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 QRS57 | 5x7 Inch 180W 4 Ohm 3-Way Coaxial Speakers (4 Pack)
Quantum Audio
Price: $139.96Quantum Audio QRS57 | 5x7 Inch 180W 4 Ohm 3-Way Coaxial Speakers (4 Pack) The Quantum Audio QRS57 is a 5x7-inch 3-way coaxial speaker designed to provide a rich, full-range audio upgrade for vehicles with oval mounting locations. It features a...Price: $139.96 -
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Quantum Audio QRS57 | 5x7 Inch 180W 4 Ohm 3-Way Coaxial Speakers (Pair)
Quantum Audio
MSRP: $69.98On Sale: $59.98Was: $69.98Quantum Audio QRS57 | 5x7 Inch 180W 4 Ohm 3-Way Coaxial Speakers (Pair) The Quantum Audio QRS57 is a 5x7-inch 3-way coaxial speaker designed to provide a rich, full-range audio upgrade for vehicles with oval mounting locations. It features a multi-driver...MSRP: $69.98On Sale: $59.98Was: $69.98 -
Quantum Audio QRS50 | 5.25 Inch 140W 4 Ohm 3-Way Coaxial Speakers (4 Pack)
Quantum Audio
Price: $139.96Quantum Audio QRS50 | 5.25 Inch 140W 4 Ohm 3-Way Coaxial Speakers (4 Pack) The Quantum Audio QRS50 is a 5.25-inch 3-way coaxial speaker engineered as a high-efficiency replacement for factory door or rear deck speakers. It is designed to provide a...Price: $139.96 -
Quantum Audio QRS50 | 5.25 Inch 140W 4 Ohm 3-Way Coaxial Speakers (Pair)
Quantum Audio
Price: $69.98Quantum Audio QRS50 | 5.25 Inch 140W 4 Ohm 3-Way Coaxial Speakers (Pair) The Quantum Audio QRS50 is a 5.25-inch 3-way coaxial speaker engineered as a high-efficiency replacement for factory door or rear deck speakers. It is designed to provide a...Price: $69.98 -
Quantum Audio QRS46 | 4x6 Inch 130W 4 Ohm 3-Way Coaxial Speakers (4 Pack)
Quantum Audio
Price: $119.96Quantum Audio QRS46 | 4x6 Inch 130W 4 Ohm 3-Way Coaxial Speakers (4 Pack) The Quantum Audio QRS46 is a 4x6-inch 3-way coaxial speaker designed as a high-efficiency replacement for factory car audio systems. It is engineered to provide balanced full-range...Price: $119.96 -
Quantum Audio QRS46 | 4x6 Inch 130W 4 Ohm 3-Way Coaxial Speakers (Pair)
Quantum Audio
Price: $59.98Quantum Audio QRS46 | 4x6 Inch 130W 4 Ohm 3-Way Coaxial Speakers (Pair) The Quantum Audio QRS46 is a 4x6-inch 3-way coaxial speaker designed as a high-efficiency replacement for factory car audio systems. It is engineered to provide balanced full-range...Price: $59.98 -
Quantum Audio QRS40 | 4 Inch 120W 4 Ohm 3-Way Coaxial Speakers (4 Pack)
Quantum Audio
Price: $119.96Quantum Audio QRS40 | 4 Inch 120W 4 Ohm 3-Way Coaxial Speakers (4 Pack) The Quantum Audio QRS40 is a 4-inch, 3-way coaxial car speaker designed as an efficient factory upgrade. It features a compact "easy-fit" design to deliver clear, full-range audio in...Price: $119.96 -
Quantum Audio QRS40 | 4 Inch 120W 4 Ohm 3-Way Coaxial Speakers (Pair)
Quantum Audio
Price: $59.98Quantum Audio QRS40 | 4 Inch 120W 4 Ohm 3-Way Coaxial Speakers (Pair) The Quantum Audio QRS40 is a 4-inch, 3-way coaxial car speaker designed as an efficient factory upgrade. It features a compact "easy-fit" design to deliver clear, full-range audio in...Price: $59.98 -
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Quantum Audio QPT3D | 1 Inch 300W 4 Ohm Pro Bullet Tweeters (4 Pack)
Quantum Audio
Price: $99.96Quantum Audio QPT3D | 1 Inch 300W 4 Ohm Pro Audio Bullet Tweeters (4 Pack) The Quantum Audio QPT3D is a high-performance 1-inch die-cast aluminum bullet tweeter designed for "Pro Audio" style car sound systems. Part of the DB Drive family, it is...Price: $99.96 -
Quantum Audio QPT3D | 1 Inch 300W 4 Ohm Pro Bullet Tweeters (Pair)
Quantum Audio
Price: $49.98Quantum Audio QPT3D | 1 Inch 300W 4 Ohm Pro Bullet Tweeters (Pair) The Quantum Audio QPT3D is a high-performance 1-inch die-cast aluminum bullet tweeter designed for "Pro Audio" style car sound systems. Part of the DB Drive family, it is engineered to...Price: $49.98 -
Quantum Audio QEA3500.1 | 3500W Max Monoblock Subwoofer Amplifier
Quantum Audio
Price: $249.98Quantum Audio QEA3500.1 | 3500W Max Monoblock Subwoofer Amplifier The Quantum Audio QEA3500.1 is a powerful Class D monoblock amplifier designed specifically for driving subwoofers with high efficiency and substantial power output. It is a versatile...Price: $249.98 -
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Quantum Audio QPSM8V4 | 8 Inch 350W 4 Ohm Pro Speakers (4 Pack)
Quantum Audio
Price: $319.92Quantum Audio QPSM8V4 | 8 Inch 350W 4 Ohm Pro Speakers (4 Pack) The Quantum Audio QPSM8V4 is an 8-inch high-efficiency pro audio midrange speaker designed for loud and clear sound in both car audio and professional setups. It is engineered with a...Price: $319.92