Audix OM7 Low-Output Hypercardioid Dynamic Vocal Microphone
The OM7 is a hypercardioid dynamic vocal mic designed for very large stages: its output, 8 to 10 dB lower than a typical dynamic, pushes feedback back even when the singer wraps both hands around the grille.
What sets it apart
- Deliberately low output, 0.8 mV/Pa
- Very high gain before feedback
- Very tight hypercardioid pickup
- 50 ohm impedance, VLM Type C capsule
Why such low output
Audix gave the OM7 a sensitivity of 0.8 mV/Pa: the capsule behaves as if it had its own pad, and the signal stays clean even under a very powerful voice. You make up the level at the desk. That is what lets you push the wedges harder before feedback, even with a singer who cups the mic.
What it asks of you
The trade-off is well known to engineers: you need a console or preamp with plenty of gain in reserve. Audix aims it at sound companies, front-of-house engineers and large installations. To get the benefit, sing right on the grille, within 1 inch, and keep the mic parallel to the floor facing the wedges.
Specifications
| Sensitivity | 0.8 mV/Pa at 1 kHz |
|---|---|
| Impedance | 50 ohms |
| Polar pattern | Hypercardioid |
| Off-axis rejection | More than 30 dB |
| Capsule | Dynamic, VLM Type C |
| Frequency response | 48 Hz to 19 kHz |
| Max SPL | 144 dB |
| Included | MC1 clip and pouch |
What it's for
- Large stages and touring
- Singers with very powerful voices
- Singers who cup the mic
- Fixed installs in performance venues
Compared with other manufacturers
Other dynamic vocal mics chosen for gain before feedback:
| Manufacturer | Model | Key trait |
|---|---|---|
| Audix | OM7 | Low output, 0.8 mV/Pa, hypercardioid |
| Electro-Voice | ND96 | Supercardioid for very loud stages |
| Audio-Technica | AE6100 | Hypercardioid dynamic vocal mic |
| Shure | Beta 58A | Supercardioid dynamic vocal mic |
Frequently asked questions
- Why does the OM7 need so much gain?
- Because its output sits 8 to 10 dB below a typical dynamic mic; Audix does it on purpose to keep the signal clean at the source.
- What gear do I need to run it?
- A good console or preamp with enough gain in reserve to make up for the low output.
- Does the OM7 hold up against feedback when the grille is cupped?
- Yes: Audix describes it as highly resistant to feedback, even with a singer wrapping both hands around the grille.
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