Thomastik STRINGS VIOLIN SPIROCORE SPIRAL CORE MEDIUM S15
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Information
Information
Manufacturer Information
Thomastik
https://www.thomastik-infeld.com
info@thomastik-infeld.com
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Safety manager:
GEWA music GmbH
Email: info@gewamusic.com
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A modern design focused on responsiveness
Strings with a spiral core represent an evolution in "high response" strings: the goal is to achieve a string that is more stable in vibration, with a generous sustain time, while maintaining a clear attack. This multi-strand architecture favors flexibility and control, particularly appreciated when seeking nuanced playing.
For whom and in which styles?
This set is aimed at advanced beginners to intermediate violinists who want to gain bowing comfort and left-hand fluidity. It is well suited for classical music (legato work, cantabile), chamber music, and repertoires where stable and singing note sustain is expected.
Tone
Thanks to the multi-strand construction and the spiral core, the string offers a quick response with longer vibration, which enhances the sensation of "carry" and sound continuity. The Aluminum Wound E tends to provide a rounder high register with better-controlled brilliance, useful to avoid an overly sharp register depending on the instrument and bow.
Technical specifications
| Format | 4/4 |
| Tension | Medium |
| Type of cord attachment | Ball end |
| Category | Violine |
| Nbr of strings | 4 |
| Set | 4/4 |
| Type | multi-strand string |
| Core | spiral core (longer vibration, less inertia) |
| References | S9 / S10 / S12 / S13 |
| Soft | 21.3 kp / 46.9 lbs |
| Medium | 23.1 kp / 50.8 lbs |
| Strong | 25 kp / 55.0 lbs |
Questions frequently asked
Are Thomastik Spirocore S15 strings suitable for a 4/4 violin?
This set of 4 strings is designed for a 4/4 violin and features a medium tension of 23.1 kp, equivalent to 50.8 lbs.
What sound does the aluminium wound E string produce?
The aluminium wound E string promotes a rounder high pitch and better-controlled brightness. This construction can limit an overly sharp register depending on the instrument and bow.
What is special about the Spirocore spiral core?
The multi-strand spiral core reduces inertia and supports longer vibrations. The response remains quick, with a clear attack and stable note sustain. This flexibility provides control for both bowing and left-hand technique.
Are these strings suitable for classical music?
This medium configuration is recommended for classical and chamber music, particularly for legato and cantabile playing.
What type of tailpiece-end attachment is provided with this string set?
Each string is equipped with a ball-end attachment, consistent with the specifications given for references S9, S10, S12, and S13.



