Neumann Cardioid Microphones: Choosing a Model

A cardioid microphone picks up mainly from the front and less from the rear, so it suits vocals, voice-over, podcasts, streaming and video calls in ordinary rooms. Neumann uses cardioid pickup across several kinds of microphones. The right model depends on what you record, how you connect it and whether you need pickup patterns other than cardioid.

Before you start

A Neumann studio microphone is local hardware and does not need an account or online service. Most studio models are condensers with an XLR connector and need 48 V phantom power. That means you need an audio interface or mixer with an XLR input and phantom power, plus a balanced XLR cable. Requirements differ between condenser and dynamic models and between product generations, so check the spec sheet for the exact model.

• What you will record: spoken voice, singing, acoustic instruments or several people at once.
• Where you will record, and how much background noise and room echo it has.
• Your interface: number of XLR inputs, phantom power and available gain.
• Accessories: check the package contents for a stand mount, shock mount or pop filter, because some are included and others are sold separately.

Some browser-based or third-party test tools process audio in the browser, and others upload it. Before you record anything private with such a tool, read how it handles your audio.

Step-by-step instructions

1. Decide between cardioid-only and multi-pattern

Cardioid-only large-diaphragm models, such as the TLM 102 and TLM 103, suit one person working in front of the microphone. Multi-pattern models, such as the U 87 Ai and TLM 107, have a cardioid setting plus other patterns. Those extra patterns help with room sound or two people facing each other across one microphone. If you will only ever use cardioid, a multi-pattern model adds cost for switching you will not use.

2. Choose the body type

• Large-diaphragm, side-address studio microphones: vocals, voice-over and spoken-word content.
• Small-diaphragm pencil microphones such as the KM 184: acoustic instruments, ensembles and overhead positions.
• Handheld KMS models: live vocals and hand-held use. Not all of them are cardioid; the KMS 105, for example, is supercardioid, so check the pattern before buying.

3. Account for your room

Condenser microphones are sensitive. Cardioid pickup reduces sound arriving from behind, but it does not remove reflections from walls in front of you. Point the back of the microphone toward noise sources such as computers or windows, and work close enough that your voice is much louder than the room.

4. Connect and select the input device

With phantom power switched off, connect the XLR cable, then turn on 48 V on that input. Switching phantom power while the cable is live can cause loud pops. In your operating system's sound settings and in your recording or call app, choose the audio interface as the input device. Choose the interface's headphone output as the output device if you want to monitor through it. Write down the previous selections so you can switch back.

5. Match the sample rate

Set the interface, the operating system and your recording software to the same sample rate. 48 kHz is common for video work and 44.1 kHz for music releases. Mismatched rates can cause clicks, dropouts or pitch problems in some setups.

6. Set the input level

Speak or play at the loudest level you expect to use. Adjust the interface gain until peaks sit clearly below the clipping indicator, leaving headroom for louder moments. If you control gain at the interface, turn off automatic gain adjustment in your call or streaming app where the app offers that option.

Check the output

• Record a short test at your normal working distance and play it back on headphones through your chosen output device.
• Confirm the cardioid pattern by speaking from the front, the side and behind the microphone: the rear take should be noticeably quieter.
• Listen to a silent section for hiss, hum or room noise, and check for clipping, popping on P and B sounds, and harsh S sounds.
• Confirm that the recorded file's sample rate and bit depth match your project settings.

Video call and streaming apps apply their own processing and compression. What other people hear reflects the app as well as the microphone, so judge the microphone's sound from a local recording.

Common problems and next steps

• No signal: check that phantom power is on, that the correct input device is selected in both the system and the app, and that the cable works.
• Muffled or thin sound: make sure you are speaking into the correct side, because side-address and end-address models are used differently.
• Boomy low end: cardioid microphones add bass close up (the proximity effect), so move back slightly or use a low-cut filter if the microphone or interface has one.
• Too much background noise: lower the gain, move closer to the microphone and point its rear at the noise source.
• Distortion on loud sources: reduce the gain, or use the pad switch on models that have one.
• Echo in calls: use headphones so the microphone does not pick up the speakers.

Before buying, confirm that each shortlisted model is still current, since Neumann revises and retires models over time. Compare them with dealer demonstrations or manufacturer audio samples recorded with similar sources.