Miserable sound mix mars Def Leppard show Monday, September 13 - The Grand Rapids Press If President Clinton's electorate were as forgiving as Def Leppard's audience at Saturday's Allegan County Fair show, that pesky little Monica Lewinsky matter would've gone away in a matter of days. Despite poorly done sound mixing that reduced frontman Joey Elliot's tigerish vocals to the mew of a crippled kitten, the sellout crowd at Saturday night's show pounded its feet on the bleachers, begging for more. But then again, what ruined the evening was the sound mix, not the sound itself. Even Elliot's between-song banter was often a muddy murmur, and songs such as "Hysteria" "Rocket" and final encore "Let It Go" were unintelligible. Sound quality did clear up in some of the ballads, including "Goodbye," an offering off the new "Euphoria" album that recalls the mock-rock urgency of "Living On A Prayer" era Bon Jovi. "Where would rock and roll be without the cheesy power ballad?" queried my concert companion. But even the crowd-pleaser "Love Bites" was bitten by the band's obvious lack of preparation. While the five-piece scarcely strayed from album cuts throughout the night, "Love Bites" was one that featured an extended closing. Guitarist Phil Collen barely eked out two chords while the spotlight showcased him during the tedious solo segue. Through the rest of the show, though, Collen was showy to the point of upstaging Elliot. Repeatedly, he continued his solos after the cue for Elliot to sing, further muddying the already inaudible vocals. Just over an hour into the show, however, Elliot received some of the most heartfelt applause of the evening when he queried, "Does anyone remember 1983?" and the group raged through "Photograph" with few sound complications. Having finally electrified the audience, Leppard kept up the pace with "Rocket," a flawless, fiery "Pour Some Sugar On Me" and "Rock Of Ages." Lest I imply the night's only saving graces were the cotton candy vendor and Cassiopeia and other constellation clusters looming lovely over the stage on the brisk pre-autumn eve, let me say the sound wasn't sour all night. Sound was crystal-clear, in fact, for openers Joan Jett and the Blackhearts. The Blackhearts sauntered onstage to a punk-rock rendition of "When You're A Jet," from "West Side Story," on the loudspeakers, and the band itself would later reinvent the sugary "Mary Tyler Moore Show" theme song with a punk approach. Jett disproved the theory that '80s rockers mellow with age with the raunchy title song from her latest release, "Fetish," which shocks in the '90s as the lyric "Do you want to touch me there?" did over a decade ago. The vampirishly pale Jett, looking like an S&M Annie Lennox with her newly cropped bleached blonde "do" and clad in painted-on leather pants and a vinyl halter-bra, was as sassy and sexy as ever as she bounced around the stage belting out crowd-pleasing renditions of such songs as "Cherry Bomb," "I Love Rock and Roll," "Crimson and Clover," and "I Hate Myself For Loving You." She even proved her dominatrix prowess by convincing the crowd to bark and howl as the band covered the punk-rock staple "Now I Want to Be Your Dog." Such a strong, hour-long opening made the headlining performance seem like a meek meow.