{"product_id":"performance-optimized-down-fire-sealed-dual-10-enclosure-audiofrog-gb10","title":"Performance Optimized Down Fire Sealed Dual 10\" Enclosure | Audiofrog GB10","description":"\u003cdiv class=\"po-wrap\"\u003e\n\u003cstyle\u003e\n.po-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.8;color:#1e293b;max-width:1200px;margin:0 auto;background:#fff}\n.po-hero{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%);padding:60px 40px;text-align:center;color:#fff}\n.po-hero .po-title{font-size:2.6em;font-weight:800;text-transform:uppercase;letter-spacing:2px;margin:0 0 10px 0;color:#fff}\n.po-hero .po-subtitle{font-size:1.2em;font-weight:300;opacity:.9;margin:0 0 30px 0}\n.po-badges{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin-top:20px}\n.po-badge{background:rgba(184,115,51,.2);border:1px solid #b87333;color:#d99058;padding:8px 20px;border-radius:20px;font-size:.9em;font-weight:600;letter-spacing:.5px}\n.po-section{padding:50px 40px;border-bottom:1px solid #e2e8f0;background:#fff}\n.po-section:nth-child(even){background:#fef3e7}\n.po-section h2{color:#8b5a2b;font-size:2em;font-weight:700;margin:0 0 20px 0;padding-bottom:12px;border-bottom:3px solid #b87333}\n.po-section h3{color:#0f172a;font-size:1.4em;font-weight:600;margin:30px 0 15px 0}\n.po-section p{font-size:1.05em;color:#334155;margin-bottom:18px}\n.po-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin:30px 0}\n.po-card{background:#fff;border:1px solid #e2e8f0;border-top:4px solid #b87333;padding:25px;border-radius:4px}\n.po-card h4{color:#8b5a2b;font-size:1.15em;font-weight:700;margin:0 0 12px 0;text-transform:uppercase;letter-spacing:1px}\n.po-card p{font-size:.98em;color:#475569;margin:0}\n.po-highlight{background:#fef3e7;border-left:4px solid #b87333;padding:25px 30px;margin:30px 0;border-radius:4px}\n.po-highlight p{color:#1e293b;margin:0;font-size:1.05em}\n.po-cta{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%);padding:60px 40px;text-align:center;color:#fff}\n.po-cta h2{font-size:2.2em;font-weight:700;margin:0 0 20px 0;color:#fff;border:none;padding:0}\n.po-cta p{font-size:1.15em;opacity:.92;max-width:800px;margin:0 auto 20px auto;color:#fff}\n@media (max-width:768px){.po-hero{padding:40px 20px}.po-hero .po-title{font-size:1.8em}.po-section{padding:30px 20px}.po-section h2{font-size:1.6em}.po-grid{grid-template-columns:1fr}.po-cta{padding:40px 20px}.po-cta h2{font-size:1.6em}}\n\u003c\/style\u003e\n\u003cdiv class=\"po-hero\"\u003e\n\u003cp class=\"po-title\"\u003ePerformance Optimized Down Fire | Audiofrog GB10\u003c\/p\u003e\n\u003cp class=\"po-subtitle\"\u003eDual 10\" Sealed Down Fire Enclosure | Floor-Firing Trunk or Cargo Design\u003c\/p\u003e\n\u003cdiv class=\"po-badges\"\u003e\n\u003cspan class=\"po-badge\"\u003e0.60 ft3 Net Per Driver\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e0.73 ft3 Gross Per Chamber\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eQtc 0.823 to 0.848\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eDual Chamber Down Fire\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e30\" x 15\" x 9.06\"\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eTwo Audiofrog GB10 Firing Into the Floor\u003c\/h2\u003e\n\u003cp\u003eAudiofrog's GB10, a 76 mm coil on a vented cast aluminum basket with a copper pole cap, in two switchable coil versions. The alignment below is computed from Audiofrog's published Thiele-Small parameters, which are carried per coil version rather than shared, because Audiofrog measures each one.\u003c\/p\u003e\n\u003cdiv class=\"po-highlight\"\u003e\u003cp\u003eThis cabinet holds the same 0.60 cubic feet per driver as our wedge version of the same pair, so the two publish the same Qtc and the same F3. They are the same enclosure in two shapes. Pick the one that fits where the cabinet has to live.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eTwo Fully Separate Chambers\u003c\/h2\u003e\n\u003cp\u003eA full height bonded 3\/4 inch MDF divider gives each GB10 its own sealed 0.73 cu ft gross chamber and its own polyfill. Two drivers sharing one volume interact acoustically, each cone's compression stroke becoming the pressure the other works against. A divider removes that entirely.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eWhy Down Fire\u003c\/h2\u003e\n\u003cp\u003eA down fire cabinet sits flat on the trunk or cargo floor with the cones facing down, which keeps the top surface usable and puts the enclosure where a wedge cannot go. It is the answer when there is no rear seat back to lean against, when the load floor has to stay flat, or when the build is a truck rather than a sedan trunk.\u003c\/p\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eBoth Cones Fire Downward\u003c\/h4\u003e\n\u003cp\u003eThe floor becomes the first reflecting surface, which loads the cabin evenly rather than aiming at one seat.