Quantum Audio
Quantum Audio delivers a diverse range of car audio products, from amplifiers and speakers to subwoofers and complete sound systems, all engineered for exceptional performance and precision. Whether you're upgrading your current audio system or building an entirely new one, Quantum Audio provides the perfect solutions to transform your in-car sound experience. Shop now with Designer Motorsports for great prices, free shipping and fast customer service support! Be sure to join our affiliate program for exclusive low prices!
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Quantum Audio QWX 8 Inch 4000W Max DVC 4 Ohm Subwoofers | QWX4000/8D4 (Pair)
Quantum Audio
Price: $279.96Quantum Audio QWX 8 Inch 4000W Max DVC 4 Ohm Subwoofers | QWX4000/8D4 (Pair) The Quantum Audio QWX4000/8D4 is a high-performance 8-inch dual 4-ohm subwoofer part of the Quantum X series, engineered...Price: $279.96 -
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Quantum Audio QWX 8 Inch 4000W Max DVC 4 Ohm Subwoofer | QWX4000/8D4
Quantum Audio
Price: $139.98(1) Quantum Audio QWX 8 Inch 4000W Max DVC 4 Ohm Subwoofer | QWX4000/8D4 The Quantum Audio QWX4000/8D4 is a high-performance 8-inch dual 4-ohm subwoofer part of the Quantum X series, engineered for...Price: $139.98 -
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Quantum Audio QWX 12 Package | Dual 12" 2000W D4 Subwoofers & QPower HD Ported Box
Quantum Audio
On Sale: $334.99Was: $424.95Quantum Audio QWX 12 Package | Dual 12" 2000W D4 Subwoofers & QPower HD Ported Box The Quantum Audio QWX2000/12D4 is a 12-inch high-excursion subwoofer from the QWX series, designed to deliver deep,...On Sale: $334.99Was: $424.95 -
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Quantum Audio QWX 12 Package | Dual 12" 2000W D4 Subwoofers & QPower Sealed Box
Quantum Audio
On Sale: $319.96Was: $394.95Quantum Audio QWX 12 Package | Dual 12" 2000W D4 Subwoofers & QPower Sealed Box The Quantum Audio QWX2000/12D4 is a 12-inch high-excursion subwoofer from the QWX series, designed to deliver deep,...On Sale: $319.96Was: $394.95 -
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Quantum Audio QWX 12 Package | 12" 2000W D4 Subwoofer & QBomb Kerf Ported Box
Quantum Audio
On Sale: $229.99Was: $269.97Quantum Audio QWX 12 Package | 12" 2000W D4 Subwoofer & QBomb Kerf Ported Box The Quantum Audio QWX2000/12D4 is a 12-inch high-excursion subwoofer from the QWX series, designed to deliver deep, heavy...On Sale: $229.99Was: $269.97 -
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Quantum Audio QWX 12 Package | 12" 2000W D4 Subwoofer & QPower HD Ported Box
Quantum Audio
On Sale: $179.99Was: $224.97Quantum Audio QWX 12 Package | 12" 2000W D4 Subwoofer & QPower HD Ported Box The Quantum Audio QWX2000/12D4 is a 12-inch high-excursion subwoofer from the QWX series, designed to deliver deep, heavy...On Sale: $179.99Was: $224.97 -
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Quantum Audio QWX 12 Inch 2000W Max DVC 4 Ohm Subwoofers | QWX2000/12D4 (Pair)
Quantum Audio
Price: $319.96Quantum Audio QWX 12 Inch 2000W Max DVC 4 Ohm Subwoofers | QWX2000/12D4 (Pair) The Quantum Audio QWX2000/12D4 is a 12-inch high-excursion subwoofer from the QWX series, designed to deliver deep,...Price: $319.96 -
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Quantum Audio QWX 12 Inch 2000W Max DVC 4 Ohm Subwoofer | QWX2000/12D4
Quantum Audio
Price: $159.98(1) Quantum Audio QWX 12 Inch 2000W Max DVC 4 Ohm Subwoofer | QWX2000/12D4 The Quantum Audio QWX2000/12D4 is a 12-inch high-excursion subwoofer from the QWX series, designed to deliver deep, heavy...Price: $159.98 -
Quantum Audio QSX8CD | 8 Inch 700W 4 Ohm 2-Way Coaxial Pro Speakers (4 Pack)
Quantum Audio
Price: $459.96Quantum Audio QSX8CD | 8 Inch 700W 4 Ohm 2-Way Coaxial Pro Speakers (4 Pack) The Quantum Audio QSX8CD is a high-output 8-inch 2-way "Powersport" coaxial loudspeaker. It is a "point-source" pro-audio...Price: $459.96 -
Quantum Audio QSX8CD | 8 Inch 700W 4 Ohm 2-Way Coaxial Pro Speakers (Pair)
Quantum Audio
Price: $229.98Quantum Audio QSX8CD | 8 Inch 700W 4 Ohm 2-Way Coaxial Pro Speakers (Pair) The Quantum Audio QSX8CD is a high-output 8-inch 2-way "Powersport" coaxial loudspeaker. It is a "point-source" pro-audio...Price: $229.98 -
Quantum Audio QSX69CD | 6x9 Inch 700W 4 Ohm 2-Way Coaxial Pro Speakers (4 Pack)
Quantum Audio
Price: $459.96Quantum Audio QSX69CD | 6x9 Inch 700W 4 Ohm 2-Way Coaxial Pro Speakers (4 Pack) The Quantum Audio QSX69CD is the 6x9-inch version of the high-output "Powersport" series. It is a 2-way coaxial speaker...Price: $459.96 -
Quantum Audio QSX69CD | 6x9 Inch 700W 4 Ohm 2-Way Coaxial Pro Speakers (Pair)
Quantum Audio
Price: $229.98Quantum Audio QSX69CD | 6x9 Inch 700W 4 Ohm 2-Way Coaxial Pro Speakers (Pair) The Quantum Audio QSX69CD is the 6x9-inch version of the high-output "Powersport" series. It is a 2-way coaxial speaker...Price: $229.98