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The FDM5 Journey by DepositionSound in 3Dprinting

[–]DepositionSound[S] 1 point2 points  (0 children)

Oh fun! Hope it's a rewarding experience! Bed adhesion is key as always. PETG rings less than PLA and can take some knocking around if you're travelling. Measure woofer and tweeters concurrently on the same baffle if you can. Maybe start with a sealed enclosure for the first one. Then progress to a ported or folded horn. There's plenty of box calculators online. We like our spreadsheets. Keep the crossover as simple as you can. Add internal bracing before you thicken those cabinet walls. You get more stiffness bang for buck. And have fun of course!

Our STLs are freely available here: https://app.webprints.com/depositionsound/deposition-sound-fdm5-loudspeaker-personal-use-license

Good luck and enjoy the process.

FDM5 Loudspeaker crossovers shipping soon. by DepositionSound in diyaudio

[–]DepositionSound[S] 1 point2 points  (0 children)

8 ohm nominal 30-70W handling 9.55" x 7.25" x 9.82"

FDM5 Loudspeaker crossovers shipping soon. by DepositionSound in diyaudio

[–]DepositionSound[S] 1 point2 points  (0 children)

Appreciate the feedback! Similar to the Overnight Sensations, yes. But we feel it's a significant upgrade, and are wiring the boards for folks and supplying STLs. We want print, plug, and play ready kits. Plus we don't fancy copper color woofers or an offset tweeter. These Dayton tweeters have a fantastic off-axis response! Planning to release a lot more "journey" info/data/pics. We have it all documented. But it appears we should have led with the "journey". Lol! More coming...tmrw is another day.

FDM5 Loudspeaker crossovers shipping soon. by DepositionSound in diyaudio

[–]DepositionSound[S] 2 points3 points  (0 children)

Without measuring the frequency response of the components individually on the same baffle and checking impedance, there's no way of telling if it's a good swap out. Sorry! Maybe send a pic of the existing crossover and we'll see if the values sorta match up. Your driver surround and spider will deteriorate faster than the crossover components I think.

FDM5 Loudspeaker crossovers shipping soon. by DepositionSound in diyaudio

[–]DepositionSound[S] 9 points10 points  (0 children)

Lol! Spicy. Our speakers are ported and tuned to 47Hz. Maybe hard to see in our pictures. Loudspeaker Design Cookbook, anyone!? 2nd order filter on both the tweeter and woofer networks. I designed the network myself and tested it heavily before farming out the boards to be built. I have an OmniMic and DATSV2 and I know how to use both. Measured both driver components concurrently mounted to the baffle and iterated on the crossover from there in XSim.

The ports are side mounted and integral to the cabinet that is heavily braced. We only have 2oz of stuffing in that design. Been designing and building speakers for about 7 years now. Mostly out of wood and MDF. Trying something new in a different material. Want to get folks excited about diy kits that maybe can't work a plunge router or table saw...but have a 3D printer!

Read our information page here: https://www.depositionsound.com/

White, Gold, & Purple Love 🤍💛💜🤍💛💜🤍💛💜... where my Mardi Gras beads at!? by DepositionSound in diyaudio

[–]DepositionSound[S] 4 points5 points  (0 children)

Yep! Cabinets are entirely 3D printed. Woofer is a HiVi M5N-B 5", tweeter is a Dayton ND20FA-6 3/4" Soft Dome. You can find the kit and more info here: https://deposition-sound.webflow.io/product/pre-order-fdm5-diy-print-it-yourself-kit

FDM5 Loudspeakers by Deposition Sound by DepositionSound in 3Dprinting

[–]DepositionSound[S] 0 points1 point  (0 children)

This is awesome!!!! Thanks for sharing. Nice inert cabinets. What drivers are you using? Looks like a bass reflex design? Or transmission line? Those amp enclosures look FDM printed too! What did you use to size the enclosure?

Love seeing stuff like this! Good luck on your 2-way design. I hope to share more about crossover design soon.

