The Bass Blaster subwoofer series is a truly unique blend of car audio nostalgia and modern technology. Designed and built as a product of love for car audio, this subwoofer will look as good in your installation as it will sound. As lifelong enthusiasts ourselves, we knew the demands this subwoofer would need to meet. The engineering expertise of Jacob Fuller, founder of Sundown Audio, has led to a subwoofer that can take the abuse of high-powered systems that the modern-day enthusiast likes to throw at everything. Advanced cooling techniques, high-excursion linear suspension, and classically inspired aesthetics mean The Bass Blaster will give you the best-sounding bass, for a long time, as you turn the heads of anyone that takes a look. Design Our philosophy with The Bass Blaster was to recreate the feel of car audio from our youth. The blue surround is not just our branding color, it is an homage to woofers of the 1990s that used brightly colored surrounds as a signature look. The balance of the blue to the grey/silver basket and cone harkens back to the early 2000s when some of our favorite woofer models sported a distinct style. The aluminum dust cap gives depth and texture to the woofer as a whole and adds rigid reinforcement to the cone body. The genesis of the design was the motor itself, the large vent for the four-inch coil caught our eye in car audio shops in the 1990s. Jacob Fuller captured that look while tapering the vent and adding a pole cap so as to not compromise modern cooling techniques for the best performance-to-aesthetics ratio possible. Topped off with the metal mesh over the magnet slugs, The Bass Blaster is the 90s/2000s woofer we all wish we had in our teens, but even better that we have it in our 40s. General Specifications Power handling 2000W RMS Dual voice coil D2 or D4 Xmax (mm one way) 25 Xmech (mm one way) 50 Heat-treated 4-layer 4-inch coil Quad braided tinsel leads Multi-layer foam surround in Sparked Blue Aluminum dust cap Cast aluminum frame High-velocity motor cooling Measurements Parameter Metric (mm) Imperial (in) Outer Diameter 464.06 18.27 Mounting Diameter 426.47 16.79 Overall Depth 301.36 11.86 Mounting Depth 271.36 10.68 T/S Parameters Parameter D2 D4 RE (Ohms) 3.91 5.94 Fs (Hz) 26.72 27.44 VAS (L) 70.36 74.16 Qes 0.63 0.69 Qms 6.86 6.67 Qts 0.58 0.63 BL 32.08 36.54 Mms (Grams) 994.75 894.78 Cms (uM/N) 35.66 37.60 Sensitivity (dB @2.83Vrms/1m) 88.11 @ 1 kHz 86.52 @ 1 kHz ENCLOSURE RECOMMENDATIONS #testModal{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.5);z-index:9999;overflow-y:auto}.modal-content{background:#fff;margin:5% auto;padding:20px;width:90%;max-width:500px;position:relative;z-index:10000;max-height:90vh;overflow-y:auto}.close{position:absolute;right:20px;top:15px;font-size:24px;cursor:pointer;color:#666;transition:color .3s}.close:hover{color:#000}.config-table-wrapper{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}.config-table{width:100%;border-collapse:collapse;margin:20px 0;min-width:800px}.config-table td,.config-table th{border:1px solid #ddd;padding:8px;white-space:nowrap;vertical-align:middle}.config-table th{background-color:#f4f4f4;text-align:center;position:sticky;top:0}.config-table td:nth-child(1){text-align:center}.config-table td:nth-child(2){text-align:left}.config-table td:nth-child(3),.config-table td:nth-child(4),.config-table td:nth-child(5),.config-table td:nth-child(6),.config-table td:nth-child(7),.config-table td:nth-child(8){text-align:center}.config-table td:last-child{text-align:center;vertical-align:middle;padding:8px;height:100%}.config-table td:nth-child(6){line-height:1.1}.config-table td:nth-child(6) br{margin-top:-2px}.button.button--primary{margin:0!important;line-height:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;padding:0 