Subject: [AUDITORY] Tweeters for noise trauma From: =?UTF-8?Q?Boris_Gour=c3=a9vitch?= <boris@xxxxxxxx> Date: Thu, 11 Feb 2021 11:12:19 +0100Dear auditory list, I was looking for a speaker (probably a tweeter) that would reach 120 to=20 maybe 130 dB SPL in a high frequency range (for mice). I am a bit puzzled with the many papers inducing noise trauma (i.e.=20 Warren, Fenton et al, J Neuroscience 2020; Amanipour et al, 2018; Chen,=20 Sheppar and Salvi 2016; Novak, Zelenka et al, 2016) which actually used=20 pretty common tweeters to do that. Technical specifications for these=20 tweeters do not really indicate that they could handle such high SPL=20 (and therefore such high voltage). How did they determine that ? How can=20 we know then ? Only by sensitivity measure adjusted for the watt power=20 of the speaker ? Let's take an example: in the Warren et al above cited, the Visaton=20 speaker from RadioSpare is used to deliver 3kHz at 126 dB SPL. The=20 technical specifications=20 (https://docs.rs-online.com/170c/0900766b802e5b23.pdf) indicate 30W max=20 and a sensitivity of 86 dB. Thus, it seems that this speaker could not=20 deliver above 101 dB SPL. How did the authors do to avoid damaging their=20 speaker ? Same question with other speakers as well. I'm not an=20 acoustician/electronician and I am probably missing something here. Many thanks for your help. Also, many of the tweeters from the papers=20 above are discontinued so if you know a pretty robust one that you are=20 safely using at high SPLs, please do not hesitate to tell me. Best regards Boris --=20 Dr Boris Gour=C3=A9vitch CNRS Researcher Institut de l'Audition UMR1120 Inserm, Institut Pasteur 63 rue de Charenton 75012 Paris, France Tel: (+33) 1 76 53 50 41 Personal Web page: http://www.pi314.net/ --=20 L'absence de virus dans ce courrier =C3=A9lectronique a =C3=A9t=C3=A9 v=C3= =A9rifi=C3=A9e par le logiciel antivirus Avast. https://www.avast.com/antivirus