Author Topic: What did you buy today? Post your latest purchase!  (Read 714964 times)

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Online HalFET

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Re: What did you buy today? Post your latest purchase!
« Reply #4750 on: November 14, 2017, 09:22:16 AM »
This little baby arrived today!

Sweet :)
An analogue limiter!

You can also use it to reset AVR fuse bits!
 

Online Gyro

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Re: What did you buy today? Post your latest purchase!
« Reply #4751 on: November 14, 2017, 09:35:09 AM »
What are you using for the other contact?  :D
Chris

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Online HalFET

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Re: What did you buy today? Post your latest purchase!
« Reply #4752 on: November 14, 2017, 09:48:29 AM »
What are you using for the other contact?  :D

A random slab of metal I have laying around, used a piece of tungsten for a while but people kept saying it'll shatter so stopped using it. Think I might get some hardened tooling steel at some point. For the softer non-stick action I also have a 2 cm diameter teflon rod on my desk at work, been meaning to install a handle on it.
 

Offline Mr. Scram

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Re: What did you buy today? Post your latest purchase!
« Reply #4753 on: November 14, 2017, 07:40:30 PM »
A random slab of metal I have laying around, used a piece of tungsten for a while but people kept saying it'll shatter so stopped using it. Think I might get some hardened tooling steel at some point. For the softer non-stick action I also have a 2 cm diameter teflon rod on my desk at work, been meaning to install a handle on it.
Why do you want something hard? That's more likely to shatter. Having something that isn't too hard also saves the copper head.

A lot of metals will actually work harden sooner or later anyway.
 

Offline ChrisLX200

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Re: What did you buy today? Post your latest purchase!
« Reply #4754 on: November 15, 2017, 06:00:01 AM »
I didn't buy it but made it - a solder reel holder which clears my bench of the space previously occupied by 3 discrete reel holders, makes a big difference when you hardly have any room to start with.

 
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Online HalFET

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Re: What did you buy today? Post your latest purchase!
« Reply #4755 on: November 15, 2017, 07:08:31 AM »
Why do you want something hard? That's more likely to shatter. Having something that isn't too hard also saves the copper head.

A lot of metals will actually work harden sooner or later anyway.

Well, the piece of tungsten was actually previously used as a sort of press platen.

But it really depends on what you're hammering away at, for softer things I always put scrap MDF or aluminium underneath, but if it's really to shape something there's no point in having a soft surface underneath, it'll just sink into the surface of your anvil. The "hard means super brittle" thing is pretty much wrong, it really depends on the quality of the material and its exact crystalline structure. There are tooling steel alloys that will happily take brutal impacts all days and still flex under load without instantly breaking when asked to. For example, the striking surface on a blacksmith anvil is actually hardened steel, the regular cast iron would shatter, mild steel would deform, but put a slab of hardened steel with the right hardness in there and you're set for life.  :D  Things aren't always as straight cut as most people seem to believe.
 

Offline Mr. Scram

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Re: What did you buy today? Post your latest purchase!
« Reply #4756 on: November 15, 2017, 07:54:06 AM »
Well, the piece of tungsten was actually previously used as a sort of press platen.

But it really depends on what you're hammering away at, for softer things I always put scrap MDF or aluminium underneath, but if it's really to shape something there's no point in having a soft surface underneath, it'll just sink into the surface of your anvil. The "hard means super brittle" thing is pretty much wrong, it really depends on the quality of the material and its exact crystalline structure. There are tooling steel alloys that will happily take brutal impacts all days and still flex under load without instantly breaking when asked to. For example, the striking surface on a blacksmith anvil is actually hardened steel, the regular cast iron would shatter, mild steel would deform, but put a slab of hardened steel with the right hardness in there and you're set for life.  :D  Things aren't always as straight cut as most people seem to believe.
Sure, I'm obviously simplifying matters for the sake of the discusison. However, thinking about what you use to interface with what is a good idea. Considering you have a copper hammer, you don't seem too interested in super sharp shaping capabilties, and it might be a good idea to pick something more foregiving to make it a bit easier on the tool. If you start beating on hardened steel with that, the tool will show it.

Also, pressing and hammering aren't quite the same thing when looking at the stresses :) I don't think I said hard means super brittle, but there certainly is a correlation between hardness and how brittle something is. A lot of material science is aimed at hardening materials without making them too brittle. It can be done, but isn't what most materials like to do naturally.
 