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eFeet Ship Uninstalled\u003c\/h4\u003e\n\u003cp\u003eMount them to suit your floor, or leave them off and run the cabinet front firing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eFlat Top, Usable Space\u003c\/h4\u003e\n\u003cp\u003eA rectangular 30 by 15 inch footprint stacks and straps in a way a wedge cannot.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eFlush Recess Baffle\u003c\/h4\u003e\n\u003cp\u003eThe outer 3\/4 inch layer is machined as a recess so each driver bolts to the inner layer, recovering 3\/4 inch of internal clearance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eEngineered for the Audiofrog GB10\u003c\/h2\u003e\n\u003cp\u003eAt 0.60 cubic feet net per driver the Audiofrog GB10 runs a system Qtc of \u003cstrong\u003e0.823 to 0.848\u003c\/strong\u003e with resonance at 51.6 to 52.6 Hz. That is Audiofrog's own recommended sealed volume, 17 liters in their documentation, and theirs is a net figure exactly as ours is. Half power lands at 44.4 to 46.3 Hz anechoic, before any cabin gain.\u003c\/p\u003e\n\u003ch3\u003eAlignment Numbers\u003c\/h3\u003e\n\u003cp\u003eQtc 0.823 to 0.848 · fc 51.6 to 52.6 Hz · F3 44.4 to 46.3 Hz anechoic\u003c\/p\u003e\n\u003ch3\u003eMounting Geometry\u003c\/h3\u003e\n\u003cp\u003eBoth positions CNC cut to 9.2520 in. Mounting depth available is 6.81 in against the 6.260 in the GB10 requires, with 2.05 in of clearance above the motor once the driver is in. Threaded inserts pressed in at every mounting location.\u003c\/p\u003e\n\u003ch3\u003eFloor Clearance\u003c\/h3\u003e\n\u003cp\u003eAt the standard 1.75 inch standoff the gap around each cone works out to 0.95 of the cone's own area. That figure is set by the driver's diameter rather than by this cabinet, and every 10 inch down fire enclosure lands near it. Raising the feet increases it if your floor allows.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003ePerformance Series Construction, Driver-Specific Tuning\u003c\/h2\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eLangboard Elite MDF\u003c\/h4\u003e\n\u003cp\u003ePremium 3\/4 in MDF throughout.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eV-Groove and Dado Joinery\u003c\/h4\u003e\n\u003cp\u003eCNC cut V-grooves at every panel intersection, sides and divider seated in dados.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eDouble-Layer 1.5\" Baffle\u003c\/h4\u003e\n\u003cp\u003eTwo bonded 3\/4 in MDF sheets, outer layer machined as a flush recess.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eOne Proline X ABS and carbon fiber composite cup serving both chambers, 12 gauge OFC, side mounted.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eWiring the Pair to Your Amplifier\u003c\/h2\u003e\n\u003cp\u003eThe GB series does not bring its coils out to the terminals. Each driver carries an \u003cstrong\u003eimpedance selection switch\u003c\/strong\u003e, and the terminal cup wires the two positions in parallel, so the switch alone decides what the amplifier sees. \u003cstrong\u003eSet both drivers to the HIGH position.\u003c\/strong\u003e A pair of D2 drivers at 4 ohms each presents 2 ohms; a pair of D4 drivers at 8 ohms each presents 4 ohms. Leaving both in the low position halves that again, to 0.5 ohms on a D2 pair, which almost no amplifier is stable into. Set both switches the same way and set them before you mount the drivers, because the switch faces the motor.\u003c\/p\u003e\n\u003cp\u003ePower handling is 1000 watts RMS total across the pair. Aim for roughly 700 to 1000 watts at the impedance you select.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eBuilt in Tennessee, Backed by Audio Intensity\u003c\/h2\u003e\n\u003cp\u003eCut and assembled in Tullahoma, Tennessee on our own CNC equipment. Finished in plush black carpet. 1 year limited warranty. Enclosure only, the drivers are purchased separately. Call 931-563-5151.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-cta\"\u003e\n\u003ch2\u003eAudiofrog GB10 Down Fire: The Wedge Alignment, A Different Shape\u003c\/h2\u003e\n\u003cp\u003e0.60 cubic feet net per driver at Qtc 0.823 to 0.848, F3 44.4 to 46.3 Hz, cut direct fit and built to order in Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":44613236752473,"sku":"PO 10D-S DF GB10","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-micro-series-dual-15-sealed-enclosure-built-for-resonix-gus-15subwoofer-enclosuresproline-x-9360178_510738d4-f9a9-489d-8e20-5119f4f9d4d6.jpg?v=1788133191","url":"https:\/\/audiointensity.com\/products\/performance-optimized-down-fire-sealed-dual-10-enclosure-audiofrog-gb10","provider":"Audio Intensity","version":"1.0","type":"link"}