SoundTube SM400I-BK 4-Inch Surface Mount Speaker, Black

SKU: SOUNT-SM400IBK Category:
Brand: SoundTube


The SM400i is a 4-inch, coaxial, ported speaker with a low-profile surface mount enclosure design for indoor/outdoor applications that delivers a consistent dispersion pattern (2 to 10 kHz, independently verified.) Mounting hardware isincluded and features a corrosion and theft resistant Stealth U-bracket for easy and secure installation. Nearly invisible from sightlines, the Stealth U-bracket includes one way fasteners for tool-free, theft-resistant security. SoundTube’s custom engineered driver and electro acoustic network deliver high performance sound in a cost-effective surface mount speaker design. The SM400i speaker incorporates a five-position tap switch with transformer bypass position for simplified ordering and stocking. Corrosion and theft resistant U-bracket mount with safety cable, Euroblock connector, paint mask, terminal weather boot, and port plugs are icluded. Included port plugs can be used for added weather resisitance.

Technical Specifications

6.97 in / 177 mm
9.68 in / 245.9 mm
Shipping Weight
7.3 kg / 3.31 kg
Carton Height
9.5 in / 241.3 mm
Carton Length
11.75 in / 298.45 mm
Carton Width
9.25 in / 234.95 mm
CE, RoHS, UL1480A
Enclosure Properties
ABS Glass Fiber Reinforced, Injection Molded, Ported
Enclosure Volume
154.7 cu in / 2535.08 cu cm
Included Accessories
Euroblock, Port Plug, Safety Cable, Terminal Weather Boot, U-Bracket
Optional Accessories
Black Grille (GRL-SM400-BK)|Black Bracket (AC-SM4-BK)|10" Safety Cable (AC-SM-SC10)|Black Weatherboot (WEATHERBOOT-S-BK)|Connector (EUROBLOCK)
Source Inputs
4 Pin 5.08mm Euroblock
Crossover Frequency
2.3 kHz
Directivity Factor (Q) (Averaged 100Hz – 10kHz, @ 2kHz)
3.7 and 3.9
Directivity Index (DI) dB (Averaged 100Hz – 10kHz, @ 2kHz)
4.9dB and 5.9dB
Frequency Response (+/- 10 dB)
76 Hz – 22 kHz
Frequency Response (+/- 3 dB)
97 Hz – 22 kHz
Grille Properties
Aluminum, Powder-Coated
Low Frequency Voice Coil
1 in / 25.4 mm
Low Pass Crossover
12 dB per octave 2nd order
Magnetically Boosted
Max. Continuous Power RMS
Max. Program Power
35 W
Minimum Impedance (Ohms)
3.7 OHM
Mounting Depth
7.47 in / 189.7 mm
Network Type: High Pass
12 dB per octave 2nd order
Nominal Impedance (Ohms)
Tweeter Driver
1" Convex Aluminum w/ BroadBeam Waveguide
Woofer Driver
4" Polypropylene
Sensitivity dB @ 1W/1M
82.5 dB
Sensitivity dB @ 2.83V/1M
85.5 dB
Tap Selector
Rotary Switch
Transformer Options
25 / 70.7 / 100 V, 4 Ohm direct
Transformer Taps (25V/70.0V/100V)

SKU: SOUNT-SM400IBK Category:

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