Sound Tube XT550 Configuration guide

Install Instructions For:
1.435.647.9555 | 800.647.TUBE | www.soundtube.com
70.7 Volt Transformer Taps (dB) 100 Volt Transformer Taps (dB) 25 Volt Transformer Taps (dB)
XT850
XT550
Transformer Taps Settings
64W=108, 32W=105, 16W=102, 8W=99 64W=108, 32W=105, 16W=102 8W=99, 4W=96, 2W=93, 1W=90
32W=103, 16W=100, 8W=97, 4W=94 32W=103, 16W=100, 8W=97 4W=94, 2W=91, 1W=88, .5W=85
XT Series
Voice Coil
4 Ohm=110 dB
4 Ohm=107 dB
© 2005 SoundTube Entertainment, Inc. All rights reserved. PN INS-XT Rev 05.26.05
#8 Stainless-steel
square-drive screw (x6)
Speaker enclosure
Liquid-tight strain relief
Speaker base
Wire leads
.75" 1/4-20 Stainless-steel bolt
In-ground/security bracket
Box contents
1 In-ground speaker
1 Anti-theft device (2 pieces)
1 Liquid-tight compression fitting
1 Square drive bit
2 Wire nuts
6 #8 stainless-steel square-drive screws
2 .75" 1/4-20 Stainless-steel bolts
XT550, XT550-UL, XT850, and XT850-UL
XT550-UL and XT850-UL UL listed 1480

Install Instructions For:
1.435.647.9555 | 800.647.TUBE | www.soundtube.com
SoundTube speakers must be installed by a professional audio
installer/contractor. For safety and for optimum audio performance,
installer must follow all directions issued by SoundTube Entertainment.
Warning
Port option for XT550
XT Series
1. If needed for daisy chaining
drill speaker base and install
second liquid-tight strain relief
(not included).
2. Attach inground/security
brackets to speaker base
using stainless-steel bolts.
6. Attach signal wire to wire
leads. Use wire nuts pro-
vided. For added water
proofing, grease caps
are recommended.
3. Thread signal wire thru
liquid-tight strain relief
and tighten seal.
4. Place speaker base into
hole in ground with the top
rim of the base at ground
level. Back-fill dirt in to
hole, packing the dirt
firmly. For added security,
cement security brackets
into ground.
7. Set speaker enclosure on
speaker base. Use tamper-
resistant stainless-steel
screws to attach
speaker to base (driver
tip and screws provided).
8. Done!
5. Select the tap position by
removing the rubber plug to
access rotary switch. Switch
is preset to maximum tap
setting in 70.7 V mode
(64W XT850, 32W XT550).
Select desired setting and
reinsert rubber plug.
100 V
70 V
To enhance bass performance,
remove port cover on the
underside of speaker enclosure.
Warning: Removing the cover
will expose internal components
to humidity and other potentially
corrosive elements.
XT550, XT550-UL, XT850, and XT850-UL