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Analog Squared Paper Discussion Thread. - Page 180

post #2686 of 3704
I going to an all Philips combination today and going to give it a good week of listening even though all tubes are well burned in.

So funny as I always think of Philips as a Dutch company and yet the tubes are German and English!
post #2687 of 3704
Very few news or comments about the little brother TUR-06 !? Are They posted some where else on another thread or forum ?
post #2688 of 3704

yesterday i used the 4 ohm secondary output of the tango transformers (together with the 5k primary input resulting in a 8 to 16 ohm headphone impedance range)

 

- to listen to the fad pf viii and the akg k3003

 

i spent not enough time with the pf viii and have not listened to them for a while, so can not really compare it, sound is midcentric (as the pf viii may sound), but never heard it that wide and out of head - remarkable

 

the akg k3003 (with the high / treble filters, in fact the high filters are the only ones that are not filters, but just metal meshs) sounds outstanding with the new output transformers.

 

great soundstage, wide and deeeeeeeeeeeeeep, precise from top to bottom, great imaging, but the bass .... never heard it that deep, great extension, texture, tight, precise, and the bass, when listeneing to Adrian Lucas, Cathederal Caleidoscope, your head, ears, neck start to vibrate with the bass and interferences of the big bass pipes, you can feel it, an unbelievable improvement, you can hear even the smallest resonances, absolutely clear, separable, the best bass and bass detail i ever heard.


Edited by GermanGuy - 11/10/13 at 2:10pm
post #2689 of 3704

i am learning a lot these day playing around with my tu-05 on a wooden plate:

 

- for my desktop build i need a larger housing than i thought to have enough space on the front panel for all the switches i need and in general to internally separate power supply (if not placed in another case), amplifier channels and stages, input attenuator, impedance selection, output transformers

 

- never measure the voltages of the internal power supply without the connection to the amp (have known this before but life is based on trial and error) as long as you don't want to see smoke and no led lights power.

 

- maybe i need an additional output transformer with primary 7 KOhm as i think the fad pf viii is better sounding with 7 KOhm primary / 8 ohm secondary impedance setting

 

- the voltagefor the tube filaments / heater  are interestingly 1,31 volt  so slightly lower than the 1,4 volt the tubes are specified with

 

- the anode voltages for the df91 and dl92 were about 57 and 53 volts, about after the funny smells, smoke and oops event both voltages are about 57 volts.

 

the grid and anode voltages mean that the dl92 tubes should have an output impedance of about 5kohm, i am glad to have choosen the right output transformers.

 

- think i will also make my own internal power supply board for the portable version to save a lot of space, but also to provide switches to separately switch LED lights, heater and anode voltage on/off.

 

- the benefit of separate power switches is

 

- that you can save the energy not only of the LED's but also the energy needed / wasted by the internal switching power supply part for the led's

 

- in military tube equipment often or sometimes there was an automated power on/off implemented, firstly switching on the heater / filament voltage and then after 3 minutes the grid / anode voltages and vice versa, which is not only a good procedure for the tubes and tube lifetime, but in case of the tu-05 (SET amp)

 

- you can heat the tube up to operational temperature without magnetizing the output transformers due the the constant dc current without signal.

 

- found a german company that makes custom front panes out of any material you want, up to 10mm thick, round, elliptical, rounded edges, whatever you want, to design the front panel you can download their front panel cad design software, even painting or the lettering can be done.


Edited by GermanGuy - 11/10/13 at 2:38pm
post #2690 of 3704

posting this again - when removing the original output transformers i found them significantly MAGNETIZED !

 

as this will result in a sound degradation, i want to ask if you ever have checked your output transformers, mine were magnetized in a way that you could feel it for example when touching them with an iron screw driver!

post #2691 of 3704
bmichels - could you post the source for the cryo lcofc wires you bought again?
post #2692 of 3704
Quote:
Originally Posted by GermanGuy View Post

bmichels - could you post the source for the cryo lcofc wires you bought again?

http://www.casques-headphones.com/53-cables-pour-casques-modulation-et-secteur
post #2693 of 3704
i always tought and thought how to best describe what makes the sound of the tu-05 so exceptional for me and now found this explanation:

the sound and the presentation is like a fractal or mandelbrot set , you always get the hole picture, and when you zoom in, listening to one specific detail, you again find the same precision, detail, air, overall sound, each sinlge object resolved to an level that is just great.
post #2694 of 3704

 



thanks a lot!
post #2695 of 3704

Guys, I need your input on the tubes rolling.

I really lost.

I know there's a recap on the first page, but I think I still need more advice.

 

Today, I was be able to look on the tubes that I have so far.

There are still several tubes that need to be compiled, but here's the collection.

 

Sorry for the brutal image. :D

 

The 1T4 / DL91

 

 

The 1U4 / DF904

 

 

The 3S4 / DF92

 

I'm still burning the stock tubes to be settled-in, please kindly guide me which pair I should burn next?

Thanks.


Edited by Boringer - 11/11/13 at 12:44am
post #2696 of 3704

I found this Philips Miniwatt quite interesting... :L3000:

 

Do you think, they're used one? :blink:

 

 

 


Edited by Boringer - 11/11/13 at 12:46am
post #2697 of 3704

Where did you get the PHILCO 1T4 from ?

post #2698 of 3704
Quote:
Originally Posted by GermanGuy View Post
 

Where did you get the PHILCO 1T4 from ?

 

Hi GG, I got it from this seller : http://www.ebay.com/itm/1T4-2-new-TUBES-Matched-Dates-VINTAGE-CONSUMER-ELECTRONICS-AUDIO-RADIOS-/290621292514?pt=Vintage_Electronics_R2&hash=item43aa60ffe2

post #2699 of 3704

Quote:

Originally Posted by GermanGuy View Post

i always tought and thought how to best describe what makes the sound of the tu-05 so exceptional for me and now found this explanation:

the sound and the presentation is like a fractal or mandelbrot set , you always get the hole picture, and when you zoom in, listening to one specific detail, you again find the same precision, detail, air, overall sound, each sinlge object resolved to an level that is just great.

 

Sorry been very busy this couple of days. even don't have time to open my computer  :D.. 6000 euros and counting,, that is just amazing. I can see how much you love the tu-05. from your impression on tu-05 that is exactly what i am looking for. full sound in every area..

 

Just tried the ak100 stock with some dsd files.. it has about the same impression as yours GG for my tur06. it gives full sounds if you have a very good source.

 

@Boringer thank u for your generous invitation. But i have not got any plan to go to Jakarta in near time. If you go to Bandung just let me know.  :beerchug:

post #2700 of 3704
Quote:
Originally Posted by Boringer View Post

Guys, I need your input on the tubes rolling.
I really lost.
I know there's a recap on the first page, but I think I still need more advice.

Today, I was be able to look on the tubes that I have so far.
There are still several tubes that need to be compiled, but here's the collection.

Sorry for the brutal image. biggrin.gif

The 1T4 / DL91 Warning: Spoiler! (Click to show)
Warning: Spoiler! (Click to show)




The 1U4 / DF904




The 3S4 / DF92

I'm still burning the stock tubes to be settled-in, please kindly guide me which pair I should burn next?
Thanks.

Grab a set of these: http://www.ebay.ca/itm/PHILIPS-DF96-1AJ4-NOS-tube-made-in-Germany-/300723125087?pt=Vintage_Electronics_R2&hash=item46047ebb5f&_uhb=1&clk_rvr_id=546104473735

And pair them with (what I think are) Mullards on the bottom of your 3s4 stack. My th900's truly shine with this combo!
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