Author Topic: What did you buy today? Post your latest purchase!  (Read 1547286 times)

0 Members and 2 Guests are viewing this topic.

Offline angelicajames

  • Contributor
  • Posts: 5
  • Country: eg
Re: What did you buy today? Post your latest purchase!
« Reply #10075 on: May 30, 2020, 10:05:18 am »
Buying these, I considered both the Bodum and this Krups grinder. In the end, the Bodum looked better and from other reviews seemed to be more high quality.

If I had the spare cash I might jump on both.
I will kill you if you want...
 

Offline beanflying

  • Super Contributor
  • ***
  • Posts: 5179
  • Country: au
  • Toys so very many Toys.
Re: What did you buy today? Post your latest purchase!
« Reply #10076 on: May 30, 2020, 11:58:43 am »
Buying these, I considered both the Bodum and this Krups grinder. In the end, the Bodum looked better and from other reviews seemed to be more high quality.

If I had the spare cash I might jump on both.

As someone who takes their Coffee more than a little seriously  ;D The little Burr Grinder would be the pick of them unless you are making Turkish style coffee and it won't grind fine enough for that. Also consider a small modern hand grinder if it is just for yourself Hario or Kyocera make really good ones.
Coffee, Food, R/C and electronics nerd in no particular order. Also CNC wannabe, 3D printer and Laser Cutter Junkie and just don't mention my TEA addiction....
 

Online blueskull

  • Supporter
  • ****
  • Posts: 13648
  • Country: cn
  • Power Electronics Guy
Re: What did you buy today? Post your latest purchase!
« Reply #10077 on: May 30, 2020, 02:09:07 pm »
An 8GB Pi4, after a long wait.

Now I can have one at home (for development) and one at work (deployed, 24*7).
 

Offline exor

  • Contributor
  • Posts: 42
  • Country: fi
Re: What did you buy today? Post your latest purchase!
« Reply #10078 on: May 31, 2020, 04:52:45 pm »
New Fluke 867B from year 2002, made in Ireland. This is my second 867, I already have one used made in Holland.

Ohms are spot on like when delivered from factory. After first charge meter stayed on almost nine hours so battery is also fine.
 

Offline Ground_Loop

  • Regular Contributor
  • *
  • Posts: 115
  • Country: us
Re: What did you buy today? Post your latest purchase!
« Reply #10079 on: June 01, 2020, 01:24:51 pm »
Picked up a couple new to me items for the lab this week.  These replace my 2465 and 2430A.
999012-0
There's no point getting old if you don't have stories.
 

Offline Ground_Loop

  • Regular Contributor
  • *
  • Posts: 115
  • Country: us
Re: What did you buy today? Post your latest purchase!
« Reply #10080 on: June 01, 2020, 06:30:15 pm »
Buying these, I considered both the Bodum and this Krups grinder. In the end, the Bodum looked better and from other reviews seemed to be more high quality.

If I had the spare cash I might jump on both.

I've had the KitchenAid burr grinder since about 2002 and still use it every day.  It's bullet proof and grinds perfectly.
There's no point getting old if you don't have stories.
 

Offline dmills

  • Super Contributor
  • ***
  • Posts: 1762
Re: What did you buy today? Post your latest purchase!
« Reply #10081 on: June 02, 2020, 05:58:33 pm »
Prismsound DScope III audio measurement set.

Been after one for ages, superb bit of kit for what it does (The AP has a slightly better generator, but the DScope software is IMHO much more usable).

All good things come to ebay if you wait long enough.



 

Online coppercone2

  • Super Contributor
  • ***
  • Posts: 3913
  • Country: us
  • $
Re: What did you buy today? Post your latest purchase!
« Reply #10082 on: June 02, 2020, 09:15:54 pm »
DP620 Urethane Epoxy
 

Offline deadlylover

  • Regular Contributor
  • *
  • Posts: 216
  • Country: au
Re: What did you buy today? Post your latest purchase!
« Reply #10083 on: June 04, 2020, 03:30:53 am »
Prismsound DScope III audio measurement set.

