Bose Free Space 51 Environmental Outdoor Landscape Speakers Pair – Green, Used Good

Bring wide, immersive Bose sound to your garden, patio, deck, pool area, or other outdoor space with this pair of Bose Free Space 51 Environmental Outdoor Landscape Speakers in Green. Designed for permanent outdoor installation, each Free Space 51 uses Bose's radial acoustic design to distribute sound broadly throughout the surrounding area while blending naturally into outdoor landscaping.

This listing includes two Bose Free Space 51 speakers sold together as one pair.

Condition

Used – Good

This pre-owned pair of Bose Free Space 51 outdoor speakers has been inspected and is in good cosmetic and working condition. The speakers may show normal signs of previous outdoor installation or use, including cosmetic wear, marks, fading, or surface imperfections that do not affect normal operation.

Please review all actual product photographs carefully for the exact cosmetic condition of both speakers.

What's Included

• Two Bose Free Space 51 Environmental Outdoor Speakers – Green

This listing is for one matched pair / two speakers.

Speaker wire, wire connectors, mounting hardware, amplifier, receiver, and other accessories are not included unless specifically shown in the actual product photographs.

Key Features

• Pair of Bose Free Space 51 environmental outdoor speakers
• Two-speaker / 2.0 stereo configuration
• Broad radial outdoor sound dispersion
• One 4.5-inch environmental full-range driver per speaker
• 50W IEC continuous power handling per speaker
• Compatible with amplifiers and receivers rated 10–100 watts per channel
• Compatible with 4–8 ohm amplifier or receiver outputs
• Designed for permanent outdoor installation
• Weather-resistant construction
• Designed to withstand rain, snow, sun, salt fog, and high humidity
• Designed for temperatures from -40°F to 158°F (-40°C to 70°C)
• Suitable for in-ground or surface installation
• Textured green enclosures designed to blend into landscaping
• Passive wired speaker design

Outdoor Stereo Sound

Using two Bose Free Space 51 speakers provides a complete left-and-right outdoor speaker pair for stereo music reproduction across patios, gardens, pool areas, decks, and landscaped spaces.

The radial acoustic design helps distribute sound broadly around each speaker, providing more consistent coverage across an outdoor listening area.

4.5-Inch Environmental Drivers

Each Free Space 51 speaker contains one 4.5-inch full-range environmental driver engineered for outdoor audio reproduction.

The enclosure and acoustic design help reproduce music with balanced midrange, treble, and low-frequency performance in open outdoor environments.

Designed for Permanent Outdoor Use

The Bose Free Space 51 is designed for long-term outdoor installation and exposure to demanding environmental conditions.

Bose specifies resistance to salt fog, sun, high humidity, rain, snow, and temperatures ranging from approximately -40°F to 158°F (-40°C to 70°C).

In-Ground or Surface Installation

The speakers can be installed partially in the ground or positioned on a suitable hard, level surface.

The base of each speaker includes mounting holes and wire-routing grooves to help provide stable installation and organized speaker-wire routing.

For in-ground installations, Bose recommends adequate drainage and specifies that each speaker should not be buried deeper than approximately 7¼ inches.

Amplifier & Receiver Compatibility

The Bose Free Space 51 speakers are passive wired speakers and require a separate compatible amplifier or receiver.

• IEC Continuous Power Handling: 50 watts per speaker
• Recommended Amplifier / Receiver Power: 10–100 watts per channel
• Compatible Amplifier / Receiver Impedance: 4–8 ohms

Please verify compatibility with your amplifier or receiver before installation.

Wired Speaker Connection

The Free Space 51 connects using conventional speaker wire.

These are not Bluetooth, Wi-Fi, powered, or smart speakers. A compatible amplifier or receiver and speaker wire are required for operation.

Product Information

• Brand: Bose
• Product: Free Space 51 Environmental Outdoor Speakers
• Model: Free Space 51
• Manufacturer Part Number: 31763
• UPC / GTIN: 017817325455
• Product Type: Outdoor Landscape Speakers
• Quantity: Two Speakers / One Pair
• Speaker Configuration: 2.0 Stereo Pair
• Color: Green
• Condition: Used – Good
• Speaker Type: Passive Wired Outdoor Speakers
• Driver: One 4.5-inch full-range environmental driver per speaker
• IEC Continuous Power Handling: 50 watts per speaker
• Recommended Amplifier Power: 10–100 watts per channel
• Compatible Amplifier Impedance: 4–8 ohms
• Dimensions: Approximately 14.5-inch diameter × 15-inch height per speaker
• Weight: Approximately 12 lb per speaker / 24 lb pair

Important Purchase Information

This listing includes TWO Bose Free Space 51 Environmental Outdoor Speakers sold together as ONE PAIR.

Both speakers are in Used – Good condition and may show cosmetic signs of previous outdoor installation or use.

A compatible amplifier or receiver and speaker wire are required for operation and are not included unless specifically shown.

Please review all actual product photographs carefully before purchasing to confirm the condition of both speakers and all included items.