Become a Site Supporter and Never see Ads again!
« previous next »
Pages: 1 2 [3] 4 5  All   Go Down

Author Topic: New Toys  (Read 15150 times)

0 Members and 1 Guest are viewing this topic.

Offline Lil Kim Jong-Il

  • Trade Count: (6)
  • Needs to get out more...
  • *****
  • Posts: 6498
  • large Marge sent me
Re: New Toys
« Reply #30 on: February 23, 2005, 04:25:32 PM »
Quote from: nmculbreth on February 23, 2005, 04:19:27 PM
It can't hurt to look.   :)

Yeah, right.  I've told myself that before.

Is there a guide for tubes with pictures?  I got extra sets of tubes from the previous owner of my amp and I can't read the labels on the small tubes, but maybe I can match up a pictures.

Are Ei tubes any good?  Thats what KT90s I have in there right now.
Logged
The first rule of amateur neurosurgery club is .... I forget.

Offline Nick Culbreth

  • Trade Count: (1)
  • Needs to get out more...
  • *****
  • Posts: 3084
  • Gender: Male
Re: New Toys
« Reply #31 on: February 23, 2005, 04:30:14 PM »
Quote from: El Barto on February 23, 2005, 04:25:32 PM
Yeah, right.  I've told myself that before.

Is there a guide for tubes with pictures?  I got extra sets of tubes from the previous owner of my amp and I can't read the labels on the small tubes, but maybe I can match up a pictures.

Are Ei tubes any good?  Thats what KT90s I have in there right now.

Ei tubes are generally considerered some of the best current production tubes.  I've never come across a tube picture guide but I'd love to try to put one together.  Any of you other tube guys interested?
Logged

Offline Tim

  • Trade Count: (1)
  • Needs to get out more...
  • *****
  • Posts: 32913
  • Gender: Male
Re: New Toys
« Reply #32 on: February 23, 2005, 04:30:48 PM »
I'd be glad to snap some pics of the tubes I have on hand
Logged
I’ve had a few weird experiences and a few close brushes with total weirdness of one sort or another, but nothing that’s really freaked me out or made me feel too awful about it. - Jerry Garcia

Offline bkirby

  • Trade Count: (0)
  • Taperssection Member
  • ***
  • Posts: 768
  • Gender: Male
  • Schoeps/MGs > M148/248 > SD722
Re: New Toys
« Reply #33 on: February 23, 2005, 05:12:53 PM »
I would be glad to take pictures of all of my tubes, but I don't have a digi camera. A digi camera and a vacuum cleaner are next on my list of things... :-[
Logged

Offline cheshirecat

  • Trade Count: (0)
  • Taperssection All-Star
  • ****
  • Posts: 1210
  • Gender: Male
Re: New Toys
« Reply #34 on: February 23, 2005, 05:14:00 PM »
I can also take some pictures, but this may get you going in the mean time:

http://www.valve-museum.org/
Logged
SB2 / Rega P1 > Modified Dynaco PAS2 > Modified Dynaco MK-IV monoblocks> Axiom M22 v2

Offline Tim

  • Trade Count: (1)
  • Needs to get out more...
  • *****
  • Posts: 32913
  • Gender: Male
Re: New Toys
« Reply #35 on: February 23, 2005, 05:50:58 PM »
If you got the money honey we got your disease
Logged
I’ve had a few weird experiences and a few close brushes with total weirdness of one sort or another, but nothing that’s really freaked me out or made me feel too awful about it. - Jerry Garcia

Offline Nick Culbreth

  • Trade Count: (1)
  • Needs to get out more...
  • *****
  • Posts: 3084
  • Gender: Male
Re: New Toys
« Reply #36 on: February 23, 2005, 06:51:51 PM »
This should be a fun little project and a nice reference to make sure you're getting legit tubes.  I've got the following covered:

12AU7
Amperex Orange Globe
RFT (In Transit)
Cifte (In Transit)
Sylvania Grey Plate

12AX7
Telefunken Smooth and Ribbed Plates
Amperex Orange Label
ElectroHarmonix 12AX7EH

