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NEW Dayton Audio SS18-PR 18" Signature Series Passive Radiator

Dayton AudioPart # 295-737
Model: SS18-PR
The Dayton Audio SS18-PR 18" Signature Series Passive Radiator is built for subwoofer systems capable of extreme output and incredible low-frequency extension. Designed to perfectly complement the SS18-22, this passive radiator features the same rugged cast aluminum frame, thick anodized aluminum cone, and high-roll rubber surround, giving it the strength and excursion capability required for the most demanding applications. With Dayton Audio’s Sandwich Mass Structure (SMS) tuning system, customizing your system’s response for earth-shaking performance has never been easier.

Key Features

  • Signature Series styling with cast alumSandwich Mass Structure (SMS) keeps added mass stable and symmetrical between spider and surroundinum frame, aluminum cone, and rubber surround — visually identical to the SS18-22 driver
  • Sandwich Mass Structure (SMS) keeps added mass stable and symmetrical between spider and surround
  • Passive radiator design enables extreme low-end extension without the turbulence or cabinet size of large ports
  • Secure, adjustable tuning with threaded bolt, wing nut, and nylock nut assembly
  • Perfect companion for the Dayton Audio SS18-22 in extreme-output passive radiator systems
  • Perfect companion for the Dayton Audio SS18-22 in extreme-output passive radiator systems
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Overview

Dayton Audio SS18-PR 18" Signature Series Passive Radiator

Dayton Audio SS18-PR 18" Signature Series Passive Radiator

The Dayton Audio SS18-PR 18" Signature Series Passive Radiator is engineered for subwoofer systems where only the deepest, most powerful bass will do. When paired with the SS18-22, it makes it possible to achieve extreme low-frequency extension and earth-shaking output without the turbulence, noise, or oversized cabinet requirements of vented designs. Perfect for dedicated home theater rooms and ultra-high-output music systems, the SS18-PR delivers the tuning flexibility and rugged performance required for the most demanding installations.

Signature Series Styling and Construction

Built to visually and mechanically match the SS18-22, the SS18-PR uses a heavy-duty cast aluminum frame, thick anodized aluminum cone, and high-roll rubber surround. From the front, it looks identical to the powered driver, giving large systems a clean, unified appearance. Its suspension and cone are designed to handle the extreme excursion necessary to complement today’s most powerful subwoofers while maintaining accurate, low-distortion motion.

Innovative Sandwich Mass Structure

The SS18-PR incorporates Dayton Audio’s Sandwich Mass Structure (SMS) tuning system, which places all added mass between the spider and surround. This symmetrical design ensures stability under heavy excursion, keeping performance consistent even at extreme output levels. The threaded bolt with wing nut and nylock nut makes adjustment easy and secure, while the included five 116 g weights allow precise control over system tuning.

Extreme-Output Performance — the Ultimate Match for the SS18-22

For enthusiasts and designers seeking maximum performance from their subwoofer systems, the Dayton Audio SS18-PR offers the ideal combination of rugged construction, precise tuning, and seamless Signature Series styling. Capable of supporting the most extreme-output subwoofer designs, it makes earth-shaking bass extension achievable without compromise.

Package Contents

  • (1) Passive Radiator
  • (5) 116 gram disk weights
  • (1) Nylon locking nut (for final assembly)
  • (1) Wing Nut

Tip: As a general rule, the passive radiator(s) should have at least double the displacement of air (Vd) as the active woofer(s)/subwoofer(s) in the system. To calculate Vd=Xmax ∗ Sd

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    Note: Passive raidator specs listed below measured with no additional mass included.

    Product Details

    BrandDayton Audio
    ModelSS18-PR
    Part Number295-737
    UPC848791011191
    Unit of MeasureEach
    Weight12

    Product Specifications

    Nominal Diameter18"
    Bolt Circle Diameter17.6

    Thiele-Small Parameters

    Resonant Frequency (Fs)20Hz
    Mechanical Q (Qms)7.74
    Compliance Equivalent Volume (Vas)12.4ft³
    Mechanical Compliance of Suspension (Cms)0.173mm/N
    Diaphragm Mass Inc. Airload (Mms)365g
    Maximum Linear Excursion (Xmax)45mm
    Surface Area of Cone (Sd)1194.6cm²

    Materials of Construction

    Cone MaterialAluminum
    Surround MaterialRubber
    Basket / Frame MaterialCast Aluminum

    Mounting Information

    Overall Outside Diameter18.5"
    Baffle Cutout Diameter16.8"
    Depth5.65"
    # Mounting Holes8

    Specifications

    Q&A

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    Manuals & Resources

    California Prop 65

    WARNING: Cancer and Reproductive Harm

    www.P65Warnings.ca.gov