{"product_id":"rdl-ru-sm16a","title":"RDL RU-SM16A – 2-Channel LED Audio Level Meter","description":"\u003ch2\u003eWhat is the RDL RU-SM16A?\u003c\/h2\u003e\u003cp\u003eThe RDL RU-SM16A is a two-channel audio level meter with 16-LED displays for precise metering in stereo or as two independent mono meters. Each input can be calibrated for consumer, professional, 8 ohm speaker or 25 V, 70 V and 100 V constant-voltage lines. Peak or average metering is selectable per channel, and the top three LEDs act as peak-hold indicators.\u003c\/p\u003e\u003ch2\u003eHow does it work?\u003c\/h2\u003e\u003cp\u003e\u003cimg src=\"https:\/\/rdlnet.com\/wp-content\/uploads\/2024\/01\/ru-sm16a.jpg\" alt=\"RDL RU-SM16A two channel audio level meter\" style=\"max-width:100%;height:auto\" loading=\"lazy\"\u003e\u003c\/p\u003e\u003cp\u003eThe RU-SM16A has two separate inputs on detachable terminal blocks, each with input impedance above 40 kΩ. Each input can be calibrated for unbalanced consumer, balanced professional, 8 ohm speaker or constant-voltage speaker lines. A rear-panel switch selects fixed calibration at +4 dBu, 25 V, 70 V or 100 V, or variable calibration set with front-panel multi-turn trimmers. Rear-panel switches set each meter for peak or average display. In mono systems, feeding one source to both meters with one set to peak and one to average shows both responses at once. The +10, +14 and +18 LEDs always operate in PEAK HOLD mode. Each channel has a label area to identify the source being metered. The module runs on 24 Vdc at 250 mA; RDL recommends the PS-24AS (USA) or \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ps-24ax\"\u003ePS-24AX\u003c\/a\u003e (international), and it rack mounts with the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ru-hra1\"\u003eRDL RU-HRA1\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eWhat are the key features?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e16-LED displays\u003c\/strong\u003e — Precise level indication from SIG to +18.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStereo or dual mono\u003c\/strong\u003e — Two independent meters or one stereo meter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide input compatibility\u003c\/strong\u003e — Line level, 8 ohm speaker or 25\/70\/100 V lines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixed or variable calibration\u003c\/strong\u003e — Preset levels or front-panel multi-turn trimmers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePeak or average\u003c\/strong\u003e — Selectable ballistics for each channel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePeak hold\u003c\/strong\u003e — +10, +14 and +18 LEDs hold peaks.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhere is it typically used?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBroadcast studio\u003c\/li\u003e\n\u003cli\u003eAuditorium\u003c\/li\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch\"\u003e\u003ctable style=\"border-collapse:collapse;width:100%;min-width:300px;table-layout:fixed\"\u003e\n\u003ccolgroup\u003e\n\u003ccol style=\"width:44%\"\u003e\n\u003ccol style=\"width:56%\"\u003e\n\u003c\/colgroup\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003eRU-SM16A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eInputs (2)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003eLine level or Amplified speaker level\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eInput Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e\u0026gt; 40 kΩ balanced or unbalanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003e0 dB Calibration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003eFixed or Variable (switch-selectable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eFixed Input Level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e+4 dBu (+4 switch settings, for 0 dB reading) 25 V* (25 V switch settings, for 0 dB reading) 70 V* (70 V switch settings, for 0 dB reading) 100 V* (100 V switch settings, for 0 dB reading)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eVariable Input Level Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e-24 dBu to +12 dBu (+4 switch settings, for 0 dB reading) 2 V to 90 V* (25 V switch settings, for 0 dB reading) 4 V to 90 V* (70 V switch settings, for 0 dB reading) 5 V to 100 V* (100 V switch settings, for 0 dB reading) *Constant-voltage or low-impedance (4 Ohms, 8 Ohms) amplifier output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eMetering Freq. Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e20 Hz to 20 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eIndicators\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003eSIG, -20, -15, -12, -9, -6, -3, -2, -1, 0, +1.5, +3, +6, +10, +14, +18 (+10, +14, +18 are PEAK HOLD indicators only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eMetering Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003eEach channel individually selectable PEAK or AVG (switch-selectable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eAmbient Operating Environment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e32° F to 131° F (0° C to 55° C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003ePower Requirement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003eGROUND-REFERENCED, 24 Vdc @ 250 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eWhat signals can it meter?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eLine-level audio, 8 ohm speaker lines, and 25 V, 70 V or 100 V constant-voltage speaker lines.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eCan each channel use a different mode?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes. Each channel can be set individually for peak or average metering.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eHow is it calibrated?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eUse fixed calibration at +4 dBu, 25 V, 70 V or 100 V, or variable calibration with front-panel trimmers.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eHow is it powered?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003e24 Vdc at 250 mA, ground-referenced. RDL recommends the PS-24AS (USA) or PS-24AX (international).\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eHow is it connected?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eAll connections use detachable terminal blocks.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eWhat warranty does it carry?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eThis product is covered by a 7-year RDL warranty. For warranty claims, RMAs or support, contact Creation Networks at (888) 230-3661 or sales@creationnetworks.net.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eCan Creation Networks help design the system?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes. Our team specifies, programs and installs audio monitoring systems for commercial projects nationwide. Call (888) 230-3661 for a quote or design review.\u003c\/p\u003e\u003c\/details\u003e","brand":"RDL","offers":[{"title":"Default Title","offer_id":68025792823532,"sku":"RU-SM16A","price":365.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/files\/ru-sm16a.jpg?v=1793583895","url":"https:\/\/creationnetworks.net\/products\/rdl-ru-sm16a","provider":"Creation Networks","version":"1.0","type":"link"}