This 15-inch subwoofer is as monstrously capable as it looks, delivering deep, loud bass for daily music and advanced SPL for competition builds. B2 Audio's advanced basket design allows for enhanced cooling and increased XMax. Featuring a 12.4 inch spider pack, large diameter stitched surround, oversized 4" American Made voice coils, and B2 Audio's OCAFv2 motor cooling technology. This 4,000-watt RMS Rampage subwoofer is guaranteed to not only perform, but sound amazing.
OCAF version 2 (Optimized Cooling And Flow) implemented in the new motor design has added oversized cooling ports with large flares around the perimeter of the voice coil as well as the pole piece being vented on both the top and bottom. This dual cooling system increases the flow and leads hot air more efficiently away from both sides of the voice coil. The voice coils for the Rampage have an internal diameter of 4", and a outer diameter of 4.33". Added with a 8 layer tall wound design, the Rampage XMv3 will endure the longest demo's and incredible amounts of power without overheating or failing.
The RAMPAGE XMv3’s motor keeps the same 10.24″ diameter as previous XM subwoofers, but the triple stack ferrite slugs are increased by 25%. Still we are able to keep the entire height of the motor to a mere 10% more than 2nd gen XM. With the longer Xmech, the added 10% comes into play.
Another tool was made for the XL composite dustcaps with embossed B2 logo. The half spherical design with wider wedges stiffens up the cone, offering greater stability, and helps keep that transient response tight. So when the bass drops its on point. Using a slightly wider strech foam surround there’s less mechanical parts that will limit your stroke.
Rampage 18 V4 Specifications:
|Sensitivity||92.3 dB||89 dB|
|Nominal Impedance||Dual 1 ohm||Dual 1.8 ohm|
|DC Resistance (DC)||1ohm||2ohm|
|Voice Coil Dim||4"||4"|
|Power Handling||4000 watts||4000 watts|
|Peak Dynamic Power||12000 watts||12000 watts|
|XMAX one way (mm)||40||40|
|VAS||31.8 L||39 L|
|FS||27.5 Hz||27.2 Hz|
|Magnet||1100 oz||1100 oz|
|Displacement||17.6 L/ .62 cu. ft||17.6 L/ .62 cu. ft|