As one electronic-music night ends, another begins. Sayonara, Bonkers!; greetings, J4CK17 (aka JACKIT). Thus the balance of Seattle's underground electronic scene is maintained.

Bonkers!—led by promoter/musician Ian Scot Price—has championed adventurous producers and DJs for the last two-plus years, most of it IDM, but also electro, techno, ambient, experimental, and other styles. The legendary monthly is going out large Friday, with a finale called In Search of the Bass Crystal. Past Data Breaker stars PotatoFinger, Ya No Mas, and Splatinum should bring the hyperkinetic, post-jungle madness; eccentric electro; and foundation-threatening, grimey bounce, respectively. Jacob London member Hanssen has been doing some very interesting things in the narrow but fascinating space where techno and house conjugate. Future-bass-music impresario Ill Cosby—who runs the Car Crash Set label and hosts a badass show on glitch.fm—has been toasting speaker cones with his own ominous UK funky/dubstep-inflected productions. Expect them to enter influential BBC disc jockey Mary Anne Hobbs's rotation any week now.

Price says that he and his crew will focus their energy on their Pleasure Boat label, make music alone and together, and throw shows whenever they feel like it. They're not finished dunking Seattle in awesome sounds just yet.

J4CK17 is the latest caper by local DJs/promoters Knightriders Inc., who specialize in powerful techno for headstrong extroverts. KR's honchos describe J4CK17's concept: "This series was influenced by the early days of underground music in Detroit, where you would hear Chicago house, Detroit techno, industrial, hiphop, '80s rock, disco, electro, etc." This new venture's debut spotlights KR fixtures Goner and Trench, plus recent Seattle-via-Russia transplant Hi Octane (aka Ilya Makedon). Judging by his mixes, Hi Octane displays the brainy yet banging aesthetic that makes Knightriders events sweatfests, but he's into subtler, more soulful styles, too.

Last but most, Audion (Ghostly/Spectral Sound guru Matthew Dear) will take over the swanky Triple Door Monday with what promises to be an overwhelming audio-visual spectacle that Dear has dubbed the Hecatomb Tour (see www.audion.me for eye/ear dazzle). With a set consisting of stroboscopic op-art spirals pulsating on three screens, Audion surfeits eyes as much as he does ears. Essentially, Audion creates some of the raunchiest and most machinelike dance music ever—the soundtrack to scorching-hot mechanical sex... on potent hallucinogens. When not in full-on thrusting mode, though, Audion's music tilts toward the ominous side, as epitomized by the epic creeper "I Am the Car." Regardless of style, Audion will likely bring the most intense, senses-saturating experience the Triple Door has ever hosted.

PotatoFinger, Ill Cosby, Splatinum, Hanssen, Norse Rarebit perform Fri Nov 13, Re-bar, 10 pm, $5 before 11, 21+; Hi Octane, Goner, Trench perform Sat Nov 14, Re-bar, 10 pm, $8, 21+; Audion, Pezzner, James Grindle, Travis Baron perform Mon Nov 16, Triple Door, 10 pm, $15 adv/$18 DOS, 21+.