Lake's bass looks to have been a set neck Ripper. At least it has a painted neck like most of the ebony board ones did. Must have been a custom from Gibson?
From the GP interview:
Still another change for Greg is to Gibson after many years of keeping company with the Fender Jazz Bass. A new prototype model distributed by Gibson called "The Ripper," Lake's instrument embodies more powerful pickups than the standard bass humbuckings, as well as a mid-range choke to wring greaters highs from the instrument. Greg feels it is the most "reliable and accurate" instrument on the market. He likes a bass that is electronically well-designed with an absolutely precise neck in perfect tune all the way up to the 22nd fret of the low E string. He also prefers for nothing to be heard resonating in sympathy with a particular note; that is, the bottom E string is of the same intensity as the high G. Lake feels the main feature of his instrument is its capacity to produce four entirely different sounds. With a front and back pickup producing two different signals, the quartet of variations is created by: (1) putting the two pickups out-of-phase, (2) inserting the mid-range choke, (3) shutting off the back pickup, and (4) turning off the front pickup.
Greg powers his guitar with Crown International Amps [1718 Mishawak Road, Elk Hart, IN 46514] which run through a separate EQ circuit. Sound comes from two or three (it varies) cabinets with JBL speakers which Lake describes as a "very flat and sensitive reproduction of what the strings are putting out." Two stacks of four JBL's (two mid-range, two bass) are powered by the two Crown stereo amps and produce a total of 2,000 watts. "It's a hi-fi system, a huge hi-fi system," Lake explains, "and it reproduces the tops, the highs, the mid-range, and the lows." The Crowns are specially built high-powered units tagged DC-1000 which drive the JBL's as well as a set of large Lansing horns. A crossover takes the bass signals, and at about 400 cycles pushes them through the horns.
