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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link=blue vlink=purple style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal><span style='font-family:"Segoe UI",sans-serif;color:#1F497D;mso-fareast-language:EN-US'>The Sifams we use are a taut band design – a rectangular wire takes the current in and out of the coil, suspended in a magnet.<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Segoe UI",sans-serif;color:#1F497D;mso-fareast-language:EN-US'>The torsion on the wire counters the electric force to make the meter stop at the desired level.<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Segoe UI",sans-serif;color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Segoe UI",sans-serif;color:#1F497D;mso-fareast-language:EN-US'>When you overload it, the meter needle stops the coil from rotating anymore, and as you pass more current through it, the coil will start to move away from the centre of the magnet, stretching the taut wire, and potentially grounding the coil on the magnet.<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Segoe UI",sans-serif;color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Segoe UI",sans-serif;color:#1F497D;mso-fareast-language:EN-US'>My guess is you can put a lot more than +6 into it without damage for a period of time, a bit like heatsinking on a semi, high overload for a short time, low overload for a long time.<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Segoe UI",sans-serif;color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Segoe UI",sans-serif;color:#1F497D;mso-fareast-language:EN-US'>I’m guessing + 12VU should be OK for a longish period ( 4 x voltage, 16 x power), but YMMV<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Segoe UI",sans-serif;color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:10.0pt;font-family:"Segoe UI",sans-serif;color:#1F497D'>Kind Regards<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span style='font-size:10.0pt;font-family:"Segoe UI",sans-serif;color:#1F497D'>Crispin Herrod-Taylor<br></span></b><b><span style='font-size:10.0pt;font-family:"Segoe UI",sans-serif;color:black'>Managing Director, Crookwood</span></b><b><span style='font-size:10.0pt;font-family:"Segoe UI",sans-serif;color:blue'><br></span></b><span style='font-size:10.0pt;font-family:"Segoe UI",sans-serif;color:#1F497D'><a href="http://www.crookwood.com/" target="_blank"><span style='color:purple'>www.crookwood.com</span></a> </span><span style='font-family:"Segoe UI",sans-serif;color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><i><span style='font-size:10.0pt;font-family:"Segoe UI",sans-serif;color:#1F497D'>Tel: +44 (0)1672 811 649<br>Mobile:+44(0)7910 637 634</span></i><span style='font-family:"Segoe UI",sans-serif;color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><i><span style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D'> </span></i><span style='color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><i><span style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D'>Sign up for our great newsletter <a href="http://crookwood.com/newsletter/" target="_blank">here</a>!</span></i></b><b><span style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D'> and keep up to date with the audio world</span></b><span style='color:#1F497D'><o:p></o:p></span></p></div><p class=MsoNormal><span style='font-family:"Segoe UI",sans-serif;color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US>From:</span></b><span lang=EN-US> ProAudio <proaudio-bounces@bach.pgm.com> <b>On Behalf Of </b>Bob Katz via ProAudio<br><b>Sent:</b> 28 January 2021 17:27<br><b>To:</b> proaudio@bach.pgm.com<br><b>Subject:</b> [ProAudio] VU meter permitted overdrive with a sine wave...<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p>This list has been remarkably silent, but I am very grateful that it's around when I have a question to ask AUDIO EXPERTS.<o:p></o:p></p><p><o:p> </o:p></p><p>Who here knows the acceptable rating of a standard mechanical VU meter above 0 VU with a sine wave? If I recall correctly, they are designed to accept as high as +6 VU or even higher. For example, when doing testing of a tape recorder for headroom. It's still ideal to shut off the meter, but in some cases that's not possible.<o:p></o:p></p><p><o:p> </o:p></p><p><o:p> </o:p></p><p>Thanks and happy New Year!<o:p></o:p></p><p><o:p> </o:p></p><p><o:p> </o:p></p><p>Bob<o:p></o:p></p><div><p class=MsoNormal>-- <o:p></o:p></p><pre><span style='font-family:"3D"Courier"",serif'><o:p> </o:p></span></pre><pre><span style='font-family:"3D"Courier"",serif'><o:p> </o:p></span></pre><pre><span style='font-family:"3D"Courier"",serif'>If you want good sound on your album, come to<o:p></o:p></span></pre><pre><span style='font-family:"3D"Courier"",serif'>Bob Katz 407-831-0233 DIGITAL DOMAIN MASTERING STUDIO<o:p></o:p></span></pre><pre><span style='font-family:"3D"Courier"",serif'>Author: <b>Mastering Audio</b><o:p></o:p></span></pre><pre><span style='font-family:"3D"Courier"",serif'><a href="https://www.digido.com/">Digital Domain Website</a><o:p></o:p></span></pre><pre><span style='font-family:"3D"Courier"",serif'><o:p> </o:p></span></pre><pre><span style='font-family:"3D"Courier"",serif'>No trees were killed in the sending of this message. However a large number<o:p></o:p></span></pre><pre><span style='font-family:"3D"Courier"",serif'>of electrons were terribly inconvenienced.</span><o:p></o:p></pre><pre> <o:p></o:p></pre></div></div></body></html>