Head-Fi.org › Forums › Equipment Forums › Portable Headphone Amps › Analog Squared Paper Discussion and Appreciation Thread.
New Posts  All Forums:Forum Nav:

Analog Squared Paper Discussion and Appreciation Thread. - Page 154

post #2296 of 3489
okay, forget this bird cage sand, in fact very very small stones, damaged two wood disks with. i went down to the beach volleyball field, got the usual very fine sand, made a mixture of sand, tooth paste and alcohol, then cleaning the pins of each tube for one minute:



clean enough?
Edited by GermanGuy - 9/20/13 at 1:22pm
post #2297 of 3489
Quote:
Originally Posted by ianmedium View Post

GG, I am at the moment sourcing some garnet powder in a small enough quantity as I remember a jeweller friend used to use that to polish precious metal to great effect. Once I do I will let you know how the kit works!


could be really the best choice. with the bird cage sand the inner part of two wood disks broke away, so sand or better pouder, something really fine with very small particles is recommended.
Edited by GermanGuy - 9/20/13 at 1:19pm
post #2298 of 3489
next double post deleted - sometimes i hate my tablet - ok, at least the post count increases.
Edited by GermanGuy - 9/20/13 at 1:15pm
post #2299 of 3489
Quote:
Originally Posted by GermanGuy View Post

Quote:
Originally Posted by ianmedium View Post

GG, I am at the moment sourcing some garnet powder in a small enough quantity as I remember a jeweller friend used to use that to polish precious metal to great effect. Once I do I will let you know how the kit works!


could be really the best choice. with the bird cage sand the inner part of two wood disks broke away, so sand or better pouder, something really fine with very small particles is recommended.

Garnet powder is much much finer than sand of any grade. Its more like fine dust.

post #2300 of 3489
Quote:
Originally Posted by ianmedium View Post


Garnet powder is much much finer than sand of any grade. Its more like fine dust.

 

looks like spain minus portugal :smile: 

 

edit:

 


Edited by GermanGuy - 9/20/13 at 4:55pm
post #2301 of 3489
Quote:
Originally Posted by GermanGuy View Post
 

 

did you test the opposite side? seeing the pictures you and ianmedium have posted, you both place the tu-05 side panel side with the switches on top.

 

i did just the opposite, placing the side with the switches on the bottom side because the side with the switches is also the side where the output transformers and other components are mounted, assuming this side is where most of the resonances can be absorbed!

 

would be very interested in your results doing the same.

 

I would love to try, but my TU-05 is connected to my HEX dac and the hassle of plugging and unplugging cables is too bothersome at present. I will try on Monday when I move things around a little.

 

 

Quote:
Originally Posted by bmichels View Post
 

Very impressive solution Ian, and surely NOT Amateur at all !! I am tempted to use it also.   I may just try to replace may be your by some "nicer" ceramic cone to try.

 

buy, is the the granite support base really necessary ?  it is indeed the most heavy and inconvenient part for building/moving around id needed !   Have you tested your solution without it, just the big  3/4" slab of marine ply as a base ?  

 

Also van you post a profile picture  of the solution that show the layers under the 3/4" slab of marine ply  ( Granit - blocs of Blu-Tac)

 

Finaly, Spkrs01 mention a " Shakti Stone " !  what is it ?  is it like the granite you are using or some more exotic/hard to find stone ? 

 

http://www.shakti-innovations.com/audiovideo.htm

post #2302 of 3489
Quote:
Originally Posted by bmichels View Post

Very impressive solution Ian, and surely NOT Amateur at all !! I am tempted to use it also.   I may just try to replace may be your by some "nicer" ceramic cone to try.

buy, is the the granite support base really necessary ?  it is indeed the most heavy and inconvenient part for building/moving around id needed !   Have you tested your solution without it, just the big  3/4" slab of marine ply as a base ?  

