{"product_id":"hella-marine-dual-tone-disc-horn-set-12v-118-db","title":"Hella Marine Dual Tone Disc Horn Set | 12V 118 dB","description":"\u003cp class=\"nvn-hero\"\u003eThe Hella Marine dual tone disc horn set gives you a real, attention-getting blast on the water. One horn plays a 280 Hz low tone, the other a 350 Hz high tone, and together they hit 118 decibels. Runs on 12 volts. It's a clean upgrade for any smaller powerboat, sailboat, or tender that needs a proper sound signal.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eEvery boat needs a horn that people can actually hear. The Hella Marine dual tone disc horn set delivers exactly that. You get two horns in the set, one tuned to a 280 Hz low tone and one tuned to a 350 Hz high tone, and when they sound together they blend into that rich, layered note that carries across a busy harbor. Combined output is rated at 118 decibels. That's plenty of punch for the kind of sound signal you're expected to make under the rules of the road.\u003c\/p\u003e\n\u003cp\u003eThese are disc horns, not trumpets. The disc design keeps each unit compact and flat, roughly 4.8 inches round, so they tuck into an engine bay, under a console, or behind a bow rail without eating up the real estate a trumpet horn demands. On a smaller boat where every inch counts, that matters. And because there's no long trumpet throat to trap water, they shed spray and drain well when they're mounted at a sensible angle.\u003c\/p\u003e\n\u003cp\u003eWhy two tones instead of one? A single-note horn can get lost in wind and engine noise. Stacking a low tone under a high tone gives you a fuller sound that's easier for another skipper to pick out and easier to locate directionally. It's the same reason big ships run multiple tones. You're not just making noise, you're making a signal that reads as a boat.\u003c\/p\u003e\n\u003cp\u003eEach set runs on a 12 volt system and the pair pulls 66 watts, so figure on roughly five and a half amps when both horns fire. That's more than a lot of dash switches and thin signal wire want to carry directly, so we always wire marine horns through a relay. Run heavy power straight from the battery through a fuse to the relay, and let the helm button just trigger the relay coil. It keeps the switch cool, the wire sized right, and the horn loud. If you're not comfortable sizing a relay and fuse, we can walk you through it.\u003c\/p\u003e\n\u003cp\u003eMount both horns where the sound can get out, not buried deep in a locker facing a bulkhead. Point the openings slightly down so water runs out instead of pooling. If you space the low and high horns a little apart and aim them the same direction, they reinforce each other instead of one masking the other. Give the terminals a shot of dielectric grease before you button things up. On the water, that little step is the difference between a horn that still works in year five and one that quietly corrodes.\u003c\/p\u003e\n\u003cp\u003eThe housings are galvanized metal finished in Hella's electric blue with a yellow housing, and they're built for the marine world. Galvanized steel holds up well, but it's still steel, so if you run in salt give the horns an occasional freshwater rinse and keep the connections protected. Do that and these things just keep working, which is the whole Hella Marine fit-and-forget idea.\u003c\/p\u003e\n\u003cp\u003eOnce it's wired, test it before you leave the dock. A quick sound check tells you the relay clicks, both horns fire, and you're getting that full dual-tone note instead of a weak single buzz. It's the kind of thing you want to know at the slip, not in a tight passing situation. And a horn earns its keep in exactly those moments, the short blasts you use to signal your intentions when you're meeting or overtaking another boat in close quarters. So it's worth getting the install right the first time.\u003c\/p\u003e\n\u003cp\u003eWho's this for? Center consoles, runabouts, day sailers, pontoons, and tenders that need a legitimate, loud, dual-tone horn without a big install. It's a straightforward swap for a tired factory horn or a proper first horn on a boat that never had one. Larger vessels running offshore in heavy wind may want additional signaling on top of it, but for the typical recreational boat this set covers your sound-signal needs and then some. Order before 3 PM Eastern and in-stock sets ship the same day.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003eDual tone output: one 280 Hz low tone horn plus one 350 Hz high tone horn for a fuller, easier-to-locate signal\u003c\/li\u003e\n  \u003cli\u003e118 decibel combined output cuts through wind and engine noise across a busy harbor\u003c\/li\u003e\n  \u003cli\u003e12 volt operation, 66 watt draw (about 5.5 amps) so wire it through a relay for a reliable blast\u003c\/li\u003e\n  \u003cli\u003eCompact 4.8 inch round disc design fits tight consoles, bows, and engine bays where a trumpet horn won't\u003c\/li\u003e\n  \u003cli\u003eGalvanized metal construction built for the marine environment\u003c\/li\u003e\n  \u003cli\u003eElectric blue horns with a yellow housing, Hella Marine fit-and-forget quality\u003c\/li\u003e\n  \u003cli\u003eSet of two matched horns, one low tone and one high tone, ready to mount and wire\u003c\/li\u003e\n  \u003cli\u003eFlat disc form drains spray when mounted at a slight downward angle\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"nvn-trust\"\u003e\n  \u003ch2\u003eWhy Buy from NVN Marine\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eAuthorized Hella Marine reseller, full manufacturer warranty\u003c\/li\u003e\n    \u003cli\u003eNMEA member and ABYC certified, advice from real boat techs\u003c\/li\u003e\n    \u003cli\u003eSame-day shipping before 3 PM ET on in-stock items\u003c\/li\u003e\n    \u003cli\u003eNY headquarters and Fort Lauderdale flagship retail store\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"nvn-faq\"\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow loud is this horn set?\u003c\/summary\u003e\n    \u003cp\u003eThe two horns together are rated at 118 decibels. That's a strong, carrying blast for a recreational boat, loud enough to get attention across a busy harbor or over wind and engine noise.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhy does the set have two horns?\u003c\/summary\u003e\n    \u003cp\u003eOne horn plays a 280 Hz low tone and the other a 350 Hz high tone. Blending a low tone under a high tone gives you a fuller sound that another skipper can pick out and locate more easily than a single note.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat voltage does it run on and how much current does it draw?\u003c\/summary\u003e\n    \u003cp\u003eIt runs on a 12 volt system. The pair draws 66 watts, which works out to roughly five and a half amps when both horns fire. Because of that draw we recommend wiring through a relay rather than straight through a dash switch.