Loudspeaker Industry Sourcebook

LIS 2014

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2014 Loudspeaker Industry Sourcebook 46 VENDOR DIRECTORY T he 2013 Loudspeaker Industry Sourcebook (LIS) put the spotlight on acoustic test and measurement instrumentation. Our focus was on hardware- and software-integrated test solutions for measurement of speaker drivers and speaker systems rather than room tuning (i.e. one-third octave analyzers) or residential home auto EQ systems. For the 2014 LIS, we have expanded our coverage to include testing complete speakers and speaker parts. Now spiders, cones, magnets, and voice coil testers as well as power burn-in test systems are included. LIS Audiomatica, S.R.L. Via Giuseppe Manfredi 12, 50136 Firenze, Italy info@audiomatica.com (P) +39-055-65-99-036/(F) +39-055-65-03-772 www.audiomatica.com US Sales: E-Speakers.Com 5117 Tampa Ave., Tarzana, CA 91356 sales@e-speakers.com (P) 888-349-9419 www.e-speakers.com • Audiomatica's Clio acoustic analyzer is a cost- effective high-performance analyzer for speakers and microphones. The Clio 10 FW system includes the FW-01 interface as hardware and runs Clio 10 standard software or Clio 10 QC. Compatibility is ensured from Windows XP up to Windows 8.1 enabling gesture controls. • The companion hardware QCBox Model 5 Amplifier&Switching unit enhances and simplifies laboratory and production testing. Many measure - ments are possible with its wide bandwidth of more than 80 kHz. • Three measurement techniques are provided. The MLS & LogChirp analysis uses pseudo-random noise or logarithmic chirps as stimuli and sinusoidal sweeps up to 1/192 th of octave resolution with simultaneous harmonic and Rub & Buzz detection. The linearity and distortion function measures the nonlinear behavior of speakers or electronics. • Beyond measured result s, user s receive sophisticated post-processing tools for Thiele- Small (T-S) parameters with laser, waterfall plots to evaluate sound decay as 3-D or color graphs, directivity analysis for loudspeaker characterization as maps, circular or waterfall- like plots, and 3-D balloons. The analyzer provides automation for turntables (e.g., LinearX and Outline) and robots (ELF) as well as export to EASE. Audio Precision 83 Longfellow Rd., Worcester, MA 01602 Dan Foley danf@ap.com (P) 508-202-2551/(F) 503-469-0036 www.ap.com • Audio Precision (AP) has offered audio test equipment since 1984. It is best known for testing electronics from Blu-ray players, Bluetooth, amplifiers, digital formats, and more. Some of its instrumentation (e.g., the 2700) provides comprehensive loudspeaker measurements for lab and production line testing. The 2700 series offers a range of test signals (e.g., chirp, MLS, etc.) and synchronous averaging for accurate results in noisy production environments. Designed for audio engineers who need high performance, low distortion, and flexibility in their audio analyzers, it is not just limited to speaker testing. The 2700 also tests electronics. The 2700 series' typical total harmonic distortion (THD) is less than or equal to 115 dB at 2 VRMS. • The APx525 analyzer can also be used to make acoustic measurements. Its two analog and digital channels are suitable for measuring speakers Test and Measurement Instrumentation By Mike Klasco (Menlo Scientific, United States)

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