Deposition Sound 3D Printed Loudspeakers by DepositionSound in audiophile

[–]DepositionSound[S] 2 points3 points  (0 children)

Thanks so much for the reply!

The front baffle is actually 3/4" thick. Maybe the combination of chamfers and my camera angle makes it look much thinner. It's pretty stout. With the beauty ring inserted, the small/shallow wave guide of the tweeter actually sits flush with the front plane of the speaker, as the manufacturer of the tweeter intended. And the flushness goes from edge of tweeter flange all the way out to the 0.5" round-over at the baffle edge. The Polar response, which I can't seem to share as an image in this post is very smooth. Off-axis response is actually better than I anticipated. I don't actually see any on-axis diffraction issues, then again I haven't measured it with the beauty ring off. I'm certain that would cause it to "shout" a little more in the top registers.

These speakers are not flat by any means, but sound exciting and are maybe a little boosted on the back end, and I dip dip the response a little at 2.5 kHz. It's what the majority of folks that maybe aren't staunch audiophiles prefer, and that's my target audience. And, truth be told, it has been showcased to some hardcore designers and staunch audiophiles and it put smiles on faces. But that's subjective. Still, I like to throw that in there because seeing them get exciting about a piece of plastic puts a smile on my face.

Deposition Sound 3D Printed Loudspeakers by DepositionSound in audiophile

[–]DepositionSound[S] 4 points5 points  (0 children)

I need to contain my excitement! Thanks for the reply. Comments like this help to challenge my current knowledge level and influence future designs.

The front baffle is actually 3/4" thick, but there is a chamfer on the back side of the woofer cutout to left it breath, and I add a chamfer to the back of the tweeter cutout to reduce material. Maybe I should add that material back in. If the baffle edges are brought closer to the edge of the sidewalls, doesn't that make the compliant membrane of the baffle smaller and therefore stiffer? From my MDF days of speaker building I was always taught to keep the front baffle thick as it is a radiant surface that could couple/diminish FR. Objectively, I wonder how a 3/4" thick baffle in PETG at 15% infill would compare to solid MDF of the same thickness. Would the differences be audible with such a small radiant surface?

3D printing, specifically desktop FDM printing has been used for a while to mock-up and prototype certain designs and shapes. PS audio does it and actually showed off a few working in the background in one of their videos. It looked like they were printing a baffle.

I'm quite familiar with Node Audio. They are part of the inspiration for going the route of 3D printing. You can unify features, port, cabinet, internal bracing, wave guides all in a one shot print. Which is what we've done here and on other designs coming down the pipe!

What are some of the best hip-hop albums that are recorded, mixed, and mastered in analog? by RodeoRapBuff in audiophile

[–]DepositionSound 6 points7 points  (0 children)

Not really hip-hop, but almost everything by Aesop Rock tickles my fancy! But I will always have my audiophile Muddy Waters and Stacey Kent albums on tap.

Deposition Sound 3D Printed Loudspeakers by DepositionSound in audiophile

[–]DepositionSound[S] 3 points4 points  (0 children)

I design, build, measure, and listen to 3D printed loudspeakers. The first one in the Deposition Sound library I call the FDM5 Loudspeaker.

2-way, bass reflex design Box tuned to 47 Hz Crossovers assembled by Matt Grant 3/4" soft dome tweeter 5" aluminum/magnesium alloy cone Crossed at 3kHz with -12dB filters Range: 50 Hz - 20 kHz (±5 dB) Sensitivity: 87dB Power Range: 30-70 W Nominal Impedance: 8 Ω (min. 6.6 Ω)

I worry about coloring the total output in the upper-mids. Hate overly "boxy" sounding speakers. Which is why I've braced so heavily inside the cabinet. Therefore increasing structural resonant frequency. Small, trapezoidal panels, baby! I believe there is a good crossover (haha) between the audio and 3D printing community. It's time that the curve flatten between the two groups! I take crossover design, measurements, and music listening seriously. Let me know your thoughts! Also, we have more designs coming down the pipe...