30px;vertical-align:middle}.config-table .port-header{text-align:center;border-bottom:none!important}.config-table .sub-header{border-top:none!important}.button{text-align:center;font-weight:var(--text-font-bolder-weight);font-size:var(--base-text-font-size);cursor:pointer;border-radius:2px;transition:background .25s ease-in-out,color .25s ease-in-out,box-shadow .25s ease-in-out;position:relative;margin:0!important}.button--primary{background:var(--primary-button-background);color:var(--primary-button-text-color)}.modal-content h3{margin:0 0 15px;font-size:1.2em}.modal-content h4{margin:12px 0 8px;font-size:1em}.spec-section{margin-bottom:12px}.spec-list{margin:0;padding:0 0 0 20px;list-style-type:none}.spec-list li{margin:4px 0;line-height:1.3}.alignment-type{cursor:help;border-bottom:1px dotted #666}@media (max-width:768px){.modal-content{margin:3% auto;padding:15px;width:95%}.close{right:15px;top:10px}.config-table-wrapper::after{content:'';position:absolute;top:0;right:0;bottom:0;width:5px;background:linear-gradient(to left,rgba(0,0,0,.1),transparent);pointer-events:none}} Size Enclosure Type Volume (ft³) Port Tuning (Hz) Details Type Dia. (in) Length (in) 18" QB3 - Flat Response 6.50-8.50 Round 6 25" @ 6.50ft³18" @ 8.50ft³ 20 Details 18" QB3 - Low-Frequency Peak 7.00-9.50 Round 6 16" @ 7.00ft³11" @ 9.50ft³ 23 Details 18" SBB4 - Flat Response 3.25-4.25 Round 6 18" @ 3.25ft³13" @ 4.25ft³ 32 Details 18" SBB4 - Loud Bass Response 6.50-10.00 Round Two x 6 18" @ 6.50ft³11" @ 10.00ft³ 32 Details × const configDetails={'18-qb3-flat':`18" Low-frequency tuning (QB3) - Flat Response📐 Technical SpecificationsBox Volume: 6.50 ~ 8.50 ft³Port Type: RoundPort Diameter: 6 inchesPort Length: 25" (6.50 ft³) ~ 18" (8.50 ft³)Tuning Frequency: 20 Hz🎵 CharacteristicsPlays like a sealed box with more efficient output✅ ProsFlat response, similar output across all music genresLow-frequency extension - can play subsonicSmall enclosure sizes❌ ConsReduced Peak SPLSub-optimal transient responseLong port`,'18-qb3-peak':`18" Low-frequency tuning (QB3) - Low-Frequency Peak📐 Technical SpecificationsBox Volume: 7.00 ~ 9.50 ft³Port Type: RoundPort Diameter: 6 inchesPort Length: 16" (7.00 ft³) ~ 11" (9.50 ft³)Tuning Frequency: 23 Hz✅ ProsHigher-than-average output at low frequenciesLow-frequency extension - can play subsonic❌ ConsPeaky at lower-than-average frequenciesSub-optimal transient response`,'18-sbb4-flat':`18" General tuning (SBB4) - Flat Response📐 Technical SpecificationsBox Volume: 3.25 ~ 4.25 ft³Port Type: RoundPort Diameter: 6 inchesPort Length: 18" (3.25 ft³) ~ 13" (4.25 ft³)Tuning Frequency: 32 Hz🎵 CharacteristicsGreat bass response on rap and electronic musicQuick double bass drum✅ ProsHigher-than-average output along a wide frequency rangeSmall enclosureGood transient response❌ ConsLong portReduced Peak SPL`,'18-sbb4-loud':`18" General tuning (SBB4) - Loud Bass Response📐 Technical SpecificationsBox Volume: 6.50 ~ 10.00 ft³Port Type: RoundPort Diameter: Two x 6 inchesPort Length: 18" (6.50 ft³) ~ 11" (10.00 ft³)Tuning Frequency: 32 Hz🎵 CharacteristicsGreat for rap, quick double bassHigh frequencies become boomyTeeth rattling output✅ ProsLoudGeneral box size with wide availabilityGreat transient response❌ ConsPeaky with steep roll-off on lower-than-average frequencies`};function openModal(e){const t=document.getElementById("testModal"),n=document.getElementById("modalContent");n.innerHTML=configDetails[e],t.style.display="block"}function closeModal(){document.getElementById("testModal").style.display="none"}window.onclick=function(e){const t=document.getElementById("testModal");e.target==t&&closeModal()},document.addEventListener("DOMContentLoaded",function(){const e=document.querySelector(".close");e&&e.addEventListener("click",closeModal)});