{"product_id":"rdl-ru-asx4dr","title":"RDL RU-ASX4DR – 4x1 Stereo Audio Selector with VCA","description":"\u003ch2\u003eWhat is the RDL RU-ASX4DR?\u003c\/h2\u003e\u003cp\u003eThe RDL RU-ASX4DR is a remote-controlled 4x1 stereo audio selector with an internal stereo VCA for output level control. It switches four balanced or unbalanced stereo line-level sources to one stereo output using silent solid-state switching. Source selection and level can be controlled from one or more locations using RDL remote controls or OEM equipment. It is a simple source and volume control solution for conference rooms, training rooms and multi-purpose spaces.\u003c\/p\u003e\u003ch2\u003eHow does it work?\u003c\/h2\u003e\u003cp\u003e\u003cimg src=\"https:\/\/rdlnet.com\/wp-content\/uploads\/2024\/01\/ru-asx4dr.jpg\" alt=\"RDL RU-ASX4DR 4x1 Stereo Audio Selector with VCA\" style=\"max-width:100%;height:auto\" loading=\"lazy\"\u003e\u003c\/p\u003e\u003cp\u003eEach of the four stereo inputs accepts a balanced or unbalanced signal and has a rear-panel screwdriver-adjustable gain trimmer. Input levels from -15 dBV to +8 dBu can be set to the proper operating level using a stereo dual-LED VU meter, with a maximum input level of +25 dBu. Identical dual-LED VU meters on the front and rear panels are calibrated to read +4 dBu at the balanced output. Output level is set by a remote 10 kΩ linear pot or 0 to 10 Vdc, with a 96 dB attenuation range in 0.5 dB steps using noiseless zero-crossing digital attenuators. Sources are selected with a sequential control such as the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-d-rcs4\"\u003eRDL D-RCS4\u003c\/a\u003e, a momentary control such as the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-d-rc4m\"\u003eRDL D-RC4M\u003c\/a\u003e, or an open-collector closure to ground. Level control is compatible with RDL rotary controls including the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-d-rlc10\"\u003eRDL D-RLC10\u003c\/a\u003e, \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-d-rlc10m\"\u003eRDL D-RLC10M\u003c\/a\u003e and \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-d-rlc3\"\u003eRDL D-RLC3\u003c\/a\u003e. When a source is selected, a 25 mA open-collector output is available to control other equipment, and a front-panel LED shows the selected source. Rear-panel DIP switches set the VCA activity LED behavior and the remote control mode. Power is 24 Vdc at 175 mA on a detachable terminal block, with RDL recommending the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ps-24ax\"\u003ePS-24AX\u003c\/a\u003e supply; rack-mount it with the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ru-hra1\"\u003eRU-HRA1\u003c\/a\u003e or \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-rc-1ur\"\u003eRC-1UR universal rack chassis\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eWhat are the key features?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4 stereo inputs to 1 output\u003c\/strong\u003e — Switches four stereo line-level sources to one stereo output using solid-state switching.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote VCA level control\u003c\/strong\u003e — Adjusts output level by 10 kΩ pot or 0 to 10 Vdc over a 96 dB range in 0.5 dB steps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple control locations\u003c\/strong\u003e — Source selection and level can be operated from single or multiple remote locations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGain trim per source\u003c\/strong\u003e — Rear-panel trimmers and dual-LED VU meters set each input to the proper operating level.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen-collector status output\u003c\/strong\u003e — Provides a 25 mA open-collector output for the selected input to control other equipment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced or unbalanced I\/O\u003c\/strong\u003e — Inputs and outputs connect balanced or unbalanced on detachable terminal blocks.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhere is it typically used?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eConference room\u003c\/li\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003cli\u003eBoardroom\u003c\/li\u003e\n\u003cli\u003eHouse of worship\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-ASX4DR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eAudio inputs (4)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003eStereo, line level on detachable terminal block\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 level (for +4 dBu output)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e-15 dBV to +8 dBu, adjustable on rear-panel trimmers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eMaximum input level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e+25 dBu\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; 20 kΩ balanced, \u0026gt; 10 kΩ 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\u003eAudio output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003eStereo, line level on detachable terminal block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eOutput level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e+4 dBu balanced; unbalanced output 6 dB below balanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eOutput impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e150 Ω balanced, 75 Ω 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\u003eVCA control input\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e0 to 10 Vdc or 0 to 10 kΩ linear potentiometer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eFrequency response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e10 Hz to 20 kHz (±0.2 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eTHD+N\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e\u0026lt; 0.01% (20 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\u003eNoise below +4 dBu\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e\u0026lt; -85 dB (any input selected); \u0026lt; -95 dB (no input selected)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eOff attenuation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e\u0026gt; 85 dB (1 kHz), \u0026gt; 70 dB (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\u003eCrosstalk\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e\u0026lt; -80 dB (1 kHz); \u0026lt; -60 dB (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\u003eHeadroom above +4 dBu\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e\u0026gt; 18 dB (unity gain)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eCMRR\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e\u0026gt; 60 dB (50 Hz to 120 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eControl inputs (6)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003eSource selection (4), SEL, VCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eControl outputs (5)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e25 mA, open-collector to ground\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eRDL remote compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003eD-RC4M, D-RCS4 (source); D-RLC10, D-RLC10M, D-RLC10K, D-RLC10KM, D-RLC3 (VCA)\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\"\u003e24 Vdc @ 175 mA, ground-referenced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eOperating environment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e0° 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\u003eShipping weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e1.53 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eCompliance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003eTAA compliant (per RDL)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e7-year RDL warranty\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\u003eHow are sources selected?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eUse a sequential control such as the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-d-rcs4\"\u003eRDL D-RCS4\u003c\/a\u003e, a momentary control such as the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-d-rc4m\"\u003eRDL D-RC4M\u003c\/a\u003e, or an external open-collector momentary closure to ground.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eHow is volume controlled?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eA remote 10 kΩ linear pot or 0 to 10 Vdc controls the internal stereo VCA in 0.5 dB steps over a 96 dB range.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eCan it be controlled from more than one room location?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes. RDL states the RU-ASX4DR can be remote controlled from a single location or from multiple locations.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eDoes it accept unbalanced consumer sources?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes. Each input accepts balanced or unbalanced signals, with trim from -15 dBV to +8 dBu.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eHow is it powered and mounted?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eIt requires 24 Vdc at 175 mA. RDL recommends the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ps-24ax\"\u003ePS-24AX\u003c\/a\u003e, and the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ru-hra1\"\u003eRDL RU-HRA1\u003c\/a\u003e or \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-rc-1ur\"\u003eRDL RC-1UR\u003c\/a\u003e rack-mount it.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eWhat warranty applies?\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 program the control system?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes. Creation Networks designs, programs and commissions commercial AV systems nationwide. Call (888) 230-3661 for help with system design, quoting or installation.\u003c\/p\u003e\u003c\/details\u003e","brand":"RDL","offers":[{"title":"Default Title","offer_id":68025739837676,"sku":"RU-ASX4DR","price":614.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/files\/ru-asx4dr.jpg?v=1793583007","url":"https:\/\/creationnetworks.net\/products\/rdl-ru-asx4dr","provider":"Creation Networks","version":"1.0","type":"link"}