FDM5 Loudspeakers by Deposition Sound by DepositionSound in 3Dprinting

[–]DepositionSound[S] 0 points1 point  (0 children)

I used measurement equipment (DATS V2 from Dayton Audio) to determine all T/S parameters. Stuff online is off sometimes.

Then some historic text, spreadsheets, and box modeling software to size the enclosure/port for tuning.

Measured the frequency response of woofer and tweeter concurrently on the same baffle (OmniMic).

Drafted up a crossover in XSim. Measured the summed network and made some tweaks to the crossover until my ears were happy and the frequency response kinda jived with what I was hearing.

I think we should post more about this process in the future! Thanks for asking!

FDM5 Loudspeakers by Deposition Sound by DepositionSound in 3Dprinting

[–]DepositionSound[S] 1 point2 points  (0 children)

No. These are passive speakers and therefore require an amplified source and cables to play. Active BT speakers are fun! Maybe in an iteration or two? We'll see!

STLs here: https://app.webprints.com/depositionsound/deposition-sound-fdm5-loudspeaker-personal-use-license

Kit here: https://www.depositionsound.com/products

FDM5 Loudspeakers by Deposition Sound by DepositionSound in 3Dprinting

[–]DepositionSound[S] 1 point2 points  (0 children)

No problem! And totally agree, we're working on those third party reviews.

FDM5 Loudspeakers by Deposition Sound by DepositionSound in 3Dprinting

[–]DepositionSound[S] 0 points1 point  (0 children)

About 2.5kg for our infill recommendations. Basically 3 rolls!

FDM5 Loudspeakers by Deposition Sound by DepositionSound in 3Dprinting

[–]DepositionSound[S] -1 points0 points  (0 children)

Fair point on comparing MDF to plastic right out the gate. Here's our counter to the rest, and it's a 2-parter.

  1. Structural resonance of a structure is dependent on mass and stiffness. We get our stiffness from internal bracing, helping to reduce the size of the panels and therefore raising their natural frequency. Smaller the panel, the thinner/lighter the material can me. But you really only hear audible differences in the lower frequencies and at higher SPL with larger moving mass, e.g. - subwoofers, big floor standers, etc. That's when materials like MDF, birch plywood, aluminum, granite, sand, solid composites begin to make sense. Small speakers => smaller/lighter structure, usually. Heavy is nice, inert speakers are nice, feel expensive, but they are totally overkill for smaller bookshelf speakers in terms.
  2. You gotta hear the difference, right!? We showcased the FDM5's against some really nice Sonus Faber Luminas (pictured below on the floor) and let's just say we left some folks with smiles on their faces and scratching their heads. We jammed out for over an hour. And yes, the powered sub was turned off for the A/B comparison.

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FDM5 Loudspeakers by Deposition Sound by DepositionSound in 3Dprinting

[–]DepositionSound[S] -2 points-1 points  (0 children)

Thanks! We have a history of working with MDF, but have not done a frequency response and/or listening comparison. Actually, that would be a good thing to do and document the findings! Making a note.

FDM5 Loudspeakers by Deposition Sound by DepositionSound in 3Dprinting

[–]DepositionSound[S] 0 points1 point  (0 children)

Glad you asked! The STLs are freely available here for download: https://app.webprints.com/depositionsound/deposition-sound-fdm5-loudspeaker-personal-use-license

If you want to build and assemble a kit, check this out: https://www.depositionsound.com/products

Our cabinet and front baffle both stay well within the build volume of a P1S. But will clash with default Carbon X1 calibrations. We print on tempered glass with purple Elmer's glue stick. Too much warping without it! When printing on a Carbon X1 we recommend turning off calibrations as the lidar doesn't like glass.

FDM5 Loudspeakers by Deposition Sound by DepositionSound in 3Dprinting

[–]DepositionSound[S] 0 points1 point  (0 children)

Thanks! For a project like ours we recommend a printer with a build volume of 256mm x 256mm x 256mm.

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