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ZX8779
Impact Ball (For building acoustics)
The ZX8779 Impact Ball is a soft-impact sound source designed for low-frequency impact sound insulation testing, especially in lightweight floor/structure systems where a standard tapping machine may apply excessive force. By dropping the ball in free fall from 1.0 m, ZX8779 helps quantify heavy-but-soft impacts—such as barefoot walking or children jumping—and supports compliant measurements in line with ISO 16283-2 (field) and ISO 10140-5 (laboratory).
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The ZX8779 Impact Ball is a soft-impact sound source designed for low-frequency impact sound insulation testing, especially in lightweight floor/structure systems where a standard tapping machine may apply excessive force. By dropping the ball in free fall from 1.0 m, ZX8779 helps quantify heavy-but-soft impacts—such as barefoot walking or children jumping—and supports compliant measurements in line with ISO 16283-2 (field) and ISO 10140-5 (laboratory).
Features
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Standards compliant: Designed for impact sound measurements per ISO 16283-2 and ISO 10140-5.
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Low-frequency focus: Suitable for octave-band evaluation from 31.5 Hz to 500 Hz.
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Portable and practical: 2.5 kg mass with a compact form factor; carrying bag included.
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Easy maintenance: Rubber ball is simple to clean with water.
Impact Force Exposure Level (Octave-Band)
Octave-band center frequency (Hz)
Impact force exposure level (dB)
31.5
39.0 ± 1.0
63
31.0 ± 1.5
125
23.0 ± 1.5
250
17.0 ± 2.0
500
12.5 ± 2.0
