 watts
• RMS Power: 600 watts
• Impedance: Dual 2 ohm
• Kevlar Reinforced Semi-Pressed Paper Cone
• Rubber Surround
• Mount depth: 6.375"
• Sensitivity: 83 dB

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Rockford Fosgate Power T1 T1D212

1600W Peak (800W RMS) 12" Power Series Dual 2-ohm Car Subwoofer

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Rockford Fosgate Power T1 T1D212

1600W Peak (800W RMS) 12" Power Series Dual 2-ohm Car Subwoofer

• Peak Power: 1600 watts
• RMS Power: 800 watts
• Impedance: Dual 2 ohm
• Kevlar Reinforced Semi-Pressed Paper Cone
• Rubber Surround
• Mount depth: 6.75"
• Sensitivity: 85 dB

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Earthquake Sound SWS-6.5X

200W Peak (100W RMS) 6.5" SWS Series Dual 4-ohm Shallow-mount Subwoofer

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Earthquake Sound SWS-6.5X

200W Peak (100W RMS) 6.5" SWS Series Dual 4-ohm Shallow-mount Subwoofer

• Peak Power: 200 watts
• RMS Power: 100 watts
• Impedance: Single 4 ohm
• Polypropylene Cone
• Butyl Rubber Surround
• Mount depth: 1-3/4"
• Sensitivity: 77.3 dB

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DS18 ZR8.2D

900W Peak (450W RMS) 8" ZR Series Dual 2-ohm Car Subwoofer

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DS18 ZR8.2D

900W Peak (450W RMS) 8" ZR Series Dual 2-ohm Car Subwoofer

• Peak Power: 900 watts
• RMS Power: 450 watts
• Non-Pressed Paper Cone
• Foam Surround
• Impedance: Dual 2 ohm
• Mount depth: 4.4"
• Sensitivity: 82 dB

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Cerwin-Vega V65DV4

1500W Peak (500W RMS) 6.5" Vega Series Dual 4-ohm Subwoofer

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Cerwin-Vega V65DV4

1500W Peak (500W RMS) 6.5" Vega Series Dual 4-ohm Subwoofer

• Peak Power: 1500 watts
• RMS Power: 500 watts
• Impedance: Dual 4 ohm
• Carbon Fiber Polypropylene Cone
• Santoprene Rubber Surround
• Mount depth: 4.65"
• Sensitivity: 82 dB

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JL Audio 10TW3-D8

400W RMS 10" TW3 Series Dual 8-ohm Shallow Subwoofer

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JL Audio 10TW3-D8

400W RMS 10" TW3 Series Dual 8-ohm Shallow Subwoofer

• RMS Power: 400 watts
• Impedance: Dual 8 ohm
• Polypropylene-Mica Cone
• Rubber Surround
• Mount depth: 3.25"
• Sensitivity: 82.27 dB

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Rockford Fosgate Punch P3 P3D4-15

1200W Peak (600W RMS) 15" Punch Series Dual 4-ohm Car Subwoofer

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Rockford Fosgate Punch P3 P3D4-15

1200W Peak (600W RMS) 15" Punch Series Dual 4-ohm Car Subwoofer

• Peak Power: 1200 watts
• RMS Power: 600 watts
• Impedance: Dual 4 ohm
• Anodized Aluminum Cone
• Santoprene Rubber Surround
• Sensitivity: 86 dB

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Diamond Audio DES84 (Open Box, Great)

500W Peak (250W RMS) 8" DES Series Dual 4-ohm Car Subwoofer

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Diamond Audio DES84 (Open Box, Great)

500W Peak (250W RMS) 8" DES Series Dual 4-ohm Car Subwoofer

• Peak Power: 500 watts
• RMS Power: 250 watts
• Fiber-Reinforced High Strength Paper Cone
• Impedance: Dual 4 ohm
• Sensitivity: 82.1 dB

