TubeNexus

Electro-Voice Professional Sound Reinforcement Products used to provide Builder’s Plans for a series of speaker cabinets called the “TL Series Low-Frequency Loudspeaker Systems.”
The TL806 was a small ported cabinet designed specifically for the EVM12L:

While browsing my personal RSS feeds at lunch I happened upon a Google Blog Search result where the author was exploring how to choose the correct signal chain for your effects pedals. I wouldn’t have found this blog otherwise, as my searches lean towards gear and tube-based gear in particular.

For many, the Dumble amplifier is the holy grail of electric guitar tone. Its caché is helped by the rarity of the actual amplifiers and the famous (and talented) guitarists that favour the amp.

Hope the title didn’t send you fleeing!
I was first introduced to Pentode Press and Richard Kuehnel when I was searching for some detailed design information on the Fender 5F6-A.