D'ADDARIO STRING SET FOR DOUBLE BASS ORCHESTRA HELICORE 3/4 FRET FRETBOARD HEAVY TENSION
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D'addario And Co
https://www.daddario.com
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D'Addario Europe Ltd
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An "orchestral" benchmark in the Helicore range
The D'Addario Helicore Orchestral series is designed to meet the demands of orchestral double bassists: a rich sound, immediate response to the bow, and comfortable playability for daily use. Thanks to its multi-filament steel core design, this set aims for a balance between warmth, clarity, and stability, while offering a more accessible feel under the left hand compared to some very stiff high-tension strings.
Intended use and player level
This set is particularly suited for intermediate to advanced double bassists seeking heavy tension to gain projection and presence within a section. It excels in classical, orchestral, chamber music repertoire, and any situation where the bow needs to "speak" quickly and cleanly. In pizzicato, it delivers a warm sound with a lighter sustain, appreciated for maintaining definition without dragging.
Sound characteristics
The Helicore Orchestral strings are designed to produce a warm and clear tone, with a quick response to the bow and good dynamic control. The multi-filament steel core contributes to precise attack and a flexible feel that facilitates intonation and shifting. In Heavy tension, the string offers increased resistance and tends to enhance projection and stability, helping to hold its place in an ensemble while maintaining a warm color.
Recommended compatible accessories
To preserve longevity and tuning stability, the use of a rosin suitable for double bass and a microfiber cloth to wipe the strings after playing is highly recommended. If you change gauge or tension, a bridge check and adjustment of the curvature (position, verticality) after installation can also help maintain optimal setup.
Technical specifications
| Format | 3/4 |
| Tension | Hard |
| Type of cord attachment | Ball end |
| Category | double bass |
| Nbr of strings | 4 |
| Instrument | double bass |
| Compatibility | 3/4 |
| Compatible neck length | 1060 mm (41 3/4") |
| Type | orchestral double bass string set |
| Core | multi-filament steel |
| Character | warm and clear tone |
| Optimization | bowing |
| Pizzicato | very warm sound, lighter sustain |
| Playability | core construction promotes ease under the left hand |
| Manufactured in | USA |
| Quality control | subjected to rigorous inspections |
Questions frequently asked
Are these strings compatible with a 3/4 double bass?
The set is designed for 3/4 size double basses, with a neck length compatible with 1060 mm (41 3/4"). It includes four ball-end strings.
What is the gauge for the D'Addario Helicore Orchestral 3/4 Heavy?
The Heavy gauge, also indicated as hard, offers more resistance under the fingers. It aims to enhance projection and stability within an orchestral section.
What sound is produced with the bow using this set?
The multi-strand steel core promotes quick response to the bow and precise attack. The sound is described as warm and clear, with dynamic control suitable for orchestral repertoire. The core construction also contributes to a feel that is more accessible under the left hand.
Are these strings suitable for pizzicato?
When played pizzicato, this set delivers a very warm tone with lighter sustain to maintain clarity.
What accessories should be used with Helicore double bass strings?
Rosin suitable for double bass and a microfiber cloth are recommended for maintenance. After installation, checking the position and verticality of the bridge can help preserve the setup.



