
The JMI™ 30/6 is a vintage 2×12 cabinet manufactured by Jennings Musical Industries — the British company that originally produced VOX amplifiers in the 1950s and 1960s.
JMI cabinets share a tonal lineage with the early VOX AC30 and AC15 — open-back British construction, traditional cabinet-making methods, and a focus on the chiming top-end and naturally compressed midrange that defined the British Invasion guitar sound.
This cabinet is loaded with original JMI Made-in-England Blue 12-inch speakers — vintage British drivers from the same era and production lineage as the cabinet itself, now extremely difficult to source in matched pairs and working condition.
A reference capture of vintage British guitar tone — recorded by selecting only the single best-sounding position for each microphone, rather than offering rows of distance and angle variations. Paired with your IR-compatible amp simulator or plug-in, the JMI cabinet's chiming top end and naturally compressed midrange respond to your picking dynamics — moving freely between clean, edge-of-breakup, and lightly overdriven territory right under your fingertips.
- ModelJMI 12" Blue
- OriginMade in England (JMI)
- MagnetAlnico
- Quantity×2


— Available in 96kHz / 48kHz / 44.1kHz
Microphones Used
01 / dynamic
57IIISM57 Unidyne III
based on a Shure™ SM57 Unidyne III
The most-used dynamic mic in rock history. Tight, punchy midrange — the standard close-mic on guitar cabs since the 1960s.
02 / ribbon
VR1
based on a sE Electronics™ VR1
Ribbon microphone with warm, smooth low-mids. Tames harshness and adds a vintage-tape character.
03 / dynamic
906e906
based on a Sennheiser™ e906
Modern dynamic with flat-design body — sits flush against the grill. Tight midrange focus, easy to position.
04 / dynamic
M421MD421
based on a Sennheiser™ MD421
Large dynamic mic with detailed response and bold low-end. A studio standard on guitar cabs and toms.
05 / condenser
offU87
based on a Neumann™ U87
Studio standard large-diaphragm condenser. Off-axis position.





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