SM400i Surface-Mount Speaker

Technical Information for System Engineers

spectrum (up to 10 kHz, EASEdocu- mented). The result is an audio system with fewer speakers, reduced power needs, shorter installation time and cost savings on shipping & labor.

Patented SoundTube

Technologies

SoundTube Entertainment is con- stantly developing new technologies that enhance audio product performance. SoundTube Entertainment innovations are protected by multiple U.S. & international patents, which explicitly cover SoundTube dome, enclosure and dispersion technolo- gies. SoundTube Entertainment actively defends its patents in order to protect SoundTube resellers and end users.

Technical Data and

Specification Tools

Technical Data

SoundTube Entertainment strives to provide complete and effective technical information and data to dealers, engineers and designers. All data are available from SoundTube Entertainment or at www.soundtube.com.

Data Acquisition

All performance data acquired at SoundTube’s Technical Measurement Center (TMC) are analyzed using a vari- ety of standard measurement techniques, including Measured Length Sequence (MLS) and Time Delay Spectrometry (TDS). Performance, development and data acquisition tools include: Gold Line TEF 20, CLIO, LMS, LEAP, and propri- etary modeling software. EASE™ data are acquired through an automated TEF 20/Outline/EASEinterface.

EASE™ Data – 3-D polar plots.

SoundTubeSPEC™ – Proprietary SoundTube speaker placement software.

Technical assistance:

SoundTube SPEC™ software and engineering support

For quick and easy specification, visit www.soundtube.com and use SoundTube’s proprietary specification software. For technical assistance, including detailed EASE™ plots, con- tact SoundTube Entertainment directly

at techinfo@soundtube.com or call us at 435-647-9555 or 800-647-8823.

Architectural Specifications

The loudspeaker shall consist of a 102 mm (4 in) polypropylene woofer and one 25 mm (1 in) convex aluminum tweeter with Ferro- Fluid cooling.

Performance specifications of a typical production unit shall be as follows: Useable frequency response shall extend to 73 Hz (-10 dB, full space, no external equalization). Measured sensitivity (2.83 Volt input, 1 meter) shall be at least 88.5 dB. The speaker shall have a nominal impedance of 4 Ohms and be available for 25, 70.7 & 100 Volt modes with voice coil/4 Ohm direct. The frequency dividing network shall have a crossover frequency of 2.27 kHz with slopes of 12 dB per octave (2nd order) for both low and high pass filters. Rated power capacity shall be at least 20 Watts continuous power (RMS) and conform to EIA-426-B testing. Maximum continuous output at 1 meter shall be 98 dB.

The low-frequency transducer shall have a polypropylene cone with butyl rubber sur- round. The high-frequency transducer shall

Polar Plots

125 Hz

250 Hz

500 Hz

1,000 Hz

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Technical data, EASEplots, SoundTubeSPECsoftware & product downloads available at www.soundtube.com

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Phase Technology SM400i Patented SoundTube Technologies, Technical Data Specification Tools, Technical assistance

SM400i specifications

The Phase Technology SM400i is a remarkable loudspeaker that combines cutting-edge technology with elegant design, making it an ideal choice for both audiophiles and casual listeners. This model is celebrated for its superb sound quality, comprehensive features, and versatile performance, which make it suitable for various audio setups, from home theaters to music listening spaces.

One of the standout features of the SM400i is its 4-inch polypropylene woofer. This driver is designed to provide deep, impactful bass while maintaining clarity in the mids. Coupled with a 1-inch silk dome tweeter, the SM400i delivers a balanced frequency response, ensuring that high frequencies are crisp and well-defined, catering to a wide range of musical genres. The tweeter's design also aids in reducing distortions, thereby enhancing overall sound fidelity.

The SM400i incorporates Phase Technology’s innovative SonicGuard technology, which protects the speaker components from power overload. This feature ensures that even during high-volume listening sessions, the integrity of the drivers is maintained, allowing for long-lasting performance without sacrificing sound quality. Additionally, the speaker's cabinet is constructed from high-density fiberboard, which minimizes resonance and provides a solid foundation for sound production.

Another significant characteristic of the SM400i is its versatile connectivity options. It includes a rear-firing bass port that enhances low-frequency response while allowing for flexible speaker placement. Whether you choose to wall-mount the speakers or position them on a stand, the SM400i ensures consistent audio performance.

The design of the SM400i is both modern and unobtrusive, featuring a sleek cabinet available in various finishes that allow it to blend seamlessly into any decor. The speaker is also equipped with removable grilles, providing an option for users who want to showcase the speaker's stylish drivers.

In conclusion, the Phase Technology SM400i is a thoughtfully engineered loudspeaker that offers a compelling mix of technology and aesthetic appeal. Its advanced driver setup, protective features, and elegant design make it a reliable choice for anyone seeking to enhance their audio experience. Whether used in a home theater or a dedicated listening room, the SM400i stands out as a high-quality option that can fulfill the needs of both casual listeners and serious audiophiles alike.