Superlux PRA518 User Manual

JUST PLAY IT

PRA518 SERIES

Gooseneck

Condenser Microphone

User Guide

GOANG-FANNCO.,LTD.

2007, SUPERLUX I
LB10518AB01EN (Rev. 1)

nc.

Specifications

Type

Back Electret
Condenser Microphone

Element

Pressure gradient,
FET preamplifier

Polar pattern

Unidirectional (cardioid),
rotationally symmetrical about
microphone axis, uniform with
frequency. (Figure 1)

Frequency response

50 to 16,000 Hz (Figure 2)

Sensitivity

(at 1,000 Hz Open Circuit Voltage)

-39dBV/Pa (11mV/Pa)
1Pa=94dB SPL

Rated impedance

200Ω

Minimum load impedance

1000Ω

Equivalent noise level

(A-weighted)

26dB (IEC/DIN 651)

Model (figure 3)

PRA-518AS

Φ ¯

Max. 19mm, head 8mm,
total length 300mm, all flexible
gooseneck.

PRA-518AL

ΦΦ

Max. 19mm, head 8mm,
total length 600mm, 2 sections
of flexible goosenecks.

PRA-518BL

ΦΦ

Max. 19mm, head 8mm,
total length 600mm, 1 section of
flexible gooseneck.

Max. SPL

(1 k load)Ω

130dB SPL (THD 1% 1kHz)≦

Dynamic range

at 1 k LoadΩ

104dB

Power supply

9 to 52 VDC phantom power

Current consumption

3mA

Polarity

Pin 2 output positive voltage
(related to pin 3) when diaphragm
receives positive pressure.
(Diaphragm moving inward)

Connector

Integral 3 pin male XLR type

Finish

Black finish

Net weight

PRA518AS: 130g (4.59 oz.)
PRA518AM: 150g (5.29 oz.)
PRA518AL: 165g (5.82 oz.)
PRA518BM: 150g (5.29 oz.)
PRA518BL: 165g (5.82 oz.)

PRA-518AM

ΦΦ

Max. 19mm, head 8mm,
total length 450mm, 2 sections
of flexible goosenecks.

PRA-518BM

ΦΦ

Max. 19mm, head 8mm,
total length 450mm, 1 section of
flexible gooseneck.

250 Hz

500 Hz

1000 Hz

PRA518 SERIES

TYPICAL POLARPATTERN (Figure 1)

dB

10

0

-10

-20

RELATIVE RESPONSEIN dB

20 50 100 200 500 1000 2000 5000 10000 20000 Hz

PRA 518AS

Frequency Response

FREQUENCY INHz

TYPICAL FREQUENCYRESPONSE (Figure2)

PRA518 SERIES

PRA 518AM

Dimensions (Figure3)

PRA 518AL

2000 Hz

4000 Hz

8000 Hz

PRA 518BM

PRA 518BL

Description

PRA518 series are super-miniature gooseneck back electret condenser

microphones for conferences. They are designed to fit for the demands of

conferences in tailored frequency response, excellent cardioid polar

pattern, and high gain before feedback.

PRA-518 features innovated goosenecks that hardly have any noticeable

noise in flexing. Three lengths and three flexible modes are available to

suit different applications.

The supplied standard accessories intend for the fixing and installation

of general applications, while optional accessories are availed for

special applications.

Features

!

Extended frequency response and wide dynamic range to pick up
vocals accurately.

!

Balanced output to guarantee the long cable free of noise.

!

Three lengths and three flexible modes for different applications.

!

Unnoticeable head with diameter of 8mm, never block the user.

!

Supplied with standard base for conference and foam windshield.

Accessories

Supplied accessories

Standard base ------------------- HM22
Foam windshield --------------- S04-

Optional accessories

Gooseneck microphone base --------------- ------------ DS002
XLRF embedding socket with naked cable ends --- ---HM24
XLRF embedding socket with XLRM input ---------- -------HM24C
Anti-shock cover with lock-in device ----------- ------- HM23
XLR3F socket ------------------------------- -------- K3F2
XLR3F fixing base ---------------------- -------------- GT6F

DS002

Gooseneck

K3F2

microphone base

Standard base

------

---------

----

HM22

---------

----

-------

HM23

Anti-shock cover

with lock-indevice

S04

Foam windshield

HM24

XLRF embedding

socket withnaked cable ends

Assembling Diagram

HM22

HM23

HM24C

XLRF embedding

socket withXLRM input

GT6F

XLR3F fixingbase

Knowing your microphone

Superlux provides variety selection of microphones for professionals and amatures. To
know your microphone is the first step to successful result.

