Ampeg Dan Armstrong Lucite Views
In 1969 the Horizontal Basses were replaced by the Dan Armstrong-designed and -built see-through guitars and basses (aka Plexi,[2] Lucite or crystal named after various brand names of acrylic glass). The guitars incorporated snap-in replaceable pickups to change the sound, and the short-scale basses used two stacked coils with a pan pot to gain a very wide range of tones. The transparent lucite bodies were Armstrong's original idea and contributed to incredibly long sustain but were very heavy. Ampeg's production of the see-through instruments ended in 1971 due to financial disagreements between Armstrong and Ampeg over amplifier designs.
In 1968 the Ampeg Company of Linden, New Jersey hired Dan Armstrong as a consultant to improve their Grammer line of guitars. He designed a new line of guitars and basses that were constructed of clear plexiglass. Calling it one of his favorite guitars ever manufactured, Dave Grohl owns four T"Lucite Ampegsr" that are all tuned differently for various Foo Fighter songs and are featured in three of the Foo Fightersp' most popular videos: =ld"All My Life,prd" ld"The Onesrd" and hld"Times Like These.ord"