If you have the Monsoon Premium Sound System there are a pair of speakers under the dash panels on each side of the car (a total of eight in the cabin). There is also an amplifier up and under to the left side in the rear hatch. The tradename "Monsoon" may also appear on the radio face. This diagram will give you an idea of the various component locations.
I also believe the premium system came standard in the Triple White, Black Tie Edition and SE Models.
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In der Automobil-Scheune
'02 NBT, A/T, Moonroof, Platinum Gray, Flannel Gray Leather Interior (Currently on the slab in the morgue, possible ressurection in the offing)
'05 NB Convertible, Tip 6sd, Dark Flint Gray Edition, Garnet Red Top, Bordeaux Red Leather Interior
'01 Corvette Convertible, Magnetic Red, Light Oak Top, Light Oak Leather Interior
'96 Suburban LT 2500, 454BB, Summit White, Neutral Leather Interior
'95 Camaro Z28 Convertible, Polo Green, Black Top, Tan Leather Interior
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