Very nice, I've wanted one for ages but it is far too expensive for mere hobbyist use, so I had to settle with the old Japanese analysers instead (Panasonic and ShibaSoku). I only needed quick and dirty THD+N measurements so it's more than enough for me.

Curious as to what the typical generator/analyser performance is because the spec is -108dB THD+N and at that level, I think it's just running straight into an ADC instead of notching and processing, right? (like the higher end AP or the traditional analysers from Japan)
 

Offline dmills

  • Super Contributor
  • ***
  • Posts: 1762
Re: What did you buy today? Post your latest purchase!
« Reply #10084 on: June 04, 2020, 10:14:52 am »
The generator is actually the weak point, +4dBu 1kHz is showing about -104dB THD+N and yea I think it just does the ADC thing, but it is also a faction of the cost of a fully tricked out APx552.
It needs to go off to Prism for cal and a tune up.

I mainly wanted the multi tone IMD stuff, usually more important then THD once you get to this sort of level.

I do wonder if the smart way to do a modern THD set is not to use a two channel DAC as the generator and sum one of the channels into the signal returned by the DUT, then the software can adjust that side of the generator to null the fundamental by some sort of LMS loop.
Some of the modern AKM parts spec that you can build 23 ENOB DACs and other such wonders, but we all know how tricky that sort of thing can be in reality.
 

Offline 6h8c

  • Contributor
  • Posts: 11
  • Country: pl
  • Analog system
Re: What did you buy today? Post your latest purchase!
« Reply #10085 on: June 04, 2020, 02:24:07 pm »
Too fast...
Don't tell my wife how much this fun costs ... I want to live to build.
 

Online blueskull

  • Supporter
  • ****
  • Posts: 13648
  • Country: cn
  • Power Electronics Guy
Re: What did you buy today? Post your latest purchase!
« Reply #10086 on: June 04, 2020, 02:24:34 pm »
Prismsound DScope III audio measurement set.

Don't know how much you paid for this, but the paper specs don't look good.
The Keysight M9260A I picked up for 3 grands, after some cleaning, ADC/DAC binning and aging, achieved -122dB best case loopback THD and worst case (with sensible amplitude) THD of no worse than -118dB.
With its default ADC/DAC, it still works better than its paper specs, and my tweaking only improved it by around 2dB on average. What's mot important is I made its two channels more symmetric, which only serves to satisfy my OCD.
 

Offline dmills

  • Super Contributor
  • ***
  • Posts: 1762
Re: What did you buy today? Post your latest purchase!
« Reply #10087 on: June 04, 2020, 03:11:47 pm »
Oh I am sure I can build a better THD setup, even a much better THD setup, but 100+dB down for audio, do I care?

I mean it is not like ANY loudspeaker is going to manage that at significant power (-60 is a stretch for most of 'em), and transducers are the only really interesting bit of audio these days.

Regards, Dan.
 

Online blueskull

  • Supporter
  • ****
  • Posts: 13648
  • Country: cn
  • Power Electronics Guy
Re: What did you buy today? Post your latest purchase!
« Reply #10088 on: June 04, 2020, 03:48:23 pm »
100 pcs of 2450AT42E0100E, an on-ground antenna designed for WiFi. It was globally out of stock, and unfortunately it was the only option that fits my space requirements despite my exhaustive searching. I even opted to do extensive EM simulation to find my own solution, only to be greeted with bad data from my VNA.

Today I accidentally bumped to an AD (based on my previous searches) that Digikey has 220 pcs of them, so I grabbed 100 pcs.
 
The following users thanked this post: jancumps

Online Messtechniker

  • Frequent Contributor
  • **
  • Posts: 447
  • Country: de
  • Old analog audio hand - No voodoo.
Re: What did you buy today? Post your latest purchase!
« Reply #10089 on: June 04, 2020, 04:19:32 pm »
and transducers are the only really interesting bit of audio these days.

