Modulus 12-String Bass

The Modulus custom shop has only produced a handful of 12-string basses, and most of those were doubled 6-strings. Here is the description of this bass as told by it's owner, who prefers to remain anonymous.

"Rich Lasner (then Modulus president, now at Vox Guitars), talked about it briefly on your site. The instrument was built during the years when Geoff Gould, founder of Modulus, was president, but most of the same crew were there when Rich was running the place. Geoff is a close friend of mine and I know Rich fairly well too."

"I grew up in Iowa and my brother and I really loved Cheap Trick. My main bass influence was Greg Lake and I’m a huge fan of Modulus instruments. This bass is sort of the three-way collision of all those elements – 12-string thru-body with 35” scale (the treble strings sound amazing). The body is shaped like a Gibson Ripper which was my dream bass when I first started playing and which Greg Lake was an endorser of in the 70’s. The body carving is very Ripper like with wide bevels, but I don’t like the body laminations to show, so the super-curly top is a double-thick book match. The thick maple over mahogany body is very reminiscent of Tom Petersson’s original QuadBass and was completely intentional. Geoff had worked with Tom before (he built him that 18-string bass that ended up in Allen Woody’s collection)."

"Modulus necks are built-up in a mold from sheets of graphite fabric. It’s very expensive to make a custom mold, especially for a thru-body like this, but using the 5-string thru-body mold was just perfect. (I had a 5-string from that same mold). They had to extend the headstock to accommodate all the tuners. I provided them a Ripper for the body shape, but the body style was modified to match the heel of the existing neck mold. Because Modulus necks don’t have a truss rod and there was obviously going to be a lot of tension here, the neck is made of a stiffer graphite than regular production Modulus instruments (using this different material was standard practice at Modulus when a non-standard instrument is being made)."

"Fabrication and body carving was done by Joe Perman. The final set up was done by Rich Hoeg. The block side inlays were done by Larry Robinson. Geoff Gould was fantastic at making the impossible happen even if he thought this was completely kooky."

Modulus 18-String Bass

Modulus made this 18-string bass for Tom Petersson in the early 1980's. It was a TBX neck-through model with a custom Stars Guitars brass bridge. According to Modulus founder Geoff Gould, it is short 30½" scale. The neck is about 2¼" wide at the nut and about 3¾" wide at the 24th fret. This bass was built about the same time that Petersson left Cheap Trick. Petersson reportedly didn't like it and it was subsequently shipped back to Modulus. The late Allan Woody contacted Modulus about that time and asked if an 18-string “just like the one you made for Tom Petersson” could be built for him. When he was told the actual Petersson bass was available he became the new owner. It was still with him at the time of his death.

This bass is now housed at the Allman Brothers Band Museum at The Big House in Macon, Georgia.