Online HalFET

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Re: What did you buy today? Post your latest purchase!
« Reply #4757 on: November 15, 2017, 08:20:07 AM »
Well, first of all I don't actually intend to use this hammer to smash things to bits, for that a good old steel hammer is still the best choice, if you're in a non-explosive/flammable atmosphere at least. But for softer things I use aluminium scraps or MDF as stated before, but even with aluminium you got to be careful which alloy you use, some are pretty damn hard. Additionally the entire point of a copper hammer is that it's softer than the material you're hitting.

And about press platen, actually you absolutely do not want brittle things for those. Otherwise you might end up with some interesting problems when you run into non-flat press books.
 

Offline GreyWoolfe

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Re: What did you buy today? Post your latest purchase!
« Reply #4758 on: November 15, 2017, 09:50:42 AM »
I didn't buy it but made it - a solder reel holder which clears my bench of the space previously occupied by 3 discrete reel holders, makes a big difference when you hardly have any room to start with.

Nice job!!   :-+ :-+
It is only when a mosquito lands on your testicles that you realize there is a way to solve problems without violence.
 
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Offline blueskull

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Re: What did you buy today? Post your latest purchase!
« Reply #4759 on: November 15, 2017, 09:56:47 AM »
A Japan version of Sony DPT-RP1, not the US black version. When I first watch the video I said to myself I will get one, but even till now there's no white version available in US, so yesterday I decided to buy one from Japan directly. It should arrive in less than a week, hopefully.

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Offline rsjsouza

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Re: What did you buy today? Post your latest purchase!
« Reply #4760 on: November 15, 2017, 01:29:33 PM »
A Japan version of Sony DPT-RP1, not the US black version. When I first watch the video I said to myself I will get one, but even till now there's no white version available in US, so yesterday I decided to buy one from Japan directly. It should arrive in less than a week.
Interesting gadget. However, another day one of your posts gave me the impression you were fed up with Sony and were not buying their stuff anymore... Or was it only applicable to cell phones?
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Online neo

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Re: What did you buy today? Post your latest purchase!
« Reply #4761 on: November 15, 2017, 01:41:41 PM »
A Japan version of Sony DPT-RP1, not the US black version. When I first watch the video I said to myself I will get one, but even till now there's no white version available in US, so yesterday I decided to buy one from Japan directly. It should arrive in less than a week.
Interesting gadget. However, another day one of your posts gave me the impression you were fed up with Sony and were not buying their stuff anymore... Or was it only applicable to cell phones?

I cannot speak for blue but in my opinion Sony makes some of the best audio gear.
Hopeless addict and slave to TEA.
 

Offline blueskull

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Re: What did you buy today? Post your latest purchase!
« Reply #4762 on: November 15, 2017, 01:43:20 PM »
Interesting gadget. However, another day one of your posts gave me the impression you were fed up with Sony and were not buying their stuff anymore... Or was it only applicable to cell phones?

No phones, no laptops, no point-and-shoots, and no HiFi players/amps.
Sony still makes some very decent headphones, business oriented products and is still the world's No. 1 optical storage media manufacturer and No. 1 high end camera sensor manufacturer.
I'm totally fine with my two Sony mirrorless cameras, and some business gears (IC recorders, commercial projector, etc.).

I don't want to jinx it, but I hope this eInk paper will not fail me.
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Online neo

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Re: What did you buy today? Post your latest purchase!
« Reply #4763 on: November 15, 2017, 01:46:07 PM »
Interesting gadget. However, another day one of your posts gave me the impression you were fed up with Sony and were not buying their stuff anymore... Or was it only applicable to cell phones?

No phones, no laptops, no point-and-shoots, and no HiFi players/amps.
Sony still makes some very decent headphones, business oriented products and is still the world's No. 1 optical storage media manufacturer and No. 1 high end camera sensor manufacturer.
I'm totally fine with my two Sony mirrorless cameras, and some business gears (IC recorders, commercial projector, etc.).

I don't want to jinx it, but I hope this eInk paper will not fail me.

Whats wrong with their amps? I like mine, have had it for 3 years.
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Offline blueskull

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Re: What did you buy today? Post your latest purchase!
« Reply #4764 on: November 15, 2017, 01:52:28 PM »
I cannot speak for blue but in my opinion Sony makes some of the best audio gear.

