@6thplanet
To understand the directivity and the influence of the horn you can EQ the speaker to flatten its on-axis response (0°), then remeasure. The new measurements will show a flat response on-axis, while deviations off-axis reveal how the speaker’s directivity behaves. As shown above, I’ve taken measurements both with and without EQ. Does that make sense?
To understand the directivity and the influence of the horn you can EQ the speaker to flatten its on-axis response (0°), then remeasure. The new measurements will show a flat response on-axis, while deviations off-axis reveal how the speaker’s directivity behaves. As shown above, I’ve taken measurements both with and without EQ. Does that make sense?
Still had my default smoothing on from the sub measurements. Here are the important ones unsmoothed. Gated at 2.5ms.
13 years ago I had a toddler vs ultra slim speaker problem too. I wanted a minimalist look without plates or outriggers so I came up with a rather odd, drastic to some, mounting solution. Once I had settled on exact speaker placement I secured the hardwood flooring to the subfloor with screws and routed out a large key hole in the floor under each speaker then made an aluminum flange that bolted onto the center of the speaker base. The speakers dropped into the key hole and slid back to lock into place. They could not be moved but rotated if needed. When we sold the house I had to plug the holes in the floor but it wasn't very hard to grain match the bland even grained maple and refinish those spots.
Am I Chasing the Last 1%?
Encouraged by the measurements of the roundover surround I added to the Tritonia XS, I’m now trying to adapt that performance into a version that fits my printer bed (180×180 mm). Ideally, I’d like to print it all in one piece.
The Tritonia XS is 140 mm wide, which gives me 20 mm to work with on each side. I experimented with a 20 mm roundover followed by a larger curve that wraps toward the back. To shape the transition, I (somewhat naively and superstitiously) used the Fibonacci sequence to grow from 20 mm to 32.3 mm.
New profile (printable in one piece):
Comparison: 25 mm radius roundover surround:
There’s very little between them in terms of performance - but is it enough to justify the effort?
Can this be fully resolved, or have I officially lost the plot?
Would love to hear from others who have dabbled in this 🙂
Encouraged by the measurements of the roundover surround I added to the Tritonia XS, I’m now trying to adapt that performance into a version that fits my printer bed (180×180 mm). Ideally, I’d like to print it all in one piece.
The Tritonia XS is 140 mm wide, which gives me 20 mm to work with on each side. I experimented with a 20 mm roundover followed by a larger curve that wraps toward the back. To shape the transition, I (somewhat naively and superstitiously) used the Fibonacci sequence to grow from 20 mm to 32.3 mm.
New profile (printable in one piece):
Comparison: 25 mm radius roundover surround:
There’s very little between them in terms of performance - but is it enough to justify the effort?
Can this be fully resolved, or have I officially lost the plot?
Would love to hear from others who have dabbled in this 🙂
Attachments
@Illusus Yes, I know the feeling. As I get older and time becomes more of a premium, it gets harder to strike the right balance. I went into the sub build specifically with the idea that I would not sweat the petty things.
But I guess it comes down to one question: does it really matter?
One of the sub grilles is 0.6 mm lower than the others.
It's there. It lurks.
IT CONSUMES ME.
But I guess it comes down to one question: does it really matter?
- Am I bothered because others might notice and think my handiwork is less than I believe it is? If so, that's pride.
- Is it a genuine effort to achieve the best for myself? Then it's a question of effort versus result, and where diminishing returns start to creep in.
- Or have we just lost perspective? Maybe this is self-sabotage disguised as misunderstood perfectionism, stopping us from enjoying the process.
One of the sub grilles is 0.6 mm lower than the others.
It's there. It lurks.
IT CONSUMES ME.
Midwoofers...
So, I have a handful of contenders:
Thoughts, anyone?
It’s tricky to find one that will fit the 157 mm wide baffle and the 121 mm internal width of the box.
So, I have a handful of contenders:
Faital Pro 5FE120
Pros- Cheap (around £25)
- Easy to replace, which makes leaving it uncovered less risky for little fingers
- Decent distortion measurements
- But not the best distortion performance
- Low WAF
18 Sound 5W430
Pros- Mid-priced (around £50)
- Aluminium cast basket
- Better distortion numbers than the Faital
- Will need a grille
- No demodulation ring
BMS 5S117
Pros- Excellent distortion performance
- Pairs well with a compression driver
- Quite expensive (£100)
- Will definitely need a grille
- Distortion rises sharply around my intended crossover (120 Hz)
- High Fs
Thoughts, anyone?
It’s tricky to find one that will fit the 157 mm wide baffle and the 121 mm internal width of the box.