Regards, Dan.
and room acoustics. That's where your money should go and not to fancy electronic voodoo equipment. Room acoustic treatment is usually ignored since you can not buy it easily like electronic equipment and voodoo mains cords and alike.
Agilent 34465A, Hameg HMO1022, R&S HMC 8043, Voltcraft VC 940 and M-Audio Audiophile 192
 

Offline McBryce

  • Super Contributor
  • ***
  • Posts: 1632
  • Country: de
Re: What did you buy today? Post your latest purchase!
« Reply #10090 on: June 04, 2020, 04:46:21 pm »
and transducers are the only really interesting bit of audio these days.

Regards, Dan.
and room acoustics. That's where your money should go and not to fancy electronic voodoo equipment. Room acoustic treatment is usually ignored since you can not buy it easily like electronic equipment and voodoo mains cords and alike.

I'm pretty sure that the Audiofools will see that differently. First you need to make sure that your IEC plugs are gold plated, then you need to balance the cable on teak wood bridges so that they don't just lie on the floor. Then comes the copper that needs to have been extruded in the correct direction so that the electrons flow best and we haven't even started on the capacitors made from unicorn tears by naked virgins. Obviously none of this is measurable with the insufficient equipment that we "non-believers" use, but the "trained ear" will notice an obvious improvement in (add some non-defined unit of clarity, dynamic vibrance or whatever here).

McBryce.
 

Offline dmills

  • Super Contributor
  • ***
  • Posts: 1762
Re: What did you buy today? Post your latest purchase!
« Reply #10091 on: June 04, 2020, 05:00:55 pm »
and room acoustics. That's where your money should go and not to fancy electronic voodoo equipment. Room acoustic treatment is usually ignored since you can not buy it easily like electronic equipment and voodoo mains cords and alike.
Indeed, the room is the thing in the first instance, but you ever tried to tell someone that?

Regards, Dan.
 

Offline Cubdriver

  • Supporter
  • ****
  • Posts: 2872
  • Country: us
  • Nixie addict
    • Photos of electronic gear
Re: What did you buy today? Post your latest purchase!
« Reply #10092 on: June 04, 2020, 05:15:18 pm »
and transducers are the only really interesting bit of audio these days.

Regards, Dan.
and room acoustics. That's where your money should go and not to fancy electronic voodoo equipment. Room acoustic treatment is usually ignored since you can not buy it easily like electronic equipment and voodoo mains cords and alike.

I'm pretty sure that the Audiofools will see that differently. First you need to make sure that your IEC plugs are gold plated, then you need to balance the cable on teak wood bridges so that they don't just lie on the floor. Then comes the copper that needs to have been extruded in the correct direction so that the electrons flow best and we haven't even started on the capacitors made from unicorn tears by naked virgins. Obviously none of this is measurable with the insufficient equipment that we "non-believers" use, but the "trained ear" will notice an obvious improvement in (add some non-defined unit of clarity, dynamic vibrance or whatever here).

McBryce.

Don't forget that cryo-treating everything will improve the sound noticeably (though immeasurably - our stupid instruments are no match for a golden ear!), too - make the highs higher, the lows lower and expand the soundscape.  I'm surprised none of them have advocated getting a dewar full of liquid nitrogen and spraying it on the walls and furniture to cryo treat the room!  (Perhaps we should suggest they dip their heads into LN2 to cryo treat their ears!)

-Pat
If it jams, force it.  If it breaks, you needed a new one anyway...
 

Offline McBryce

  • Super Contributor
  • ***
  • Posts: 1632
  • Country: de
Re: What did you buy today? Post your latest purchase!
« Reply #10093 on: June 04, 2020, 05:45:33 pm »
Forget the Cryo, I'm just deeply embarrased that I completely forgot to use the word Soundscape in my post. Oh the shame of it all!

McBryce.
 

Offline Cubdriver

  • Supporter
  • ****
  • Posts: 2872
  • Country: us
  • Nixie addict
    • Photos of electronic gear
Re: What did you buy today? Post your latest purchase!
« Reply #10094 on: June 04, 2020, 06:10:42 pm »
Forget the Cryo, I'm just deeply embarrased that I completely forgot to use the word Soundscape in my post. Oh the shame of it all!

McBryce.

