Friday, 25th July 2014.


Posted on Friday, 18th July 2014 by Auw Jimmy

First, I need to say sorry because I haven’t updated this blog for quite some time. Crazy busy with my daily office life. I have some good stuff on hand, but unfortunately don’t have much time to take picture and upload to this blog.

Second, I got email last month from Rob (www.dhtrob.com) regarding my ‘No Name’ Capacitor. You can read his comment yourself below.

I believe the SE45 definitely could have used of big capacitance of the ‘No Name’ Capacitor. And surely with its internal 4-pole construction, it will bring a lot of benefit in terms of the noise filtration, which translated into a better musicality and excellent speed/dynamic. Not mentioning it was specially tuned for music (well, by me off course!).

DHTRob_2

Read the rest of this entry…

Tags: , ,
Posted in Collectible Stuff, DIY Audio | Comments (2)






Posted on Sunday, 18th May 2014 by Auw Jimmy

I’m quite sure most people will know this name ‘Jupiter Condenser Co.’ and its famous brand, Jupiter Beeswax Capacitor. I don’t really remember if there is any other brand using ‘beeswax’, but I can say that Beeswax capacitor is Jupiter.’

Unlike other brand which has moved to Copper foil long time ago, Jupiter is still consistent with Aluminum foil. One reason (probably) to maintain the affordable selling price. Other reason probably they have reached what they want in terms of sonic signature with the Aluminum foil.

Long story short, I received email from Christopher Young from Jupiter Condenser Co. He was asking whether I’m interested to try their new capacitor, with Copper Foil. Definitely I didn’t mind to try, but I also didn’t want to get it for free (as I always tried to be neutral when sharing my findings).

Chris didn’t mind, so he sent me an invoice, I paid it instantly (thanks to Paypal), then within around 2-3 weeks, finally I got his new capacitor.

I still remembered my first online transaction (probably over 12 years ago). I needed to go to a Bank to buy money order, sent by airmail to the seller, waiting him to clear the money order, then finally he would ship the goods, plus another few weeks waiting before I could get the goods. Now? Instant payment within minutes to anyone anywhere the world (though 3.5-4% charge by Paypal is a bit too much if you are paying more than 1K USD).

The first thing that I noticed when I received the goods was this is quite small capacitors. I just couldn’t believe how small it was. Well, I knew that size meant nothing ;-). Other capacitor that I could recall having similar size is Mundorf Supreme.

Jupiter is using pure silver leadout, similar with Jensen and Duelund. The leadout is soft one, also similar like Jensen and Duelund. Very different with Mundorf which is using a bigger diameter leadout (and also stiffer one).

1-Jupiter

Read the rest of this entry…

Tags: , , ,
Posted in Collectible Stuff, DIY Audio | Comments (3)




Posted on Sunday, 11th May 2014 by Auw Jimmy

This is one of the measurement device that has been on my list for a while, it’s HP/Agilent 8903B distortion meter (well, Tektronix AA501 is also on my list). It’s a solid unit with combination of low distortion oscillator and analyzer (which lacked on HP 8903E model). The B version has more feature than the A version, but both offer similar combination of oscillator and analyzer.

1-HP8903B

 

Read the rest of this entry…

Tags: , , , ,
Posted in Collectible Stuff, DIY Audio, Measurement | Comments (2)




Posted on Sunday, 11th May 2014 by Auw Jimmy

In order to have better view (and better understanding) of how stuff works, especially in audio, I need to have more testing equipments. Unfortunately, those are quite expensive for a person who is doing this as hobby – like me. So one by one and step by step is the best way to acquire them.

One of them is below, HP/Agilent 5328A Universal Frequency Counter which covers up to 100 MHz. Not quite sure about the age of this device, but this device was introduced roughly on 1976 by HP, later taken over by Agilent. It has 8 digits (1+7) and mine also comes with nice Digital DC Voltmeter option.

1-HP5328A

Read the rest of this entry…

Tags: , , ,
Posted in Collectible Stuff, DIY Audio, Measurement | Comments (0)




Posted on Sunday, 11th May 2014 by Auw Jimmy

It’s time to replace battery on some of my measurement device. And surprisingly, it’s not easy to find good (and safe) replacement. For some of you who never (I hope really-really never) got problem with battery, probably you will not realize how important to replace your battery and find a good/safe one.

We often forget to replace the battery on our measurement device – like multitester (AVO meter), LCR meter, temperature tester, etc. Especially for you who doesn’t use those device daily. The device left inside the shelves for months (or years) then once you want to use it, boom, it doesn’t work. When you open the device, you see some leakage from the battery. This is very pain story and bigger chance your device is broken permanently (lucky if you can fix it). Been there at least once, and I swear that I won’t let it happens again.

There are several options that we can take.

First is to find a safe battery. It’s not easy, but usually this comes from personal experience. Some brand are well knows as easily to leak, and some has good reputation of being very solid. I’m not preferring any brand, just try to show some local option available.

1-EnergizerLithium

Read the rest of this entry…

Tags: , , ,
Posted in DIY Audio, Measurement | Comments (4)




Posted on Thursday, 1st May 2014 by Auw Jimmy

Long time no post. Quite a busy months. Let’s start with a simple one. All photos were taken with my Nokia Lumia 1020. I was too lazy to use my DSLR for this purpose ;-).

