Spirocore Solo 3/4 Bass B String: Medium

The Spirocore Solo 3/4 Bass B String: Medium is a premium replacement string for double bass players who need extended low-range capability in a solo-tuned setup. As part of Thomastik-Infeld's Spirocore Solo line, this 3/4 size low B string is built for players who want the familiar Spirocore combination of quick response, focused tone, and dependable durability while working with an added fifth string. Thomastik lists the 3/4 Solo series as available in medium gauge only and designed for basses with a vibrating string length of 104.0 cm, with a usable range from 103.0 cm to 106.0 cm.

This model is especially appealing for bassists who want a solo bass string with clear projection and stable feel across an extended-range setup. Thomastik's published technical details identify the matching 3/4 Solo low B as model 3886,3, built with a spiral core, chrome winding, an aluminum ball, and a crimp ball end. That construction supports the lively, flexible character associated with the Spirocore family while giving players a practical low B option for solo literature, recital work, and advanced study on 3/4 bass. This use-case phrasing is an inference based on the Solo line's construction and extended-range format.

Features & Specifications

• Instrument Fit: Sized for 3/4 double bass.
• String: Low B string, listed as H1 / Si1 / III.
• Gauge: Medium gauge.
• Manufacturer Model: Thomastik-Infeld 3886,3.
• Brand: Spirocore Solo by Thomastik-Infeld.
• Core Material: Spiral core.
• Winding Material: Chrome wound.
• Ball Material: Aluminum ball.
• Tailpiece End: Crimp ball end.
• Tension Value: 33.0 kg / 72.8 lb.
• Vibrating String Length: 104.0 cm / 40.9 inches.
• Usable Range: Usable from 103.0 cm / 40.6 inches up to 106.0 cm / 41.7 inches.