There's a heat wave ravaging the world, so what better time than now to look at more ridiculously huge subwoofers that draw enough current to crash the grid? The company today is Hemp Acoustics, the only company in the world that uses cannabis sativa to create standard speaker drivers, full-range drivers and massively huge subwoofers. Hemp Acoustics' pride and joy is the 25 inch (630mm) "Tsuzureko" subwoofer driver, the culmination of years of extensive engineering and repeated bong hits.

The Tsuzureko (the name of the world's largest drum) has a frequency of 18-1000Hz and can handle up to 3000 watts of juice. There is also a "high output" version in the works, no doubt for SPL competitions and impressing chicks outside of Fatburger. Hemp Acoustics also makes a full arsenal of green drivers from 18" down to 3" as well as a number of "full range" drivers for the DIY scene and speaker manufactures like Omega who uses an 8" version in their Compact Hemp, Super Hemp and Max Hemp speakers.

Hemp Acoustics also runs a full fabrication facility for building custom drivers out of hemp. The advantages of hemp are said to improve cone stiffness, reduce weight and provide a "more natural sounding tone, when compared to paper, kevlar, kenaf, aluminum, magnesium, ceramic, carbon fiber or any material we have researched." Or, as one person told me, "dude, it's Mary Jane for your ears!"

The Tsuzureko runs a sensitivity of 96dB, 4 ohms, weighs 62 lbs and lands in rap videos everywhere next month. Be prepared.