Frequency response (at 2 meters):
23 to 324 Hz ±3.0 dB
Bass output (CEA-2010 standard)
● Ultra-low bass (20-31.5 Hz): 103.2 dB
● Low bass (40-63 Hz): 114.1 dB
I measured the frequency response of the SB13-Plus by placing a microphone 1 cm from the cone, and then measured CEA-2010 bass output at 1 meter. The frequency response measured nearly flat across the bass spectrum, with response down to 23 Hz and up to 324 Hz, well above the usual 80-Hz subwoofer crossover point.
CEA-2010 output is impressive; in fact, it’s well above 100 dB at all test frequencies except 20 Hz, where it drops to 98.3 dB. For a subwoofer of this size, that’s great.
To check the accuracy of the SB13-Plus’s Intelligent Function Controller, I set the parametric EQ for a cut of –6 dB at 50 Hz with a Q of 2.0. The difference in measured frequency response was exactly as expected, which is not usually the case with subwoofers; typically, the labels on the controls are a little off. This accurate calibration should make adjustment easier if you’re using measurement equipment to set the SB13-Plus’s controls. — B.B.
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