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDo I need a relay to wire it?\u003c\/summary\u003e\n    \u003cp\u003eWe recommend one. Run fused power from the battery to a relay and let the helm button trigger the relay coil. That keeps the switch and wiring cool and the horn at full volume. A relay and fuse aren't included, so plan to add them.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAre both horns included in the set?\u003c\/summary\u003e\n    \u003cp\u003eYes. You get two horns, one low tone and one high tone. Wiring, a relay, and a fuse are sold separately.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhere should I mount the horns?\u003c\/summary\u003e\n    \u003cp\u003eMount them where the sound can escape, not buried in a closed locker. Point the openings slightly down so water drains out. Spacing the two horns a little apart and aiming them the same way helps them reinforce each other.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow big is each horn?\u003c\/summary\u003e\n    \u003cp\u003eEach disc horn is about 4.8 inches round. The flat disc shape is a lot more compact than a trumpet horn, so it fits tight consoles and engine bays.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWill galvanized metal hold up in saltwater?\u003c\/summary\u003e\n    \u003cp\u003eGalvanized steel stands up well to the marine environment. If you run in salt, give the horns an occasional freshwater rinse and put dielectric grease on the terminals to keep the connections protected.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat size boat is this set right for?\u003c\/summary\u003e\n    \u003cp\u003eIt's a great fit for center consoles, runabouts, day sailers, pontoons, and tenders. Larger vessels running offshore in heavy wind may want additional signaling on top of it, but for a typical recreational boat this set covers your sound-signal needs.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"nvn-specs\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003eTitle\u003c\/th\u003e\n\u003ctd\u003eHella Marine Dual Tone Disc Horn Set, 12V 280\/350 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eHella Marine\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003e003399911\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e4082300858280\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eHorn Type\u003c\/th\u003e\n\u003ctd\u003eDual Tone Disc Horn\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSet Contents\u003c\/th\u003e\n\u003ctd\u003eTwo horns (one low tone, one high tone)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eLow Tone Frequency\u003c\/th\u003e\n\u003ctd\u003e280 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eHigh Tone Frequency\u003c\/th\u003e\n\u003ctd\u003e350 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSound Level\u003c\/th\u003e\n\u003ctd\u003e118 Decibels\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eVoltage\u003c\/th\u003e\n\u003ctd\u003e12 Volt\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePower Draw\u003c\/th\u003e\n\u003ctd\u003e66 Watt\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eHorn Diameter\u003c\/th\u003e\n\u003ctd\u003e4.8 Inch Round\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd\u003eElectric Blue\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eHousing Color\u003c\/th\u003e\n\u003ctd\u003eYellow\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eHousing Material\u003c\/th\u003e\n\u003ctd\u003eGalvanized Metal\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How loud is this horn set?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The two horns together are rated at 118 decibels. That's a strong, carrying blast for a recreational boat, loud enough to get attention across a busy harbor or over wind and engine noise.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Why does the set have two horns?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"One horn plays a 280 Hz low tone and the other a 350 Hz high tone. Blending a low tone under a high tone gives you a fuller sound that another skipper can pick out and locate more easily than a single note.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What voltage does it run on and how much current does it draw?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It runs on a 12 volt system. The pair draws 66 watts, which works out to roughly five and a half amps when both horns fire. Because of that draw we recommend wiring through a relay rather than straight through a dash switch.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Do I need a relay to wire it?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"We recommend one. Run fused power from the battery to a relay and let the helm button trigger the relay coil. That keeps the switch and wiring cool and the horn at full volume. A relay and fuse aren't included, so plan to add them.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Are both horns included in the set?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. You get two horns, one low tone and one high tone. Wiring, a relay, and a fuse are sold separately.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Where should I mount the horns?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Mount them where the sound can escape, not buried in a closed locker. Point the openings slightly down so water drains out. Spacing the two horns a little apart and aiming them the same way helps them reinforce each other.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How big is each horn?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Each disc horn is about 4.8 inches round. The flat disc shape is a lot more compact than a trumpet horn, so it fits tight consoles and engine bays.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Will galvanized metal hold up in saltwater?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Galvanized steel stands up well to the marine environment. If you run in salt, give the horns an occasional freshwater rinse and put dielectric grease on the terminals to keep the connections protected.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What size boat is this set right for?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's a great fit for center consoles, runabouts, day sailers, pontoons, and tenders. Larger vessels running offshore in heavy wind may want additional signaling on top of it, but for a typical recreational boat this set covers your sound-signal needs.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"Hella Marine","offers":[{"title":"Default Title","offer_id":45074400739421,"sku":"2009243","price":47.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/ImageServerAPI_593f5e70-a228-4596-8ab7-828c17345ad9.jpg?v=1789802516","url":"https:\/\/nvnmarine.com\/products\/hella-marine-dual-tone-disc-horn-set-12v-118-db","provider":"NVN Marine","version":"1.0","type":"link"}