Very unique channel looking forward to exciting content ahead.

Love the design of the FR2 speakers and would really like to see a build video! One of my favorit loudspeaker designs is the B&W 801D (the 15" introduced 1998) which has a large wooden bass enclosure, complemented with a glassfiber(?) mid and aluminium treble dome. I've long been wanting to build a replica or tribute speaker with a similar look but been discouraged by the complex shape. Would you say a 3D printed mid and treble enclosure would be a good idea for this setup? A fixed attachment to the wooden base enclosure would then support and bring mass to the system in total. Air leakage could hopefully be prevented by internal and external painting of the printed parts?

@DIYAudiobyRDPhysics

Жыл бұрын

Combining carpentry and 3D printing is the best way to go about it. Make the bass enclosure simple, heavy and stiff from wood and then add a printed mid-tweet enclosure on top, which benefits more from the design freedom printing offers. I say go for it and let us know how it goes!

I came across your very nice design for an MA Alpair 7 speaker. I was in the middle of a process for designing an enclosure very similar to yours, but the one you created has more finesse especially in the internal structure. I give it a go with resin printing and doing some post-processing with eg bitumen. Have you thought about a thicker hollow wall, for filling up with sand?

@DIYAudiobyRDPhysics

3 жыл бұрын

What printer do you have? This is fairly large for a resin printer. Have a look at our video about the SW1 subwoofer, where we filled the wall with epoxy and silicon carbide. We haven't tried sand yet, but it's definitely interesting and we will do that for a future subwoofer build.

@Chestnutspread

3 жыл бұрын

@@DIYAudiobyRDPhysics I own a Anycubic Photon S and already made some tests. I sliced the model i several parts but already stopped with the front part. With the actual resin the result is too brittle and tighten screws is not possible without breaking the structure. Will reconsider to do it with wood filament on a PLA printer. Also not so time-consuming ;)

@rdspeedphysics4420

3 жыл бұрын

@@Chestnutspread The resin printer could be nice for horns, waveguides, grilles, vents and other smaller parts where smooth surface is nice to have and brittleness is not a problem

Stumbled across your channel. I am doing similar things, just for fun and to challenge myself. Like how to make decent sounding speaker with smallest cheap drivers. Mine do sound actually quiet good considering the 'rubbish' components. I have the same comments about music genres. Synth stuff sounds great, Jazz fantastic, rock and processed audio not very good. My theory was always in the waveshape of organic sounds vs. artificial sounds (synths are sort of an except). Any sound that is created via a natural or physical process, e.g. acoustics seems to reproduce well, more digital square wave type signals overwhelm the drivers rapidly.

@DIYAudiobyRDPhysics

2 жыл бұрын

Agreed. A single-driver point source can sound very natural with light program, but seem overwhelmed with complex music. We have moved towards coaxial drivers for rock and metal music.

Heavy is not necessarily the goal, rigidity is more desirable over mass.

@DIYAudiobyRDPhysics

5 ай бұрын

For subwoofers, it could be enough to increase the resonance frequency outside the passband by stiffening the structure. For full-range applications increased areal mass will reduce the magnitude of the resonance ("mass law").

Can u make a project on Hypex amp with Hypex dsp and Purifi Woofer based project

@DIYAudiobyRDPhysics

2 жыл бұрын

Hypex Fusion amp projects are coming and Purifi drivers are interesting.

Try something in omni directional speakers I have LX mini they are awesome

@DIYAudiobyRDPhysics

2 жыл бұрын

We love Linkwitz's designs and are looking at controlling directivity, both low-frequency (cardioid) and high-frequency (waveguides) as well as some low-directivity drivers like BMRs.

@anandshah71

2 жыл бұрын

@@DIYAudiobyRDPhysics dutch and Dutch 8c is doing cardioid in midrange than low freq

@DIYAudiobyRDPhysics

2 жыл бұрын

@@anandshah71 That is a very interesting loudspeaker indeed.

why would you want to build sealed cabinets with 3d printing? eliminate internal pressure and increase output. seems like a win win

@DIYAudiobyRDPhysics

2 жыл бұрын

Achieving air tight and pressure resistant enclosures with 3D printing can be challenging mainly due to the inherent void content of extrusion processes and low Young's modulus of plastics. This does not mean that sealed enclosures are a bad idea. It just means that attention need to be paid to process parameters (number of wall lines, line overlap) and geometric stiffness (section modulus, spherical shape). 3D printed enclosures are typically small and small enclosures struggle to get large enough vent cross-section to avoid port noise while minimizing the amount of space the vent itself takes up. We've used passive resonators instead (SW2), but even with the SW2 we prefer a sealed configuration with large amounts of EQ. Also, a vent does not remove internal pressure at relevant frequencies, open baffle does. We have very interesting open baffle developments going on, so stay tuned!

MA is an overpriced tr..s. An only small FR driver remains on a market is Fostex 108ez. A bit bigger is Sonido 175. And then such models like Cube Audio, AEG, Voxative... go. Finally Lii Audio F-18 it's still possible to listen to. All the others are good to listen to announcements on a station. By the way, try to print a case with double walls which you can fill up with quartz sand. Always works good.

@DIYAudiobyRDPhysics

2 ай бұрын

That's a strong statement :) The drivers you mention are all quite a bit more expensive than the MA drivers used here. On a higher budget we would recommend multiway speakers. We make sand-filled walls for subwoofers, but for small enclosures the wall thickness takes up a big chunk of the volume.

Why not just add sand in the hull while printing?

@DIYAudiobyRDPhysics

2 жыл бұрын

Sand can be added after printing, too, and works well. Carbon fiber is kinda cool, though, right?

@ismaelyu5

2 жыл бұрын

@@DIYAudiobyRDPhysics i like the carbon look and added stiffness. I mean adding the sand where the into the model to the infill before the top layers are printed