Atom™ Acoustic Engine
Designed to reproduce the Atom Speaker or integrate into compact loudspeaker projects — this is not a standalone speaker.
Small Loudspeaker. Full-Range Performance. Precision Engineered.
The Atom™ Acoustic Engine brings the engineering found in the complete Atom Speaker to builders and enthusiasts seeking exceptional performance from compact loudspeaker systems.
Combining a precision constant-directivity horn, high-performance compression driver, and the Shinjitsu Audio™ Continuum Crossover Architecture, the Atom™ Acoustic Engine delivers effortless dynamics, exceptional vocal realism, and remarkably low distortion while integrating seamlessly with the Mark Audio CHR70 full-range driver.
Every Acoustic Engine is fully assembled, wired, tested, and ready for installation into a properly constructed enclosure.
Designed As A Complete Acoustic System
The Atom™ Acoustic Engine is considerably more than a horn and compression driver. Every component has been engineered to function as a complete acoustic system with the supplied crossover network and Continuum tuning architecture.
Each Atom™ Acoustic Engine includes:
- B&C ME20 Constant Directivity Horn
- Beyma CD171 FE/PK Compression Driver
- Shinjitsu Audio™ Continuum Crossover Architecture
- Premium Air-Core Inductors
- Polypropylene Film Capacitors
- Non-Inductive Precision Resistors
- Integrated Precision L-Pad Attenuation Network
- Heavy Gauge Oxygen-Free Copper Internal Wiring
- Gold-Plated Five-Way Binding Posts
- Furniture-Grade Baltic Birch Internal Structure
- Premium Hardwood Plinth
Designed specifically for the Atom loudspeaker platform while remaining adaptable to other compact loudspeaker projects.
Specifications
| Product | Atom™ Acoustic Engine |
| System Type | Passive Constant-Directivity Mid / High Frequency Compression Engine |
| Frequency Response | Approximately 3 kHz – 20 kHz (Application Dependent) |
| Recommended Integration | Mark Audio CHR70 Full-Range Driver |
| Horn | B&C ME20 Constant Directivity |
| Coverage Pattern | 90° Horizontal × 60° Vertical |
| Compression Driver | Beyma CD171 FE/PK |
| Diaphragm Material | Polymer |
| Voice Coil | 1.7 in (44 mm) |
| Nominal Impedance | 8 Ohms |
| Sensitivity | Approximately 107 dB |
| Crossover Architecture | Shinjitsu Audio™ Continuum Crossover |
| Crossover Topology | Optimized Acoustic Alignment |
| Level Matching | Integrated Precision L-Pad Attenuation Network |
| Components | Air-Core Inductors • Polypropylene Film Capacitors • Non-Inductive Precision Resistors |
| Input Connection | Gold-Plated Five-Way Binding Posts |
| Internal Wiring | Heavy Gauge Oxygen-Free Copper |
| Internal Structure | Furniture-Grade Baltic Birch |
| Plinth Material | Choice of Premium Hardwood Species (See Available Finishes) |
| Finish | Satin Black with Natural Hardwood Plinth |
| Operation | Passive — No External Power Required |
| Application | Atom Speaker • Builder Series • Compact DIY Loudspeaker Projects |
| Designed & Assembled | Arizona, USA |
Acoustic Performance
- Controlled-directivity horn loading for improved imaging.
- Exceptional vocal intelligibility and transient response.
- Wide listening window with consistent tonal balance.
- Extremely low distortion throughout the operating range.
- Effortless dynamics from compact loudspeaker systems.
- Engineered specifically for seamless integration with the Mark Audio CHR70.
- Optimized for both tube and solid-state amplification.
Available Hardwood Species
- Morado (Pau Ferro)
- Black Limba
- Canarywood
- Ambrosia Maple
- Cherry
- Walnut
- Red Oak
- White Oak
- Brazilian Hickory
- Baltic Birch
Available hardwood species may vary based upon current inventory.
Designed, assembled, tested, and individually inspected by Shinjitsu Audio.
The Atom™ Acoustic Engine incorporates the same engineering philosophy found throughout every Shinjitsu Audio loudspeaker: controlled directivity, seamless integration, natural tonal balance, and uncompromising musical realism in a remarkably compact format.
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