https://pmtronics.net/tags/vu/ Recent content in Vu on pmtronics // bench stories Hugo en-us Thu, 27 Aug 2026 20:40:00 +0000 https://pmtronics.net/posts/audio-units-converter/ Thu, 27 Aug 2026 20:40:00 +0000 https://pmtronics.net/posts/audio-units-converter/ <div style="display: flex; gap: 10px; margin-bottom: 26px;"> <div style="flex: 1.5; position: relative;"> <label for="inputValue" style="display: block; font-size: 0.85rem; margin-bottom: 4px;">Value:</label> <input type="text" inputmode="decimal" pattern="[+\-]?[0-9]*[.,]?[0-9]*" id="inputValue" value="0" oninput="convertAudio()" style="width: 100%; height: 40px; padding: 0 8px; border: 1px solid #444; border-radius: 4px; background: #2a2a2a; color: #fff; box-sizing: border-box; margin: 0; outline: none;"> <small id="inputValueErr" style="display: none; position: absolute; top: 100%; left: 0; margin-top: 4px; line-height: 1.1; white-space: nowrap; color: #f87171; font-size: 0.75rem;"></small> </div> <div style="flex: 1.5;"> <label for="inputUnit" style="display: block; font-size: 0.85rem; margin-bottom: 4px;">Unit:</label> <select id="inputUnit" onchange="convertAudio()" style="width: 100%; height: 40px; padding: 8px; border: 1px solid #444; border-radius: 4px; background: #2a2a2a; color: #fff; box-sizing: border-box;"> <option value="VU" selected>VU</option> <option value="dBu">dBu</option> <option value="dBV">dBV</option> <option value="dBFS">dBFS</option> <option value="VRMS">Volts (RMS)</option> <option value="Vpeak">Volts (Peak)</option> </select> </div> </div> <div style="display: flex; gap: 10px; margin-bottom: 28px;"> <div style="flex: 1;"> <label for="refLevel" style="display: block; font-size: 0.85rem; margin-bottom: 4px;">Analog Reference:</label> <select id="refLevel" onchange="convertAudio()" style="width: 100%; height: 40px; padding: 8px; border: 1px solid #444; border-radius: 4px; background: #2a2a2a; color: #fff; box-sizing: border-box;"> <option value="4" selected>Professional (+4 dBu / 0.775V ref)</option> <option value="-10">Consumer (-10 dBV / 1.0V ref)</option> </select> </div> <div style="flex: 1; position: relative;"> <label for="dbfsRef" style="display: block; font-size: 0.85rem; margin-bottom: 4px;">Converter Alignment (0 dBFS = dBu):</label> <input type="text" inputmode="decimal" pattern="[+\-]?[0-9]*[.,]?[0-9]*" id="dbfsRef" value="18" oninput="convertAudio()" style="width: 100%; height: 40px; padding: 0 8px; border: 1px solid #444; border-radius: 4px; background: #2a2a2a; color: #fff; box-sizing: border-box; margin: 0; outline: none;"> <small id="dbfsRefErr" style="display: none; position: absolute; top: 100%; left: 0; margin-top: 4px; line-height: 1.1; white-space: nowrap; color: #f87171; font-size: 0.75rem;"></small> </div> </div> <div style="background: #111; margin: 20px 0px; padding: 12px; border-radius: 6px; display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; text-align: center;"> <div> <span style="font-size: 0.75rem; color: #888; display: block;">VU</span> <strong class="text-primary-500" id="outVU" style="font-size: 1.1rem;">0.00</strong> </div> <div> <span style="font-size: 0.75rem; color: #888; display: block;">dBu</span> <strong class="text-primary-500" id="outDBu" style="font-size: 1.1rem;">+4.00</strong> </div> <div> <span style="font-size: 0.75rem; color: #888; display: block;">dBV</span> <strong class="text-primary-500" id="outDBv" style="font-size: 1.1rem;">+1.78</strong> </div> <div> <span style="font-size: 0.75rem; color: #888; display: block;">dBFS</span> <strong class="text-primary-500" id="outDBFS" style="font-size: 1.1rem;">-14.00</strong> </div> <div> <span style="font-size: 0.75rem; color: #888; display: block;">Volts (RMS)</span> <strong class="text-primary-500" id="outVRMS" style="font-size: 1.1rem;">1.228 V</strong> </div> <div> <span style="font-size: 0.75rem; color: #888; display: block;">Volts (Peak)</span> <strong class="text-primary-500" id="outVPeak" style="font-size: 1.1rem;">1.737 V</strong> </div> </div> <h2 id="why-a-unit-converter-for-the-bench" class="relative group">Why a Unit Converter (For the Bench) <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100"><a class="group-hover:text-primary-300 dark:group-hover:text-neutral-700" style="text-decoration-line: none !important;" href="#why-a-unit-converter-for-the-bench" aria-label="Anchor">#</a></span></h2><p>When you&rsquo;re knee-deep in audio hardware repair, bouncing back and forth between service manuals, multimeters, and oscilloscopes gets tedious. Logarithms kill your workflow. Boom! Use my trusty <strong>level converter</strong>.</p>