B2 Audio Rampage 18" Subwoofer
Review: 5 - "A masterpiece of literature" by , written on May 4, 2006
I really enjoyed this book. It captures the essential challenge people face as they try make sense of their lives and grow to adulthood.

B2 Audio Rampage 18" Subwoofer

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  • Product SKU: G2D0843E
$1,199.99 $1,299.99
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Spawned from «the first of the five – X2C» we created the XM, a subwoofer sharing many of the ideas from the X2C, but scaled down to a 4″ voice coil.
With the same SAFT* design basket on the 15″, airflow is optimized for best possible cooling and increase in the SPL.
All drivers also inherited the OCAF* motor design that allows for both longer excursion and minimizes heat and distortion. In 2016 we introduced the V2 of the XM. Where the V1 was efficient and brutal, the V2 goes beyond the extreme for a 4″ voice coil design. We even added the option of a 21″, whereas the 15″ and 18″ are also available in both dual 1 and dual 2 ohm.

The new tall wind voice coils has increased xmax by 30%, not to mention the benefits of a more efficient powerhandling as well. To transfer the power to the coil, we still use the 4 Ga push terminals  with heavy duty quad multilayer high strand count tinsels. On the XM15″, these are even mounted to a ~12″ 100% Nomex spider, whereas the XM18 settles for 10″ which is far better than the norm.

Semi-pressed, fiber blend cones coupled with high roll surrounds and dual stitching ensures stability at high excursion. This new blend has also made the cones lighter, but strength is now superior compared to ordinary cones. As a little bling, we highlighted the B2 logo on all 2016 subwoofers.

XM Manual


XM18v2 D1

XM18v2 D2


Frequency Response:

10 Hz ~ 500 Hz

10 Hz ~ 500 Hz

Sensitivity 2.83 v:

96.05 dB

92.49 dB

Nominal Impedance:

Dual 0.75 Ohm

Dual 1.8 Ohm

DC Resistance Series (RE):

1.4 Ohm

3.7 Ohm

Resonance Frequency (FS):

31.3 Hz

31.9 Hz

Power Handling:

3000 Watts

3000 Watts

Peak Dynamic Power Handling:

12000 Watts

12000 Watts











65.9 L

65.7 L

Voice Coil Diameter:




30 um/N

30 um/N


646 g

628.8 g

BL² /RE:



Magnet Weight:

1075 Oz

1075 Oz


40 mm

40 mm


15.78 L / 0.557 cu.ft

15.78 L / 0.557 cu.ft