Author: Dave Rat

OK, here are the STL files to print Lexicon PCM60 knobs and buttons. All STL files are in inches. I have printed these on a Formlabs 3 SLA printer and they all fit well, except I have not yet printed the smooth knob.

The knurled knobs shipped on later units and the original PCM-60’s had smooth knobs.

Here are photos of the prints next to actual factory knobs

And below are the drawings and files. Cool cool, hope these come in handy for ya and let me know if ya like them.

The 3D printable STL file for the smooth PCM-60 knob

There is a newer blog post with updated files and I added the older smooth Lexicon PCM 60 knob as well as the square button.

Here is a link to the new post with updated files

I have been working on some Lexicon PCM 60s and one unit is missing knobs and the other is missing knob caps. Since parts for the units are long gone from the manufacturer and locating the proper knobs is a needle in a haystack adventure, I decided to 3D model and print the parts.

So here is a drawing of the knobs and also, here are the STL files as well as the Solidworks files to download if you are in need.

It fits a standard D Shaft pot. Someone may still make these but it was easier to draw and print than to keep searching for them and then wait for shipping and such if I did find them.

Cool cool, let me know if ya want more uploads like this

Dave

So I have been busy with new vids, all three mic chat videos with my daughter Sammy are now up:

In video #1 we discuss why there is such a variety of mics and usages
https://youtu.be/_xlvHB7Ggmo

In video #2 we look at the pulse response of various mics and mic types
https://youtu.be/xNtzSsp9V3w

In Video #3 we listen to the pulse tests and chat about mic types
https://youtu.be/-YTfSX1PxLo

Also on the members side of my YouTube, I just posted a video testing an M-Force bolted to some saw horses, from a SuperSub with low frequency tones from a the YouTube low frequency test video.

https://youtu.be/CPobIlqTN58

and here is a link to a video that analyzes that video

https://youtu.be/cq_nRThQm64

Coming soon, a video using in-ears as mics to listen to the inside of my head.

Anyone up rocking some ultra super lows?

I made a video to test the low frequency limits of YouTube.

Starts at 30Hz and goes down to 1Hz

Then 1Hz down to .1Hz

And it thats not enough, it keeps going down to pure DC voltage

Then to negative DC voltage and all the way back up to 30Hz.

How low do ya think youtube can go?

How low does your system go?

And I dont stop there, I then downloaded the video from youtube and did a second video where I compare the before and after signals.  Fun fun fun!

Fun stuff to ponder

Clarifying Perspectives: Skeptics & Believers

The first in a series of videos diving deep into testing In-Ears is up in the paid Member side of my YouTube channel. I will be releasing at least one per week. So far the videos in various states of completion are:

#1 In Ear Testing
#2 In Ear Specs and Test Gear
#3 Body Resonance vs In Ear Polarity
#4 Audible differences between different In-Ear and Headphone Wiring types

Other ideas for videos in the series I am working on are:

Smaart response of top brand in-ears
Actually hear the various in-ears over YouTube
Test Max output
Test distortion of in-ears
Tear apart and in-ear and look at the Armature
Pulse Response of armature vs driver based in-ears

Cool cool, here is the link to video #1

I am doing a new youtube series where I will be testing and comparing in-ear units from L-Acoustics, JH Audio, Ultimate Ears, Futuresonics, Stealth Sonics and more.

This will be fun doing a deep dive, so far I have recorded 4 videos: over all description video, specs and details about the in ears and the Audx TM-2 measurement unit, polarity of our body vs in ear polarity, and the impacts of differing in ear cables on stereo imaging.

Cool cool, more posts soon.

Ok, its been a long while since I have blogged. Recently my focus has been on my YouTube channel where I have been actively posting about one video per week.

What I am thinking to try and do is to use this blog as a place to suppoet the YouTube channel and chat with channel members, post additional info and such.

Lets give a shot! Going to post a link to the blog on my youtube channel, shoot me a comment and let me know what cha think.

It feels like I’m trapped with a bunch of roommates in some alternate logic nightmare overhearing an endless argument.

Someone wanted to clean the house before the party, someone wants to clean after the party, and someone wants the party in the garage.

Meanwhile the smell of smoke conitinues to waft through the house, there is a strange truck in the driveway, and we all hear loud noises in the garage, oh and there have been reports everyday of an arsonist rapist burglar that has burned down 7 houses in the neighborhood already.

So, one of goes on to say, if y’all did not argue with me, we’d already be having the party and the burglar would never have come. Another says, oh, I saw that burglar guy out back earlier, I love him, he’s gonna give me a flying cat that shits gold coins so I gave him the keys to the garage. And another says, let’s just move the party into the living room. But what about the burglar? Aww, there will always be burglars, what about the fire? Oh, there will always be fires. And the rapist in the house? Just lock your door and be quick when you midnight snack.

And one says, what about that other guy that hates burglars and has a burglar cage in his garage, we could ask him to get rid of the burglar?

No way, I don’t like his dog and he told us to not play our music so loud and he is boring to hang with.

Look, since the party is not gonna happen, best thing is to make the burglar arsonist our new roommate and try and ask him nicely not to start so many fires and try not to rape us. And another is like, hmmm, yeah maybe that is a good idea, we should all stick to our original plans because that is what we believe and all that matters! And shouts of

IGNORE THE BURGLAR!

IGNORE THE FIRE!

IGNORE RAPIST!

YAY HOORAY HOORAY HOORAY HOORAY HOORAY HOORAY HOORAY

PARTY PARTY PARTY PARTY PARTY!

And observing, as if locked in some insane mind bendy speechless nightmare of a tumbling vomit fest

Everything in my soul screams

CAN WE PLEASE JUST GET THE FUCKING BURGLAR OUT OF THE FUCKING GARAGE!