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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

Every order includes

  • Free lifetime tech support
  • 60-day price-drop protection
  • 60-day returns
In stock
$326.99 each

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About the OSD Forza-850T Outdoor Speaker

Eric A.

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:
  • 13-7/16" diameter x 15-3/4" high
  • weight: 13 lbs.
  • warranty: 1 year
  • MFR # FORZA-850T70V
  • Item # 452FZA850V
  • California customers: Please click here for your Proposition 65 WARNING.

Separate amplifier required.

What's in the box:

OSD Forza-850T Outdoor Speaker owner's manual

If you need assistance accessing this owner's manual, please give us a call.
  • 8" 70V In-ground 2-way speaker w/ attached 30" jacketed speaker wire
  • Installation guide

More details on the OSD Forza-850T Outdoor Speaker

Russ B.

Features & specs

Installation & setup
Type Landscape
Built-in amplification No
Bluetooth No
Wall-mountable In-ground
Bracket included ---
Connector type Bare-ended 16AWG wire
Driver details
Tweeter type ---
Tweeter size (inches) 1
Midrange size (inches) N/A
Woofer size (inches) 8
Woofer composition ---
Woofer surround ---
Audio specs
Power range (watts) 200
Sensitivity N/A
Impedance (ohms) 8
Frequency response 42Hz-20k Hz
Enclosure Sealed
Dimensions & other info
Height (inches) 15-3/4
Width (inches) 13-7/16
Depth (inches) ---
Weight (pounds) 13
Parts warranty 1 Year
Labor warranty 1 Year

Product Research

Features

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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Customer Q&A

1 question already asked

Q
What setting should I set these speakers at if they are being driven by an original Sonos amp?
matthew  May 29, 2025
1 answer
A
Greetings MJ. Thank you for your question. These can be mono speakers in a 70/100volt commercial set up, or a normal 8 ohm home speaker. Se the switch on these to 8 ohms when using a Sonos amp, or most any home amplifier.
thomas  May 30, 2025 (Staff)

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