Let's see your tubes!

shoot · « **Reply #1100 on:** 3 Jun 2014, 04:43 pm »

Quote from: adrianc on 3 Jun 2014, 04:27 pm

How did they sound when compare to your R7 version?

they sounds nature and plain,650 R7 R6 sounds much more transparent and gorgeous in high range.I like both of them.

adrianc · « **Reply #1101 on:** 3 Jun 2014, 04:59 pm »

Thanks, 650 R6 Square getter still,to me,are the best sounding ECC81 money can buy,I think what makes them special are the S shade metal pieces on the top mica which you will never find them in other ECC81

FullRangeMan · « **Reply #1102 on:** 3 Jun 2014, 09:23 pm »

Quote from: adrianc on 3 Jun 2014, 04:59 pm

Thanks, 650 R6 Square getter still,to me,are the best sounding ECC81 money can buy,I think what makes them special are the S shade metal pieces on the top mica which you will never find them in other ECC81

Hi Adrianc,
I have some 6N1P which have bend the mica points just like this image.
Same for corroded pins.
Do you think these two abnormalities are probs??

adrianc · « **Reply #1103 on:** 3 Jun 2014, 09:48 pm »

Hi FULLRANGEMAN, I think this are pretty normal and all depend during the assembly procedure,just my 2 cents

FullRangeMan · « **Reply #1104 on:** 3 Jun 2014, 10:10 pm »

Thanks, I more relieved now.

adrianc · « **Reply #1105 on:** 4 Jun 2014, 11:50 am »

Found more EL34 Metal base

shoot · « **Reply #1106 on:** 4 Jun 2014, 03:08 pm »

Your house is a goldmine.wanna rob you

Guy 13 · « **Reply #1107 on:** 4 Jun 2014, 04:14 pm »

Yes, don't tell your address to anyone.

Guy 13

miglto · « **Reply #1108 on:** 4 Jun 2014, 04:45 pm »

shoot · « **Reply #1109 on:** 5 Jun 2014, 02:57 am »

Quote from: Adriano on 23 May 2014, 10:55 pm

Woh! Which factory production?
May i have a photo?

Let you have a glimpse of the bottom.

mar,1951 from philips laboratory,maybe the earlist ecc81 of philips ecc81 family.

adrianc · « **Reply #1110 on:** 5 Jun 2014, 10:59 am »

Quote from: shoot on 4 Jun 2014, 03:08 pm

Your house is a goldmine.wanna rob you

adrianc · « **Reply #1111 on:** 5 Jun 2014, 11:04 am »

Quote from: Guy 13 on 4 Jun 2014, 04:14 pm

Yes, don't tell your address to anyone.

Guy 13

Hi Guy,I was thinking to send my address to shoot

Found few more GZ34 Metal base

Guy 13 · « **Reply #1112 on:** 5 Jun 2014, 11:16 am »

Quote from: adrianc on 5 Jun 2014, 11:04 am

Hi Guy,I was thinking to send my address to shoot
Found few more GZ34 Metal base

Hi adrianc.
If one day you run out of warehouse space,
I have a huge warehouse here on planet Vietnam,
the only problem is that once it's here,
it will stay here.... Forever !
For me

and

for you.

Guy 13

adrianc · « **Reply #1113 on:** 5 Jun 2014, 11:21 am »

Quote from: shoot on 5 Jun 2014, 02:57 am

Let you have a glimpse of the bottom. mar,1951 from philips laboratory,maybe the earlist ecc81 of philips ecc81 family.

Disc getter ?

shoot · « **Reply #1114 on:** 5 Jun 2014, 12:30 pm »

Quote from: adrianc on 5 Jun 2014, 11:21 am

Disc getter ?

yes,and welded black plates coin bottom

adrianc · « **Reply #1115 on:** 5 Jun 2014, 01:55 pm »

Quote from: shoot on 5 Jun 2014, 12:30 pm

yes,and welded black plates coin bottom

Like to see the whole valve if possible.

adrianc · « **Reply #1116 on:** 6 Jun 2014, 01:03 pm »

Quote from: adrianc on 5 Jun 2014, 01:55 pm

Like to see the whole valve if possible.

NO PICTURES ?????

shoot · « **Reply #1117 on:** 18 Jun 2014, 06:20 pm »

Quote from: shoot on 24 May 2014, 01:09 pm

3 same code.

but.........

3 tubes with same code but 1 is disc getter and the other 2 are D getter.

Now lets see what philips has done in 1951

prokennex · « **Reply #1118 on:** 19 Jun 2014, 12:42 am »

Black Treasures 6ca7

Roger A. Modjeski · « **Reply #1119 on:** 19 Jun 2014, 12:53 am »

Quote from: FULLRANGEMAN on 3 Jun 2014, 09:23 pm

Hi Adrianc,
I have some 6N1P which have bend the mica points just like this image.
Same for corroded pins.
Do you think these two abnormalities are probs??

The bent mica points on the outer edge of the top mica are quite intentional and proper. They provide a tight fit for the mount (the stuff between the top and bottom mica) and the glass. If they weren't bent they might not touch and things would rattle around.

Also note the little raised hook on the top mica that holds down the cathode. That reduces microphonics. These tubes look perfect.

l don't think the shape of the getter makes any difference in the sound. The tube manufacturer just buys them from the getter guy. However it may help identify a particular vintage of manufacture as the getter guy does not always have the same stuff and sometimes he has new, better stuff. From my studies it appears that D getters came before round "halo" getters which are an improvement as they distribute the getter material more uniformly. Perhaps that is why they were invented. Why D getters are preferred is a mystery to me. They don't do nearly as good a job as halo getters.