Helicore Orchestral 3/4 Bass D String: Medium

The D'Addario Helicore Orchestral 3/4 Bass D String is designed for bassists who want a dependable replacement string with a warm, focused orchestral sound and easy playability. Built with a multi-stranded steel core, this upright bass D string offers excellent bow response while remaining comfortable under the left hand. That combination makes it especially appealing for students, teachers, school programs, and advancing players who need a reliable bass string for ensemble playing, lessons, and daily practice.

Scaled to fit a 3/4 size bass with a 41 3/4 inch (1060 mm) playing length, this medium-tension D string is optimized for the majority of players. Johnson String lists nickel winding, a steel core, and a ball end, while D'Addario notes that the Orchestral line is optimized for arco use and also works well for pizzicato when a very warm, less-sustaining sound is desired. For bassists replacing a single string while keeping the familiar Helicore Orchestral feel, this D string offers stable response, practical versatility, and a clear orchestral character.

Features & Specifications

• String: Single D string.
• Instrument Fit: Designed for 3/4 size double bass.
• Playing Length: Scaled for a 41 3/4 inch (1060 mm) playing length.
• Tension: Medium tension.
• Core Material: Multi-stranded steel core.
• Winding Material: Nickel winding.
• Tone Profile: Warm tone quality with a focused orchestral character.
• Bow Response: Designed for excellent arco response.
• Playing Feel: Very easy to play under the left hand.
• Performance Balance: Damping is optimized for arco use and also supports pizzicato with a very warm, less-sustaining sound.
• String End: Ball end.
• Made in USA: Designed, engineered, and manufactured in the USA.