Shure BETA 98A User Manual download pdf (Page 3)

General Description

The Shure Beta 98A is a compact, high-output, con-

denser microphone for professional sound reinforcement

and studio recording. An extremely uniform cardioid po-

lar pattern provides excellent gain before feedback and

off-axis rejection of unwanted noise. Its high sound pres-

sure level (SPL) capability makes it useful for a variety of

acoustic or amplified instruments including drums, piano,

reed, wind, and strings.

Variations

• Beta 98A/C includes microphone, 7.6 m (25 ft) light-

weight interconnect cable, preamplifier, and RK282

shockmount swivel adapter.

• Beta 98AD/C includes microphone, 4.6 m (15 ft)

heavy-duty interconnect cable, preamplifier, and A98D

microphone drum mount.

Performance Characteristics

• Exceptional low-frequency reproduction

• Extremely high SPL handling

• High output level

• No crossover distortion

Features

• Premier live performance microphone with Shure

quality, ruggedness, and reliability

• Uniform cardioid pick-up pattern for maximum gain

before feedback and superior rejection of off-axis

sound

• Tailored frequency response specifically shaped for

drums, percussion, reeds, and horns

• Compact design reduces stage clutter

• Wide dynamic range for use in high SPL environments

• Optional A98D mount is unobtrusive, versatile, and

easy to adjust

• Enamel-coated metal construction and stainless steel

inner grille resist wear and abuse

Applications and Placement

General Rules for Use

• Aim the microphone toward the desired sound source; angle unwanted sounds toward its

null

point.

• Use the fewest amount of microphones as practical to increase the

Potential Acoustic Gain

and prevent feedback.

• Follow the

3 to 1 Rule

by spacing each microphone by at least three times the distance to its source to reduce

Phase Cancellation

• Place microphones as far as possible from reflective surfaces to reduce

Comb Filtering

• When using directional microphones, work closely to the microphone for extra bass response to take advantage of

Proximity Effect

• Avoid excessive handling to minimize pickup of mechanical noise and vibration.

• Do not cover any part of the microphone grille, as this will adversely affect microphone performance.

• Add a windscreen when using the microphone outdoors.

The following table lists the most common applications and placement techniques. Keep in mind that microphone tech-

nique is largely a matter of personal taste; there is no one “correct” microphone position.

Shockmount Swivel Adapter

Use the following procedures to mount the Beta 98A on

the swivel adapter:

1. Connect the microphone to the adapter.

2. Thread the cable through the C-clamp and slide the

connector into the C-clamp until snug.

3. To reduce wear on the cable, snap it into the stress

reliever clip leaving 5 to 7 cm (2 to 3 inches) of slack

on the connector side.

A98D Drum Mount

The Shure A98D mounts the Beta 98A on a drum or

cymbal stand. Reference the furnished A98D guide to

correctly mount the microphone.

Interconnecting Cable

The supplied cable connects the BETA 98A to the pre-

amplifier. If necessary, up to 23 m (75 ft) of cable can be

used between the microphone and preamplifier without

signal loss.

APPLICATION SUGGESTED MICROPHONE PLACEMENT TONE QUALITY

Tom-Toms One mic on each tom or between a pair of toms, 2.5 to

7.5 cm (1 to 3 in.) above drum heads.

Medium attack; full, balanced

sound.

Remove bottom head and place a mic inside pointing up

toward top drum head.

Maximum isolation; full, bal-

anced sound.

Snare Drum 2.5 to 7.5 cm (1 to 3 in.) above rim of top head of drum.

Aim mic at drum head.

Most “snap” from drumstick.

Cymbals Close-mike with an A98D mount for maximum isolation,

but place out of cymbal movement range.

Bright, with plenty of attack.

Brass & Woodwinds Brass: 30 to 90 cm (1 to 3 ft.) away, on-axis with bell of

instrument.

Bright, clear sound.

Woodwinds: 2.5 to 15 cm (1 to 6 in.) away, on-axis with

bell of instrument.

Bright, clear sound.

Bell of instrument 90° off-axis from front of mic. Softer, mellow sound.

NOTE: Before each use, make sure the cartridge is tightly secured on the microphone, as vibration and accidental hits

with drumsticks may loosen it, resulting in signal loss.

BETA 98A MOUNTED WITH

SWIVEL ADAPTER

BETA 98A MOUNTED WITH A98D

1 2 3 4 5 6 7 8 ... 23 24

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Shure BETA 98A User Manual Page 3

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