Shure VA 300 User Manual download pdf (Page 18)

SHURE

Iplug-iri'

problem

solvers

A15 SERIES "PLUG-IN" MICROPHONE

ATTENUATORS, EQUALIZERS AND ADAPTERS

long x

dia.

Solve sound problems without time-consuming rewiring! Shure

"In-Line"

microphone attenuators, equalizers and adapters are perfect for

quick

corrections and modifications in

sponse and performance

micro-

phones and sound systems.

ey plug in and unplug in seconds to give

you instant modifications!

e cost of Shure Plug-In Problem Sol

rs is

so low that you can afford to keep th

handy for all installations and

applications.

SPECIFICATIONS

Connectors:

Designed to mate with Cann

series, Switch craft

series or equivalent.

Input:

Female'

Output:

Male'

Connections:

Balanced, input and output, Pin 2 and 3

"hot,"

Pin 1

shield and case.

Impedance:

Units are intended to

driven from 150 ohm, low level

Source:

source except for: A15LA - up to 10,000 ohms and

+24

dBm; A 15PR - any impedance, any leve

Termination:

When terminated with impedances other than 150 (25 to

1,000 ohms), the e

ect on

sponse characte

stics is

small.

Case

Material:

Steel with professional gray finish

Dimensions:

114 mm (4V2") long,

19.1

(%")

diameter

SPECIAL

NOTE:

The

use of

in-line

device

not

recommended

with

phantom

(simplex)

powered

condenser

microphone

systems.

• A15A, A15PR and A15PA are

symmetrical

and can be used in

either

direct

ion.

A15A MICROPHONE ATTENUATOR (Yellow Nameplate) Prevents

input

overload. Ideal

applications where very strong signals are applied to

a microphone input, as

feeding high level vocal or instrumental signals

into microphone mixers, consoles or recorde

rs.

The Model A15A has

insertion loss of 15

and

input

and output impedance of 150 ohms.

It is symmetrical, so it can be used in either

dire

ction.

A15LA LINE

INPUT

ADAPTER (Blue Nameplate) Converts balanced low

impedance microphone

input

line

l input. Provides a

simple

means

of using existing microphone level inputs for hi

level signals. It has a

balanced bri

dging

input (100,000 ohms). Attenuation is 50 db.

A15HP HIGH

PASS FILTER (Gray Nameplat

ovides a low-frequency

cut-off to reduce all types of unwanted low-frequency mechanical noises,

such

boom, stand, or floor rumble; or electrical hum; or environmental

sounds such

crowd noise, wind sounds, air

conditioner

rumble. Can

also

used as

equalizer to create s

cial effects. Slope is

per

octave, down 3

at 100 Hz with 150 ohm load. One kHz loss is 0.5

mum.

A15LP

LOW PASS FILTER (Green Nameplate) Provides

high-frequency

cut-ott to reduce effects of objectionable

gh-frequency noises. Usef

for suppressing sibilance. Excellent for minimizing

difficult

"hiss,"

jin-

gling,

inkling, whistling sounds. Can also be used as

equalizer to

create special effect

Slope is 12

per octave, down 4

at 8 kHz

with

150 ohm load. One kHz loss is approximately 0.5 db.

A15PA PRESENCE ADAPTER

(Orange Nameplate) Adds controlled vocal

or instrumental

presence"

ing and broadcast applications.

Adds extra brilliance to sound systems.

Improves voice range intelligi-

bility. Provides a moderate response rise of 4

in the 3 to 5 kHz region.

at 500

with 150

m output load. It is symmetrica

so it

can

used

either direction.

A15RS RESPONSE SHAPER (Black Nameplate) Provides excellent

sibi-

lance filtering in broadcasting and recording applications. It may also

used to flatten response

microphones which exhibit a rising charac-

teristic

the 6 kHz region. It provides a 4

dip

response

the

6 k

region. One kHz loss

approximately 2

(150 ohm output load).

A15PR

PHASE REVERSER (Red Nameplate) Reverses the phase of a

lanced line without modification

the equipment. It is symmetrical

and can be used in either direction.

A15BT

BRIDGING TRANSFORMER (Br

n Nameplate) Balanced unit

that matches balanced or unbalanced devices

different impedances.

(33

K ohm primary, and 600 or 7,500 ohm secondary.)

A15TG

TONE GENERATOR (Whi

meplate) Produces a continuous

700

Sig

capable of driving low impedance balanced lines, and is

extremely useful in setting up and trouble-shooting audio equipment.

Plugs into microphone input to enable engineer

check

levels,

connec-

tions,

r inputs, cables, and speakers. Permits one man to do the work

of two. Powered by a miniature mercury battery.

A95 SERIES LINE TRANSFORMERS

High

qualit

y transforme

hich

make it possible to connect l

im-

pedance

(25-50 ohms or 150-250 ohms) lines to high impedance, or

vice versa, such

connecting

a low impedance mi

crop

hone to a high

impedance amplifier input. Solves problems of excessi

high fre-

quency

loss and objectionable hum when long lengths of cable are used.

Model A95U:

Model A95UF:

Model A95D:

Model A95FD:

Input - ProfeSSional three-pin Male audio conn

ectort·

Output - Amphenol

MCI

M type

connector

63.5 mm long x 19.9 mm diam.

(2%"

%")

Input - ProfeSSional three-pin Female audio connecto

rt·

Output - Amphenol

MC1

M type

connect

88.9 mm long x 19.9 mm diam.

(3%"

%")

Input - Standard

y."

in-line

two-conductor

pho

jack

Output - Professional three-pin Male audio con

nector,'

63.5 mm long x 19.9 mm diam.

(2V2"

%")

Input - Standard

y."

in-line two-

nductor phone ja

Output - ProfeSSional three-pin Female audiO

con

nectort·

88.9 mm long x 19.9 mm diam.

V2"

3f4

A97A

LINE

MATCHING

TRANSFORMER

High quality

ansfo

deS

igned

to match 1

ohm-600

m microphone outpu

to med ium

pedance (1-

m) devices.

ch as those frequently

ed in casselle recorders. Input-

professi

three-pin audio connec

(Ma

e)t

tput -

1 M type connec-

t Designed to mate with Cannon

series, Switchcraft

(O.G.) series

or equivalent connector.

* Mating

connector

supplied with unit.

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Shure VA 300 User Manual Page 18

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