Superlux PRA538S, PRA538M, PRA538SS, PRA538MS, PRA538MS/P User Manual

User Guide

Install Gooseneck

Dynamic Microp hon e

G O A N G - F A N N C O . , L T D .

2007, SUPERLUX I
LB100053801 EN (Rev. 1)

nc.

J U S T P L A Y I T

－1

Sp ec ifi ca ti on s

Hea vy dut y goo seneck

Type

Pola r pat tern

100 to 15, 000 H z (Fig ure 2)

Fre quenc y resp onse

Sen sitiv ity

(at 1,000 Hz Op en Cir cuit Voltag e)

-58 dBV/Pa (1.2 6mV/Pa ) 1Pa=9 4dB SPL.3 dB

500 Ω

Rat ed imp edanc e

500 Ω

Min imum load im ped ance

Uni direct ional (Sup er Card ioid) , rota tiona lly s ymmet rical about
mic rophon e axi s, uni form w ith f requen cy. (F igure 1).

The PRA5 38 op erate s be tween -10℃ to +50℃( 14℉ to 12 2℉) with
rela tive humi dity betwe en 0 to 9 5%.

Env ironm ental cond itio ns

str iped w ire co nnect ion,c olor c oded.

Con necto r

met al str uctur e,mat te bla ck pai nting .

Fin ish

Dim ensio ns

Net weig ht

150 g (5.2 9oz.)

PR A538 S 3 2.0 mm(1 .26 in. ) X 40 0.0 mm( 15.7 5in .)

PR A538 M 3 2.0 mm(1 .26 in. ) X 58 0.0 mm( 22.8 3in .)F igur e 3

PRA538

－2

TYPIC AL SUP ERCAR DIOID P OLAR PA TTERN ( Figur e 1)

TYPIC AL FRE QUENC Y RESPO NSE (Fi gure 2)

2000 Hz

4000 Hz

8000 Hz

250 Hz

500 Hz

1000 Hz

FREQ UENCY I N Hz

Fre quenc y Respo nse

RELATI VE RESP ONSE IN d B

dB

10

-10

-20

20 50 100 200 500 1000 2 000 5000 10000 200 00 Hz

0

! Tailo red fre quenc y respo nse to inc rease t he int angib ility o f audi o

rein force ment or re cordin gs.

! Sup er cardi oids in crease g ain bef ore fee dback .

! Mat te blac k coatin g with st urdy st ructu re.

! 2 len gths to c hoise: 1 2" (PRA 538S) o r 19" (PR A538M ).

! Add ition al S suff ix indi cates a m uting o n/off s witch i s integ rated .

(PR A538S S, PRA53 8MS).

! PRA 538MS/ P inco rpora ting a PT T (push -to-t alk) fu nctio n that ca n

remo te cont rol oth er devic es. A GT2 C is incl uded.

! Tinn ed strip ed wires fo r i nstal latio n conve nienc e. Balan ced sign al,

ple ase refe r to wiri ng diag ram for c onnec tion in dicat ions.

Fe at ur es

Di mensi on s (fi gur e 3)

The PRA538 serie s go oseneck micropho nes a re su per c ardioid, dynamic
type cap sule integr ated with in ternal shoc k mount to redu ce handling noise.
Tailored frequency response i s very suitable for huma n voices applicati ons
such as spee ch, ann ouncement in pub lic tr ansportati on sys tems an d
gather ing venues.

－3

Su pp lie d ac ce ss ori es

Pop s creen --- ----- ----- ----- ----- ----- ----- ---- -- ----- -- --- - S19

－5－4 －6

Low handl ing noise , bend an d set, min imized bo unce back gooseneck tube
has very g ood service tim e.

Easy to install with 3 scre ws to most surfac es. Pl ease re fer to the wiring
inform ation below.

S19

Wind scree n

Knowing your microphone

Superl ux prov ides variety selecti on of microp hones for professiona ls an d
amature s. To know your microph one is the first s tep to success ful result.

