Origin Project | High-End DIY Speaker Plans

Aeternum Audio Origin High-End DIY Speaker Front View

Origin Speaker Crossover Component Placement

Manifesto

In a world where products change with every season, we build what remains. Aeternum Audio exists for one idea: that great sound never expires.

We chase the truth in music. Every component must have a reason. Every product must endure.

Technical Specs

Mid-Woofer	SB Acoustics SB15NBAC30-4 (5")
Tweeter	SB Acoustics SB29RDAC (1")
Efficiency	86 dB / 2.83V / 1m
Impedance	4 Ohms
Response	38Hz - 26kHz (-3dB)
Crossover	2nd Order
Dimensions	186mm (W) x 416mm (H) x 386mm (D)
Weight	12.7 kg (3mm Oak Veneer finish)

Digital Technical Package (PDF)

✓ Master Blueprints: High-resolution 2D & 3D technical drawings with exact metric dimensions.
✓ Crossover Design: Full schematics including phase-coherent alignment and component selection.
✓ BOM (Bill of Materials): Complete shopping list for drivers, capacitors, inductors, and damping materials.
✓ Assembly Guide: Step-by-step construction manual from raw wood to finished high-end speaker.

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Engineering & Performance

Sound Signature

Origin is designed for the listener who values transparency and coherence above all else. While its compact footprint suggests a modest performance, the reality is quite different; through precise cabinet loading, it reaches down to 35Hz in-room with authority and control. This isn't "hyped" bass—it's articulate, textured, and punchy.

In the listening chair, the Origin truly reveals its character: the sound doesn't come from the boxes, but hangs in the air, detached and palpable. The crossover alignment ensures a seamless integration between drivers, creating a holographic soundstage where every instrument finds its place in the room. The midrange is liquid and natural, making even the most complex recordings feel effortless—the hallmark of a speaker that simply disappears, leaving only the music.

Reference Listening:
When listening to tracks like *Keith Jarrett's 'The Köln Concert'* or *Pink Floyd's 'The Division Bell'*, the Origin reveals the subtle decay of piano notes and the precise layering of atmospheric textures that lesser designs simply blur over.

The Design Philosophy

My goal with Origin was to transcend the physical limitations of its size. By fine-tuning the cabinet resonance and selecting high-performance drivers, I achieved a timing-accurate response that feels larger than life. By meticulously optimizing the crossover slopes and component quality, I’ve minimized phase deviation in the critical 2-4kHz range. The result is a speaker that effectively "disappears," leaving you with nothing but the pure, uncolored essence of the music.

Engineering Proof