Type of transducer

Condenser

Extremely light weight diaphragm, very sensitive to sound. Very small versions
available for hiding applications. High performance condenser microphones are
regarded as standard equipment of recording studios for extreme detail capturing.
Operates with power, such as phantom or battery.

Powering microphone

Condenser microphones work with power. Professional standard is 48VDC phantom
power. Some microphones work with lower voltage as low as 1.5VDC, such as battery
power model. PRA518 SERIES work with 9~52VDC phantom only. Please make sure
your sound systemprovide adaquate power to the microphone.

About Frequency Response

Flat

Suitable for working at controlled environment, or for acoustic measurements.
Although people persuit flatness, but for none-professionals, it is a challenge to makes
it works asexpectation.

Using condenser gooseneck microphone

Uni-directional condenser microphone features very high sensitivity at -39dBV/Pa for
high intelligible speech application. Reduced off-axis sensitivity to keep lower
background noise and maximized on-axis sensitivity for highest gain before feedback
in live soundsystem.

User shall keep 15 cm to 40 cm from microphone, and maintain average speech level.
Up close will result excessive bass due to proximity effect which interfere intelligibility.
Maintain their speakingin front of the microphone for high gain before feedback.

Quality conference microphone incorporating built-in limiter to prevent distortion due
to exciting useror close up speaker.

Choices of gooseneck for various demands. For aesthetic, single or double bend
goosenecks are better choice over fully bend design. Low bending noise is another
important feature of good gooseneck microphone. User shall not bend the gooseneck
to hard or rush which may generate excessive noise which disturbs the audience.

In most cases, each attendee has his own microphone or share a microphone every 2
attendee. Although there are numbers of microphones in one space which is not a good
criterion for feedback problem, system operator shall keep as less turn-on microphone
as possible for best result. Auto-mixer is a good choice for multiple microphones
installation which limit the number of turn-on microphone at the one time. Advanced
auto mixer features dynamic threshold and auto gain reduction according to the
number of turn-onmicrophones to keep the same system gain.

Wind screen is vital for windy environment such as outdoor or close to air-conditioning
fan.

HM24

RED(+)SHIELD

BLACK (-)

BLACK (-)

RED(+)

3

12

SHIELD

3

12

Assemble dimensions

74mm

20mm

60mm

50mm

50mm

HM23 HM22

15mm

HM24C

3

12

BLACK (-)

RED(+)

SHIELD

20mm

74mm

Popular curve response

Based on years of practical experience of pro users. There are curves to be build for

Keep capsule and wind screen clean for good audio performance.

various applications, so that it is very simple to use the microphone for the purpose.
Limiting bandwidth, andemphasing are typical skill.

Maintainence

Variable response

Incorporating switchable filters to elliminates interference, such as sub-sonic filter to
cut air-conditioner and floor vibrations. And allows full flat when used in controlled

3

12

environment.

Directivity

Cardioid

Picks up most signal on axis. Rejects side and picks up least to the back. Suitable for
live sound re-inforcement. Apparent proximity effect and most singer likes to take this
bass boost advantageswhich is not good for speech.

Condenser microphone shall be kept in low humidity environment for best sound
performance. Store the condenser microphones in airconditioned room or dehumidifier
to keep away form moisture. Clean air is another important factor. Keep away from
smoking environment to avoid tar residuals.

PRO AUDIO

GF

Shanghai Shenzhen Taipei••

GOANG-FANN CO.,LTD.

3F, No.7,Alley2, Lane 342, Fu-Der 1st Road
Hsichih, Taipei,Taiwan

Tel [phone]:
Fax [phone]:
E-mail [e-mail]:
Http://www.superlux.com.tw