Thomastik STRINGS CONTRABASSES SPIROCORE SPIRAL CORE SET S43

A Reference Designed for Solo Repertoire and the Demands of Modern Playing

In the world of double bass, certain strings become standards because they meet the practical needs of musicians: tuning stability, consistent response across the entire range, and the ability to "carry" both in concert halls and amplified settings. This solo tuning set follows this logic: offering a comfortable playing sensation and generous vibration while maintaining controlled tension. The multi-filament spiral core is at the heart of this identity, as it enables efficient vibration and a sound that remains lively even in soft dynamics.

For Whom and in Which Styles?

This set is primarily intended for double bassists who play in solo tuning (usually tuned a whole step above orchestral tuning), whether for classical repertoire (concertos, sonatas, virtuosic pieces) or contexts where increased presence in the upper register is desired. Thanks to its design focused on "response + sustain," it is also suitable for more cross-genre approaches: singing pizzicato, exposed melodic lines, or ensemble playing where articulation must remain clear. Recommended level: intermediate to advanced, as solo tuning requires specific landmarks (positioning, intonation, and tension management) and refined right-hand technique, especially with the bow.

Sound Characteristics

The tonal personality of this set comes directly from its flexible multi-filament spiral core. This construction promotes a long vibration period : the note "opens" quickly and maintains a musical sustain, useful in pizzicato to make the line sing, and valuable with the bow to support clean legato. The perceived low inertia also helps achieve a clearer attack: the bow grips with greater control while retaining a flexible feel that facilitates dynamics and string crossings. At medium tension, the balance aims for a relevant compromise: enough hold for projection but without excessive stiffness, contributing to left-hand comfort and more stable intonation in exposed passages.

Recommended Compatible Accessories

To get the most out of this set when bowing, a rosin suited to your bow type and environment (humidity, temperature) helps stabilize grip and sound consistency. A chromatic tuner is also very useful in solo tuning to secure tuning references and monitor stability over time. Finally, a soft cloth after playing helps limit residue buildup (rosin, sweat) and preserves the tactile sensation under the fingers.

Technical specifications

Format	4/4	Nbr of strings	4
Tension	Medium	Material	Spiral core
Type of cord attachment	Loop end	Special feature	Long/Medium Scale
Category	double bass	Color	Grey

Use	bow and pizzicato	E	34.0 kg (75.0 lbs)
Compatible scale length	up to 1100 mm (43.3")	B	34.0 kg (75.0 lbs)
Tuning	solo	F-sharp	34.0 kg (75.0 lbs)
Strings included	A, E, B, F-sharp	C-sharp	35.0 kg (77.2 lbs)
Core	flexible with multiple spiral-wound wires	Total set tension (4 strings A, E, B, F-sharp)	133.0 kg (293.3 lbs)
Design objective	long musical vibration and low inertia	4-string set	A, E, B, F-sharp
A	31.0 kg (68.3 lbs)