{"product_id":"rdl-ru-vca2a","title":"RDL RU-VCA2A – 2-Channel Digitally Controlled Audio Attenuator","description":"\u003ch2\u003eWhat is the RDL RU-VCA2A?\u003c\/h2\u003e\u003cp\u003eThe RDL RU-VCA2A is a studio-quality dual-channel attenuator for local or remote level control of balanced or unbalanced line-level audio. Levels change in 0.5 dB steps across a 96 dB range using noiseless zero-crossing digital attenuators for click-free adjustment. It can be controlled from front-panel pushbuttons, RDL remote controls, momentary pulses, a 10 kΩ potentiometer or a 0 to 10 Vdc signal. It fits meeting rooms, multi-purpose rooms and paging systems where volume must be adjusted from one or more wall locations.\u003c\/p\u003e\u003ch2\u003eHow does it work?\u003c\/h2\u003e\u003cp\u003e\u003cimg src=\"https:\/\/rdlnet.com\/wp-content\/uploads\/2024\/01\/ru-vca2a.jpg\" alt=\"RDL RU-VCA2A digitally controlled two channel audio attenuator\" style=\"max-width:100%;height:auto\" loading=\"lazy\"\u003e\u003c\/p\u003e\u003cp\u003eA rear-panel switch selects MOM mode or 0 to 10 VDC mode at power-up. In MOM mode, holding an UP or DOWN button ramps the level, while a short press steps it by one increment, and UP and DOWN ramp times are adjustable on the front panel. Pressing both remote buttons or the front-panel GO TO PRESET button returns audio to a stored preset, and multiple remote locations are possible. A rear-panel switch sets power-up to either the preset level or the last level used. In 0 to 10 VDC mode, a remote 10 kΩ linear pot or a 0 to 10 Vdc signal sets the level from a single location. RAMP and EQ RAMP outputs drive the level display on RDL remotes and an RDL ST-LEQ1 loudness equalizer. EXTERNAL CONTROL DATA jacks let one master module control additional RU-VCA2A or RU-VCA6A modules set to slave mode. RDL remote controls such as the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-d-rlc10km\"\u003eRDL D-RLC10KM\u003c\/a\u003e or \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ds-rlc10k\"\u003eRDL DS-RLC10K\u003c\/a\u003e provide wall-mounted control. RDL recommends the PS-24AS power supply for the USA or the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ps-24ax\"\u003ePS-24AX\u003c\/a\u003e for international installations; the supply is not included.\u003c\/p\u003e\u003ch2\u003eWhat are the key features?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e96 dB range in 0.5 dB steps\u003c\/strong\u003e — Precise level tracking on each channel across the full range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero-crossing attenuators\u003c\/strong\u003e — Noiseless steps give click-free, long-term reliable adjustment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple control options\u003c\/strong\u003e — Pushbuttons, pulses, a 10 kΩ pot or 0 to 10 Vdc can set the level.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreset recall\u003c\/strong\u003e — A stored preset can be recalled from the front panel or the remote.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaster\/slave expansion\u003c\/strong\u003e — A data bus links multiple RU-VCA2A or RU-VCA6A modules.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMono or stereo\u003c\/strong\u003e — Two channels attenuate a stereo pair or two linked mono feeds.\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\u003eMulti-purpose room\u003c\/li\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eCommercial meeting space\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:40%\"\u003e\n\u003ccol style=\"width:60%\"\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-VCA2A\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\"\u003e\u0026gt;10 kΩ Balanced bridging, or Unbalanced, line 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\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e10 Hz to 50 kHz (± 0.5 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; 0.005% (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\u003eGain\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003eAdjustable from unity to \u0026lt;–96 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\u003eStep Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e0.5 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\u003eHeadroom\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e\u0026gt; 18 dB (above +4 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\u003eResidual Noise\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e\u0026lt; -90 dB (referred to +4 dBu at 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; 65 dB (50 to 150 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\u003eCrosstalk\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\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 style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eRamp Times\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\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 style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eIndicators (10)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\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 style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eAudio Outputs (2)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e150 Ω balanced (may be connected 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\u003eRamp Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\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 style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eEQ Ramp Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\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 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 (0°C) to 122°F (50°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\"\u003e24 Vdc @ 120 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\u003eCase Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\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\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eWhich remote controls work with the RU-VCA2A?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eRDL lists the D-RLC10, D-RLC10K, D-RLC10KM, D-RLC10M, DS-RLC10K and DS-RLC10KM.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eCan it be controlled from more than one location?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes, in MOM mode multiple remote control locations are possible. In 0 to 10 VDC mode a single remote 10 kΩ pot location is used.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eCan several modules track together?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes. One module set as MASTER can control additional RU-VCA2A or RU-VCA6A modules set to SLAVE through the EXTERNAL CONTROL DATA jacks.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eWhat power does it need?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003e24 Vdc at 120 mA, ground-referenced. RDL recommends the PS-24AS power supply for the USA or the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ps-24ax\"\u003ePS-24AX\u003c\/a\u003e for international installations; the supply is not included.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eHow is it mounted?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eRDL lists RACK-UP mounting accessories including the RU-RA3R, \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ru-hra1\"\u003eRU-HRA1\u003c\/a\u003e, \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ru-sma1\"\u003eRU-SMA1\u003c\/a\u003e, \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ru-br1\"\u003eRU-BR1\u003c\/a\u003e, \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-rc-1ur\"\u003eRC-1UR\u003c\/a\u003e, UC-1R, UC-2R and WDG1R, plus the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-dra-35r\"\u003eDRA-35R\u003c\/a\u003e DIN rail adapter.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eWhat warranty does the RU-VCA2A 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 integrate the RU-VCA2A?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes. Creation Networks supports system design, equipment selection and installation planning for RDL products nationwide. Call (888) 230-3661 for a quote or technical help.\u003c\/p\u003e\u003c\/details\u003e","brand":"RDL","offers":[{"title":"Default Title","offer_id":68025793216748,"sku":"RU-VCA2A","price":463.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/files\/ru-vca2a.jpg?v=1793583897","url":"https:\/\/creationnetworks.net\/products\/rdl-ru-vca2a","provider":"Creation Networks","version":"1.0","type":"link"}