« previous next »
Pages: [1]   Go Down

Author Topic: FS: 6N30P-DR  (Read 4404 times)

0 Members and 1 Guest are viewing this topic.

Offline YuriyTopic starter

  • Regular Contributor
  • *
  • !
  • Posts: 52
  • Country: ru
    • Radiomurman
FS: 6N30P-DR
« on: May 23, 2015, 04:13:04 pm »
Sale 6N30P-DR - 5 pcs. for $130 each.
Logged
 

Offline c4757p

  • Super Contributor
  • ***
  • Posts: 7799
  • Country: us
  • adieu
Re: FS: 6N30P-DR
« Reply #1 on: May 23, 2015, 04:30:30 pm »
$130 for a single vacuum tube? What makes them special?
Logged
No longer active here - try the IRC channel if you just can't be without me :)
 

Offline YuriyTopic starter

  • Regular Contributor
  • *
  • !
  • Posts: 52
  • Country: ru
    • Radiomurman
Re: FS: 6N30P-DR
« Reply #2 on: May 23, 2015, 04:32:59 pm »
Logged
 

Offline c4757p

  • Super Contributor
  • ***
  • Posts: 7799
  • Country: us
  • adieu
Re: FS: 6N30P-DR
« Reply #3 on: May 23, 2015, 04:36:37 pm »
I see they sell for much higher - I'm not trying to challenge your price, I'm genuinely asking you - what makes them special?
Logged
No longer active here - try the IRC channel if you just can't be without me :)
 

Offline YuriyTopic starter

  • Regular Contributor
  • *
  • !
  • Posts: 52
  • Country: ru
    • Radiomurman
Re: FS: 6N30P-DR
« Reply #4 on: May 23, 2015, 04:42:15 pm »
I do not know honestly.
Logged
 

Offline T3sl4co1l

  • Super Contributor
  • ***
  • Posts: 21856
  • Country: us
  • Expert, Analog Electronics, PCB Layout, EMC
    • Seven Transistor Labs
Re: FS: 6N30P-DR
« Reply #5 on: May 23, 2015, 05:23:10 pm »
http://www.tubeampdoctor.com/images/File/Specifications%206N30P.pdf

Looks roughly like a dual 12B4 with higher gain (possibly frame grid?).  Would be good for pass regulation (original application), or preamp line drivers / headphones amplifiers, possibly OTL (these days).

As for audiophool pricing, who knows?

Tim
Logged
Seven Transistor Labs, LLC
Electronic design, from concept to prototype.
Bringing a project to life?  Send me a message!
 

Offline wraper

  • Supporter
  • ****
  • Posts: 17062
  • Country: lv
Re: FS: 6N30P-DR
« Reply #6 on: May 23, 2015, 05:50:59 pm »
Seems that they are made by nude virgins. People write that they are ultra-linear and introduce almost no harmonics.
Logged
 

Offline c4757p

  • Super Contributor
  • ***
  • Posts: 7799
  • Country: us
  • adieu
Re: FS: 6N30P-DR
« Reply #7 on: May 23, 2015, 05:53:54 pm »
I am of the impression that people who want "ultra-linear" tubes have no idea what feedback does. ::)
Logged
No longer active here - try the IRC channel if you just can't be without me :)
 

Offline wraper

  • Supporter
  • ****
  • Posts: 17062
  • Country: lv
Re: FS: 6N30P-DR
« Reply #8 on: May 23, 2015, 06:17:13 pm »
Quote from: c4757p on May 23, 2015, 05:53:54 pm
I am of the impression that people who want "ultra-linear" tubes have no idea what feedback does. ::)
Feedback is a taboo for tube fans.
Logged
 

Offline mikeselectricstuff

  • Super Contributor
  • ***
  • Posts: 13804
  • Country: gb
    • Mike's Electric Stuff
Re: FS: 6N30P-DR
« Reply #9 on: May 23, 2015, 06:21:39 pm »
Quote from: wraper on May 23, 2015, 05:50:59 pm
Seems that they are made by nude virgins. People write that they are ultra-linear and introduce almost no harmonics.
What, so just like a transistor then.... :palm:
Logged
Youtube channel:Taking wierd stuff apart. Very apart.
Mike's Electric Stuff: High voltage, vintage electronics etc.
Day Job: Mostly LEDs
 

Offline wraper

  • Supporter
  • ****
  • Posts: 17062
  • Country: lv
Re: FS: 6N30P-DR
« Reply #10 on: May 23, 2015, 07:25:26 pm »
Quote from: mikeselectricstuff on May 23, 2015, 06:21:39 pm
Quote from: wraper on May 23, 2015, 05:50:59 pm
Seems that they are made by nude virgins. People write that they are ultra-linear and introduce almost no harmonics.
What, so just like a transistor then.... :palm:
Yep, people say that there is no "tube" sound  :-DD.
Logged
 

Offline c4757p

  • Super Contributor
  • ***
  • Posts: 7799
  • Country: us
  • adieu
Re: FS: 6N30P-DR
« Reply #11 on: May 23, 2015, 07:44:42 pm »
Quote from: wraper on May 23, 2015, 06:17:13 pm
Quote from: c4757p on May 23, 2015, 05:53:54 pm
I am of the impression that people who want "ultra-linear" tubes have no idea what feedback does. ::)
Feedback is a taboo for tube fans.

As is common sense, sometimes.

Quote from: mikeselectricstuff on May 23, 2015, 06:21:39 pm
Quote from: wraper on May 23, 2015, 05:50:59 pm
Seems that they are made by nude virgins. People write that they are ultra-linear and introduce almost no harmonics.
What, so just like a transistor then.... :palm:

Huh? BJTs are almost purely exponential, that's about as nonlinear as you can get... much, much less linear than tubes... you have to linearize them with negative feedback. FETs are in between.
Logged
No longer active here - try the IRC channel if you just can't be without me :)
 

Offline wraper

  • Supporter
  • ****
  • Posts: 17062
  • Country: lv
Re: FS: 6N30P-DR
« Reply #12 on: May 23, 2015, 08:30:10 pm »
Quote from: c4757p on May 23, 2015, 07:44:42 pm

Quote from: mikeselectricstuff on May 23, 2015, 06:21:39 pm
Quote from: wraper on May 23, 2015, 05:50:59 pm
Seems that they are made by nude virgins. People write that they are ultra-linear and introduce almost no harmonics.
What, so just like a transistor then.... :palm:

Huh? BJTs are almost purely exponential, that's about as nonlinear as you can get... much, much less linear than tubes... you have to linearize them with negative feedback. FETs are in between.
I guess he means it terms of sound. That such tube amplifier will sound like transistor amp without "tube" coloring.
Logged
 
Pages: [1]   Go Up
« previous next »

Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf

 


EEVblog Main Site EEVblog on Youtube EEVblog on Twitter EEVblog on Facebook EEVblog on Odysee