Setting up a kick drum mic correctly determines whether the recorded or amplified signal captures the sound you are after. The placement decisions are quick to make once you understand what each position emphasises, and the setup process takes a few minutes rather than the extended experimentation some engineers describe.
Step 1: Prepare the Bass Drum
If you are recording or live-miking with a microphone inside the drum, the resonant head needs a port — a circular hole of 4 to 6 inches. Many bass drums come with a pre-cut port; if yours does not, a professional drum shop can cut one cleanly for a few pounds. The port allows the microphone to be placed inside the shell without disassembly and allows some air movement during playing, which reduces internal air pressure build-up. Tune the drum before positioning the microphone — heads need to be at their final tension before any placement decisions are made. For purchasing guidance on which kick drum mic to use, see the buyer's guide. The overview article explains how different placement positions affect the sound.
Step 2: Position the Microphone
For inside placement: point the microphone at the beater impact point on the batter head, with the capsule 5–15cm from the head. Closer placement emphasises attack and reduces the shell's resonant contribution; further back produces more body and less direct click. Angle the microphone slightly off-axis from the direct impact point to reduce excessive high-frequency harshness. For outside placement: position the microphone 5–20cm from the resonant head, centred on the port or on the head's centre. This position captures more shell tone and warmth.
Step 3: Set Gain and Check the Signal
Connect the microphone via XLR to the preamp or interface input. Set the gain so that the loudest kick hits peak at no higher than -6dBFS on the input meter — the transient peak of a kick hit is significantly higher than the sustained average level, and clipping ruins the recording. Play the kick drum at performance intensity (not a test tap) before finalising the gain setting. Check the signal in headphones for any distortion, mechanical noise pickup or phase issues if using a two-microphone approach. Adjust the inside microphone's position slightly if the attack sounds too harsh or too dull.
Frequently Asked Questions
How do I position a kick drum mic inside the drum?
Point the microphone capsule at the beater impact point on the batter head with the capsule 5 to 15cm away. Closer placement (5–8cm) emphasises the attack and click of the beater; pulling back to 12–15cm captures more of the shell's resonant body. Angle the capsule slightly off-axis from the direct impact point to reduce harshness in the high-frequency content of the beater impact.
Do I need to cut a hole in the resonant head?
Only if you want to place the microphone inside the drum. Many bass drums come with a pre-cut port; if yours does not, a drum shop can cut one for a small fee. Without a port, the microphone must be placed outside the drum, which is a perfectly valid approach — it captures more of the shell's fundamental tone and low-end character. Both approaches are used in professional recording contexts.
How do I deal with phase issues when using two microphones?
Phase issues occur when the same sound arrives at two microphones at slightly different times, causing frequency cancellation when the signals are combined. With one mic inside and one outside the kick drum, flip the phase (polarity) on one of the two channels and listen for which setting produces more low-frequency content — the correct phase relationship increases bass and body. Most DAWs and mixing desks include a phase invert button for exactly this purpose.
What is the correct gain setting?
Set the preamp gain so that the loudest kick strikes — at full performance intensity, not a test tap — peak at no higher than -6dBFS on the input meter. The transient peak of a kick hit can be significantly higher than the average level, and clipping the input produces permanent, unfixable distortion. Leave headroom for the biggest hits; a recording at -10dBFS is infinitely preferable to a clipped one.
Should I use compression while recording the kick drum?
For most recording contexts, recording a clean, uncompressed signal and applying compression in mixing is the safer approach. Compression on the way in is permanent and cannot be undone if it proves to be the wrong setting. Experienced engineers with a clear picture of the desired sound may compress lightly while recording; for home recording contexts, capturing the raw signal and deciding on compression settings in post is the more flexible approach.
How close can I place the microphone to the batter head?
Very close — 2 to 5cm — if the microphone's SPL handling allows it. The AKG D112, Shure Beta 52A and Audix D6 are all designed for close placement and will handle the sound pressure levels produced at this distance. The closer the placement, the more attack and click are captured and the less room and shell resonance is included. Experiment from a starting position of about 8–10cm and adjust from there.
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