CMT 55 (O)
ReValver Microphones

CMT 55 (O)

Inspired by Schoeps® CMT 55 (Omnidirectional)

Template: Modern Royer style ribbon (active) in Omni/ambient mode

acronym:

  • O = Omni (omnidirectional) takes sound from all directions

WHAT MAKES IT SPECIAL

It keeps the heat ribbon adds much more three-dimensional real environment

SOUND CHARACTER

  • low full but natural
  • medium very open
  • high soft but present
  • answer very spatial and realistic

in practice: more natural than CMT55 (C) more open than C4038 less bright than a 414

TIMBRIC PERSONALITY

it's a mic:

  • very natural
  • very three-dimensional
  • very musical
  • not very aggressive

perfect for: clean ambient studio layer

cleanambientrecording

Controls

Axis Interaction

almost irrelevant

  • ON → slightly more focus
  • OFF → more widespread

Gain (dB)

  • volume only

Mic Distance (inch)

  • Distance 0–1”: not very useful
  • Distance 1–3”: Direct but open
  • Distance 3–6”: natural
  • Distance 6–10”: ambient

Low (dB)

full but controlled bass

use:

  • 0 → natural
  • 1 → tighter

High (dB)

use:

  • 0 → perfect
  • +1 → more air
  • rarely beyond

Delay (ms)

Useful for: Creating deep multi-mic combinations

Ambience (Y/N)

almost always ON

Amb Level (dB)

  • low → natural
  • medium → study
  • high → ambient

Amb Size (ms)

  • 40–80 → study
  • 80–120 → large

Pro Tips

QUICK SUMMARY

  • type: ribbon omni
  • character: natural / spatial
  • strength: realism
  • limit: little attack

ON DARK CAB (PPC, Orange)

EXCELLENT opens without harshness

ON MODERN CABs (VHIII, 6505)

it makes it more natural and less digital

ON VINTAGE CAB

perfect disco sound

ON HI-FI CAB (TVX, SW Giant)

risk: → too widespread → poorly defined

PRO

very natural, very musical, three-dimensional, excellent for study

AGAINST

little attack, not very defined, not ideal alone for metal

Setup Examples

REALISTIC CLEAN (TOP)

Dist4–6”
AxisOFF
Low0
High+1
AmbHon
  • real sound

AMBIENT / CINEMATIC

Dist5–8”
AxisOFF
High+2
AmbON (wide)

ROOM MIC (PRO)

pair it with50%
  • SM57 → attack
  • R121 / CMT55 (C) → body
  • this = space

STUDIO LAYER

Dist3–5”
AxisOFF
AmbHon