Cardioid vs Supercardioid Microphones: Stage and Monitor Placement

TL;DR — A cardioid microphone is least sensitive directly behind its pickup axis. A supercardioid has a narrower front pickup region and a small rear lobe, so a monitor directly behind it can be a poor choice. Match loudspeaker placement to the actual microphone's polar plot, allow for performer movement, and test the arrangement at show level. Neither pattern guarantees freedom from feedback.

What the two patterns describe

A polar pattern describes microphone sensitivity to sound arriving from different directions. It is normally plotted at selected frequencies, so one outline does not describe every frequency equally.

A cardioid favors sound from the front and has its strongest rejection toward the rear. A supercardioid narrows the forward pickup region, with rejection directions angled toward the rear and some sensitivity directly behind it. That rear sensitivity is the rear lobe.

Shure's overview of microphone polar patterns explains the difference between front pickup, side rejection, and rear sensitivity. These patterns are not hard-edged beams: a source outside the preferred region may still be audible, and its tone can change.

Compare the practical tradeoffs

Use this as a starting comparison, then consult the selected model's frequency-dependent polar plots. The venue, microphone response, monitor coverage, and performer technique determine the useful result.

Understand the microphone's axis first

“Front” means the direction of the microphone's intended pickup axis. For a typical end-address handheld vocal mic, the singer addresses the grille end. A side-address model is different: its active face, rather than the end of the body, points toward the source.

Angles are measured relative to that axis, not relative to the venue floor plan. Tilting or rotating a microphone changes where its rejection directions point. A stage plot therefore needs the vocal position and wedge location, while the crew must confirm the actual microphone angle on site.

Do not translate “behind the microphone” into “behind the performer.” They are different reference points and can lead to very different speaker positions.

Place wedges around the actual polar pattern

Cardioid starting position

Start with the wedge toward the microphone's rear rejection direction, while aiming the loudspeaker toward the performer's ears. Check both horizontal position and vertical angle. A wedge on the floor and a tilted microphone rarely sit in a perfectly flat diagram.

Keep the microphone in its intended performance position while making adjustments. An empty stand does not show how a singer holds the mic during a chorus.

Supercardioid starting position

Avoid treating the point directly behind the microphone as a null. Place wedges toward the model's angled rejection directions and test them individually. Shure's BETA 27 instructions, for example, describe rejection around 120 degrees from the front axis and recommend testing placement before performance. Use the actual model's documentation rather than copying that angle to every microphone.

Two wedges are not a requirement for supercardioid microphones. One appropriately positioned wedge may be enough. If two are used, both must be evaluated with the microphone, and their combined sound can behave differently from either speaker alone.

Allow for movement and other sound sources

A tighter pattern can help isolate a source, but it asks more of the performer. Turning away, holding the microphone at an angle, or changing distance can alter level and tone. Cupping the grille can also disrupt directional behavior.

The monitor is not the only source to consider. Check nearby drum cymbals, guitar cabinets, sidefills, and PA coverage. A rear lobe facing an unwanted source can offset the benefit of stronger rejection elsewhere.

For a roaming vocalist, discuss the full performance area. A layout that works at the center stand may not work when the singer moves beside a sidefill. An IEM versus wedge decision should account for this movement rather than relying on microphone pattern alone.

Use a repeatable substitution check

When replacing a cardioid microphone with a supercardioid, or the reverse:

1. Confirm the exact model, pickup axis, pattern, and any selectable setting.
2. Adjust preamp gain for the new microphone and establish a comparable vocal level.
3. Check the microphone and wedge positions together, including vertical angles.
4. Listen with the actual singer moving through normal positions.
5. Add the rest of the stage sound and recheck stability at the intended level.
6. Update the rider if the replacement changes the agreed layout or equipment requirements.

Do not compensate for an unsuitable layout only by cutting more EQ. Use the broader microphone feedback troubleshooting guide when repositioning and gain checks do not resolve the problem.

Document the choice without overloading the rider

On the input list, name the agreed microphone or capsule and note the pattern when substitutions could affect monitor placement. On the stage plot, show the performer and monitor positions. Keep essential notes short and actionable.

An example advance note is: “Lead vocal: agreed supercardioid handheld. Confirm wedge position against its polar plot during soundcheck; notify the engineer before substituting a different pattern.” This gives the venue a concrete decision to resolve without pretending that a drawing can guarantee feedback performance.

FAQ

What is the difference between cardioid and supercardioid?

Cardioid has broader front pickup and strongest rear rejection. Supercardioid has a narrower front region, angled rear rejection directions, and a small rear pickup lobe.

Where should a monitor be placed with a supercardioid microphone?

Start toward the rejection directions shown in that model's polar plot, rather than directly behind its axis. Confirm the microphone angle, speaker aim, and performer position during soundcheck.

Is supercardioid always better for feedback?

No. It can help in a suitable layout, but its rear lobe and tighter aiming requirements can make another arrangement worse. Compare the complete system under realistic conditions.

Is supercardioid the same as hypercardioid?

No. They have different front coverage, rear lobes, and rejection directions. Do not reuse a monitor-placement assumption without checking the replacement microphone's polar plot.

Does condenser mean cardioid?

No. Condenser describes the transducer design; cardioid describes directionality. Both condenser and dynamic microphones can use different polar patterns.

Make monitor placement part of the advance

Build a stage plot and monitor plan in Techrider.live, add the agreed microphone details to the input list, and share the current rider with the engineer. Record the intended layout, then validate it with the actual equipment and performer.