PEARL's Audio Note Series and Literature Archive




   

The Audio Note Series

 

AN 0.3

  The Index to the PEARL Vacuum Tube Technology Archive
Note that this document is updated approximately monthly as new items are uploaded to our site. All downloads presently available can be accessed through the PEARL Archive listings below.

150 KB

 

AN 0.4

  Vacuum Tube Electronics: A Review of the Major Texts:
Scott authoritatively reviews scores of the classic textbooks on vacuum tube theory, implementation, construction and so on . . . . highly recommended. Presented here with the permission of
Scott Frankland.

298 KB

 

AN 1.3

  PEARL Tube Coolers:
The 198 pg. PEARL Audio Note, “PEARL Tube Coolers and Equipment Reliability” provides both a present-day overview and several magazine reviews as well as an extensive overview of the period literature and patents.

14 MB

 
 

AN 1.5

  PEARL Tube Coolers - A Quick Start Guide:
A 4 page guide to the basic theory of operation and installation of our tube coolers

1 MB

 

AN 2.1.1

  A Little Input on Audio Output Transformers & Update:
Some basic transformer theory and specifications on PEARL's high power, ultra-wide bandwidth output transformers.
The Update covers ultra-linear operation implemented with a separate screen winding and regulated, screen power supply.

151 KB

 

AN 6.2

  Getting the Shake and Rattle Out of Your Rock and Roll: Suppressing Microphonic Output from Vacuum Tube Gear -
Information on microphony in general and PEARL Iso-sockets in particular.

76 KB

 

AN 7.1

  Iso-socket Installation Instructions:
The title says it all . . .

1 MB

 

AN 8.1

  The Measurement of Microphonic Effects in Vacuum Tubes:
A very informative discussion of microphony

68 KB

 
 

AN 9.1

  Making Contact with Your Tubes:
How to clean the heavy oxides from through-glass pins of tubes using same for connection with socket contacts.

60 KB

 
 

AN 23.1

  The PEARL SC 280 Monoblock - Notes on a Work in Progress:
Although the title does say it all, these notes were written in 1990/2 and although much work has been done since then, no notes documenting that work have been written as yet.

232 KB

 
 

AN 23.2

  The PEARL SC 280 Monoblock - Notes on a Work in Progress:
This is an Update to AN 23.1

356 KB

 

   

 

 

 

   

 


PEARL ARCHIVE OF VACUUM TUBE TECHNOLOGY


 

Download the index to the PEARL Vacuum Tube Technology Archive

150 KB


Volume 1 - Power Amplifiers


  Sec. 01   Amplifier Basics - 15 articles

Sec. 01

  Sec. 02   Ultra-linear Amplifiers - 23 articles

Sec. 02

  Sec. 03   Mcintosh Unity-coupled Amplifier

Sec. 03

  Sec. 04   Triode Connected Tetrodes

Sec. 04

  Sec. 05   Constant Current Output Stages

Sec. 05

  Sec. 06   The Williamson Amplifier

Sec. 06

     

 


Volume 2 - Power Amplifiers


Sec. 07    

Sec. 07

  Sec. 08    

Sec. 08

  Sec. 09    

Sec. 09

  Sec. 10    

Sec. 10

  Sec. 11    

Sec. 11

  Sec. 12    

Sec. 12

  Sec. 13    

Sec. 13


 

MISCELLANEOUS DOWNLOADS


  This page is posted as something of a precursor to the construction of our site. Here we've made available a number of PDF files that will eventually be available from our site's main navigation page(s). In the meantime, and so that those viewing posts archived on various list servers will find live links in the future we will keep this page as permanent resource.

Misc.
D'loads