Shure KSM44A/SL Quick Start Guide

Product Specifications

KSM44A Multi-Pattern Large Dual-Diaphragm Side-Address Condenser Microphone

Overview

The KSM44A is a premium, large-diaphragm, side-address condenser microphone with multiple polar pattern options (cardioid, omnidirectional,
bidirectional). The refined and sophisticated design of the KSM44A features an externally biased, dual 1-inch diaphragms, extensive internal pop
filtering and Prethos™ Advanced Preamplifier Technology for a ground-breaking threshold minimum of self-noise. The KSM44A is the premier choice
for the highest level of professional studio and stage performance.

Features

• A milestone technical achievement, Shure’s Prethos™ Advanced Preamplifier Technology provides 4dB of self-noise and max SPL of 131 dB for a
total dynamic range of 127 dB – an increase of 7 dB that defines the new standard for cleanly nuanced audio capture

• Multiple polar patterns–cardioid, omnidirectional and bidirectional–for maximum flexibility in a wide variety of recording applications

• Dual 1 inch, externally biased, ultra-thin, 2.5 μm, 24 Karat gold-layered, low mass diaphragms provide superior transient response

• Class A, discrete, transformerless preamplifier for transparency, extremely wide frequency response and no crossover distortion. Minimizes har-

monic and intermodulation distortions.

• Premium electronic components and gold-plated internal and external connectors

• Subsonic filter eliminates rumble from mechanical vibration below 17 Hz.

• Switchable 15 dB pad for handling extremely high sound pressure levels (SPLs)

• 3-position switchable low-frequency filter helps reduce unwanted stand vibration noise or counteract proximity effect

• Integrated three-stage “pop” protection grille reduces plosives and other breath noise

Available Models

®

KSM44A/SL

Includes ShureLock

Specifications

Cartridge Type Condenser (externally biased)
Polar Pattern Cardioid, Omnidirectional, Bidirectional
Frequency Response 20 to 20,000 Hz
Output Impedance 50 ohms
Attenuator Switch 15 dB

Low-Frequency Filter Switch Flat, –6 dB/octave below 115 Hz, or –18 dB/octave below 80 H
Power Requirements 11–52 V DC phantom power (IEC-61938) 5.8 mA, maximum
Common Mode Rejection (10 to 100,000 Hz) > 50 dB
Common Mode Rejection

(20 Hz to 20 kHz)
Polarity Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
Net Weight 492 g (17.4 oz.)
Connector Three-pin professional audio (XLR). male, balanced

> 50 dB

Suspension Shock Mount, ShureLock® Stand Mount, Carrying Case, and Velveteen Pouch

KSM44A

Sensitivity (open circuitvoltage,

@ 1 kHz, typical)

Self Noise (equivalent SPL,A-

weighted, typical)

Preamplifier Distortion (at1 kHz,

94 dB SPL)

Signal-to-Noise Ratio 90 db 88 dB 86.5 d B

ClippingLev

el (20 Hz

to 20 kHz,

1% THD)

ge (@

1kHz)

Maximum SPL (1 kHz at1%

THD)*

2500 Ω load 9 dBV

1000 Ω load 6 dBV

2500 Ω load 130 dB 134 dB 131 dB DynamicRan

1000 Ω load 127 dB 131 dB 128 dB

2500 Ω load

1000 Ω load

Cardio id Omnidi rectional Bidi rectional

–31 dBV/Pa† (29.8

mV)

4 dB SPL-A 6 dB SPL-A 7.5 dB SPL-A

<0.001%

–37 dBV/Pa† (14.8 mV) –36 dBV/Pa† (16.8

mV)

PAD

OFF

134

dB SPL

131

dB SPL

PAD ON PAD OFF PAD ON PAD OFF PAD ON

150 dB

SPL

147 dB

SPL

140 dB

SPL

137 dB

SPL

152 dB SPL

149 dB SPL

139 dB

SPL

136 dB

SPL

151 dB

SPL

148 dB

SPL

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©2010 Shure Incorporated

Furnished Accessories

®

Stand Mount

A44AM

RK383

ShureLock

Suspension Shock Mount Elastic Cord, Cristal (contains two)

A44ASC

A44AVB

Aluminium Carrying Case

Protective Velveteen Pouch

A44ASM

ShureLock® Elastic Shock Mount

Omnidirectional

150 °

120 °

90°

60°

30°

100 0 Hz 100 00 Hz

Cardioid

150 °

120 °

90°

60°

30°

250 H z
500 H z

180 °

–20 dB
–15 dB

–10 dB

–5 dB

+5 dB

180 °

–20 dB
–15 dB

–10 dB

–5 dB

+5 dB

150 °

30°

150 °

30°

Polar Patterns

120 °

90°

60°

120 °

90°

60°

90°

90°

120 °

60°

120 °

60°

150 °

30°

150 °

30°

250 0 Hz
640 0 Hz

–20 dB
–15 dB

–10 dB

+5 dB

180 °

–20 dB
–15 dB

–10 dB

–5 dB

+5 dB

180 °

–5 dB

150 °

30°

150 °

30°

120 °

60°

120 °

60°

90°

90°

Frequency Responses

20

15

10

5

0

-5

dB

-10

-15

-20

-25

-30
20 100 1k 10k 20k

20

15

10

5

0

-5

dB

-10

-15

-20

-25

-30
20 100 1k 10k 20k

Hz

Hz

250 H z
500 H z

100 0 Hz 100 00 Hz

Bidirectional

150 °

120 °

90°

60°

30°

250 H z
500 H z

100 0 Hz 100 00 Hz

www.shure.com

180 °

–20 dB
–15 dB

–10 dB

–5 dB

+5 dB

150 °

30°

120 °

60°

90°

90°

120 °

60°

250 0 Hz
640 0 Hz

150 °

30°

250 0 Hz
640 0 Hz

180 °

–20 dB
–15 dB

–10 dB

–5 dB

+5 dB

150 °

30°

120 °

60°

90°

20

15

10

5

0

-5

dB

-10

-15

-20

-25

-30
20 100 1k 10k 20k

Hz