RBX170. General Specifications. General, Construction, Bolt-on. Scale Length, 34" (863.6 mm). Body, Body Materials, Basswood. Body Finish, Gloss Polyester. Yamaha RBX374 Owner's Manual (11 pages). ELECTRIC BASS. Brand: Yamaha | Category: Musical Instrument | Size: 0.49 MB. Table of Contents. View and Download Yamaha RBX374 brochure online. Controls (RBX374/375) q Pickup Balancer w Master Volume e Bass r Treble RBX Electronics. RBX Electronics. The 4-control circuit includes controls for Master Volume, Balance, and a 2-band equalizer for creating a more aggressive tone. Mar 13, 2009 - Clockwise rotation raises saddle height and counter-clockwise lowers the saddle. STRING. HEIGHT. *5th (Low B). 3.1 ± 0.2 mm. 4th (E). 3.0 ± The ergonomic body design and 3-D headstock are identifying qualities of RBX374 and RBX375 basses. The smooth tapered feel of the bolt-on neck along with The ergonomic body design and 3-D headstock are identifying qualities of RBX374 and RBX375 basses. The smooth tapered feel of the bolt-on neck along with