Superlux PRA528B, PRA528C User Manual

PRA528B

CPRA528

User Guide

Gooseneck

Condenser Microphone

GOANG-FANNCO.,LTD.

2007, SUPERLUX I
LB10528BC01EN (Rev. 1)

nc.

Specifications

Back Electret
Condenser Microphone

Typ e

Pressure gradient,
FET preamplifier

Element

Polar pattern

50 to 16,000 Hz (Figure 2)

Frequency response

Sensitivity

(at 1,000 Hz Open Circuit Voltage)

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

200Ω

Rated impedance

1000Ω

Minimum load impedance

Equivalent noise level

(A-weighted)

26dB

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

PRA528 SERIES

TYPICAL POLARPATTERN (Figure 1)

PRA528 SERIES

TYPICAL FREQUENCYRESPONSE (Figure2)

Dimensions (Figure3)

Features

Description

Supplied accessories

Optional accessories

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

------------------------------

--

------------------------------

Standard base -------- ----------- HM22
Screw flange for 5/8" thread ------ --------------- GT4B
P --------- ---- S21F

------------------------------

--------------

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

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

------

--

-

Max. SPL

(1 k load)Ω

132dB SPL (THD 1% 1kHz)≦

Dynamic range

at 1 k LoadΩ

106dB

9 to 52 Vdc phantom power

Power supply

Current consumption

3mA

JUST PLAY IT

The PRA528 operates between

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

Environmental conditions

Net weight

Model

( figure 3)Dimensions

PRA-528BM

PRA-528CL

PRA-528BL

Head 12.5mm, total length
450mm, 1 section of flexible
gooseneck.

Φ

Head 12.5mm, total length
600mm, 1 section of flexible
gooseneck.

Φ

Head 12.5mm, total length
450mm ( ), 1
section of flexible gooseneck.

Φ

without flange

Head 12.5mm, total length
600mm ( ), 1
section of flexible gooseneck.

Φ

without flange

PRA-528CM

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

Polarity

3 pin male XLR type

Connector

Black paint

Finish

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

PRA528BL

PRA528CM

PRA528CL

PRA528BM

250Hz

500Hz

1000Hz

2000Hz

4000Hz

8000Hz

FREQUENCY INHz

Frequency Response

RELATIVERESPONSE IN dB

dB

10

-10

-20

20 50 100 200 500 1000 2000 5000 10000 20000Hz

0

PRA528B

PRA528C

HM22

Standard base

S21F

Foam windshield

GT4B

Screw flange

for 5/8"thread

HM23

Anti-shock cover

with lock-indevice

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 themthe ideal candidates for conference.
There are two membersin 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.

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Extended frequency response and wide dynamic range to pick up vocals
exactly and clearly.
Balanced output to ensure the signal transference free of noise in long
cable.
Two gooseneck lengths and two installation modes for different
applications.
PRA528 are tested with 2000 noiseless bending cycles to ensure
durability.
Comes with standard base and pop screen for easy installation and up­close speech.

PRA528B

PRA528C

HM22

Standardbase

HM22

Standardbase

GT4B

Screwflange

for5/8" thread

GT4B

Screwflange

for5/8" thread

Linkingmode (1)

Linkingmode (2)

Linkingmode (3)

Linkingmode (4)

Lockpin
Supplied

With

Linker

Linker

Preamplifier

MIC.
Flexidle

MIC.
Flexidle

MIC.
Flexidle

Step1 Takedown bolt andcap
Step2 Re-lockbolt and cap

Linkingpoint

3mcable

3mcable

3mcable

PCB

HM22

HM24

HM23

HM24C

12

3

12

3

RED(+)

SHIELD

BLACK(-)

12

3

12

3

RED(+)

SHIELD

BLACK(-)

RED(+)SHIELD

BLACK(-)

Assembling Diagram

20mm

74mm

15mm

HM22

74mm

20mm

50mm

60mm

50mm

HM23

Assemble dimensions

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 orbattery.

Knowing your microphone

Superlux provides variety selection of microphones for professionalsand amatures. To
know your microphoneis the first step tosuccessful result.

Type of transducer

Condenser

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 themicrophone.

Powering microphone

About Frequency Response

Suitable for working at controlled environment, or for acoustic measurements.
Although people persuitflatness, but for none-professionals, it is achallenge to makes
it works asexpectation.

Flat

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.

Popular curve 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.

Variable response

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 forspeech.

Cardioid

Directivity

Maintainence

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 frommicrophone, and maintain average speech level.
Up close willresult excessive bass due toproximity effect which interfere intelligibility.
Maintain their speakingin front of the microphonefor high gain beforefeedback.

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 hardor rush which may generate excessivenoise which disturbs the audience.

In most cases, each attendee has his own microphone or share a microphone every 2
attendee. Although thereare numbers of microphones inone space which is not agood
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 samesystem gain.

Wind screen isvital for windy environment such asoutdoor or close to air-conditioning
fan.

Keep capsuleand wind screen clean forgood audio performance.

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

Using condenser gooseneck microphone

GF

PRO AUDIO

Shanghai Shenzhen Taipei••

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

GOANG-FANN CO.,LTD.

3F,No.7,Alley 2,Lane342, Fu-Der1stRoad
Hsichih,Taipei, Taiwan