Heavily overpriced amplifiers and DACs with ambiguous specifications.
Their players are basically just joke. The S-MASTER is just 1 bit sigma delta, developed to save power (no opamps anymore).
For whatever reason, Sony decides to market DSD/S-master direct play technology, which is basically dumping DSD stream to RC filter then to headphone directly.
And the worst thing is that the audiophile market actually agrees with it. Don't know how much money they spent on bribing HiFi editors, though.
I have a couple S-master players, and I have to say they did a great job. It's hard to build a pure digital amplifier with such high audible background noise. They must have violated all design rules.
They do have some non-S-master devices, such as PHA series headphone amp+DAC combo, and they are some of the best specced devices, just the price is quite bloated, at $999 in US.
And I highly doubt if they have any knowledge in system engineering. PHA3 runs HOT, even hot to touch, it burns. Only Sony will sell hot to touch consumer, portable, supposedly pocketable gears.
Oh, they know that. They have a high temp sensor that will inhibit battery charging to prevent a fire -- supposedly it has happened somewhere in their R&D process. And they didn't reduce its power consumption.

They have some really good headphones, and that's it.
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Offline blueskull

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Re: What did you buy today? Post your latest purchase!
« Reply #4765 on: November 15, 2017, 02:00:50 PM »
Whats wrong with their amps? I like mine, have had it for 3 years.

I'm more into headphone gears, so here amps mean HPAs.
Just check out their spec. No THD, no SNR, no nothing, just beautiful marketing BS.
Check out this one: https://www.sony.com/electronics/audio-components/ta-zh1es/specifications#features

Specs only say power output @1% THD. That's rubbish.
And look at the marketing BS, all the nice pictures are all basically saying it is a custom implemented sigma delta DAC with a dubious analog feedback (dubious because it introduces cascode error, and there's no other stages to correct those, basically the analog feedback dictates THD. Good design for sigma delta analog-to-analog amps, but not for digital-to-analog amps).
They seems to be able to manipulate the market and make everyone thinks DSD is an awesome technology, which it is just how SDM works under the hood.
Just because there is no other big company that manufactures custom implemented SDM DAC doesn't mean Sony can say whatever BS they want.
SIGSEGV is inevitable if you try to talk more than you know. If I say gibberish, keep in mind that my license plate is SIGSEGV.
 

Online neo

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Re: What did you buy today? Post your latest purchase!
« Reply #4766 on: November 15, 2017, 02:04:10 PM »
I cannot speak for blue but in my opinion Sony makes some of the best audio gear.

Heavily overpriced amplifiers and DACs with ambiguous specifications.
Their players are basically just joke. The S-MASTER is just 1 bit sigma delta, developed to save power (no opamps anymore).
For whatever reason, Sony decides to market DSD/S-master direct play technology, which is basically dumping DSD stream to RC filter then to headphone directly.
And the worst thing is that the audiophile market actually agrees with it. Don't know how much money they spent on bribing HiFi editors, though.
I have a couple S-master players, and I have to say they did a great job. It's hard to build a pure digital amplifier with such high audible background noise. They must have violated all design rules.
They do have some non-S-master devices, such as PHA series headphone amp+DAC combo, and they are some of the best specced devices, just the price is quite bloated, at $999 in US.
And I highly doubt if they have any knowledge in system engineering. PHA3 runs HOT, even hot to touch, it burns. Only Sony will sell hot to touch consumer, portable, supposedly pocketable gears.
Oh, they know that. They have a high temp sensor that will inhibit battery charging to prevent a fire -- supposedly it has happened somewhere in their R&D process. And they didn't reduce its power consumption.

They have some really good headphones, and that's it.

On my amplifier, which is a receiver to be specific, i've never noticed noise on the headphones. I have 5 amps (and or receivers); Onkyo, Pioneer, Sherwood, Sony and a semi vintage BSR of all the BSR is my favorite, though the Sony is my second favorite.
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Offline blueskull

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Re: What did you buy today? Post your latest purchase!
« Reply #4767 on: November 15, 2017, 02:07:58 PM »
I don't know, on my amplifier, which is a receiver to be specific, i've never noticed noise on the headphones.

