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OSCA Vintage Collection

*RARE* 90's Aura Pro Bass Shaker Tactile Bass Transducers (Pair)
*RARE* 90's Aura Pro Bass Shaker Tactile Bass Transducers (Pair)
*RARE* 90's Aura Pro Bass Shaker Tactile Bass Transducers (Pair)
*RARE* 90's Aura Pro Bass Shaker Tactile Bass Transducers (Pair)
*RARE* 90's Aura Pro Bass Shaker Tactile Bass Transducers (Pair)
*RARE* 90's Aura Pro Bass Shaker Tactile Bass Transducers (Pair)

Marca:Aura Systems

*RARE* 90's Aura Pro Bass Shaker Tactile Bass Transducers (Pair)

Precio de oferta$99.00Precio habitual $199.00

1990s Aura Pro Bass Shaker AST-2B-4 50W Tactile Bass Transducers X2 | New Old Stock (NOS) Car Audio

The Aura Pro Bass Shaker is a distinctive tactile bass enhancement system from the 1990s car audio era, designed to make low frequencies physically felt rather than simply heard. Each transducer converts low-frequency amplifier signals into vibrations transmitted through the vehicle structure, creating a stronger sensation of bass without requiring a large subwoofer enclosure. Rated at 50W nominal per unit, with a 4Ω impedance and 20–80Hz operating range, the Pro Bass Shaker was designed for discreet under-seat installation. An unusual piece of 1990s car audio engineering, reflecting an era when manufacturers experimented with new ways to experience music on the road.

New Old Stock (NOS) condition: Both bass shakers remain unused in their original protective wrapping and original Aura retail box and internal packaging. The box shows noticeable age-related scuffing and surface marks.

All OSCA Vintage Series products have been professionally powered-on and functionally bench-tested ✅

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Product details

Advanced Specifications
  • Brand: Aura Systems
  • Product: Pro Bass Shaker
  • Model Family: AST-2B-4
  • Product Type: Tactile bass transducers / bass enhancers
  • Era: Mid-to-late 1990s
  • Quantity: 2 bass shakers
  • Nominal Power Handling: 50W per shaker
  • Maximum Power Handling: 75W per shaker (original packaging rating)
  • Nominal Impedance: 4Ω per shaker
  • Usable Frequency Range: 20–80Hz
  • Resonant Frequency: 40Hz
  • Nominal Force: 15lbf (approximately 67N)
  • Magnet Type: Ceramic
  • Overall Dimensions: Approximately 6.2" diameter × 2.2" height per shaker
  • Frame Dimensions: 5.4" × 2.2"
  • Installation: Under-seat or suitable rigid-surface mounting
  • Power Requirements: External amplifier required
  • Design Heritage: Designed and engineered in the USA
Key Features
  • Tactile Bass Enhancement transfers low-frequency vibrations through the mounting surface for a physical bass experience.
  • 50W Nominal Power Handling allows each shaker to operate using a suitable external amplifier.
  • Compact Under-Seat Design delivers tactile bass without occupying valuable boot space.
  • 20–80Hz Operating Range targets the low-frequency energy associated with bass impact.
  • Dual-Shaker Configuration provides separate transducers for installation beneath two seating positions.
  • Original Aura Engineering features a finned metal housing, ceramic magnetic system and speaker-style terminals.
Installation Notes
  • External amplifier required: The shakers are passive devices, rated at 50W nominal and 4Ω each.
  • Mounting: Designed for firm contact with a suitable mounting surface, traditionally beneath the vehicle seats.
  • Two 4Ω shakers present an 8Ω load in series or 2Ω in parallel; amplifier compatibility must be confirmed.
  • Adds physical bass sensation rather than replacing the audible low-frequency output of a properly designed sound system.
OSCA Fun Fact

Before entering car audio, Aura Systems developed advanced electromagnetic technology for US government defence projects, including the famous “Star Wars” missile defence programme. The company later applied its expertise to tactile bass technology, filing an electromagnetic transducer patent in 1993, which was granted in 1995. An unusual connection between military research and the bass-heavy car audio culture of the '90s!
AST-2B-4 Installation Guide Aura Systems Patent US5424592A

Shaking Up the '90s

During the 1990s, car audio was increasingly about the physical impact of music, with powerful subwoofers and elaborate custom installations becoming part of enthusiast culture. Aura Systems approached the bass craze differently, creating tactile transducers that transferred low-frequency energy directly into the vehicle structure. Instead of relying entirely on large speaker enclosures and high sound-pressure levels, its Bass Shaker range offered another way to experience bass. The Pro Bass Shaker captures this experimental side of the era, when car audio manufacturers were pushing beyond conventional sound reproduction.

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