The audience microphones — capturing the crowd’s reactions — were placed differently, necessarily recording more of the room’s reflection. The asymmetry between the band’s dry close-miked sound and the crowd’s room-influenced sound is audible on the album and is part of what makes it feel like a document of a specific space rather than a constructed sonic illusion.
Johnston’s decision not to apply equalization to the signal before recording — to let the microphones capture what they captured without electronic adjustment — was consistent with his stated production philosophy. EQ is a tool that shapes how a recording sounds, boosting or cutting specific frequency ranges to make a voice or instrument sit differently in the mix. Its absence in the Folsom recording means that what listeners hear is as close as the technology allowed to what the microphones heard: the actual sound of the instruments, the actual sound of Cash’s voice, in the actual acoustic environment of that cafeteria.
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## What Editing Changed
The post-production process that turned two full concerts into a commercial LP involved choices that the finished album does not make visible.
Tracks were selected from one or both shows. The running order was adjusted from the performance sequence. Some performances were cut shorter than their live duration. The specific edits made — where the knife fell in the tape, what went before and after it — are decisions that shaped the album the listener knows.
The most significant categories of editing change were the sequencing changes and the cuts for time. The LP format in 1968 held approximately 22 to 24 minutes of audio per side, which meant that a 45-minute album required two sides of vinyl. The full morning performance was longer than 45 minutes. Choices had to be made about what to include and in what order.