Sennheiser
SL Headmic 1
Electret / lavalier · Omnidirectional · 20–20,000 Hz
- 143 dB SPL from an omnidirectional headworn capsule — built for musical theatre, where the performer is also the loud source.
- Omni keeps the tone steady as the head turns; the trade is gain before feedback, which is why it lives on in-ear stages.
Frequency response
No response curve yet.
MicSense only draws a curve traced from a graph the manufacturer actually publishes — it never estimates one from the microphone’s class. Sennheiser publishes figures for the SL Headmic 1 but no response graph, so the numbers are in the spec table below and the chart stays empty.
Polar pattern
Generated from the first-order directivity formula for omnidirectional. It illustrates the pattern type — it is not a measurement of this individual model.
Specifications
| Manufacturer | Sennheiser |
|---|---|
| Model | SL Headmic 1 |
| Type | Electret / lavalier |
| Form factor | Headset |
| Polar pattern | Omnidirectional |
| Frequency range | 20–20,000 Hz |
| Sensitivity | — |
| Max SPL | 143 dB SPL |
| Self-noise | 27 dB(A) |
| Impedance | 1000 Ω (nominal) |
| Connector | wireless bodypack |
| Powering | phantom 48 V |
| Weight | — |
| Price tier | Premium |
| Introduced | — |
Every figure above is from Sennheiser’s own published datasheet for this model — see the datasheet. A dash means the manufacturer does not publish that figure; it does not mean zero.
What it gets used for
- Theatre lav
- FOH vocal
MicSense tags microphones by the job on a live stage, not by studio category — so you can filter for “kick in” or “monitor vocal” instead of working backwards from “large-diaphragm condenser”.
Compare it against the alternatives.
MicSense lets you put up to four microphones side by side — spec table, overlaid response curves and polar diagrams on one screen. Free with a free Squaresmile account.