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 During the summer of '94, I performed my first installation in a pickup. The vehicle was a 1989 Chevrolet Silverado with a standard cab. The owner wanted clean sound without overpowering bass. He also wanted to keep the factory radio/cassette. The owner purchsed the equipment he wanted after numerous discussions.
The system starts with the factory head unit and a Sony 10-disk changer. The speaker outputs were converted to RCA via a Soundquest 4 channel converter. These outputs connected to a MTX 3-way active crossover. High and passive outputs went to an Alpine 4 channel amplifier. The high pass outputs ran a pair of MB Quart Stealth 4" mid/tweet combos in the factory dash locations. The passive (100hz to 20khz +/-) outputs ran a pair of MB Quart KNS series 5.25" mid/tweet combo located in the doors. The crossovers sub outputs initially went to a Sherwood 240 watt amplifier and a pair of MTX Terminator 8" subs, but, this was changed to a Earthquake 2x75 watt amplifier and a pair of JL Audio 8w6 subs. I built the sub box to run the full length of the truck behind the back seats. Between the subs was the area used for the amplifiers and crossover. The box was built to offer full use of the seat in the farthest back position. The end result had a nice sound to it with only a slight seperation issue resulting from the off-axis location of the Quart 4" drivers in the dash. The above picture was taken prior to the amp/sub replacement (speaker wires were hidden via a factory panel).
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