Superlux PRA-518AS, PRA-518BL, PRA-518AM, PRA-518AL, PRA-518BM User Manual

PRA518 SERIES

User Guide

Gooseneck

Condenser Microphone

GOANG-FANNCO.,LTD.

2007, SUPERLUX I
LB10518AB01EN (Rev. 1)

nc.

Specifications

Max. SPL

(1 k load)Ω

130dB SPL (THD 1% 1kHz)≦

Dynamic range

at 1 k LoadΩ

104dB

9 to 52 VDC phantom power

Power supply

Current consumption

3mA

Polarity

Integral 3 pin male XLR type

Connector

Black finish

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.)

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 (IEC/DIN 651)

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

Model (figure 3)

PRA-518AS

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

Φ ¯

PRA-518AM

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

ΦΦ

PRA-518AL

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

ΦΦ

PRA-518BM

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

ΦΦ

PRA-518BL

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

ΦΦ

Frequency Response

FREQUENCY INHz

RELATIVERESPONSE IN dB

dB

10

-10

-20

20 50 100 200 500 1000 2000 5000 10000 20000Hz

0

PRA518 SERIES

TYPICAL POLARPATTERN (Figure 1)

250Hz

500Hz

1000Hz

2000Hz

4000Hz

8000Hz

PRA518 SERIES

TYPICAL FREQUENCYRESPONSE (Figure2)

PRA518BM

PRA518AL

PRA518AM

PRA518AS

PRA518BL

Dimensions (Figure3)

Features

Description

PRA518 series are super-miniature gooseneck back electret condenser

microphones forconferences. They are designedto fit forthe demands of

conferences in tailored frequency response, excellent cardioid polar

pattern, andhigh gain beforefeedback.

PRA-518 features innovatedgoosenecks that hardly have anynoticeable

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

suit differentapplications.

The supplied standard accessories intend for the fixing and installation

of general applications, while optional accessories are availed for

special applications.

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

Balanced outputto guarantee thelong cable freeof noise.

Three lengthsand three flexible modesfor different applications.

Unnoticeable headwith diameter of8mm, never blockthe user.

Supplied withstandard base forconference and foam windshield.

HM22

Standardbase

S04

Foam windshield

Accessories

Supplied accessories

Optional accessories

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

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

------

---------

----

-------

---------

----

HM23

Anti-shock cover

with lock-indevice

K3F2

DS002

Gooseneck

microphonebase

JUST PLAY IT

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

HM24

XLRF embedding

socket withnaked cable ends

GT6F

XLR3F fixingbase

HM24C

XLRF embedding

socket withXLRM input

HM22

HM24

HM23

HM24C

12

3

12

3

RED(+)

SHIELD

BLACK(-)

12

3

12

3

RED(+)

SHIELD

BLACK(-)

RED(+)SHIELD

BLACK(-)

20mm

74mm

15mm

74mm

20mm

50mm

60mm

50mm

HM23 HM22

Assembling Diagram

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. PRA518 SERIES work with 9~52VDC 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

Directivity

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

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