Spirocore 1/2 Bass A String: Medium

he Spirocore 1/2 Bass String Set: Medium is a trusted choice for double bass players who want a responsive, long-lasting set with the flexibility to handle both arco and pizzicato playing. Johnson String describes Spirocore strings as built with a flexible multiwire spiral rope core that offers a longer period of musical vibration while significantly reducing inertia. That design helps the strings feel lively under the hand and quick to respond, making them a strong option for advancing students, committed amateurs, and professional players alike.

Part of the Thomastik-Infeld orchestral bass string line, this medium-gauge 1/2 size set is known for its focused tone, excellent playability, and broad stylistic usefulness. Thomastik notes that the medium set is intended for instruments with a vibrating string length around 110.0 cm, and that the set is usable from 106.0 cm to 110.0 cm. For bassists seeking a premium upright bass string set with strong projection, clean bow response, and dependable durability, Spirocore remains one of the most established options in the category.

Features & Specifications

• Instrument Fit: Sized for 1/2 double bass.
• String Type: Full string set.
• Gauge: Medium gauge.
• Core Material: Steel core with flexible multiwire spiral rope construction.
• Winding Material: Chrome winding.
• String End: Ball end.
• Tone & Vibration: Designed for a longer period of musical vibration with reduced inertia.
• Response: Equally effective for arco and pizzicato playing, with high responsiveness.
• Durability: Built for long-lasting performance.
• Vibrating String Length: Thomastik lists 110.0 cm / 43.3 inches.
• Usable Range: Usable from 106.0 cm / 41.7 inches up to 110.0 cm / 43.3 inches.
• Brand: Spirocore by Thomastik-Infeld.