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OSD Forza-850T Outdoor Speaker

Weatherproof 8" in-ground 2-way speaker

Item # 452FZA850V

A landscape speaker with a 360-degree soundfield for clear music and announcements in outdoor locations.

A landscape speaker with a 360-degree soundfield for clear music and announcements in outdoor locations.

Item # 452FZA850V

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$179.99 each

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About the OSD Forza-850T Outdoor Speaker

360-degree outdoor sound from a single speaker

The OSD Forza-850T can be part of an outdoor sound system for your home or place of business. It handles up to 200 watts of power, and has a built-in transformer tap that allows it to fit into a commercial distributed audio system. Its 8" woofer and 1" tweeter are housed in a rugged, hunter-green outdoor enclosure that disperses sound in an encompassing 360-degree pattern. You can mount this speaker above ground or partially bury it in the landscape to present a low profile.

Product highlights:

  • 2-way speaker with 8" polypropylene woofer and 1" Mylar cone tweeter
  • power handling: up to 200 watts
  • frequency response: 42-20,000 Hz
  • 360° horizontal coverage angle
  • multi-tap transformer for 70-volt commercial systems
    • 20, 40, and 60 watt taps
    • 8-ohm bypass for use with standard stereo receiver or amplifier
  • sensitivity: 88 dB
Dimensions and warranty:

What's in the box:

  • 8" 70V In-ground 2-way speaker w/ attached 30" jacketed speaker wire
  • Installation guide

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More details on the OSD Forza-850T Outdoor Speaker

Russ B.

Product Research


Overview: The OSD Forza-850T is an in-ground, 2-way omni-directional speaker designed for distributed 70V and 8Ω audio systems in home and commercial outdoor applications. The in-ground omni speaker is an ideal choice for a variety of landscapes ranging from backyards to amusement parks, providing a full 360˚ of sound dispersion.

Construction: The Forza-850T 2-way in-ground speaker features an 8" polypropylene cone woofer and a 1" Mylar whizzer cone tweeter mounted in a high-impact, resin fiber enclosure. This combination provides deep bass and detailed highs in a wide 360˚ dispersion pattern for broad area coverage.

70V & 8Ω Operation: The OSD Forza-850T features a built-in 60 watt 70V transformer for commercial applications. An 8Ω bypass also allows it to be used in a "standard" speaker configuration with up to 200 watts RMS power handling. A tap-dial located beside the down-firing 2-way driver provides selections for the following:

  • 70V: 20W, 40W, and 60W. 
  • 8Ω: Bypass

Wire Connection: Wiring connection to the Forza-850T speaker is made using the 30" section of jacketed 16-gauge speaker wire attached to the bottom of the enclosure. Direct burial wire is recommended for connecting the speaker and is sold separately.

Landscape Mounting: The Forza-850T is constructed with weatherproof components that are resistant to rain, snow, insects, and dirt, making it ideal for open outdoor spaces. The outdoor speaker should be partially buried, making sure the down-firing driver is exposed.

Note: The OSD Forza-850T is weatherproof, but is not designed to be fully submerged in water.

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