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DS18 EXL-X12.4D

2500W Peak (1250W RMS) 12" EXL-X Series Dual 4-ohm Car Subwoofer

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2500W Peak (1250W RMS) 12" EXL-X Series Dual 4-ohm Car Subwoofer

• Peak Power: 2500 watts
• RMS Power: 1250 watts
• Non-Pressed Paper Cone
• Foam Surround
• Impedance: Dual 4 ohm
• Mount depth: 7"
• Sensitivity: 88 dB

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List price $364.95
-18% $299.95

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Only 2 Left!

Hifonics Elite 12" (HEW12D4S)

600W Peak (300W RMS) 12" Hifonics Elite Series Dual 4-ohm Subwoofer

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600W Peak (300W RMS) 12" Hifonics Elite Series Dual 4-ohm Subwoofer

• Peak Power: 600 watts
• RMS Power: 300 watts
• Impedance: Dual 4 ohm
• Woven Fiber Cone
• UV Treated Foam Surround
• Mount depth: 3.17"
• Sensitivity: 85 dB

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List price $169.99
-12% $149.99

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American Bass HD 15" (HD-1522)

4000W Peak (2000W RMS) 15" HD Series Dual 2-ohm Subwoofer

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4000W Peak (2000W RMS) 15" HD Series Dual 2-ohm Subwoofer

• Peak Power: 4000 watts
• RMS Power: 2000 watts
• Impedance: Dual 2 ohm
• Kevlar Fiber-Enforced Non-Pressed Paper Cone
• Oversized 1.4" 3-layer Foam Surround
• Mount depth: 9.4"
• Sensitivity: 88 dB

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List price $650.50
-29% $459.95

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Sundown Audio Z-12 v.7 D1 12" (Z12V7D1)

7000W Peak (3500W RMS) 12" Z Series V7 Dual 1-ohm Car Subwoofer (SW-ZV712D1)

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7000W Peak (3500W RMS) 12" Z Series V7 Dual 1-ohm Car Subwoofer (SW-ZV712D1)

• Peak Power: 7000 watts
• RMS Power: 3500 watts
• Impedance: Dual 1 ohm
• Treated Paper Cone
• Treated Foam Surround
• Sensitivity: 87.18 dB

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List price $1439.99
-13% $1,259.99

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• Peak Power: 7000 watts
• RMS Power: 3500 watts
• Impedance: Dual 1 ohm
• Treated Paper Cone
• Treated Foam Surround
• Sensitivity: 87.18 dB

Massive Audio Hippo H84XR

2000W Peak (1000W RMS) 8" Hippo Series Dual 4-ohm Subwoofer

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2000W Peak (1000W RMS) 8" Hippo Series Dual 4-ohm Subwoofer

• Peak Power: 2000 watts
• RMS Power: 1000 watts
• Impedance: Dual 4 ohm
• Kevlar Fiber-Enforced Non-Pressed Paper Cone
• Tall and narrow Foam Surround
• Mount depth: 5.9"
• Sensitivity: 84 dB

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List price $351.95
-15% $299.99

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American Bass Titanium 844 (TM-844)

600W Peak (300W RMS) 8" Titanium Series Dual 4-ohm Slim Subwoofer

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600W Peak (300W RMS) 8" Titanium Series Dual 4-ohm Slim Subwoofer

• Peak Power: 600 watts
• RMS Power: 300 watts
• Impedance: Dual 4 ohm
• Light Composite Fiber Cone
• EROM Rubber Surround
• Mount depth: 2.80"
• Sensitivity: 83.3 dB

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List price $183.48
-41% $108.06

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American Bass Hawk 15" (HAWK-1544)

3000W Peak (1500W RMS) 15" Hawk Series Dual 4-ohm Subwoofer

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3000W Peak (1500W RMS) 15" Hawk Series Dual 4-ohm Subwoofer

• Peak Power: 3000 watts
• RMS Power: 1500 watts
• Impedance: Dual 4 ohm
• Non-Pressed Paper Cone
• High Roll Foam Surround
• Mount depth: 8.27"
• Sensitivity: 88.2 dB

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List price $418.73
-28% $300.72

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Hifonics Elite 10" (HEW10D4S)

600W Peak (300W RMS) 10" Hifonics Elite Series Dual 4-ohm Shallow Subwoofer

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600W Peak (300W RMS) 10" Hifonics Elite Series Dual 4-ohm Shallow Subwoofer

• Peak Power: 600 watts
• RMS Power: 300 watts
• Impedance: Dual 4 ohm
• Woven Fiber Cone
• UV Treated Foam Surround
• Mount depth: 2.99"
• Sensitivity: 83 dB

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List price $149.99
-13% $129.99

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DS18 Hooligan X 15" (HOOL-X15.4DHE)

6000W Peak (4000W RMS) 15" Hooligan Series Dual 4-ohm Car Subwoofer

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6000W Peak (4000W RMS) 15" Hooligan Series Dual 4-ohm Car Subwoofer

• Peak Power: 6000 watts
• RMS Power: 4000 watts
• Non-Pressed Paper Cone
• Foam Surround
• Impedance: Dual 4 ohm
• Mount depth: 11.19"
• Sensitivity: 88.3 dB

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$959.95

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Massive Audio TKO12S4

600W Peak (300W RMS) 12" TKO Series Single 4-ohm Car Subwoofer

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600W Peak (300W RMS) 12" TKO Series Single 4-ohm Car Subwoofer

• Peak Power: 600 watts
• RMS Power: 300 watts
• Impedance: Single 4 ohm
• Laminate-Treated Paper Cone
• Foam Surround
• Mount depth: 5.83"
• Sensitivity: 89.6 dB