10% Off Open Box!
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• Peak Power: 500 watts
• RMS Power: 250 watts
• Fiber-Reinforced High Strength Paper Cone
• Impedance: Dual 4 ohm
• Sensitivity: 82.1 dB

American Bass VFL Comp Signature 18" (VFLCOMP-1822)

10000W Peak (5000W RMS) 18" VFL Competition Series Dual 2-ohm Subwoofer

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American Bass VFL Comp Signature 18" (VFLCOMP-1822)

10000W Peak (5000W RMS) 18" VFL Competition Series Dual 2-ohm Subwoofer

• Peak Power: 10000 watts
• RMS Power: 5000 watts
• Impedance: Dual 2 ohm
• Kevlar Fiber-Enforced Non-Pressed Paper cone
• High Roll Foam surround
• Mount depth: 11"

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Alpine R2-W12D2

2250W Peak (750W RMS) 12" R2-Series Dual 2-ohm Car Subwoofer

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Alpine R2-W12D2

2250W Peak (750W RMS) 12" R2-Series Dual 2-ohm Car Subwoofer

• Peak Power: 2250 watts
• RMS Power: 750 watts
• Impedance: Dual 2 ohm
• Kevlar Reinforced Pulp Paper Cone
• High-Amplitude Multi-Roll (HAMR) Surround
• Mount depth: 6.43"
• Sensitivity: 85 dB

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NVX YSW124

1600W Peak (800W RMS) 12" Y-Series Dual 4-ohm Car Subwoofer

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NVX YSW124

1600W Peak (800W RMS) 12" Y-Series Dual 4-ohm Car Subwoofer

• Peak Power: 1600 watts
• RMS Power: 800 watts
• Impedance: Dual 4 ohm
• Enhanced Pressed Paper Cone
• High Roll Foam Surround
• Mount depth: 6.5"
• Sensitivity: 85 dB

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Rockford Fosgate Punch P2 P2D2-8

500W Peak (250W RMS) 8" Punch Series Dual 2-ohm Car Subwoofer

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Rockford Fosgate Punch P2 P2D2-8

500W Peak (250W RMS) 8" Punch Series Dual 2-ohm Car Subwoofer

• Peak Power: 500 watts
• RMS Power: 250 watts
• Impedance: Dual 2 ohm
• Kevlar Reinforced Pulp Paper Cone
• Rubber Surround
• Mount depth: 4.76"
• Sensitivity: 83 dB

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Sundown Audio SA-12 Classic D2 12" (SA12CLD2)

2000W Peak (1000W RMS) 12" SA Classic Series Dual 2-ohm Car Subwoofer (SW-SACL12D2)

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Sundown Audio SA-12 Classic D2 12" (SA12CLD2)

2000W Peak (1000W RMS) 12" SA Classic Series Dual 2-ohm Car Subwoofer (SW-SACL12D2)

• Peak Power: 2000 watts
• RMS Power: 1000 watts
• Impedance: Dual 2 ohm
• Competition Grade Paper Cone
• Treated Foam Surround
• Mount depth: 6.5"
• Sensitivity: 83.21 dB

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List price $407.99
-17% $339.99

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Tru Spec Dual 8" (1458GTO)

Empty Dual 8" Vented Prefabricated Enclosure for Sundown SA8V2 Subwoofers

Dual 8” big
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Tru Spec Dual 8" (1458GTO)

Empty Dual 8" Vented Prefabricated Enclosure for Sundown SA8V2 Subwoofers

• 8" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 1.30 cubic feet
• Compatible for Sundown SA8V2 and similar subwoofers (Sold separately)

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Universal Icon Universal – fits most vehicles.

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List price $239.99
-33% $159.99

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    FAQ for Subwoofer and Sub Box Upgrades in 1989 Spectrum

    Q: Can I upgrade or change the Subwoofer and Sub Box Upgrades in 1989 Geo Spectrum?

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