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FDM4 Loudspeakers

The FDM4 is our most accessible 3D printed loudspeaker yet.

We literally crammed everything that we learned from the FDM5s and FDMGeos into this unsuspecting package.

If you're ready to bring wide sound stage and deep bass to a desktop setup, these speakers are just right for you.

Community FDM4 Builds

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FDM4 Loudspeakers in Polymaker Wine Red and White

Built by:
ZombieHedgehog_
Social media:
@ZombieHedgehog_
No items found.

FDM4 Loudspeakers in White and Black

Built by:
Iwan
Broodryk
Social media:
@depositionsound
American Flag
Our kits and crossovers are designed, tested, and assembled in the USA.

Crossover Design

FDM4 Crossover
PCBs built by MTG Designs
Heavy gauge air core inductors, precision audio grade resistors, high purity metallized polypropylene capacitors, precisely machined and soldered PCB

Smooth 12dB, 2nd order filters placed at 4 kHz

Tuned to reduce listening fatigue, emphasize low end extension, and express top end detail.

Compact and Powerful 4" Woofer

FDM4 Woofer
Treated paper cone

Efficient motor design despite its small size

Excellent power handling for deep rich bass

"Itty Bitty" Dome Tweeter

FDM4 Tweeter
Compact neodymium motor design with ferrofluid damping

When in concert with our wave guide, this tweeter sings on axis and way off axis

Cabinet Design 🐍

FDM4 Cabinet
A massive 35 inch (89 cm) serpentine port is merged with the cabinet side walls and rear baffle, adding structural stiffness and extended bass

The unique shape is a standout feature, sure to start a conversation about 3D printing and audio

Technical Specifications

FDM4 Frequency Response

FDM4 Frequency Response

FDM4 Impedance

FDM4 Impedance
Note: Measurement mic placed 39 inches (1.0 m) away from front baffle, on axis with the tweeter, atop a 36 inch (0.9 m) speaker stand, in a small bedroom. Frequency response plot is truncated below 200 Hz as this range tends to be room-dependent.

Model

FDM4

Design

2-Way Bass Reflex
(Semi-Transmission Line)

Woofer

4" Treated Paper Woofer

Tweeter

5/8" Neodymium Dome Tweeter

Crossover Frequency

4 kHz

Frequency Response

60 Hz - 20 kHz (±5 dB)  

Box Tuning Frequency

40 Hz

Power Range

30-40 W

Nominal Impedance

10 Ω

Sensitivity

82 dB

Weight per Speaker

4.1 lbs

Dimensions (H x W x D)

8.50" x 6.00" x 9.00"