Shame!  Shame!  Shame!  Shame!   :P

 :-DD :-DD :-DD

It never ceases to amaze me that these people will swear that their insanely high end system sounds /noticeably/ better with the addition of a $2500 AC mains cable to power their CD player.  If your system is nearly perfect, then how can it sound noticeably better?  And if it can sound noticeably better, then it must be far from perfect.  Making an almost perfect thing noticeably better sounds rather contradictory to me.  (But then again, I probably have a tin ear and can't hear the increased lushness that adding expensive little holographic stickers to the ICs and capacitors in my equipment can provide.  I'm such an acoustic philistine!)

-Pat
If it jams, force it.  If it breaks, you needed a new one anyway...
 

Offline dmills

  • Super Contributor
  • ***
  • Posts: 1762
Re: What did you buy today? Post your latest purchase!
« Reply #10095 on: June 04, 2020, 07:25:20 pm »
Nope, you cryo your ears by entering your listening room, closing the door, putting on a classic recording, then taking a 250L dewar of LN2, close the windows and spray the lot around the room!

Hint, consider how much atmosphere will be displaced as 250L N2(l) turns into N2(g) and warms to room temperature.....
That ~20% of not nitrogen in air is important!
 

Offline mmcgraw74

  • Contributor
  • Posts: 12
  • Country: us
Re: What did you buy today? Post your latest purchase!
« Reply #10096 on: June 05, 2020, 12:53:30 am »
Last Month I bought the Tektronix 4041 GPIB Controller.

But look what I found today!

The Keyboard !!!!

Wow! That keyboard is very rare.

I just powered my pair of 4041's after storage in my garage since 2000 - and they both still work!

I was also able to recover all the files on the 4041 System Verification Tape!  See my thread on
vcfed.org: http://www.vcfed.org/forum/showthread.php?75275-Tektronix-4041-computer-from-the-early-1980-s-WORKING!!&p=622704#post622704

I also created a github repository where I uploaded all the files from the System Verification Tape, and the option ROMs I had in my 4041:
https://github.com/mmcgraw74/Tektronix-4041-GPIB-Controller

I found posts in https://groups.io/g/TekScopes/topic/29991395?p=Created,,,20,2,20,0 titled "Tek 4041 GPIB Controller" where we discussed how to use the 4041 keyboard interface, and my steps in creating a copy of the System Verification tape from my posted files.
 

Online Messtechniker

  • Frequent Contributor
  • **
  • Posts: 447
  • Country: de
  • Old analog audio hand - No voodoo.
Re: What did you buy today? Post your latest purchase!
« Reply #10097 on: June 05, 2020, 10:27:44 am »

Indeed, the room is the thing in the first instance, but you ever tried to tell someone that?

Regards, Dan.

Yep. Frightens the life out of those audiophools.  >:D
Because doing room acoustics requires real knowledge, experience and the right measuring equipment for frequency decay time measurements and room nodes. And you need a lot of time. But that's  :horse:
Agilent 34465A, Hameg HMO1022, R&S HMC 8043, Voltcraft VC 940 and M-Audio Audiophile 192
 

Offline mansaxel

  • Frequent Contributor
  • **
  • Posts: 595
  • Country: se
  • SA0XLR
    • My very static home page
Re: What did you buy today? Post your latest purchase!
« Reply #10098 on: June 05, 2020, 04:39:33 pm »
Prismsound DScope III audio measurement set.

Been after one for ages, superb bit of kit for what it does (The AP has a slightly better generator, but the DScope software is IMHO much more usable).

All good things come to ebay if you wait long enough.

Utter, thorough, long-lasting envy. Congratulations.

"Why does this Sonifex clock say that it's got good WordClock in when it's fed with Blackburst?"
(actual thing that happened this week.)

Offline McBryce

  • Super Contributor
  • ***
  • Posts: 1632
  • Country: de
Re: What did you buy today? Post your latest purchase!
« Reply #10099 on: June 05, 2020, 05:14:45 pm »
Bought a "broken" Asus MemoPad HD10 for €20 to use as a screen on my Andonstar microscope. The supposed broken bit is the wlan, but it's not broken, WPA_suppliment_conf is just corrupted. Now in the process of rooting it so that I can swap the file and get wlan running again.

McBryce.
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf