{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.loudspeaker","code":"thing-q570","url":"https://ver.cy/models/thing/q570/","name":"loudspeaker","alternateNames":["public address loudspeaker","Kano Speaker Kit","Poetry Jukebox","iPod Hi-Fi","guitar amplifier loudspeaker","ASW","mechanical siren","Creoqode AUDX","ground speaker","motor vehicle speaker","SRS-XV800","Dome loudspeaker"],"kind":"thing","status":"published","version":"0.2.0-wave.4","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.OBJ"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"An electroacoustic transducer that converts an electrical audio signal into sound, typically a cone driven by a voice coil in a magnetic field mounted in an enclosure, in forms from hi-fi and studio speakers, public address loudspeakers and guitar amplifier speakers to consumer products such as the iPod Hi-Fi, educational kits such as the Kano Speaker Kit, art installations such as the Poetry Jukebox and active subwoofers; loudspeakers are characterised by frequency response, sensitivity, impedance and directivity.","purpose":"Let an agent explain loudspeakers and how they work, relay driver types, enclosures, specifications and history from audio engineering sources, describe uses from hi-fi to public address, and distinguish loudspeakers from headphones, amplifiers, microphones and complete audio products.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Electroacoustic transducer","Driver and enclosure","Many formats","Measured performance"],"structure":{"bundles":[{"id":"understand","name":"Understand","description":"What a loudspeaker is.","layers":[{"id":"definition","name":"Definition","description":"Definition and working.","findings":[{"id":"definition-finding","name":"Definition","description":"Definition.","questions":[{"text":"What is a loudspeaker, how does a driver produce sound, and how does it differ from headphones, amplifiers and microphones?","kind":"definition"},{"text":"Is the question about the device, a type, a product or a sound system?","kind":"boundary"}]}]},{"id":"types","name":"Types","description":"Types.","findings":[{"id":"types-finding","name":"Types","description":"Types.","questions":[{"text":"What are dynamic, electrostatic and horn loudspeakers, and what are PA, guitar and consumer speakers?","kind":"definition"},{"text":"Which entry fits the specific type?","kind":"action"}]}]}]},{"id":"engineering","name":"Engineering","description":"Engineering.","layers":[{"id":"specs","name":"Specifications","description":"Specifications.","findings":[{"id":"specs-finding","name":"Specifications","description":"Specifications.","questions":[{"text":"How are frequency response, sensitivity, impedance and directivity measured and read?","kind":"measurement"},{"text":"Which references are standard?","kind":"provenance"}]}]},{"id":"enclosures","name":"Enclosures","description":"Enclosures and crossovers.","findings":[{"id":"enclosures-finding","name":"Enclosures","description":"Enclosures.","questions":[{"text":"How do enclosures, ports and crossovers shape performance?","kind":"provenance"},{"text":"Which sources are cited?","kind":"provenance"}]}]}]},{"id":"use","name":"Use","description":"Uses.","layers":[{"id":"home","name":"Home","description":"Home and studio.","findings":[{"id":"home-finding","name":"Home","description":"Home.","questions":[{"text":"How are speakers chosen and placed for hi-fi, home cinema and studios?","kind":"action"},{"text":"Which entry fits high fidelity?","kind":"action"}]}]},{"id":"public","name":"Public","description":"Public address and stage.","findings":[{"id":"public-finding","name":"Public","description":"Public.","questions":[{"text":"How are PA systems, line arrays and instrument speakers used?","kind":"provenance"},{"text":"Which entry fits public address system?","kind":"action"}]}]}]},{"id":"context","name":"Context","description":"History and products.","layers":[{"id":"history","name":"History","description":"History.","findings":[{"id":"history-finding","name":"History","description":"History.","questions":[{"text":"How did loudspeakers develop from early horns to moving-coil and modern designs?","kind":"provenance"},{"text":"Which entry fits the history of sound recording?","kind":"action"}]}]},{"id":"products","name":"Products","description":"Named products.","findings":[{"id":"products-finding","name":"Products","description":"Products.","questions":[{"text":"What were the iPod Hi-Fi, the Kano Speaker Kit and the Poetry Jukebox?","kind":"provenance"},{"text":"Which entry fits the specific product?","kind":"action"}]}]}]}]},"agentConduct":{"may":["Set up, test and adjust loudspeakers the agent is authorized to operate.","Explain driver types, enclosures and their use in hi-fi, studio and public address systems.","Monitor sound levels and report when they exceed safe or permitted limits."],"mustNot":["Play sound at levels that can damage hearing.","Use public address speakers to broadcast false alarms or messages without authority.","Run loud sound in residential areas at night in breach of noise rules.","Use speakers to harass or disturb people or animals."],"requiresHuman":["Broadcasting emergency messages over a public address system."]},"ethics":{"considerations":["Loud sound causes permanent hearing loss, often in young people.","Public address systems carry safety messages that must be trusted."],"affectedParties":["Listeners","Neighbours","Event workers"]},"owners":{"steward":"The owner or operator of the system.","roles":[],"masterSystems":[]},"relations":[{"target":"Q1718024","type":"parent","note":"registry parent class"},{"target":"Q267228","type":"parent","note":"registry parent class"},{"target":"Q3749263","type":"parent","note":"registry parent class"},{"target":"sound transducer","type":"related","note":"in registry terms"},{"target":"sound generator","type":"related","note":"in registry terms"},{"target":"electrical device","type":"related","note":"in registry terms"},{"target":"audio power amplifier","type":"related","note":"in a sound system"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.loudspeaker","Wikidata: Q570 (https://www.wikidata.org/wiki/Q570)"]},"properties":{"applicability":"required","items":["moving-coil driver patented: 1925 year - Rice and Kellogg","typical impedance: 4 or 8 ohms","typical sensitivity: about 85-95 dB at 1 W 1 m"]},"recognition":{"applicability":"required","items":["Electrical signal to sound transducer","Hi-fi speakers, PA loudspeakers, guitar amplifier speakers, iPod Hi-Fi, Kano Speaker Kit, Poetry Jukebox, subwoofers","Headphones sit on the ears; amplifiers drive speakers; microphones convert sound to signal","A box or cabinet with one or more cone or dome drivers."]},"capabilities":{"applicability":"required","items":["explain working and types","relay specifications and history","describe uses","distinguish related devices"]},"hazards":{"applicability":"required","items":["Hearing damage from high levels","Confusing speakers with complete systems","Registry aliases naming products and installations"]},"interfaces":{"applicability":"required","items":["IEC 60268 sound system equipment standards","Electrical safety and EMC regulations","Noise regulations for public address"]},"context":{"applicability":"required","items":["Reproducing sound from electrical signals.","dynamic cone and dome drivers","electrostatic, planar and horn loudspeakers","hi-fi and studio monitors","public address and line array loudspeakers","guitar and instrument speakers","active and wireless consumer speakers such as the iPod Hi-Fi","kits and installations such as the Kano Speaker Kit and Poetry Jukebox"]}},"sources":[{"title":"Wikidata item Q570: loudspeaker","url":"https://www.wikidata.org/wiki/Q570","note":"identity and sense of the item"},{"title":"Wikipedia: Loudspeaker","url":"https://en.wikipedia.org/wiki/Loudspeaker","note":"general description of the item"}],"openQuestions":["Should subwoofer, PA loudspeaker and guitar speaker be separate primary entries?","How should audio engineering sources be linked?","The registry entry has merged aliases naming products, a kit and an art installation; should they be split off?"],"resources":{"spec":"/models/things/publications/thing-q570/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q570/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-13T13:33:53Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-06T19:52:01+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}