Shure KSM109/SL User manual

User Guide

27C3142 (Rev. 3) Printed in U.S.A.

SHURE INCORPORATED

KSM109 CARDIOID CONDENSER MICROPHONE

If you have any questions not answered in this booklet, please contact Shure

Applications Engineering at 847-600-8440, Monday through Friday, from

8:00am to 4:30 pm, CST. In Europe, call 49-7131-72140. Our web address is

www.shure.com.

Over 75 years of audio experience has contributed to making the KSM109

one of the finest microphones available.

Thank you for selecting the KSM109.

FIGURE 1. KSM109

GENERAL DESCRIPTION

The Shure®KSM109 is an end-address condenser microphone with a cardioid

polar pattern. Designed for studio use, yet rugged enough for live applications,

the KSM109 delivers a clear reproduction of the origninal sound source. Its

extended frequency response makes it ideal for recording musical instruments.

FEATURES

• Cardioid polar pattern to reduce the pickup of unwanted sounds

• Ultra-thin, 2.5 µ m 24 karat gold-layered, low mass Mylar®diaphragm for

superior transient response

• Class A, discrete, transformerless preamplifier for transparency, extremely

fast transient response, no crossover distortion, and minimal harmonic and

intermodulation distortion

• Premium electronic components, including gold-plated internal and externall

connectors

• Two-position switchable pad (0 dB and 15 dB) for handling extremely high

sound pressure levels (SPLs)

0/-15 dB

Attenuation Switch

PERFORMANCE CHARACTERISTICS

• Extended frequency response

• Low self-noise

• Can withstand high sound pressure levels (SPLs)

• High output level

• No crossover distortion

• Uniform polar response

•

Superior common mode rejection and suppression of RFI (radio frequency

interference)

APPLICATIONS

The KSM109 will produce superior results in any application requiring a high

quality microphone. Typical applications include:

• Close miking of acoustic instruments such as piano, guitar, violins, drums, and

percussion

• Overhead miking of drums and percussion instruments

• Electric guitar amplifiers

• Brass and woodwind instruments

• Orchestras, choirs, and wind ensembles

Note: Sound quality is strongly affected by microphone location and room acoustics.

To achieve the best overall sound for a particular application, it may be necessary to

experiment with microphone placement and room treatments.

USING THE KSM109

Mounting the Microphone

To secure the KSM109 to a floor stand or boom, thread the mount onto the

microphone stand and insert the microphone into the mount.

Power Requirements

The KSM109 requires phantom power and performs best with a 48 Vdc supply

(IEC-268-15/DIN 45 596). It can operate on voltages as low as 11 Vdc, but

headroom and sensitivity will be decreased slightly.

Note: Most modern mixers provide phantom power.

Cable Connections

Use a cable with XLR connectors at each end.

Load Impedance

Shure recommends a load impedance of at least 1000 Ω. When used with

modern microphone preamplifiers rated at about 2500 Ω, the KSM109

provides higher maximum SPL capability and output clipping level. When the

attenuation switch is set to the -15 dB position, the KSM109 can handle up to

165 dB SPL, and can output +15 dBV into a load of 5000 Ωor greater.

Setting Attenuation

The attenuation switch on the KSM109 lets you reduce the signal level by up

to 15 dB without altering frequency response. This can prevent extremely loud

sounds from overloading the microphone. Set the switch to the desired

attenuation levels as follows:

0 dB - Move the switch to this position for “quiet” to “normal” sound levels.

-15 dB - Move the switch to this position when the microphone is

approximately 0.75 meters (2 feet) from sound sources such as a snare drum,

or electric guitar cabinet.

SPECIFICATIONS

* 20 Hz to 20 kHz;THD < 1%. THD of the microphone preamplifier when applied input signal is

equivalent to the cartridge output at specified SPL.

**S/N ratio is the difference between 94 dB SPL and equivalent SPL of self-noise A-weighted.

Cartridge Type Permanently Biased Condenser

Frequency Response 20-20,000 Hz (see Figure 2)

Directional Polar Pattern Cardioid (see Figure 3)

Output Impedance 150 Ω(actual)

Attenuation Switch 0 dB or 15 dB attenuation

Phantom Power 48 Vdc ± 4 Vdc (IEC-268-15/DIN 45 596),

positive pins 2 and 3

Current Drain 5.2 mA typical at 48 Vdc

Common Mode Rejection ≥50 dB, 20 Hz to 20 kHz

Polarity Positivepressureondiaphragmproducespositive

voltage on output pin 2 relative to pin 3

Dimensions and Weight 24 mm (0.95 in.) diameter, 162 mm (6.37 in.) long;

195 grams (6.9 oz.) (see Figure 4)

Sensitivity (typical, at 1000 Hz;

1 Pa = 94 dB SPL) -41 dBV/Pa

Self-noise

(typical, equivalent SPL;

A-weighted IEC 651) 19 dB

Maximum SPL*

(Attenuator on)

5000 Ωload

2500 Ωload

1000 Ωload

150 (165) dB

144 (159) dB

139 (154) dB

Output Clipping Level*

5000 Ωload

2500 Ωload

1000 Ωload

15 dBV

9 dBV

3 dBV

Dynamic Range

(Attenuator on)

5000 Ωload

2500 Ωload

1000 Ωload

133 (136) dB

128 (130) dB

122 (125) dB

Signal to Noise Ratio** 75 dB

FIGURE 2. TYPICAL FREQUENCY RESPONSE

FIGURE 3. TYPICAL POLAR PATTERNS

FIGURE 4. DIMENSIONS

(0.950 IN)

162 mm

(6.375 IN)

24 mm

CERTIFICATION

Eligible to bear CE Marking; Conforms to European EMC directive 89/336/EEC.

Meets applicable tests and performance criteria found in European Professional

Audio Products EMC Standard EN 55103 (1996); Part 1 (Emissions) and Part 2

(Immunity). The KSM109 is intended for use in environments E1 (residential) and

E2 (Light Industrial) as defined in European standard EN 55103. EMC

conformance is based on the use of shielded interconnecting cable.

FURNISHED ACCESSORIES

Vinyl Pouch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A109ZB

Windscreen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A3WS

Microphone Clip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A25D

OPTIONAL ACCESSORIES

SHOCKSTOPPER™ Shock Mount. . . . . . . . . . . . . . . . . . . . . .A55M, A55HM

Popper-Stopper™ Windscreen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PS-6

SERVICE

For additional microphone service or parts information, please contact the Shure

Service Department at 1-800-516-2525. Outside the United States, please

contact your Authorized Shure Service Center.

SHURE Incorporated http://www.shure.com

United States, Canada, Latin America, Caribbean:

5800 W. Touhy Avenue, Niles, IL 60714-4608, U.S.A.

Phone: 847-600-2000 U.S. Fax: 847-600-1212 Intl Fax: 847-600-6446

Europe, Middle East, Africa:

Shure Europe GmbH, Phone: 49-7131-72140 Fax: 49-7131-721414

Asia, Pacific:

Shure Asia Limited, Phone: 852-2893-4290 Fax: 852-2893-4055

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