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Trinity Audio Dual B Series 15" Subwoofers & LOGIQ-3K 3,000 Watt Monoblock Amplifier

Sale price $999.99 Regular price $1,169.97

Description

The Trinity B Series 15" Subwoofer 1,500 Watts RMS is built for bass enthusiasts who want deep, controlled low-end without extensive electrical mods or premium amplification. Built on the M and H series knowledge, it combines a cast basket, a 3" high-temperature dual voice coil, and a high-excursion design with a double-stacked motor and FEA cooling for reliable, high-output performance.

  • 1,500 Watts RMS power handling: Handles continuous bass energy to deliver deep, impactful low end without clipping when paired with an appropriate amplifier.
  • 3" high-temperature dual voice coil (D2/D4 variants): Dual coils provide flexible wiring options and improved heat dissipation, helping maintain performance under demanding use.
  • High-excursion with 10" spiders: Greater cone movement translates to more dynamic bass and louder output while preserving control and clarity.
  • Double-stacked motor design with FEA cooling: Advanced cooling helps keep the voice coil and magnet assembly cooler during extended high-power operation.
  • Cast basket and all-black design: Durable chassis with a premium aesthetic that suits high-end builds while resisting rigid service conditions.
  • Flexible enclosure compatibility: Optimized for ported, 4th order, and 6th order bandpass boxes to maximize bass response across varied vehicle cabins.
  • Recone kits available: Convenient maintenance option to restore original performance over time.
  • 1-year manufacturer warranty: Provides coverage for peace of mind on installation longevity.
  • Impedance and sensitivity variants: Re: 1.9 Ω + 1.9 Ω (D2) or 3.2 Ω + 3.2 Ω (D4); SPL around 90.1–90.6 dB depending on variant.

In a typical car audio build, this 15" driver offers substantial low-end presence with solid efficiency for its size, thanks to its large radiating area and high BL•S characteristics. The combination of a robust chassis, high-excursion capability, and multiple enclosure options makes it well-suited as a primary bass driver in tuned ported or multi-order enclosures, while the available recone kits and warranty support long-term reliability and performance.


Driver B15 D2 B15 D4
FS 27.4 Hz 29.1 Hz
Re 1.9 Ω + 1.9 Ω 3.2 Ω + 3.2 Ω
Qms 4.52 5.65
Qes 0.65 0.71
Qts 0.59 0.63
Mms 481.7 420.6
Cms 0.07 0.07
Sd 124.78 in2 124.78 in2
Vas 68.6 L 67.4 L
Spl 90.1 dB 90.6 dB
BL 21.9 26.3
X-max 18mm 18mm
Outer Diameter 15.55 db 15.55 db
Cutout Diameter 13.78 in 13.78 in
Motor Diameter 7.8 in 7.8 in
Mounting Depth 8.4 in 8.4 in
Displacement .36 ft3 .36 ft3
Coil Dimensions 3" x 50mm 3" x 50mm
Coil Wire Black CCA Black CCA
Ferrite Grade Y35 Y35
Terminal Wire Gauge 8ga 8ga
RMS Power 1,500 1,500
Burst Power 4,500 4,500