During some ‘cleaning house’ session at the weekend – few weeks ago, I just realized that I have an old Marantz AV Amplifier, PM400AVK. I still remembered that this unit was quite problematic (bulging capacitors, some problem on the driver, etc). Was too lazy to repair, so this unit was stored under the table for long time. Before throwing them away, I thought it would be good to salvage some parts from the unit.

1-Marantz

Read the rest of this entry…

Tags: , , , ,
Posted in Collectible Stuff, DIY Audio | Comments (6)




Posted on Sunday, 16th February 2014 by Auw Jimmy

This is a giant tube. With around 500 grams of weight, definitely this is a heavy weight class. It’s a Pentode with shadow grid to reduce the screen current – so we should call it a Hexode. Its filament rated at around 12.5V and 2.3A. At around 25W filament, it shouldn’t be that hot.

As shown below, the filament is on the center, from the top to bottom. The metal plate on the base seems used as heatsink. This tube is very sturdy in terms of the construction.

TelefunkenYL1260_2

Read the rest of this entry…

Tags: , ,
Posted in Collectible Stuff, DIY Audio | Comments (2)




Posted on Sunday, 16th February 2014 by Auw Jimmy

This is quite common tube, 300B by Shuguang. Nothing really special, only white ceramic tube socket, gold plated pins, and carbonized nickel plate. Let’s see how interesting this tube when the filament is powered.

The perforated design is interesting than regular solid plate on most tube. But perforated design is not as beautiful as mesh one. We can see more glowing filament with a mesh plate type.

Shuguang300B_1

Read the rest of this entry…

Tags: ,
Posted in Collectible Stuff, DIY Audio | Comments (2)




Posted on Sunday, 16th February 2014 by Auw Jimmy

EIMAC tube is well known as high power (we are talking ‘K’ in Volts). The current requirement also quite heavy. But the best thing from them is they are beautiful with Thoriated Tungsten filament. I’m collecting some EIMAC tube. And as I have no plan to use them in my project (I have no guts to play in ‘kiloVolts’ area), then the best way to enjoy this EIMAC tube is by powering the filament up. Below is Power Tetrode EIMAC 8165 or 4-65A. It requires 6V and 3A power supply to power its filament. EIMAC4-65A_1 Read the rest of this entry…

Tags: , , ,
Posted in Collectible Stuff, DIY Audio | Comments (0)




Posted on Sunday, 9th February 2014 by Auw Jimmy

I used to review a lot of stuff, including capacitor. But it comes upon a time when I have to be reviewed – I mean, my stuff. If you haven’t got any chance to understand this ‘No Name’ Capacitor stuff, feel free to review the journey below:

When I wrote a post asking for testing this capacitor few months ago, I got several dozens of emails. It seemed many were interested to try (and surprisingly I got a lot of silent reader who never commented but suddenly applied for testing the capacitor). Quite unfortunate due to the sample limitation (and also the price), I couldn’t fulfill all of the request. Only some who were considered qualified were chosen. By the way, I still received a lot of emails several months after I posted the ‘vacancy’. Some of my good friends also got privilege to test this special capacitor. One of them is Rob, from DHTRob.com. Rob has similarity with me. I would say: RGN, Tamura, and Black Gate WKz could describe our similarity. And surely he didn’t mine to borrow me his ears testing this capacitor and share his comment on his website here. Comparison between ‘No Name’ Capacitor and the legendary Black Gate WKz.

1-JimCaps-WKz

I believe Nichicon is not on the same league with this ‘No Name’ Capacitor, but what Rob says regarding the ‘no electrolytic signature’ and ‘no harshness’ are two keys that could describe the ‘No Name’ Capacitor sonic signature.

0-JimCapsDHTRob

 

 

Read the rest of this entry…

Tags: , , , ,
Posted in Collectible Stuff, DIY Audio, Indonesia | Comments (15)




Posted on Thursday, 6th February 2014 by Auw Jimmy

This is indeed a nice F5T (F5 Turbo) PCB. Well designed one, good option and flexibility, and surely good quality fabrication.

Time to shop for the parts? ;)

F5T

Read the rest of this entry…

Tags: , , , ,
Posted in Collectible Stuff, Indonesia | Comments (4)




Posted on Thursday, 16th January 2014 by Auw Jimmy

A bit tough later these days to find a good reclock module. Somehow, I was interested to try this one: TCXO Module from D/A Mental (a bit strange name, huh?).

The specification is quite promising, like below:

  • Frequency : 22.5792MHz
  • Precision : 1ppm
  • Operating voltage : +3.3Vdc
  • Operating current : 25mA (MAX)
  • Output Waveform : TTL/CMOS
  • Duty cycle : 40/60%
  • Frequency stability Vs Temp : +/- 5ppm (0 ~ +50 C)
  • Phase noise : -135dBc/1KHz(10M)
  • Package : 20.4 x 12.8 x 7.5mm
  • Aging : +/- 2ppm/Yr.

So far I used to be a big fans of TentLabs for his clock module. But lately Guido is hard to be reached. So alternative option should be considered… I would be more than interested to compare this vs TentLabs, but unfortunately I only have 27 and 12 MHz clock from TentLabs, and they are not TCXO.

TCXO

Read the rest of this entry…

Tags: , ,
Posted in Collectible Stuff, DIY Audio | Comments (0)





About Some Audio Parts for Sale !!!