5751
Sylvania Gold Brand 5751 (Grey Plate, Triple Mica)

6DJ8
Amperex Bugleboy
Amperex A Frame PQ

6922
JJ
ElectroHarmonix
Jan Phillips

Any other contributions would be welcome.  :)
Logged

Offline Tim

  • Trade Count: (1)
  • Needs to get out more...
  • *****
  • Posts: 32913
  • Gender: Male
Re: New Toys
« Reply #37 on: February 23, 2005, 06:54:14 PM »
you are a dirty slut Nick :P
Logged
I’ve had a few weird experiences and a few close brushes with total weirdness of one sort or another, but nothing that’s really freaked me out or made me feel too awful about it. - Jerry Garcia

Offline Nick Culbreth

  • Trade Count: (1)
  • Needs to get out more...
  • *****
  • Posts: 3084
  • Gender: Male
Re: New Toys
« Reply #38 on: February 23, 2005, 07:11:53 PM »
Quote from: Tim on February 23, 2005, 06:54:14 PM
you are a dirty slut Nick :P

Indeed.  It's not my fault.   :)

In actuality, I'm not completely satisfied with the Amperex 12AU7 and Sylvania 5751 combo so I'm trying to find a better mate for it.
Logged

Offline cheshirecat

  • Trade Count: (0)
  • Taperssection All-Star
  • ****
  • Posts: 1210
  • Gender: Male
Re: New Toys
« Reply #39 on: February 23, 2005, 07:27:01 PM »
Quote
This should be a fun little project and a nice reference to make sure you're getting legit tubes.  I've got the following covered:

There are also some key things to look for with different brands (many were mfg'd by a handfull of companys then OEM'd to others):
Telefunken small tubes nearly always have a <> diamond set into the glass between the pins
Mullard EL-34s have a hole in the guide tube and usually an xf# date code etched in the glass
Telefunken (the good ones) EL-34s have double halo getters
Telefunken's ink sluffs off very easily especially when hot
GE etched their info into many older tubes
RCA etched thier info with a {} bracket around it

I have all sorts of stuff around Off the top of my head:

EF-86 (6267)
Telefunken Shiny plate
Amperex BB mesh plate
Hitatchi ribbed plates (these sound like shit)
RCA large mesh plate

EL-34 (6CA7)
Amperex (by mullard) Orange Globe xf2 single halo
GE (by mullard) xf4 double halo
Mullard xf5 (forget the OEM on this one)
Westinghouse (china?)
Ruby EL-34STR
RCA Big Bottle
Sylvania Big Bottle
Raytheon Japan

GZ-34 (5AR4)
A few different Mullard types
Raytheon Japan
RCA big bottle
GE wide base

ECC83 (12ax7)
RCA Black plate
GE long grey plate (not sure where these pups are, may be in boston)
Mullard, multiple OEM labels
TFK both smooth and ribbed, multiple OEM labels
EI current production

ECC82 (12AU7)
TFK (I think no label on this one though, don't remember)
RCA clear top (branded borroughs?)
I have a few others, probably GE and RCAs

7199
RCA Black Plates(multiple OEM labels)
Sylvania Gray Plates(multiple OEM labels)


I have other stuff around if there are any particular types you're looking for, I can include those, I don't think I use anything from the 6922 family, so none listed, the above ones are the common Hi Fi amp/preamp tubes I use.

For reference, my playback:
Sony CDP??? > Eico HF-85 (TFK 12ax7s) > Dynaco ST-70 (Fully rebuilt using SDS Labs driver board, Mullard 5AR4 > RCA CT 12au7 > TFK EF-86 > Amperex EL-34s) > Large Advents (rebuilt X-over using Solen Caps)  <-- all vintage, all the time! ;D
Logged
SB2 / Rega P1 > Modified Dynaco PAS2 > Modified Dynaco MK-IV monoblocks> Axiom M22 v2

Offline Tim

  • Trade Count: (1)
  • Needs to get out more...
  • *****
  • Posts: 32913
  • Gender: Male
Re: New Toys
« Reply #40 on: February 23, 2005, 07:32:57 PM »
all I have are:

the stock chinese el34's that came with my asl
Svetlana el34's
JJ/Tesla ecc82 12au7's
Logged
I’ve had a few weird experiences and a few close brushes with total weirdness of one sort or another, but nothing that’s really freaked me out or made me feel too awful about it. - Jerry Garcia

