{"product_id":"rdl-ru-vca6a","title":"RDL RU-VCA6A – 6-Channel Digitally Controlled Audio Attenuator","description":"\u003ch2\u003eWhat is the RDL RU-VCA6A?\u003c\/h2\u003e\u003cp\u003eThe RDL RU-VCA6A is a six-channel, studio-quality digitally controlled attenuator for local or remote level control of balanced or unbalanced line-level audio. It handles 5.1 surround or six individual channels with precise tracking across all channels. Multiple remote locations and multi-module data bus control make it suited to theaters, boardrooms and commercial AV systems.\u003c\/p\u003e\u003ch2\u003eHow does it work?\u003c\/h2\u003e\u003cp\u003e\u003cimg src=\"https:\/\/rdlnet.com\/wp-content\/uploads\/2024\/01\/ru-vca6a.jpg\" alt=\"RDL RU-VCA6A six-channel audio attenuator\" style=\"max-width:100%;height:auto\" loading=\"lazy\"\u003e\u003c\/p\u003e\u003cp\u003eAudio levels are adjusted over a 96 dB range in 0.5 dB steps using noiseless zero-crossing digital attenuators for click-free, long-term service. Rear-panel inputs and outputs can each be wired balanced or unbalanced. A rear-panel switch sets the operating mode. In momentary mode, front-panel or remote pushbuttons ramp the level up or down, a short pulse moves one step and adjustable ramp rates are set on the front panel. A preset level can be stored and recalled with the front-panel GO TO PRESET button or by pressing remote UP and DOWN together. Other control options include rotary-encoder pulses, 0 to 10 Vdc or a 10 kΩ potentiometer. A switch selects whether the unit powers up to the preset or the last level used. A data bus and MASTER\/SLAVE mode allow several modules to track together for larger systems. The module runs from 24 Vdc; RDL recommends its PS-24AS (USA) or \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ps-24ax\"\u003ePS-24AX\u003c\/a\u003e (international) 24 Vdc supply. It mounts with RDL RACK-UP accessories such as the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ru-hra1\"\u003eRU-HRA1 10.4-inch rack mount\u003c\/a\u003e, \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-rc-1ur\"\u003eRC-1UR 19-inch universal rack chassis\u003c\/a\u003e, \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ru-sma1\"\u003eRU-SMA1 surface mounting plate\u003c\/a\u003e and \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ru-br1\"\u003eRU-BR1 under-surface bracket\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eWhat are the key features?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix channels\u003c\/strong\u003e — Controls 5.1 surround or six independent line-level channels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e96 dB range in 0.5 dB steps\u003c\/strong\u003e — Noiseless zero-crossing attenuators deliver click-free adjustment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple control methods\u003c\/strong\u003e — Pushbuttons, rotary-encoder pulses, 0 to 10 Vdc or a 10 kΩ potentiometer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreset recall\u003c\/strong\u003e — Store and recall a preset level, with power-up to preset or last level.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaster\/slave expansion\u003c\/strong\u003e — A data bus links multiple modules for tracking control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced or unbalanced I\/O\u003c\/strong\u003e — Inputs and outputs can each be wired balanced or unbalanced.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhere is it typically used?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBoardrooms and conference rooms\u003c\/li\u003e\n\u003cli\u003eAuditoriums and screening rooms\u003c\/li\u003e\n\u003cli\u003eHouses of worship\u003c\/li\u003e\n\u003cli\u003eTraining rooms\u003c\/li\u003e\n\u003cli\u003eCommercial sound systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch\"\u003e\u003ctable border=\"1\" cellpadding=\"6\" style=\"border-collapse:collapse;width:100%;min-width:300px;table-layout:fixed;border-color:#ddd\"\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 valign=\"top\"\u003e\u003cstrong\u003eInputs (6)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;10 kΩ Balanced bridging, or Unbalanced, line level\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 Hz to 50 kHz (± 0.5 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eTHD+N\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.005% (20 Hz to 20 kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eGain\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAdjustable from unity to \u0026lt;–96 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eStep Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.5 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eHeadroom\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 18 dB (above +4 dBu)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eResidual Noise\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; -90 dB (referred to +4 dBu at unity gain)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eCMRR\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 65 dB (50 to 150 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eCrosstalk\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;-95 dB (1 kHz, typ.); \u0026lt; -85 dB (20 Hz to 5 kHz); \u0026lt; -75 dB (5 kHz to 20 kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eRamp Times\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.5 second delay; then: 3 seconds to 10 seconds (UP and DOWN times individually adjustable on front panel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eIndicators (10)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFront-panel LEDs indicating relative audio level (8), MAX condition (green), MIN condition (red)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eAudio Outputs (6)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e150 Ω balanced (may be connected unbalanced)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eRamp Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 10 Vdc, (Ground-referenced) Note: Not intended to drive additional VCA 0-10V inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eEQ Ramp Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 10 Vdc, (Ground-referenced) Note: dc taper intended only to drive RDL Loudness EQ (ST-LEQ1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eAmbient Operating Environment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e32° F to 122° F (0° C to 50° C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003ePower Requirement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24 Vdc @ 200 mA, Ground-referenced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eCase Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5.75\" (14.6 cm) W x 1.65\" (4.18 cm) H x 3.54\" (9.0 cm) D;3.9\" (9.9 cm) D with connectors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eShipping Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.515 lbs.\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\u003eCan the RU-VCA6A control 5.1 surround audio?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes. Its six channels track together for surround sound or can serve six individual analog channels.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eWhat remote controls can I use?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eMomentary pushbuttons, rotary encoders, 0 to 10 Vdc control or a 10 kΩ potentiometer, including various RDL remote controls.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eCan multiple units track together?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes. The data bus and MASTER\/SLAVE mode allow multiple modules to be adjusted together.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eWhat power supply is required?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003e24 Vdc at 200 mA, ground-referenced. The supply is not included; RDL recommends the PS-24AS (USA) or \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ps-24ax\"\u003ePS-24AX\u003c\/a\u003e (international).\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eWhat warranty does the RU-VCA6A 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 and commission the system?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes. Our team handles networked audio design, equipment selection, installation and commissioning for commercial projects nationwide. Call (888) 230-3661 to discuss your project.\u003c\/p\u003e\u003c\/details\u003e","brand":"RDL","offers":[{"title":"Default Title","offer_id":68025793249516,"sku":"RU-VCA6A","price":746.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/files\/ru-vca6a.jpg?v=1793583897","url":"https:\/\/creationnetworks.net\/products\/rdl-ru-vca6a","provider":"Creation Networks","version":"1.0","type":"link"}