ReValver Cabinets
Michael ACM800 212 Combo (L)
Inspired by Marshall® JCM800 2x12 (Combo, Left Speaker)
2x12" Speaker
2x12 Marshall JCM800 style combo (open/semi-open) “(L)” = Left mic perspective version / specific cone position
SOUND CHARACTER
aggressive midrange (Marshall)
shallower than the 4x12
highs present but not hi-fi
answer raw, rock, dynamic
in practice: more open than the 4x12 less modern more "amp in the room"
Controls
Gain (dB)
Mic volume
- ↑ more output
- ↓ more headroom
Mic Dist (inch)
VERY IMPORTANT
- 0–1” → aggressive, rock
- 1–3” → balance
- >3” → more open
- this cab -> sounds very good between 2–4” more natural than 4x12
Mic Axis (On/Off)
- Hon → attack + high
- OFF → warmer
- here -> OFF often better ON for aggressive rock
Low (dB)
- negative → tighter
- positive → more body
- this cab -> doesn't have huge bass → you can boost slightly
High (dB)
- negative → less harsh
- positive → more presence
- here -> often -1 / -2 dB is needed
Delay (ms)
Signal delay.
- 0 ms → direct
- 1–5 ms → depth
- 5 ms → ambient effect
- useful for -> simulating double mic
Ambience (Y/N)
- OFF → close mic
- ON → simulated environment
Amb Level (dB)
- low → natural
- high → ambient
Amb Size (ms)
- 20–40 → small room
- 40–80 → study
- 80–120 → large
here: it helps to make the cab realistic
Suggested Microphones
This cab is:
- mid-forward
- open
- very dynamic
- SM57 → the classic JCM800
- MD421 (LC1) → more body
- SM7 → smoother leads
- Rezio → modernize the cab
BEST MATCH:
here: they reduce harsh Marshall making the sound more “studio”
often best choice for recording
here they add detail and can emphasize the highs
Usage: off-axis longer distance
Setup Examples
CLASSIC ROCK (TOP)
MicSM57
Dist1–2”
AxisOFF
Low+1
High-1
Amblight
Pure JCM800
ROCK STUDIO
MicR121
Dist2–4”
AxisOFF
Low+1
High-1
AmbHon
more natural
LEAD ROCK
MicSM7
Dist2–3”
AxisOFF
High+1
AmbHon
MODERN ROCK
MicRezio
Dist1–2”
AxisON
Low0
High0