{"product_id":"rdl-fp-alc1","title":"RDL FP-ALC1 – Mono Automatic Level Control, Terminal Block","description":"\u003ch2\u003eWhat is the RDL FP-ALC1?\u003c\/h2\u003e\u003cp\u003eThe RDL FP-ALC1 is a single-channel automatic level control that delivers consistent mono audio levels from professional sources with varying output levels. Split-band AGC with self-adjusting attack and release keeps the processing transparent across a control range of more than 20 dB. Balanced input and output connect on a detachable terminal block in a compact RDL FLAT-PAK chassis.\u003c\/p\u003e\u003ch2\u003eHow does it work?\u003c\/h2\u003e\u003cp\u003e\u003cimg src=\"https:\/\/rdlnet.com\/wp-content\/uploads\/2024\/01\/fp-alc1.jpg\" alt=\"RDL FP-ALC1 mono automatic level control FLAT-PAK\" style=\"max-width:100%;height:auto\" loading=\"lazy\"\u003e\u003c\/p\u003e\u003cp\u003eThe FP-ALC1 accepts a +4 dBu nominal balanced bridging input and delivers a +4 dBu, 150 Ω balanced output; both may be connected unbalanced. Its automatic level range spans -16 to +14 dBu, so sources that vary widely come out at a steady level. A gate at -18 dBu stops the AGC from seeking level during pauses in the program. Setup uses a single adjustment: gain is set as high as possible with the loudest source without the INPUT OVERLOAD indicator flashing. Typical uses include telephone paging outputs, music-on-hold feeds, amplifier inputs in background or foreground systems, and intercom voice feeds. Power is 24 Vdc at 80 mA, ground-referenced, through the barrier block or a dc power jack on the end panel. The compact FLAT-PAK case can be rack mounted using RDL accessories such as the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-fp-hra\"\u003eRDL FP-HRA\u003c\/a\u003e or \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-fp-rra\"\u003eRDL FP-RRA rack adapter\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eWhat are the key features?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConsistent levels\u003c\/strong\u003e — Evens out variable professional sources to a steady +4 dBu output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSplit-band AGC\u003c\/strong\u003e — Keeps level control transparent to the listener.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-adjusting time constants\u003c\/strong\u003e — Attack and release times adapt automatically to the program.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle-control setup\u003c\/strong\u003e — One gain adjustment with an INPUT OVERLOAD indicator.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGated control\u003c\/strong\u003e — A gate prevents level seeking during silence.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFLAT-PAK convenience\u003c\/strong\u003e — Compact metal chassis with terminal block and dc jack power.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhere is it typically used?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCommercial meeting space\u003c\/li\u003e\n\u003cli\u003eConference room\u003c\/li\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eMulti-purpose 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\"\u003eFP-ALC1\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\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e10 kΩ balanced bridging (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\u003eInput Level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e+4 dBu (nominal)\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\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\u003eOutput Level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e+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\u003eAutomatic Level Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e-16 to +14 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\u003eGate Threshold\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e-18 dBu (20 Hz to 3 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\u003eFrequency Response (excluding AGC)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e20 Hz to 20 kHz (± 0.75 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 (excluding AGC)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e\u0026lt; 0.15% (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\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e\u0026lt; -90 dB (below +4 dBu 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\u003eHeadroom\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e\u0026gt; 18 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\u003eIndicator (1)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003eINPUT OVERLOAD\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 @ 80 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eOverall Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003eHeight: 1.42 in. 3.61 cm; Width: 3.25 in. 8.26 cm; Length: 5.75 in. 14.61 cm\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 level range does it correct?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eInputs from -16 to +14 dBu are held at a +4 dBu output.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eCan it be used with unbalanced equipment?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes. The balanced input and output may be connected unbalanced.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eHow is it set up?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eSet the gain as high as possible with the loudest source without the INPUT OVERLOAD indicator flashing. No other adjustment is needed.\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 80 mA, ground-referenced, through the barrier block or the dc power jack on the end panel.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eIs there a stereo version?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes. The RDL FP-ALC2 is the stereo version with RCA phono jacks for consumer-level sources.\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 paging and background music 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":68025770246380,"sku":"FP-ALC1","price":327.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/files\/fp-alc1.jpg?v=1793583773","url":"https:\/\/creationnetworks.net\/products\/rdl-fp-alc1","provider":"Creation Networks","version":"1.0","type":"link"}