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The black IW31-EZ In-Ceiling Speaker from SoundTube Entertainment is a 3” in-wall speaker for applications requiring 8Ω impedance or distributed audio solutions. The speaker incorporates a low-profile grille with a total visible footprint of 5 in2 and an integrated backcan and driver design for compact installations in wall plates.
The in-wall speaker includes a 6-position tap switch with a voice coil direct position. It also includes mounting hardware and features a fast and secure constant-tension SpeedWing mounting system. All components in the speaker are completely weatherized for indoor and outdoor applications.
Engineered for easy installation and low-profile mounting for smaller venues, this in-ceiling speaker is suitable for retail, restaurants, conference rooms, educational facilities, transportation hubs, correctional facilities, or any setting where full-range intelligibility, low-profile design, and in-wall installation ease are paramount. For additional bass response down to 41 Hz (- 10 dB), the SM1001p powered 10” subwoofer (available separately) may be incorporated.
Compact design with a total visible footprint of 5 in2
3" full-range high-extrusion, high-fidelity polypropylene driver with butyl rubber surround
Corrosion-resistant, powder-coated aluminum grille with snap-fit attachment
3.75" deep with integrated backcan, driver, and baffle configuration
Easy installation, blind-mount fixed-wing mounting mechanism with constant tension design that can be attached to walls with thicknesses ranging from 0.1" (2.5mm) to 1.5" (38.1mm)
Weatherized components for indoor/outdoor applications
High-quality black paint finish
In the Box
SoundTube Entertainment IW31-EZ In-Ceiling Speaker (Black)
Limited 5-Year Warranty
Table of Contents
3" (8 cm) full-range, in-wall (20 W transformer for 25/70.7/100 V or voice-coil direct)
8 ohms (nominal)
Impedance listed per IEC 60268-5 with a minimum less than 80% of the nominal impedance.
87.0 dB @ 2.83 V / 1 m 87.0 dB @ 1 W / 1 m
1 W / 1 m sensitivity determined using nominal impedance.
130 Hz to 22 kHz (- 3 dB) 110 Hz to 22 kHz (- 10 dB)
Frequency response measured in half or full space as dictated by speaker mounting configuration.
Max. Program Power
Maximum program power is 3 dB above maximum continuous power.
Max. Continuous Power RMS
Continuous power rating, EIA-426-B test.
Max. Power SPL
100 dB @ 1 m
Maximum output based on maximum continuous power
Averaged 100 Hz to 10 kHz, 2 kHz (Q)
Averaged 100 Hz to 10 kHz, 2 kHz (DI)
Six-position rotary switch or voice coil direct (transformer accessory only)
70.7 V Output 20 W (100 dB) 10 W @ (97 dB) 5 W @ (94 dB) 2.5 W @ (91 dB) 1.25 W @ (88 dB)
100 V Output 20 W (100 dB) 10 W (97 dB) 5 W (94 dB) 2.5 W (91 dB)
25 V Output 5 W (94 dB) 2.5 W (91 dB) 1.25 W (88 dB) 0.63 W (85 dB) 0.32 W (82 dB)