NODA-95 Unibody Near Field Monitors
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NODA-95
Audiophile Quality Unibody Near Field Monitors
NODA-95 is a compact, fully 3D-printable speaker engineered to extract the best performance from a single Dayton Audio PS95-8 full-range driver. The design is built around a clear goal, to achieve the best balance of sound quality, size, and cost within strict dimensional and manufacturing constraints: a high quality unibody speaker with minimal parts needed.
The Dayton Audio PS95-8 is selected as the optimal driver for this application, offering controlled full-range response, low distortion for its class, and excellent performance relative to its size and price. Rather than crossovers or additional drivers, NODA-95 refines the enclosure itself to bring out the best of this driver.
The spherical enclosure is used deliberately for its acoustic advantages. Its geometry reduces internal standing waves, improves structural rigidity, and eliminates diffraction effects, resulting in a clean, open sound with smooth dispersion. Internal volume, port tuning, driver placement, and damping is optimised specifically for this driver and enclosure format. The system is tuned at 80Hz as a bass-reflex design with a net internal volume of 3.5 liters and a precisely dimensioned and chamfered port, delivering controlled low-frequency extension without boom or strain.
Internal acoustic damping is applied strategically to suppress reflections and midrange coloration while preserving port efficiency. Structural performance is equally considered. The use of fiber-reinforced filament combined with a gyroid infill pattern maximizes stiffness and intrinsic damping. This approach eliminates the need for additional mass-loading techniques such as sand or gypsum, resulting in a clean, efficient, and fully printable structure.
The enclosure is designed to be printed in PETG-CF (carbon fiber reinforced PETG), selected specifically for its inherent vibration damping. This material choice reduces enclosure resonance compared to standard filaments, ensuring that all energy is translated into sound.
Clearances, geometry, and material are all accounted for to ensure predictable acoustic performance and reliable printing. The result is a compact, robust speaker that delivers the full potential of the PS95-8, pushed to the practical limits of a small, single-driver system.
As a nearfield monitor it delivers near holographic imaging, clarity and even bass that kicks beyond it's driver size. These are perfect for a set of surround monitors or a cool desktop setup, pair them with a sub and never wish for more!
User Notes
Use the linked heat-inserts in the holes for driver mounting with the provided machine screws.
The stand is a two part design, use little nibs of filament in the provided holes for alignment and glue the surfaces with a drop of CA.
This design uses Dayton Audio PS95-8 drivers, widely known for exemplary price-perfomance and ease of integration.
Dayton Audio - PS95-8 3-1/2" Point Source Full-Range Driver 8 Ohm
This driver is used cabled directly without filter, this speaker is designed as such and the high impendance driver works well with all low power amplifiers. Run the cable through the provided hole and plug it airtight with filler (this is important). The hole is designed for 2,5mm cable.
For optimal sound quality a 53x10cm sheet of acoustic dampening material is placed as a ring along the speaker axis pictured below. Be sure the driver and path to the bass port remain unobstructed. For more bass at a loss of sound quality filler can be omitted, however this is not adviced.
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License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
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