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JBL Stadium 82SSI

Stadium Series 8" component subwoofer with switchable 2- or 4-ohm impedance

Item # 109STAD8S

JBL has been building high-performance loudspeakers for many decades, so they know something about bass.

JBL has been building high-performance loudspeakers for many decades, so they know something about bass.

Outlet

Item # 109STAD8S

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$249.95 -$17.50 Outlet savings

$232.45 each

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About the JBL Stadium 82SSI

Quality and power

JBL has been building high-performance loudspeakers for many decades, so they know something about bass. They made their latest Stadium Series subwoofers to deliver powerful low-end punch and handle the high wattage of today's car amplifiers while giving you multiple options for installation.

Quality and power

JBL has been building high-performance loudspeakers for many decades, so they know something about bass. They made their latest Stadium Series subwoofers to deliver powerful low-end punch and handle the high wattage of today's car amplifiers while giving you multiple options for installation.

Handles up to 400 watts RMS

The Stadium Series 82SSI 8" sub handles up to 400 watts RMS, and it's optimized for use in a very small sealed enclosure. JBL uses the airflow from the internal works to cool the 2" voice coil, so you can rely on this sub to stay cool in the heat of battle. The sturdy polypropylene cone and nitrile rubber surround will stand up to all the abuses of heavy bass output.

Selectable impedance

This Stadium Series subwoofer features SSI™ (Selectable Smart Impedance), a switch which lets you vary the sub's impedance from 2 ohms to 4 ohms to optimize its effectiveness. If you upgrade your amplifier or decide to add another sub, you'll be able to adjust the 82SSI's impedance to work best with your system.

Versatile power

The terminals on this Stadium Series sub will accept up to 10-gauge wire. You'll get full power from your amp even over long wire runs, so your subwoofer will have the juice you need. See what this JBL sub can do for your system.

READ LESS

Product highlights:

  • 8" high-performance car subwoofer
  • glass fiber/paper laminate cone
  • nitrile rubber surround
  • stamped steel vented basket
  • SSIT (Selectable Smart Impedance): 2 or 4 ohms switchable
  • grille not included
  • power hqandling: 400 watts RMS (1200 watts peak)
  • frequency response: 30-175 Hz
  • sensitivity at 2.83V: 91 dB
  • mounting depth: 5.348"
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # JBLSUBSD82SSIAM

What's in the box:

  • One 8" Subwoofer
  • Screw cover trim ring
  • Adhesive-backed foam gasket
  • Eight 1" Screws
  • Owner's manual (English/ French/ Spanish/ fifteen other languages)

See the difference between "Open Box" and "Scratch & Dent" Outlet items

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More details on the JBL Stadium 82SSI

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Product Research

Features
Enclosure Compatibility
Specifications

Features

Selectable Smart Impedance (SSI): A switch on the input terminal allows you to easily change the woofer's impedance between 2Ω and 4Ω settings. (The connected amplifier should be off when changing the impedance.) The power handling is the same for either setting; 450 watts RMS/1350 watts peak.

Cone: The cone material is a composite of glass fiber over a paper pulp material. Adding the glass fiber layer increases cone rigidity to improve bass accuracy, while the pulp base improves the sub's damping characteristics.

Terminal: The spring terminals will accept bare wire up to 8 gauge.

Enclosure Compatibility

Sealed Box: Infinity recommends a sealed enclosure with an internal volume of 0.5 ft³. Sealed enclosures provide the most control over a woofer and provide accurate sonic reproduction, making them suitable to all types of music.

Ported Box: Infinity recommends a ported enclosure with an internal volume of 1.0 ft³ with one 3" diameter x 10" long port, resulting in a tuning frequency of 45 Hz. They also recommend using a sub-sonic filter. Ported enclosures typically provide better overall efficiency than sealed so they are suitable for use with smaller amplifiers, giving you more bass output from a given amount of power.

Free-air Mounting: In addition to being compatible with sealed and ported enclosures, the woofer can be used in free-air applications. A free-air subwoofer is designed to be mounted on a baffle board, which separates the front of the speaker from the back. For instance, you could mount this woofer to a board attached to the rear deck or placed in the trunk against the rear seat. The trunk acts as the enclosure housing the subwoofer. Because there is no specific volume of air to stiffen the suspension, the free-air power handling is approximately half that of the woofer in a box, in this case 200 watts RMS.

Specifications

Thiele-Small Parameters: Because the woofer has two impedance settings, there are two sets of Thiele-Small parameters:

 
DC Resistance (Ω) 2.26 4.71
Inductance (mH) 1.48 1.406
Vas (liters) 9.12 9.759
Qms 4.13 2.438
Qes 0.632 0.689
Qts 0.548 0.537
Fs (Hz) 42.2 42.3
Radiating Area (cm²) 226.98 226.98
Xmax (mm) 10.25 10.25
Motor Force Factor (TM) 10.375 13.87

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