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List price $119.99
-21% $94.99

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Cerwin Vega SPCL182

3200W Peak (1600W RMS) 18" Stroker Pro Classic Series Single 2-ohm Subwoofer

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3200W Peak (1600W RMS) 18" Stroker Pro Classic Series Single 2-ohm Subwoofer

• Peak Power: 3200 watts
• RMS Power: 1600 watts
• Impedance: Single 2 ohm
• Treated Paper cone
• Treated Cloth surround
• Mount depth: 9.4"
• Sensitivity: 95 dB

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List price $2159.99
-17% $1,799.99

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American Bass Godfather 15" (GF-1522)

6000W Peak (3000W RMS) 15" Godfather Series Dual 2-ohm Car Subwoofer

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6000W Peak (3000W RMS) 15" Godfather Series Dual 2-ohm Car Subwoofer

• Peak Power: 6000 watts
• RMS Power: 3000 watts
• Impedance: Dual 2 ohm
• Non-Pressed Paper Cone
• High Roll Foam Surround
• Mount depth: 8.97"
• Sensitivity: 92.1 dB

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List price $1092.28
-37% $688.97

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Sundown Audio Z-10 v.6 D1 10" (Z10V6D1)

6500W Peak (3250W RMS) 10" Z Series Dual 1-ohm Car Subwoofer (SW-ZV610D1)

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6500W Peak (3250W RMS) 10" Z Series Dual 1-ohm Car Subwoofer (SW-ZV610D1)

• Peak Power: 6500 watts
• RMS Power: 3250 watts
• Impedance: Dual 1 ohm
• Treated Paper Cone
• Mega Roll V2 Surround
• Mount depth: 10.96"
• Sensitivity: 81.89 dB

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$899.99

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Sundown Audio PSE-8

250W RMS 8" Dual 4-ohm Powersports Car Subwoofer

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250W RMS 8" Dual 4-ohm Powersports Car Subwoofer

• RMS Power: 250 watts
• Impedance: Dual 4 ohm
• Mount depth: 4.75"
• Compatible with powersports applications

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List price $215.99
-17% $179.99

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DS18 ZR8.4D

900W Peak (450W RMS) 8" ZR Series Dual 4-ohm Car Subwoofer

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900W Peak (450W RMS) 8" ZR Series Dual 4-ohm Car Subwoofer

• Peak Power: 900 watts
• RMS Power: 450 watts
• Non-Pressed Paper Cone
• Foam Surround
• Impedance: Dual 4 ohm
• Mount depth: 4.4"
• Sensitivity: 82 dB

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$119.95

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DC Audio Level 5 18M4D1 (M4LV518D1)

7000W Peak (3500W RMS) 18" Level 5 Series M4 Version Dual 1-ohm Car Subwoofer

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7000W Peak (3500W RMS) 18" Level 5 Series M4 Version Dual 1-ohm Car Subwoofer

• Peak Power: 7000 watts
• RMS Power: 3500 watts
• Impedance: Dual 1 ohm
• Kraft Pulp cone
• Wide Foam surround
• Mount depth: 12.75"

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List price $1539.99
-26% $1,144.99

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American Bass Godfather 18" (GF-1811)

6000W Peak (3000W RMS) 18" Godfather Series Dual 1-ohm Car Subwoofer

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6000W Peak (3000W RMS) 18" Godfather Series Dual 1-ohm Car Subwoofer

• Peak Power: 6000 watts
• RMS Power: 3000 watts
• Impedance: Dual 1 ohm
• Non-Pressed Paper Cone
• High Roll Foam Surround
• Mount depth: 11.22"
• Sensitivity: 92.1 dB

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List price $1205.68
-37% $760.50

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Sundown Audio M-18 D2 18" (M18D2)

4000W Peak (2000W RMS) 18" M Series Dual 2-ohm Car Subwoofer (SW-MD18D2)

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4000W Peak (2000W RMS) 18" M Series Dual 2-ohm Car Subwoofer (SW-MD18D2)

• Peak Power: 4000 watts
• RMS Power: 2000 watts
• Impedance: Dual 2 ohm
• Polypropylene Cone
• High Roll Foam Surround
• Mount depth: 14.05"
• Sensitivity: 86.102 dB

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List price $719.99
$699.99

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AudioControl SPK-8S2

500W RMS 8" Spike Series Single 2-ohm High Performance Car Subwoofer

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500W RMS 8" Spike Series Single 2-ohm High Performance Car Subwoofer

• RMS Power: 500 watts
• Impedance: Single 2 ohm
• Paper Fiber with Mica Coating Cone
• Rubber Surround
• Mount depth: 4.291"
• Sensitivity: 83.38 dB

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List price $229.00
-22% $179.00

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JBL Stage 122D (JBLSUBST122DAM)

1000W Peak (250W RMS) 12" Stage Series Dual 4-ohm Car Subwoofer

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1000W Peak (250W RMS) 12" Stage Series Dual 4-ohm Car Subwoofer

• Peak Power: 1000 watts
• RMS Power: 250 watts
• Impedance: Dual 4 ohm
• Polypropylene Subwoofer Cone material
• Rubber Subwoofer Surround material
• Mount depth: 6"
• Sensitivity: 91 dB

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List price $129.95
-15% $109.95

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    FAQ for Universal Subwoofers in 1999 K3500

    Q: Can I upgrade or change the Universal Subwoofers in 1999 GMC K3500?

    A: Yes this page includes all the best Universal Subwoofers that work in your K3500.

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

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