{"product_id":"hella-marine-b36-low-tone-disc-horn-24v-116-db","title":"Hella Marine B36 Low-Tone Disc Horn 24V | 116 dB","description":"\u003cp class=\"nvn-hero\"\u003eThe Hella Marine B36 is a 24 volt low-tone disc horn that puts out a deep 116 decibels at 335 Hz. Galvanized metal housing, compact 4.40 inch round body, and mounting brackets in the box. It's the horn you rig up when you want to actually be heard.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eThe Hella Marine B36 is a low-tone disc horn built to be heard. It puts out 116 decibels at a deep 335 Hz, and that low pitch carries. On a busy waterway or a crowded work site, a low tone cuts through engine noise and wind better than a thin high note does. This is the horn you reach for when you want people to actually notice you.\u003c\/p\u003e\n\u003cp\u003e116 decibels is genuinely loud. That's about the level of a live band measured up close, so this is not a polite little beep. It's a warning signal meant to get attention across distance and over the racket of engines, generators, and traffic. If your current horn sounds like a sick goose, stepping up to a 116 dB low-tone unit is a night-and-day upgrade.\u003c\/p\u003e\n\u003cp\u003eFirst thing to know: this is a 24 volt horn. It's wired for 24V electrical systems, the kind you'll find on larger boats, commercial rigs, and heavier equipment. If your boat runs a 12 volt system, this isn't the horn for you. Check your system voltage before you order. Feed a 24V horn 12 volts and it'll sound weak and flat, if it sounds at all.\u003c\/p\u003e\n\u003cp\u003eThe design is a classic disc horn. Compact, round, 4.40 inches across, with the whole works packed behind a silver and black diaphragm. Disc horns like this one mount almost anywhere you've got a few inches of clearance, which is why they've been a go-to for decades. The housing is galvanized metal, so it shrugs off the kind of surface corrosion that eats cheaper horns alive. Mounting brackets come in the box, so you're not hunting for hardware on install day.\u003c\/p\u003e\n\u003cp\u003eLet's talk wiring, because this is where a lot of horn installs go sideways. At 72 watts on a 24 volt system, this horn pulls roughly 3 amps. That's more than you want running through a dash button or a flimsy switch. Wire it through a relay. Run the heavy leg from the battery through an inline fuse to the relay, then out to the horn, and use the horn button only to trigger the relay coil. Ground the horn to clean, bare metal. Do it that way and the horn sounds full every time and your switch lasts for years. Skip the relay and you'll be chasing a weak honk and a hot switch down the road.\u003c\/p\u003e\n\u003cp\u003eWhere you put it matters too. Point the horn opening slightly downward so water drains out instead of pooling on the diaphragm. Galvanized housing or not, no horn likes sitting in standing water. Tuck it behind a panel or under a console where it's protected from direct spray but still has a clear path for the sound to escape. A horn buried in a sealed box gets muffled fast.\u003c\/p\u003e\n\u003cp\u003eThis is the low-tone half of the B36 family. On its own it's a strong, deep single note that does the job. If you want that classic two-tone sound, the kind that really turns heads, pair it with the matching high-tone B36 horn and wire both to the same button. Two horns, two pitches, one push. That's a setup a lot of folks run on bigger boats and rigs where they want to be unmistakable.\u003c\/p\u003e\n\u003cp\u003eBottom line: the Hella B36 low-tone disc horn is a simple, durable piece of gear that does one thing well. It's loud, it's built to last, and it installs clean if you wire it right. For any 24 volt rig that needs a serious horn, it's an easy call. And if you're not sure whether your system is 12 or 24 volt, give us a shout before you order. We'll help you get the right part the first time.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003e116 decibel output at 335 Hz for a deep low tone that carries over engine and wind noise\u003c\/li\u003e\n  \u003cli\u003e24 volt operation, sized for larger boats, commercial rigs, and heavy equipment running 24V systems\u003c\/li\u003e\n  \u003cli\u003e72 watt draw, roughly 3 amps at 24V, so wire it through a relay for full volume and a switch that lasts\u003c\/li\u003e\n  \u003cli\u003eGalvanized metal housing resists surface corrosion in harsh, wet environments\u003c\/li\u003e\n  \u003cli\u003eCompact 4.40 inch round disc body fits almost any mounting spot with a few inches of clearance\u003c\/li\u003e\n  \u003cli\u003eSilver and black diaphragm in a sealed disc-horn design\u003c\/li\u003e\n  \u003cli\u003eMounting brackets included in the box, no extra hardware to source\u003c\/li\u003e\n  \u003cli\u003eLow-tone member of the B36 series, pair with the matching high-tone horn for a two-tone setup\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\u003eIs this a 12 volt or 24 volt horn?\u003c\/summary\u003e\n    \u003cp\u003eIt's a 24 volt horn, built for 24V electrical systems on larger boats and commercial equipment. Running it on 12 volts will make it sound weak or not fire at all. Check your system voltage before ordering.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow loud is it?\u003c\/summary\u003e\n    \u003cp\u003e116 decibels at 335 Hz. That's a deep, low tone that carries well over engine noise and wind. It's a serious warning horn, not a quiet courtesy beep.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this one horn or a pair?\u003c\/summary\u003e\n    \u003cp\u003eOne horn, the low-tone unit. It works on its own as a strong single note. For a two-tone sound, pair it with the matching high-tone horn in the same series wired to the same button.