Diamond Audio 11" DMD Series Shallow Spare Tire Passive Dual Voice Coil Subwoofer (4Ω) - DPSTX12
The DPSTX12 Shallow Spare Tire Passive Subwoofer from Diamond Audio is a space-saving bass solution designed for drivers who want enhanced low-frequency performance without sacrificing trunk space. Engineered to fit directly into the factory spare tire well, this DMD Series subwoofer provides powerful, controlled bass while maintaining a clean, OEM-style appearance.
Featuring an efficient 11-inch shallow-mount subwoofer with a dual 4-ohm voice coil configuration, the DPSTX12 offers flexible wiring options for easy amplifier matching and system customization. Its shallow design allows for proper fitment in compact spare tire locations while still delivering impressive bass output for daily driving and extended listening sessions.
The enclosure is constructed from solid, non-resonant die-cast aluminum, designed to maximize bass response while minimizing vibration and distortion. This rigid construction improves sound accuracy, durability, and heat dissipation, ensuring reliable performance over time. Designed with installation simplicity in mind, the DPSTX12 integrates seamlessly into a wide range of cars, crossovers, and SUVs.
For enthusiasts seeking a passive spare tire subwoofer that delivers clean bass, preserves cargo space, and supports custom amplifier setups, the DPSTX12 is an ideal upgrade solution.
What our Experts Think
-
Space-saving bass upgrade – The DPSTX12 DMD Series subwoofer is designed for spare tire well installations, adding deep bass while keeping your trunk space clean and usable.
-
Shallow-mount 11" design – The compact shallow enclosure design allows easy fitment in vehicles where traditional subwoofer boxes are too large.
-
Powerful DVC performance – Rated at 300W RMS / 600W Max with a 4Ω dual voice coil configuration for flexible amplifier matching.
-
Premium enclosure construction – The non-resonant die-cast aluminum enclosure helps reduce vibration while improving bass accuracy and durability.
-
Clean OEM-style installation – Designed to integrate into the spare tire area without sacrificing everyday cargo capacity.
-
Tight, controlled bass response – The shallow design focuses on efficient low-frequency output, making it ideal for daily driving and factory audio upgrades.
-
Expert choice for stealth builds – A strong option for drivers wanting powerful bass performance without a bulky enclosure taking over the vehicle interior.
Q&A
Q: What is the Diamond Audio DPSTX12 designed for?
A: It is an 11-inch DMD Series shallow spare tire subwoofer designed for space-saving vehicle bass upgrades.
Q: Is the DPSTX12 a passive subwoofer?
A: Yes. It requires an external amplifier to deliver powerful bass performance.
Q: What is the subwoofer impedance?
A: The DPSTX12 features a 4-ohm dual voice coil design for flexible amplifier wiring options.
Q: What are the benefits of a shallow subwoofer design?
A: The compact design allows installation in limited spaces while still providing deep, controlled bass.
Q: Is it suitable for custom car audio systems?
A: Yes. It is ideal for spare tire and stealth installations where strong bass is needed without sacrificing cargo space.
Maintenance Tips
Damage 
Loss 
Theft 