Offline Nick Culbreth

  • Trade Count: (1)
  • Needs to get out more...
  • *****
  • Posts: 3084
  • Gender: Male
Re: New Toys
« Reply #41 on: February 23, 2005, 07:49:40 PM »
Quote from: cheshirecat on February 23, 2005, 07:27:01 PM
Quote
This should be a fun little project and a nice reference to make sure you're getting legit tubes.  I've got the following covered:

There are also some key things to look for with different brands (many were mfg'd by a handfull of companys then OEM'd to others):
Telefunken small tubes nearly always have a <> diamond set into the glass between the pins
Mullard EL-34s have a hole in the guide tube and usually an xf# date code etched in the glass
Telefunken (the good ones) EL-34s have double halo getters
Telefunken's ink sluffs off very easily especially when hot
GE etched their info into many older tubes
RCA etched thier info with a {} bracket around it


Good points, I'll add a bit more... Amperex and Siemens miniature tubes have visible ridges on the top of the tube, on some four ridges will be visible in other only two are, if they don't have ridges they're relabeled tubes.  Early tube manufacturers used chalky paint, some cleaver counterfeiters are manufacturing tubes in China with the Telefunken <> on the bottom but using the acrylic? label, if it doesn't rub of easily it's a fake.  Also if anyone is interested I've come across a factory code list which can be helpful to pinpoint where a specific tube was made, I'd attach but it's too big so PM or email me if you're interested.
Logged

Offline twoodruff

  • Trade Count: (91)
  • Needs to get out more...
  • *****
  • Posts: 4687
  • Gender: Male
Re: New Toys
« Reply #42 on: February 23, 2005, 08:28:11 PM »
is there a site to read about tubes and their different attributes, I think I am about to get a nice intergrated and am interested in what can change with the roll of a tube
Logged
No Mics
Clamps
Cables
No Preamp
Recorders

Offline Tim

  • Trade Count: (1)
  • Needs to get out more...
  • *****
  • Posts: 32913
  • Gender: Male
Re: New Toys
« Reply #43 on: February 23, 2005, 08:59:04 PM »
audioasylum is your friend :)

this is an faq about some various tubes
http://www.audioasylum.com/scripts/d.pl?audio/faq/joes-tubes.html

I just search the tube asylum a lot and read old threads. there's a lot of crap to wade through and the board features are pretty primitive but they've got a ton of great info

edit for valley girl speech pattern
Logged
I’ve had a few weird experiences and a few close brushes with total weirdness of one sort or another, but nothing that’s really freaked me out or made me feel too awful about it. - Jerry Garcia

Offline ducati

  • Trade Count: (3)
  • Taperssection Member
  • ***
  • Posts: 572
  • I'm a llama!
Re: New Toys
« Reply #44 on: February 24, 2005, 08:25:29 AM »
Quote from: El Barto on February 23, 2005, 04:25:32 PM
Quote from: nmculbreth on February 23, 2005, 04:19:27 PM
It can't hurt to look.   :)

Yeah, right.  I've told myself that before.

Is there a guide for tubes with pictures?  I got extra sets of tubes from the previous owner of my amp and I can't read the labels on the small tubes, but maybe I can match up a pictures.

Are Ei tubes any good?  Thats what KT90s I have in there right now.

The Ei KT90 is an odd tube.  It is rumored to be a modified TV tube in a bottle that looks somewhat like a fatter EL34 (with a cool little tip), and made to slot into an amp that normally uses 6550's.  It doesn't produce as much peak voltage as a true 6550 (somewhere on the order of 20% less IIRC) which is a significant decrease from a true 6550, and points to the modified TV tube roots.  Some people really like this tube; I haven't tried it because of the odd lineage, and the fact it might not bias correctly in some amps (especially my ARC which doesn't have a huge range on it's bias pots)... 

What amp do you own?  I'd be interested to see who's using these as stock items.
Logged
Pages: 1 2 [3] 4 5  All   Go Up
« previous next »
 

RSS | Mobile
Page created in 0.079 seconds with 39 queries.
© 2002-2024 Taperssection.com
Powered by SMF