Superlux PRA528 User Manual

JUST PLAY IT

PRA528B

CPRA528

Gooseneck

Condenser Microphone

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

Max. SPL

132dB SPL (THD 1% 1kHz)≦

(1 k load)Ω

Polarity

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

Connector

3 pin male XLR type

Finish

Black paint

Environmental conditions

The PRA528 operates between

-10to+50(14to
122 ) with relative humidity
between 0 to 95%.

Net weight

PRA528BM: 150g (5.29 oz.)
PRA528BL: 160g (3.65 oz.)
PRA528CM: 200g (7.05 oz.)
PRA528CL: 220g (7.75 oz.)

Model

( figure 3)Dimensions

PRA-528BM

Head 12.5mm, total length

Φ

450mm, 1 section of flexible
gooseneck.

PRA-528BL

Head 12.5mm, total length

Φ

600mm, 1 section of flexible
gooseneck.

250 Hz

500 Hz

1000 Hz

dB

10

0

-10

-20

RELATIVE RESPONSEIN dB

20 50 100 200 500 1000 2000 5000 10000 20000 Hz

TYPICAL FREQUENCY RESPONSE (Figure2)

PRA528 SERIES

TYPICAL POLARPATTERN (Figure 1)

Frequency Response

FREQUENCY INHz

PRA528 SERIES

PRA528BM

PRA528BL

2000 Hz

4000 Hz

8000 Hz

Description

PRA-528B/C series are stationary gooseneck microphones for conferences;
they feature a back-electret condenser construction. Their tailored
frequency response, excellent cardioid polar pattern and high gain before
feedback make them the ideal candidates for conference.
There are two members in this series: PRA528B is a plug-in microphone for
quick installation, while PRA528C is a short-based microphone with a
separated preamplifier. Each mode has a section of adjustable gooseneck,
which makes it convenient to change the direction. There are two lengths
and various installing modes to accommodate the demands of different
applications.

Features

Extended frequency response and wide dynamic range to pick up vocals

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exactly and clearly.

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Balanced output to ensure the signal transference free of noise in long
cable.

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Two gooseneck lengths and two installation modes for different
applications.

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PRA528 are tested with 2000 noiseless bending cycles to ensure
durability.

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Comes with standard base and pop screen for easy installation and up­close speech.

Supplied accessories

PRA528B

Standard base -------- ----------- HM22
Anti-shock cover with lock-in device ------ ------------------- HM23
Foam windshield ------------ ---- S21F

PRA528C

Standard base -------- ----------- HM22
Screw flange for 5/8" thread ------ --------------- GT4B

op screen ---------------------------------------

P --------- ---- S21F

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User Guide

GOANG-FANNCO.,LTD.

2007, SUPERLUX I
LB10528BC01EN (Rev. 1)

Dynamic range

106dB

Power supply

9 to 52 Vdc phantom power

Current consumption

3mA

nc.

at 1 k LoadΩ

PRA-528CM

Head 12.5mm, total length

Φ

without flange

450mm ( ), 1
section of flexible gooseneck.

PRA-528CL

Head 12.5mm, total length

Φ

without flange

600mm ( ), 1
section of flexible gooseneck.

PRA528CM

PRA528CL

Dimensions (Figure3)

HM22

Standard base

HM23

Anti-shock cover

with lock-indevice

S21F

Foam windshield

GT4B

Screw flange

for 5/8"thread

Optional accessories

Gooseneck microphone base --------------------------------- DS002
XLR female socket with open ends cable -------- ------- HM24
XLR female socket with XLR male plug ------------ --------- HM24C
Pop screen --------------------------------------------------- S22F
Surface mount XLR3F base ---------------- ------------------ GT6F

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Assembling Diagram

PRA528B

HM22

HM23

Assemble dimensions

20mm

15mm

74mm

HM22

Directivity

74mm

20mm

60mm

50mm

50mm

HM23

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 notgood for speech.

HM24

PRA528C

MIC.
Flexidle

3m cable

Linker

Lockpin

Supplied

With

Standardbase

Linking mode(1)

3

12

HM22

BLACK (-)

BLACK (-)

RED(+)

SHIELD

3m cable

Preamplifier

Linking mode(2)

RED(+)SHIELD

MIC.
Flexidle

for 5/8"thread

3

12

GT4B

Screwflange

HM24C

3

12

MIC.
Flexidle

Linker

Standardbase

Linking mode(3)

BLACK (-)

RED(+)

SHIELD

Linking point

Step 1Take downbolt and cap
Step 2Re-lock bolt andcap

HM22

PCB

3

12

3m cable

GT4B

Screwflange

for 5/8"thread

Linking mode(4)

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. PRA528 series work with 9 to 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.

Popular curve response

Based on years of practical experience of pro users. There are curves to be build for
various applications, so that it is very simple to use the microphone for the purpose.
Limiting bandwidth, andemphasing are typical skill.

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
environment.

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 microphonefor high gain before feedback.

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

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.

Keep capsule and wind screen clean for good audio performance.

Maintainence

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