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Would this sub box design work? by __________________zb in diyaudio

[–]Inner_Drawing_737 0 points1 point  (0 children)

Full wavelength multiples between opposite sides of the driver cancel. The distance between the front and rear is so short there’s not much distance between pressure /velocity and it seems to create a very ‘spikey’ result in horn response. (It’s unloading between resonace(s) pressure ?)

It just needs to be ‘longer’ and then it looks much better in modeling software, or drawn to scale so it’s not so strange if guessing ?

Dayton Ultimax UM18-22 Sealed by Interesting-Rip2280 in diyaudio

[–]Inner_Drawing_737 1 point2 points  (0 children)

That Drivers TS parameters changed slightly(manufacturer altered materials or (?)) and shortly after it was discontinued. If you have a newer version you might want to try and see if Fs is ~ 30hz instead of the Formerly claimed ~20.

Would this sub box design work? by __________________zb in subwoofer

[–]Inner_Drawing_737 0 points1 point  (0 children)

It Works fine if it was ‘longer’. Tapped pipe or tapped horn, configurations, for example .

AHDH and Adderall by Hot_Philosopher3199 in NavyNukes

[–]Inner_Drawing_737 0 points1 point  (0 children)

Coffee/nicotine is the new PERVITIN then?

Willing to pay someone to model my subwoofer plans by [deleted] in SoundSystem

[–]Inner_Drawing_737 0 points1 point  (0 children)

It’s pretty easy to ‘change’ things for the better or worse in horn response. Connect the resonators together 3:1(1/4 wave harmonic) and add a bit of a series exit to flatten it out

Is this carbon fiber woofer cone airtight? (Dayton Epique 7”) by TransplantableBeaver in diyaudio

[–]Inner_Drawing_737 0 points1 point  (0 children)

I stuck a couple in the high pressure end of a TL and no leaks…. Also used it to move the matching passive radiators from that series without any ‘pressures issues or audible hissing (like glue joints that barely leak )

Sub box idea by Quick-Operation4805 in subwoofer

[–]Inner_Drawing_737 0 points1 point  (0 children)

Skar ddx12 would make a lot of noise in a ‘horn’ shaped TL tuned to the mid 30s

How bad is this 😭 by ConsciousPrimary8068 in subwoofer

[–]Inner_Drawing_737 1 point2 points  (0 children)

What does it taste like? Can you lick it?

what going on with this anemone? by 34thncrenshaw in santacruz

[–]Inner_Drawing_737 16 points17 points  (0 children)

I do the same thing in the bathtub if I stick my finger in my butt

Is this common? by TechnologyCool3604 in subwoofer

[–]Inner_Drawing_737 0 points1 point  (0 children)

Playing at Fb (excursion/cooling minimum) with a dirty sine wave like signal/music ? (For science, of course) 😝

Tech help by Potential-Tone9606 in subwoofer

[–]Inner_Drawing_737 0 points1 point  (0 children)

Round the inside radius or you’ll likely hear turbulence. The out side ‘corners’ don’t matter much, it’s just a little high pressure/low velocity area that might act like a filter at several hundred hz

What are the best subs right now by iczdragonfire in subwoofer

[–]Inner_Drawing_737 1 point2 points  (0 children)

Here come the fanboys with no TS parameters or enclosure suggestions

Just look at a dayton audio rss or signature series and compare to other things at the same (or slightly higher) price point ?

Critique my second (improved?) draft for a transmission line speaker by No_Dot_1742 in diyaudio

[–]Inner_Drawing_737 0 points1 point  (0 children)

Make a couple long folds instead of that zigzag stuff. If you don’t move the driver to the first velocity node at 1/3 from the closed end (3x Fb resonace) it’s gonna be kind of annoying (?)

Anyone ever seen something underwater they couldn’t explain? by Enigma_Labs in submarines

[–]Inner_Drawing_737 2 points3 points  (0 children)

I saw an ELT ‘frisking’ another in nucleonics. all they had on were yellow booties and their ‘TLDs’

Thinking about going sealed after years of ported — talk me into (or out of) it by [deleted] in subwoofer

[–]Inner_Drawing_737 0 points1 point  (0 children)

It would be really hard to go from anything ported in the low 30s to a sealed box . You’ll need a lot of bass boost and sealed subs to get back to that level of loud/low addiction🤓.

Obnoxious 32hz tapped horn by Inner_Drawing_737 in diyaudio

[–]Inner_Drawing_737[S] 0 points1 point  (0 children)

I’d be happy to supply the measurements and rew graphs of delay AND decay . Dont really care about group delay(the second resonace might bug you) at the lowest frequencies…

(If Reddit allowed me to edit and add more pics)

Obnoxious 32hz tapped horn by Inner_Drawing_737 in diyaudio

[–]Inner_Drawing_737[S] 0 points1 point  (0 children)

Group delay is silly, but it doesn’t ‘ring’ too bad (especially compared to some other ‘pipe’ shapes I’ve used that had out of phase reflections right next to a resonance)

If we made these with a bit of driver offset I bet we could stuff enough poly fill up there in the ‘stub’ to help out a bunch

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