Description
17-Inch Professional Three-Reed Shruti Box, 440 Hz
Create a broad, layered acoustic drone with the RagaLoom 17-inch Professional Three-Reed Shruti Box. Built in teak wood and tuned to A=440 Hz, this expanded model provides 36 selectable notes from C to B across three octaves—far more tonal flexibility than a standard single-row shruti box.
Three octaves for a deeper, more flexible drone
Three separate reed banks allow singers, teachers and performing musicians to choose notes across low, middle and upper registers. Open a tonic, fifth or other complementary tones to build the foundation that suits your voice, raga, ensemble or contemplative practice.
Key features
- Three complete sets of reeds
- 36 selectable controls from C to B across three octaves
- Tuned to the international A=440 Hz concert standard
- Large 17-inch teak-wood cabinet for a full acoustic response
- Clearly labeled white note controls
- Traditional hand-operated multi-fold bellows
- Brass carrying handle, wooden closures and protective metal corners
- Protective gig bag included
- No electricity or batteries required
Ideal for
This professional shruti box is designed for advanced vocal practice, Indian classical music instruction, kirtan, bhajan, mantra chanting, sound meditation and musicians who need a wider tonal palette. Its three-octave range also makes it useful in shared studios where performers work in different registers.
Specifications
| Instrument | Professional acoustic shruti box / surpeti |
|---|---|
| Reed configuration | Three reed sets |
| Range | 36 notes, C to B across three octaves |
| Tuning reference | A=440 Hz |
| Dimensions | Approximately 17 × 14 × 3 in (43 × 36 × 8 cm) |
| Material | Teak wood |
| Operation | Manual bellows; fully acoustic |
| Included | Protective gig bag |
How to use
Release the controls for your chosen notes, open the bellows and pump with a slow, even motion. Begin with one tonic note, then add a fifth or octave as desired. Closing unused controls keeps the drone focused and balanced.
Care instructions
Keep the shruti box in its protective bag when not in use. Store it away from direct sunlight, excessive heat and high humidity. Move the bellows gently, avoid placing weight on the cabinet and clean the wooden exterior with a soft, dry cloth.
Frequently asked questions
How is this different from a 13-note shruti box?
This model offers three C-to-B rows for 36 notes across three octaves, providing a wider register and more options for layered drones.
Does it require electricity?
No. The sound is produced acoustically by its reeds and hand-operated bellows.
What does A=440 Hz mean?
The reeds use A=440 Hz as their tuning reference, matching the international concert-pitch standard commonly used with modern instruments.
Is a carrying bag included?
Yes. A protective gig bag is included for storage and transportation.
Each RagaLoom shruti box is handcrafted from natural wood. Grain, finish and small construction details may vary slightly, making every instrument unique.







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