Boundary half-cardioid condenser – sits inside the kick drum on the resonant head for sub-thump capture.
Condenser instrument
Type · class
half-cardioid
Pattern · polar
kick drum (boundary)
Use · recommended
e
Family · Sennheiser
Features
Boundary half-cardioid condenser
Sits inside the kick drum on the resonant head
Captures sub-thump without a stand in the shell
Low-profile boundary format – nothing to knock over
Requires phantom power
Specifications
| Model | e 901 |
| Type | Condenser instrument |
| Polar pattern | half-cardioid |
| Typical use | kick drum (boundary) |
| Power | Phantom power required |









