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Analog Squared Paper Discussion and Appreciation Thread. - Page 186

post #2776 of 3473

the modder 's diary part 02:

 

today i finally got the parcel with the extended tu-05 case, a 2nd battery and some other parts from shikada san - and an envelope with a very nice and friendly letter, a nice picture on top and the best wishes for my mod - and best of all - A TU-05 SCHEMATIC - for me internally to help me!!!

 

i am am really proud and feel really honered - what a confidence to send me the heart of his amp and result of all his effort. was like christmas today to unpack everthing!

post #2777 of 3473

Hi GG, glad to hear that.

Looking forward for your next progress.

post #2778 of 3473
Quote:
Originally Posted by rudi0504 View Post
 
Quote:
Originally Posted by bmichels View Post

Great set-up ! What are your stock tubes ?

Thank you
I am sorry , this TU 05 is belong to my friend Bohringer
I will ask him for the stock tube
 
Quote:
Originally Posted by ianmedium View Post

That looks great Rudi, though I am really concerned about the size of jack going into the amp with the blue cable. These sockets are the mini ones and I find them not as strong. That looks huge and the weight alone could shorten the life of the socket i feel, great set up though, I love the gold!

Thank you Ian
His gold champagne edition size is longer as stock TU 05 , because he ordered with 6,3 mm and 4 Pin balance connector .
Because of these connector the housing is bigger .
The green cable is the green line cable from ALO with 6,3 mm connector .
The 3.5 mm connector is on the right site from 6,3 mm connector

 

Rudi, thanks for sharing, 

 

bmichels, my TU-05 is still using the stock tubes at that time : Raytheon 3S4 and Sylviana 1T4.

 

 

Ian, the blue cable comes with a 6.3mm (1/4") jack which is connected directly to the same size adapter (not to the mini adapter) on the TU-05.

Your concern regarding the durability of the mini jack is indeed noticed.

That's also one of the reason why I opted for the 3 adapters for my unit.

Thanks... :beerchug: 

post #2779 of 3473

the modder 's diary part 03:

 

After a very long time of searching i finally found what i was looking for to build the battery only driven power supply for my desktop tu-05:

 

Processed By eBay with ImageMagick, z1.1.0. ||B2

 

This is a Li-Ion battery charger / balancer module to connect and charge 16 x 3.7 volt Li-Ion batteries with one 67 volt power supply, at the same time the battery pack can be used, AND each battery has its own charger / controller so optimizing life time.

 

i bought two of them.

 

originally the boards were made for e-Bikes, the small version i ordered can deliver up to 30 ampere which means nearly 2 KW ! Should be sufficient for any tube amp i will ever build as i bought two of them (2x60 = 120 volt for example for dl93 ..dl98 tubes).


Edited by GermanGuy - 11/22/13 at 5:45am
post #2780 of 3473

it's really quiet here at the moment, but nevertheless posting what i have done this week up to now, so here is

 

the modder 's diary part 04:

 

finally found and ordered the 3.5mm connectors i will use:

 

CREATOR: gd-jpeg v1.0 (using IJG JPEG v62), quality = 100

 

http://www.voelkner.de/products/90437/Klinkeneinbaukupplung-3-5mm-3-polig-150204.html

 

they are made by Lumberg and as you see they are easy to mount, to solder, and the quality seems to be very good. also the connectors are nice looking when mounted on the frontpanel.

 

you won't believe, but this ultra small funny little pcb is a full functional dc/dc step down converter (with a dl92 tube for size comparison):

 

 

it can provide any voltage lower than the input voltage - 2 volt up to one ampere and can be adjusted even down to 1.4 or 1.25 volt. it's so small you even could mount it directly under each tube. i will use this pcb's for the filament / heater voltage. also you can use the boards to drive led's, but i found even smaller pcb's providing 1 to ten LED's with a constant current.

 

after my first try to make a frontpanel out of aluminium (really a hard job and material if you have only a small bench drill and no dedicated workbench with large tools, i now used doublesided copper plated pertinax:

 

 

i must say that Pertinax is much easier to cut and drill, also it has the benefit that it's much easier to paint than aluminium. to try also painting pertinax i mounted two pertinax pieces together before drilling to have two of them, the first to mount the components and the second as front panel:

 

 

i painted the front panel with five layers of DUPLICOLOR copper bronze effect laquer, while typing here the front panel has the night to get dry after 5 times beeing painted with clear varnish.

 

 

while this is also only a prototype to learn and exercise (the front panel is too small, i need a longer one for all the switches), a case made out of pertinax sheets and aluminium rods will look like this:

 

 

 

 

 

next week i will go to the local carpenter to get all the pertinax sheets cut for the final size case.


Edited by GermanGuy - 11/23/13 at 4:22pm
post #2781 of 3473
Good luck
post #2782 of 3473

the modder 's diary part 05:

 

today i just wanted to do something so i played around with the mini tu-05 components and to learn something about the possible size and the best way to place all the components i made a prototype using the tu-05 schematic as basis:

 

 

 

i don't expect just to switch it on and everything is running, the tubes are similar but not the same, but it is nice to learn debugging a tube amp, to find all the mistakes i shurely made. up to now i found no data sheet of the 5672 tubes with all the diagrams needed to calculate the resistors correctly, i have only some other schematics but with different operating voltages.

 

i think to get the mini tu-05 version running it's better to use a prototyping board, build only one channel and provide much more space between the components as then it is much easier to measure and change parts. for the final version to get it as small as possible a self designed pcb is a must.

post #2783 of 3473

Just received notification for my TU-06 from Shikada san........