\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 strongly recommend it. At 72 watts on 24V the horn pulls about 3 amps, more than most dash buttons should carry. Wire the heavy leg through a fused relay and use the button to trigger the relay coil.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWill the galvanized housing hold up outdoors?\u003c\/summary\u003e\n    \u003cp\u003eGalvanized metal resists surface corrosion well. Mount it so the opening points slightly down to drain water, keep it out of standing spray, and it'll last.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAre mounting brackets included?\u003c\/summary\u003e\n    \u003cp\u003eYes. The horn ships with mounting brackets in the box, so you don't need to source extra hardware.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow big is it?\u003c\/summary\u003e\n    \u003cp\u003eThe disc body is 4.40 inches round, compact enough to tuck behind a panel or under a console with a few inches of clearance.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat's the tone like?\u003c\/summary\u003e\n    \u003cp\u003eIt's a low tone at 335 Hz, deep and full rather than sharp. Low tones tend to carry farther and cut through background noise better than high-pitched horns.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat's the warranty?\u003c\/summary\u003e\n    \u003cp\u003eFull Hella Marine manufacturer warranty applies. We're an authorized Hella Marine reseller, so any warranty claim runs through us.\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\u003eOne 335 Hertz Low-Tone Disc Horn; 116 Decibels; 24 Volt; 72 Watt; 4.40 Inch Round; Silver\/ Black Diaphragm; Galvanized Metal Housing; With Mounting Brackets\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\u003e002768382\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e760687953708\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSeries\u003c\/th\u003e\n\u003ctd\u003eB36 Series\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eHorn Type\u003c\/th\u003e\n\u003ctd\u003eLow-Tone Disc Horn\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSound Level\u003c\/th\u003e\n\u003ctd\u003e116 Decibels\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eFrequency\u003c\/th\u003e\n\u003ctd\u003e335 Hertz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eVoltage\u003c\/th\u003e\n\u003ctd\u003e24 Volt\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePower\u003c\/th\u003e\n\u003ctd\u003e72 Watt\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eDiameter\u003c\/th\u003e\n\u003ctd\u003e4.40 Inch Round\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eDiaphragm\u003c\/th\u003e\n\u003ctd\u003eSilver\/Black\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    \u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eMounting Brackets Included\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\": \"Is this a 12 volt or 24 volt horn?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's a 24 volt horn, built for 24V electrical systems on larger boats and commercial equipment. Running it on 12 volts will make it sound weak or not fire at all. Check your system voltage before ordering.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How loud is it?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"116 decibels at 335 Hz. That's a deep, low tone that carries well over engine noise and wind. It's a serious warning horn, not a quiet courtesy beep.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is this one horn or a pair?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"One horn, the low-tone unit. It works on its own as a strong single note. For a two-tone sound, pair it with the matching high-tone horn in the same series wired to the same button.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Do I need a relay to wire it?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"We strongly recommend it. At 72 watts on 24V the horn pulls about 3 amps, more than most dash buttons should carry. Wire the heavy leg through a fused relay and use the button to trigger the relay coil.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Will the galvanized housing hold up outdoors?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Galvanized metal resists surface corrosion well. Mount it so the opening points slightly down to drain water, keep it out of standing spray, and it'll last.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Are mounting brackets included?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. The horn ships with mounting brackets in the box, so you don't need to source extra hardware.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How big is it?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The disc body is 4.40 inches round, compact enough to tuck behind a panel or under a console with a few inches of clearance.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What's the tone like?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's a low tone at 335 Hz, deep and full rather than sharp. Low tones tend to carry farther and cut through background noise better than high-pitched horns.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What's the warranty?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Full Hella Marine manufacturer warranty applies. We're an authorized Hella Marine reseller, so any warranty claim runs through us.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"Hella Marine","offers":[{"title":"Default Title","offer_id":45077838430301,"sku":"2009835","price":25.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/ImageServerAPI_0a29df44-0f81-4463-a36a-cebb27295787.jpg?v=1789924036","url":"https:\/\/nvnmarine.com\/products\/hella-marine-b36-low-tone-disc-horn-24v-116-db","provider":"NVN Marine","version":"1.0","type":"link"}