Serious

? Air choke?

Haha. Well, all I really did was aggressively clean the belt (and pulley) with isopropyl alcohol until it left no residue. Went from 0.3% too fast to about 0.06% or so.

well, looks like Fostex doesn't smudge their FR plots as much as before!

@numbercube the limited runs all seem to have less smoothed graphs, but even with the usual smoothing that'd look pretty bad.

every 4"+ widebander's FR with low Rms looks bad, doesn't it? but for 70000 Yen, the FE103A better have the lowest distortion ever...

I could definitely hear the alarms. Some poorly-made dog whistles, too. Other times I would "perceive" something, and knew it to be related to hearing, though it's hard to call it hearing since it was so far outside the normal range.

And yes, CRTs were always annoying, and similar to the ultrasonic alarms.

As for measuring your ability to hear it, I don't think typical audio speakers are a good choice, since they're not really designed to faithfully reproduce those frequencies. You'll need a specialized high frequency transducer to ensure that it's not emitting harmonic noise you're perceiving instead of the frequency under test.

Yep, especially since I just used my Voxativs. There are cheap plasma tweeters on eBay that I'm sure will have the bandwidth required, but I don't think they're low distortion.

@GoodEnoughGear that *might* be it, but I'm pretty sure I had all that switched off (and Follow Source Frequency, which the author in a forum post says should leave tracks entirely unmolested, switched on), yet 32 bits were apparently still being presented to the Dragonfly. I'll test more today.

@bixby @Serious it seemed the opposite to me, I think because the effect on dymamics and transients made it seem like UAPP's FR was tilted warmer. Maybe my particular chain...

From Neutron, UE900s (quad BA with an upper mid to lower treble hole) seems brighter, modded HFW A1 (single DD, more neutral) seems slightly warmer. I think increased dynamics & speed are responsible. Settings are such that both players should be passing data unaltered to the USB DAC. Hmm...

@Serious it sounds like you need to clean up your USB

Did you try UAPP? How did you feel about it?
This is just for getting the best sound on a portable rig. I normally use a Wyrd and some day I will ditch USB completely, but this is for a GO.

DeadBeef... but my mobile listening is very much more convenience than critical, and I only really bother with the external DAC stuff for experimenting.

I have to say 1440i at 155Hz feels like the way it was meant to be used. And the black levels and motion clarity are just glorious coming from my LCD.

https://www.powerfulmothering.com/wp-content/uploads/2016/10/fun-extention-for-the-book-little-blue-truck-1.jpg

Further improvements (blacker background, better imaging etc.) might be had with an LPS ;-)

Gonna do a bit of a write-up in my thread, but I've spent a lot of time thinking about why my graph ended up looking the way it does...

You don't get out much, do you? ;)

@L'Orfeo lots of us on here are either dweebs, geeks, nerds, dorks, or some amalgam of the four :))

P.S. IEM measurements seem to be a massive pain. Good luck, Serious!

Self-awaremess is the Way Of Serious Pug.

Mistakes are allowed, it’s what you do about them that counts. I think you’ll be alright.

All 'the Serious is such a child' thing has gone too far. Typical sbaf drama series. I mean Serious deserved a dickslap, he got one. Is it supposed to be funny? I don't get it.

Kids these days are all about instant gratification. No one is willing to put in the work anymore.

At least the moderators keep an eye on the randos better than before. Nothing against the randos, simply a matter of bad experiences with randos who expect certain things.

I lurked at Changstar for more than a year. When I was ready to sign up it was nuked. The no nonsense vibe in there probably kept noise away better than here.

Nvm

@Muse Wanderer that would be great. Maybe by then my OBs will have a 2nd bass driver for proper tonal balance.

Got to confirm with wife and work but should hopefully make it.
BTW, this OB, PAP trio 15 voxativ, intrigued me and reminded me of your own project. It has a crossover to bring the fast Voxativ driver in line with the slower 15" drivers... http://www.pureaudioproject.com/product/trio15-voxativ-open-baffle-speakers

which model? (seriously, it says 18 years old?)

How is that pic without low pass filtering? Conebreakupmuch?

Haha, the cone breakup seems to be very well controlled.
You can always add a tweeter, but matching the sensitivity might not be easy without a horn or a high efficiency ribbon. I wouldn't want to do that though.

*gasp*

I was expecting a joke video. I don't want to give any views to whatever he's going to say. It also confirms that the people talking the most shit online are totally un-intimidating soft-spoken people away from the keyboard 99% of the time.

What are you trying to do?

I want more bass extension. I gotta try the H-frame again.

Recommend you save up for the AE Dipole series woofers.

Yes, don't underestimate your own country. After WW2 the best German scientists and engineers were transported to the USA (Operation Paperclip). Nazis had a lot of bad ideological leaders, but their short-lived success floated on these brilliant people.

Looks sort of like a black Frisbee.

Or that, yeah.

He is back. :-)

Is it a matter of parallel universes, travelling through the galaxy or do you project part of your being to venues like a hologram? Whatever it is, welcome back.

Welcome back @MoatsArt! Missed ya.