 

"Your amplifier #00x has been completed.
I make from now a brown leather case of TUR-06.
I improved more stable circuit of TUR-06.
Stability of the low-frequency became very well.
It can also adjust the gain of each channel.
"

 

Hopefully before Christmas.

 

RWAK 120-S / TU-05

RWAK 100-S / TU-06

 

Everything else will be up for Sale..................


Edited by spkrs01 - 11/25/13 at 6:08am
post #2784 of 3473

Pssst....ShiKada-san :D.

 

But I'm looking forward to this TUR-06 mod. I'll mail him about the mod after I come back from my Oz trip.

post #2785 of 3473
Quote:
Originally Posted by AnakChan View Post
 

Pssst....ShiKada-san :D.

 

But I'm looking forward to this TUR-06 mod. I'll mail him about the mod after I come back from my Oz trip.

 

Thanks...

 

That was an actual "typo" rather than being disrespectful!!!

post #2786 of 3473
Quote:
Originally Posted by GermanGuy View Post

the modder 's diary part 05:

today i just wanted to do something so i played around with the mini tu-05 components and to learn something about the possible size and the best way to place all the components i made a prototype using the tu-05 schematic as basis:







i don't expect just to switch it on and everything is running, the tubes are similar but not the same, but it is nice to learn debugging a tube amp, to find all the mistakes i shurely made. up to now i found no data sheet of the 5672 tubes with all the diagrams needed to calculate the resistors correctly, i have only some other schematics but with different operating voltages.

i think to get the mini tu-05 version running it's better to use a prototyping board, build only one channel and provide much more space between the components as then it is much easier to measure and change parts. for the final version to get it as small as possible a self designed pcb is a must.

GG, once again, you leave this old brain of mine in the dust with your capabilities and ingenuity, it all looks fascinating!
Quote:
Originally Posted by spkrs01 View Post

Just received notification for my TU-06 from Shikada san........

"Your amplifier #00x has been completed.

I make from now a brown leather case of TUR-06.
I improved more stable circuit of TUR-06.

Stability of the low-frequency became very well.

It can also adjust the gain of each channel.
"

Hopefully before Christmas.

RWAK 120-S / TU-05
RWAK 100-S / TU-06

Everything else will be up for Sale..................

Wowzers! Gavin, your last statement says it all. How lucky we all are to be able to have such amazing designers to design equipment that brings us joy!

Quote:
Originally Posted by AnakChan View Post

Pssst....ShiKada-san biggrin.gif.

But I'm looking forward to this TUR-06 mod. I'll mail him about the mod after I come back from my Oz trip.

I wonder what he has done with the amp? And knowing Shikada San it won't cost a dime for the modifications (was going to abbreviate modifications but some wise-ass would have misinterpreted that in your case Sean wink.gif )

I downloaded the other night the new 24/192 Kind of Blue stereo mix from HDtracks ( and Yay, no more back door way of getting music from them, they now allow Canada!).

I have only ever heard this album on CD and I have to say it has always left me cold. I simply did not understand what everyone was raving about (those who have heard good vinyl copies) until Saturday night!

I sat there, in the dark (I do all my listening that way, lets my imagination flow!) listening to this album and realized I was listening to it for the first time. Incredible work they have done on this mix. I was completely engrossed in the music, and the combination of the amp, AK and T5P's or even more in this case, the PF's, well, it simply does not get better than this as far as I am concerned in portable audio! Highly recommend this album, so much so I am going to download the mono mix as well!
post #2787 of 3473
Quote:
Originally Posted by ianmedium View Post


GG, once again, you leave this old brain of mine in the dust with your capabilities and ingenuity, it all looks fascinating!
Wowzers! Gavin, your last statement says it all. How lucky we all are to be able to have such amazing designers to design equipment that brings us joy!
I wonder what he has done with the amp? And knowing Shikada San it won't cost a dime for the modifications (was going to abbreviate modifications but some wise-ass would have misinterpreted that in your case Sean wink.gif )

I downloaded the other night the new 24/192 Kind of Blue stereo mix from HDtracks ( and Yay, no more back door way of getting music from them, they now allow Canada!).

I have only ever heard this album on CD and I have to say it has always left me cold. I simply did not understand what everyone was raving about (those who have heard good vinyl copies) until Saturday night!

I sat there, in the dark (I do all my listening that way, lets my imagination flow!) listening to this album and realized I was listening to it for the first time. Incredible work they have done on this mix. I was completely engrossed in the music, and the combination of the amp, AK and T5P's or even more in this case, the PF's, well, it simply does not get better than this as far as I am concerned in portable audio! Highly recommend this album, so much so I am going to download the mono mix as well!

 

I bought that in the weekend too....

 

One word - Stunning!!

 

The atmospheric cues on this 24/192 file is simply amazing........................

 

 

Along with -

 

"Face Value" 24/192 - Phil Collins and find this hi-rez file, at last a file that betters the Steve Hoffman remaster

"New Moon Daughter" 24/192 - Cassandra Wilson, beautiful recording

 

and 

 

Mahler Symphony 7 DSD at $12 ...awesome value and highly recommended 

post #2788 of 3473
The Mahler is $12!!! I am on that like a dog in a butchers doorstep!
post #2789 of 3473
Gavin, I always get confused, do I do DFF or DSF DSD files for the AK or does it matter as long as they are 2.8?
post #2790 of 3473
Oh, and face value is my favorite Phil Collins album, had it on vinyl back in the day and CD so I think I will add that to my birthday presents to myself list ( hit the big five O this week!)
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