Type of transducer

About Frequency Response

Sui table for wor king at c ontro lled enviro nmen t, o r fo r ac ousti c
mea sure ments . Al thou gh p eopl e pe rsui t fl atne ss, but f or n one­profess ionals, it is a ch allenge to make s it works as expe ctation.

Flat

Based on years of practi cal exper ience of pro users. There are curves t o be
build fo r vari ous a pplication s, so th at it i s very s imple to use th e
microph one for the pu rpose. Limi ting bandwi dth, and emph asing are typ ical
skill.

Popular curve r esponse

Incorp orating switch able filters to ellim inates interf erence, such as sub­sonic filter to cut air-condition er and floor vibra tions. And a llows full f lat
when use d in controlled e nvironment.

Variabl e response

Directivity

Maintainence

Super C ardioid dyn amic microph one feature s very high sensit ivity at ­43dBV/ Pa f or high intelligibl e speech applicati on. Reduc ed off-ax is
sensit ivity to keep low er backg round no ise and maximized on-axis
sensit ivity for high est gain before f eedback in live s ound system.

User shall keep 15 cm to 40 cm from microphon e, and mainta in ave rage
speech level . Up close will resul t exc essive bass due to pro ximity effect
which in terfere inte lligibilit y. Mai ntain their speaki ng in f ront o f the
microph one for high gai n before feedba ck.

Qualit y conference microp hone incor porating b uilt-in li miter to p revent
distor tion due to exci ting user or clo se up speaker.

Choice s of goose neck for various de mands. For aestheti c, single or double
bend goosen ecks are b etter choice over fully bend des ign. Low ben ding
noise is anoth er i mportant feat ure o f go od g ooseneck microp hone. User
shall n ot bend the gooseneck to hard or ru sh which ma y generate excessive
noise wh ich disturbs t he audience.

In most cases, each at tendee has his own microph one o r sh are a
microph one every 2 att endee. A lthough there are numbers of micro phones
in one sp ace wh ich is not a go od cri terion for fe edback problem, system
operat or shall keep as less turn -on microp hone as possible for best result.
Auto-m ixer i s a good choice for multi ple mi crophones instal lation which
limit the numbe r of turn -on m icrophone at the one time. Advanc ed a uto
mixer features dynamic threshold and auto gain re duction a ccording to the
number o f turn-on micro phones to keep th e same system ga in.

Wind s creen is vital for windy en vironment such as o utdoor or close to air­condit ioning fan.

Keep caps ule and wind scre en clean for goo d audio perfor mance.

Dynami c mic rophone shall be kept in l ow hu midity environme nt fo r bes t
sound per formance. St ore the condense r microphones i n airconditio ned
room or dehum idifier to keep a way form moisture . Clean air is anoth er
import ant f actor. Keep awa y from smokin g envi ronment to av oid t ar
residua ls.

Using dynamic gooseneck microphone

Narrowe r t han cardioid pa ttern. Suita ble for multipl e microphone se tup.
Least sensi tive angle po inting toward s ide to rear where mo st stage monit ors
are locat ed. Same proxim ity effect as card ioid micropho ne.

Super Cardioid

Durabl e and simple structure, operates in all kinds o f environmen ts. A good
dynami c microphone is c apable to op erate at very h igh sound pres sure level
withou t distorti on. Due to st ructure lim it, dynamic s cannot be built as sma ll
as conde nser, but dynami cs doesn require p ower to operat e.

Dynami cs

Wi ri ng di ag ra m

PRA 538S/ PRA53 8M

Mic .
Uni t

Shi eld

Bla ck

Red

Col d

Hot

PRA 538SS /PRA5 38MS

Mic .
Uni t

Bla ck

Shi eld

Red

Col d

Hot

PRA 538MS /P

Whi te

Gre en

Bla ck

Red

Mic .
Uni t

Shi eld

Col d

Hot

PTT SW.

SW.