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High-quality polyester acoustic foam with high density (40 kg/m³ net nominal weight +/- 5 kg tolerance) and dense structure especially for the absorption of low frequencies
Main effective range: 80 to 500 Hz
Material: Polyester acoustic foam
Flame-retardant in accordance with FMVSS 302 Burning rate <100 mm/min
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F
Funzionano davvero! E sono anche belle.
FagiUolo 06.10.2020
Io le ho messe sopra delle bass trap angolari autocostruite in lana di roccia perché una porzione dello spigolo era rimasta scoperta e non so dirvi sotto, ma sopra ai 1000Hz si sentono davvero. Anche i miei amici scettici e non del settore si sono resi conto della differenza nelle prove di ascolto.
Ps. Usata al contrario, messa subito dietro al microfono quando si registra una voce, diventa un filtro per le riflessioni ingombrante ma davvero effettivo. Provare per credere.