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The sandstone XT850 8” 2-Way Outdoor In-Ground Speaker from SoundTube Entertainment is an outdoor loudspeaker solution for full-range background/foreground music and paging. The sealed, in-ground enclosure design delivers true low end response (59 Hz, - 10 dB) and optimal off axis performance. The Speaker includes theft-resistant mounting hardware and a weather-proof 5-position tap switch for 25/70.7/100V applications with a 4Ω voice coil direct position.
The BroadBeam dispersion technology utilizes an advanced diffuser/tweeter system to provide maximum dispersion of the higher frequencies throughout the 360° horizontal by 40° vertical coverage pattern. The enclosure is engineered for durability and performance. It incorporates ZeroReflection internal shaping to create an effective environment for sound reproduction.
The wide 360° horizontal dispersion pattern makes the XT850 Speaker suitable for use in theme parks, promenades, playgrounds, shopping malls, restaurants, resorts, gardens, and other outdoor applications. It comes with in-ground anti-theft brackets and stainless-steel square-tip screws for increased outdoor security.
UV-, scratch-, and weather-resistant with professional-grade components for performance and durability
Features a 8" weatherproof polypropylene woofer with butyl rubber surround and 1" aluminum dome tweeter with integrated horn and mounting bracket
Weather-proof 5-position tap switch for 25/70.7/100V applications with voice coil direct (4 Ω) position
64W transformer included
Durable and sealed ZeroReflection enclosure with optional port vent for added frequency response
Liquid-tight compression fittings for water-tight protection
Multiple wire inlet locations for fast and easy daisy chaining
Stainless steel fasteners and grille
In the Box
SoundTube Entertainment XT850 8" 2-Way Outdoor In-Ground Speaker (Sandstone)
Water-Tight Strain Relief
Limited 5-Year Warranty
Table of Contents
8" coax outdoor (64 W transformer for 25/70.7/100 V or voice coil/8 Ω direct)
At 1 W/m: 90 dB
2.83 V at a distance of 3.3' (1.0 m)
-3 dB: 76 Hz to 10 kHz -10 dB: 59 Hz to 22 kHz
Frequency response measured in half space
Program Power: 200 W Continuous Power RMS: 100 W
Continuous power rating, EIA-426-B test
Max SPL Level
112 dB @ 3.3' (1.0 m)
-6 dB @ 2 kHz / 10 kHz / 2 to 10 kHz: 360º horizontal and 40º vertical
5-Position rotary switch with voice coil direct (4 Ω)
Low Frequency Driver
1 x 8" (203 mm) polypropylene cone with butyl rubber surround
High Frequency Driver
1 x 1" (25 mm) aluminum dome
Low Frequency Voice Coil
1.26" (32 mm)
Low-Pass & High-Pass: 6 dB per octave, 1st order
Roto-molded polyethylene plastic
Stainless-steel with powder-coat finish
18-Gauge wire lead
70.7 V Output: 64 W (108 dB), 32 W (105 dB), 16 W (102 dB), and 8 W (99 W) 100 V Output: 64 W (108 dB), 32 W (105 dB), and 16 W (102 dB) 25 V Output: 8 W (99 dB), 4 W (96 dB), 2 W (93 dB), and 1 W (90 dB)