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Lawson L47 Capsule

The integrity of the capsule, more than any other element, determines the microphone's character as a transducer.


Lawson's L47 one-inch capsule design is based on the M7 capsule used in the U47/M49 microphones.

Lawson's L47 capsule features:

  • Solid brass construction machined in Lawson's Nashville machine shop

  • Hand-lapped to a mirror finish in the Lawson lab

  • Critically tensioned in the Lawson lab with dual 3-micron gold-sputtered diaphragms to improve and extend high frequency response

  • Supported by Lawson's proprietary shock mounting system that (1) eliminates the need for external spider-type mounting systems and (2) filters out vibrations that may travel through the mic cable and or mic stand into the microphone

  • Quick Change™-- May be used on Lawson TUBE or FET electronics

L47MPII Capsule

Lawson Quick Change™ System

Lawson capsules are universal or interchangeable. We call it the Quick Change™ system.


The L47MPII capsule will fit either the Lawson Vacuum Tube Electronics or the Lawson FET electronics. Here’s an example of how cool this feature is. If you have an L251 Tube Mic and an  L47FET mic (check out the Lawson Tube/FET Combo), you can swap heads and voila! Now you have the L47MPII Vacuum Tube Mic and the L251 FET mic.


Here’s another scenario: purchase the L251 Quick Change Capsule, the L47MPII Quick Change Capsule, and one Lawson FET electronics. You can use either capsule on the FET electronics.

L47MPII Quick Change

Lawson Tube Electronics

To impart a warm, classic sound, the Lawson L47MPII microphone utilizes the 6n1P vacuum tube. Each tube is stringently tested and individually selected to meet low-noise guidelines.


To further insure highest performance and stability, an innovative, low loss tube socket is utilized employing NASA approved, heavily gold-plated beryllium copper contacts, resulting in unparalleled grip, low contact resistance, low noise and long life.


The vacuum tube is coupled through an esoteric capacitor and a Lundahl transformer.

L47MPII Tube Electronics

Lawson Tube Mic Power Supply

Infinitely Variable Multi-Pattern Control

The surprisingly wide variations exhibited by the L47MPII omni, cardioid, and figure 8 frequency responses are uniquely characteristic of the M7 capsule. The most prominent variation of 8 dB occurs in the 4 to 5 kHz range between omni and figure 8. With the L47MPII Pattern Control, you can adjust anywhere between the major patterns or other intermediate patterns, fine-tuning the L47MPII for a specific vocalist or instrument. It’s just like using equalization. The pattern control smoothly adjusts (similar to a volume control) without the limitations of preset switch positions.

L47MPII Power Supply

To illustrate the usefulness of the infinitely variable multi-pattern feature, this graph shows a response overlay of two intermediate patterns—wide cardioid (11 o’clock on the dial) and hyper cardioid (1 o’clock on the dial). A comparison of these two responses shows a variation of approximately 4 dB occurring in the 4 to 5 kHz regions, an area where the human ear just happens to be most sensitive.

L47MPII Overlay
L47MPII MP_C Switch

0/-10 dB Pad

With the two position pad switch, zero or -10 dB of attenuation can be accessed. The 10 dB pad lowers the sensitivity of the vacuum tube allowing for increased SPL's when engaged. The 10 dB pad should only be used for extreme SPL's.

-Bass L251 (6 dB per octave rolloff at 100 Hz)/+Bass L47 (Flat)

The Lawson Tube Mic Power Supply is universal: It may be used with either the L47MPII or the L251. The normal switch position for the L47MPII is the +Bass L47. The -Bass L251 position may be used with the L47MPII if you feel there is excessive proximity effect.

Multi-Pattern/Cardioid Only Switch (shown left)

The L47MPII also features a cardioid only switch on the base of the microphone which disengages the multi-pattern function increasing gain by 3 dB and thereby lowering self-noise.

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