B2 Audio XM 3000 RMS 21 Inch Subwoofer
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Above Excellence
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 dB.
Both XM drivers also inherited the OCAF* motor design that allows for both longer excursion and minimizes heat and distortion.
4 Ga push terminals connects to the heavy duty quad multilayer and high strand count tinsels.
They ensure power is fed to the 4″ ceramic coated voice coil with minimum amounts of loss.
Tall & narrow foam surrounds on ultra condensed fiber blended cones, with 100% progressive Nomex spiders will keep long excursions in check,
and the 8″ carbon fiber dustcap stabilizes the cone further.
*SAFT – Smooth Air Flow Tech *OCAF – Optimized Cooling And Flow
| Specifications: | XM21 |
| Frequency Response: | 10 Hz ~ 500 Hz |
| Sensitivity 2.83 v: | 99.7 dB |
| Nominal Impedance: | Dual 0.75 Ohm |
| DC Resistance Series (RE): | 1.6 Ohm |
| Resonance Frequency (FS): | 28.8 Hz |
| Power Handling: | 3000 Watts |
| Peak Dynamic Power Handling: | 9000 Watts |
| QMS: |
3.82 |
| QES: | 0.44 |
| QTS: | 0.39 |
| VAS: | 114.3 L |
| Voice Coil Diameter: | 4" |
| CMS: | 30 um/N |
| MMS: | 790 g |
| BL² /RE: | 345.7 |
| Magnet Weight: |
1075 Oz |
| XMAX: |
40 mm |
| Displacement: |
18.4 L / 0.65 cu.ft |
*It is essential that our subwoofers are given time to allow the suspension to soften up. Depending on use, this may take several weeks. While this process is undergoing, it is not recommended to apply full amplification power according to the subwoofers specs. Once the moving parts have been broken in, the performance of your subwoofer will increase.
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