Because you probably don't have an S-master HPA or your device is a newer one.
My A845 (some of the earliest S-master players) had HUGE background noise, more than anything else -- including cellphones.
I basically had to use it with an impedance cable (those given on aircraft to attenuate seat 3.5mm jack noise) or a low sensitivity, high impedance headphone.
My ER4S works with it well with little noise, but some high sensitivity IEMs, such as my IE7, SE846 and even Sony included IEMs, all have quite some noise.
SIGSEGV is inevitable if you try to talk more than you know. If I say gibberish, keep in mind that my license plate is SIGSEGV.
 

Offline McBryce

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Re: What did you buy today? Post your latest purchase!
« Reply #4768 on: November 15, 2017, 07:25:07 PM »
I didn't buy it but made it - a solder reel holder which clears my bench of the space previously occupied by 3 discrete reel holders, makes a big difference when you hardly have any room to start with.

Are you taking orders? :)

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Offline ChrisLX200

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Re: What did you buy today? Post your latest purchase!
« Reply #4769 on: November 15, 2017, 07:52:43 PM »
Quote from: McBryce on Today at 07:25:07 PM>Quote from: ChrisLX200 on Today at 06:00:01 AM
I didn't buy it but made it - a solder reel holder which clears my bench of the space previously occupied by 3 discrete reel holders, makes a big difference when you hardly have any room to start with.

Are you taking orders? :)

McBryce.


For a piece of bent mental with holes in? LOL no :)
 

Online rdl

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Re: What did you buy today? Post your latest purchase!
« Reply #4770 on: November 15, 2017, 09:35:08 PM »
I bought a Sony receiver once. If you turned the volume up past 40% the "protection" circuit would kick in and shut off the audio. I just put up with that because I lived in an apartment and didn't really need to be playing it loud anyway. After a couple of years it developed a habit of latching the volume control motor when you pressed "up" on the remote. You would have to quickly walk over and turn it down manually. Coincidentally, the "protection" circuit stopped working at the same time. This resulted in blowing a fairly expensive speaker. I ordered a different amp to replace it and when it arrived, the Sony went back in its box and into storage where it remains to this day.
 

Offline nfmax

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Re: What did you buy today? Post your latest purchase!
« Reply #4771 on: November 15, 2017, 10:20:20 PM »
I once came across a top-of-the-range Sony FM tuner, being used as an off-air monitor at a BBC studio. It was intermittently distorting. It turned out to be a design flaw - the OPAMP driving the final audio output was biased only by the leakage through the electrolytic capacitor on its input, so its DC operating voltage was prone to wander, sometimes provoking clipping.

We checked the circuit diagram, and this was obviously how it was 'designed'. There were DC voltages marked at key points, and sure enough, the voltage at the left & right channel OPAMP inputs was several volts different.

And nobody noticed, and nobody checked it. I wonder if it was ever tested over its specified operating temperature range?
 

Offline capt bullshot

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Re: What did you buy today? Post your latest purchase!
« Reply #4772 on: November 15, 2017, 10:46:14 PM »
Sony stuff: That's the reason(s) why in Germany Sony is pronounced like "So nie" - never this way  ;D
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Offline Watth

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Re: What did you buy today? Post your latest purchase!
« Reply #4773 on: November 16, 2017, 04:11:04 AM »
An Extech EX330!
Because "Matth" was already taken.
 

Offline thm_w

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Re: What did you buy today? Post your latest purchase!
« Reply #4774 on: November 16, 2017, 09:13:13 AM »
I'm more into headphone gears, so here amps mean HPAs.
Just check out their spec. No THD, no SNR, no nothing, just beautiful marketing BS.
Check out this one: https://www.sony.com/electronics/audio-components/ta-zh1es/specifications#features

Specs only say power output @1% THD. That's rubbish.

So would SNR capture the level of hiss with no input? I bought some Kanto amp/speakers and they were completely unusable due to hiss. Now I'm not surprised they don't state SNR in the specs.

Swapped them out for an Alientek D8 and its far superior (quoted SNR of 100dB, classD but MAX9722 for headphones). Some hiss is still present, but the amp is much smarter and will shut the output off as soon as no input or 0 volume is present. So hiss is not noticeable (wonder if sony figured that out). I can't really grasp why you'd use classD for headphones, unless you are conserving battery.
 


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