{"product_id":"156155","title":"PAT-20TB","description":"\u003cp\u003e20watt mobile public address (PA) amplifier designed specifically for two-way communication in motor vehicles and marine applications.Key FeaturesTwo-Way Talk-Back System: Automatically transforms connected external PA horns or standard speakers into remote microphones, allowing the operator to listen to responses from the field.Mobile Power Configuration: Operates on a standard DC 11V to 16V input rail, easily drawing power from standard vehicle electrical grids through an included cigarette lighter adapter plug.Dedicated Front Controls: Built with independent adjustment knobs to customize the master volume, tone contours, and auxiliary audio input feeds.Rugged Housing: Packed into a compact, low-profile metal chassis suitable for tight under-dash brackets or cabin placements.Technical SpecificationsParameterSpecification RatingPower Output12W RMS \/ 22W Max PeakOutput ImpedanceCompatible with 4 Ω to 8 Ω speaker loadsAudio Inputs1 x 1\/4\" Unbalanced Microphone (4kΩ) | 1 x 1\/4\" Auxiliary Input (50kΩ)Frequency Response50Hz ~ 20KHz (±3dB)Total Harmonic Distortion (THD)Less than 1% at rated output powerCurrent Consumption12V DC, 3.5A maximum drawPhysical Dimensions1¼\" (H) x 5⅛\" (W) x 7½\" (D)Total Weight1.1 lbs\u003c\/p\u003e","brand":"SPECO","offers":[{"title":"Default Title","offer_id":45794689810485,"sku":null,"price":139.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0219\/7936\/5440\/files\/AP1GczOH2jYf1iZVp7-KatdJNGKTu07fYnxwzMI0BuQHblWwSGMDK1JIVDb08k8b1JjZS_o0U5merWfuIiKocMUGbLhZPk6cBGCtJR9dyQZ_ORxkt74jcy0pKWyIFfNOEHX8BHWYZtGIuH2Fr5p0j3re4K1-GQ_w799-h799-s-no-gm_6c312871-00ef-4832-a1a2-03b86d56acbd.png?v=1784849851","url":"https:\/\/greenbrookonline.com\/products\/156155","provider":"Green Brook Online","version":"1.0","type":"link"}