Also van you post a profile picture  of the solution that show the layers under the 3/4" slab of marine ply  ( Granit - blocs of Blu-Tac)

Finaly, Spkrs01 mention a " Shakti Stone " !  what is it ?  is it like the granite you are using or some more exotic/hard to find stone ? 

The granite I have found is a great stabilized base. You could do it without but it would not be the same in my experience. Of course the piece I have is big (It was a free off cut at my local stone masons) but you could get a piece just slightly bigger. Another, lighter alternative would be to use two sheets of aluminum with Blu-Tac sandwiched between them to replicate in a way the Nagra set up. This is my next thing to try and I will report back..


The Blu-Tac is also between the ply and Granite and also I forgot to mention, between the granite and table I rest it all on.
post #2303 of 3489

http://www.tubes.rs/1T4_DF91_Mazda_Cifte_France/

 

this company advertises this tube as now very popular type for battery powered analog squared paper amps !!!

post #2304 of 3489
This is the guy I bought mine from on ebay and I can personally vouch for his excellent tubes, they are the same as the ones you show GG. The fellow you have shown GG tried to sell me two telefunken's for $76 which is outrageous for this type of tube!

This seller is very reasonable and his tubes excellent quality.
http://www.ebay.ca/itm/1T4-Cifte-1T4-DF91-W17-1K2-CV785-NIB-/181171373581?pt=FR_JG_Collections_Radios&hash=item2a2ea7c60d
post #2305 of 3489
Quote:
Originally Posted by ianmedium View Post

This is the guy I bought mine from on ebay and I can personally vouch for his excellent tubes, they are the same as the ones you show GG. The fellow you have shown GG tried to sell me two telefunken's for $76 which is outrageous for this type of tube!

This seller is very reasonable and his tubes excellent quality.
http://www.ebay.ca/itm/1T4-Cifte-1T4-DF91-W17-1K2-CV785-NIB-/181171373581?pt=FR_JG_Collections_Radios&hash=item2a2ea7c60d

 

Yep, but... no holes... :-)

 

 

post #2306 of 3489
GRRR!
post #2307 of 3489
Quote:
Originally Posted by GermanGuy View Post

GRRR!

 

Wafff Wafff 

post #2308 of 3489
Grandster, I can't see the image you posted, welcome, are you an ASP owner or thinking of getting one?

Bmichels, that is a heck of a lot of money for holes.. I think I will pay 90% less and live without holes wink.gif
post #2309 of 3489
Quote:
Originally Posted by ianmedium View Post

Grandster, I can't see the image you posted, welcome, are you an ASP owner or thinking of getting one?

Bmichels, that is a heck of a lot of money for holes.. I think I will pay 90% less and live without holes wink.gif

Hey ianmedium, you said that the mullard dl92's are the exact same thing as the philips miniwatt dl92's right?

 

So would these be ok?

 

http://www.ebay.com/itm/DL92-N17-3S4-1P10-MULLARD-EVEREADY-OTHERS-NEW-OLD-STOCK-VALVE-TUBE-J13-/370833952317?pt=UK_Sound_Vision_Valves_Vacuum_Tubes&hash=item56576d0e3d

 

http://www.ebay.com/itm/3S4-DL92-CV820-MULLARD-NOS-/260765283638?pt=UK_Sound_Vision_Valves_Vacuum_Tubes&hash=item3cb6d27536

post #2310 of 3489
if he has two of the Marconi's jump on them! Otherwise in the other listing they are the mil speck Mullards. I have purchased from this seller and they are excellent and sound the same as the phillips i have but with a little more bass.

On to other tube news. Next week see's the arrival of two new tubes for me!! Very excited about these two as they come in a special case... biggrin.gif

CREATOR: gd-jpeg v1.0 (using IJG JPEG v62), quality = 90

Lets just say Flavor flav has nothing on me..biggrin.gif
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Portable Headphone Amps
Head-Fi.org › Forums › Equipment Forums › Portable Headphone Amps › Analog Squared Paper Discussion and Appreciation Thread.