Superlux PRO258 User Manual

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Specifications

PRO248/PRO248S PRO258

Type

Dynamic microphone

Element

Pressure gradient

Polar pattern

Unidirectional (Super 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)

-54dBV/Pa (2.0mV/Pa)
1Pa=94dB SPL

Rated impedance

300Ω

Max. SPL

150dB SPL (THD 1% 1kHz)≦

(1 k load)Ω

Type

Dynamic microphone

Element

Pressure gradient

Polar pattern

Unidirectional (Super Cardioid),
rotationally symmetrical about
microphone axis, uniform with
frequency. (Figure 3)

Frequency response

50 to 16,000 Hz (Figure 4)

Sensitivity

(at 1,000 Hz Open Circuit Voltage)

-54dBV/Pa (2.0mV/Pa)
1Pa=94dB SPL

Rated impedance

300Ω

Max. SPL

150dB SPL (THD 1% 1kHz)≦

(1 k load)Ω

250 Hz

500 Hz

1000 Hz

TYPICAL POLARPATTERN (Figure 1)

dB

10

-10

-20

RELATIVE RESPONSEIN dB

3mm

0

20 50 100 200 500 1000 2000 5000 10000 20000 Hz

25mm

50mm

0.6M

PRO248/248S

Frequency Response

FREQUENCY INHz

2000 Hz

4000 Hz

8000 Hz

PRO248/248S

TYPICAL FREQUENCY RESPONSE (Figure2)

PRO248S applies a switch

PRO248/PRO248S PRO258

PRO248/248S/258

Dimensions (Figure 5)

PRO248/248S
PRO258

Professional Dynamic Microphone

User Guide

GOANG-FANNCO.,LTD.

2007, SUPERLUX I
LB100025801EN (Rev. 1)

Connector

3 pin male XLR type

Finish

Titanium blue paint

Environmental conditions

The PRO248/PRO248S operates
between -10 to +50 (14
to 122 ) with relative humidity
between 0 to 95%.

Dimensions

Φ52.0mm(2.05in.) X 165.0mm
(6.50in.) (Figure 5)

Net weight

PRO248: 270g (9.50 oz.)
PRO248S: 285g (11.20oz.)

Connector

3 pin male XLR type

Finish

Titanium blue paint

Environmental conditions

The PRO258 operates between

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

Dimensions

Φ42.0mm(1.65in.) X 165.0mm
(6.50in.) (Figure 5)

Net weight

280g (11.00 oz.)

250 Hz

500 Hz

1000 Hz

TYPICAL POLARPATTERN (Figure 3)

dB

10

0

-10

-20

RELATIVE RESPONSEIN dB

20 50 100 200 500 1000 2000 5000 10000 20000 Hz

Frequency Response

PRO258

FREQUENCY INHz

2000 Hz

4000 Hz

8000 Hz

PRO258

TYPICAL FREQUENCY RESPONSE (Figure4)

Description

The PRO248/248S/258 microphones are designed for professional vocal
and instrument live sound applications. These dynamic super cardioid
microphones incorporating neodymium magnets and aluminum voice coil
on the double membrane diaphragm and output transformer, that provides
higher output sensitivity, flat and wide frequency response. The result is
clean and detail sound texture demanded by the working professionals.

The grill windscreen are made of strengthen metal mesh, added with zinc
alloy shaft and gold plated XLR 3 pin connectors provides sturdy
performance for heavy stage works.

Features

PRO248 ball grill windscreen are welcome by most signers.

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PRO258 flat and smaller grill windscreen allows closer pickup for

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instruments or for signer preference.
PRO248S incorporating an silent On/Off magnetic spring switch with

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locking plate.

nc.

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Typical and classical vocal frequency response.

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Designed for lead vocal, speech, and human voice performances.

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High intelligibility.

?

Super cardioids polar pattern, high GBF (gain before feedback).

Supplied accessories

Mic clip ------- -------- HM38S

-

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

5/8" ~ 3/8" adapter -------- -- -

--

---------------- ------------- Ya1

HM38S

Mic clip

YA1

Adapter

Related accessories

Foam windscreen, various color -- --------- - - - S40
Table stand --- ---- --------------- ---- M6

-------- - --- ---- H

Boom stand -------------- ---- -------------- ----- --- MS131
Instrument boom stand ----- ----------- --- s104

S40

Foam windscreen

MS131

Boom stand

- - -- - ---

- - ---

------- - -------M

--------

---- -----

----- -

- -----

HM6

Tablestand

MS104

Instrument

boom stand

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

Dynamics

Durable and simple structure, operates in all kinds of environments. A good dynamic
microphone is capable to operate at very high sound pressure level without distortion.
Due to structure limit, dynamics cannot be built as small as condenser, but dynamics

doesn requirepower to operate.

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.

Directivity

Super Cardioid

Narrower than cardioid pattern. Suitable for multiple microphone setup. Least sensitive
angle pointing toward side to rear where most stage monitors are located. Same
proximity effect as cardioid microphone.

Using a handheld microphone

For best signal to noise ratio, distance from the handheld microphone to the sound source
shall be asshort as possible.

For higher gain before feedback and lowest background noise, the microphone shall be
pointed directly to the sound source. (refer to the illustration below) The sensitivity of a super
cardioid microphoneis highest on axis and lowest at 120 to 135 degrees.

To avoid interference between multiple microphones, each sound source shall be picked-up
by one microphone, use as less microphones as possible in one space, or turn-on as less
microphones as possible at the same time.

To reduce crosstalk between microphones, an 1:3 guide line shall be follow: The distance
between microphone A to the sound source A is 1 , the distance between any other
microphone to the sound source A shall be more than 3 times.

When the (super) cardioid microphone get closer to the sound source, the low frequency
response is boosted, as so call proximity effect . Experience singer takes advantages of
the proximity effect to improve the richness of his/her voice or to increase the bass of the
instrument as if an extremely high quality equalizer is used. Same idea to reduce the bass by
increase the distance to reduce the bass when needed.

Reflecting surface affect sound as well. Beware of these surfaces such as wall, table, or floor.
Place the microphone away from the hard surfaces or directly contact these surfaces to form a
pressure zonemicrophone.

When using the microphone outdoor or in windy environment, additional foam wind screen
helps to reduce wind noise.

Keep grill pop screen clean to avoid degrading the sound quality. Do not expose the
microphone at high humidity/temperature environment to avoid damage.

Monitor

Loudspeaker(s)

“”

120 ~135°°

90°

“”

180°

90°°

20-50mm

Loudspeaker Locations

0°

120 ~135°°

Recommended

P.A.System

Loudspeaker

Mounting the microphone

Pressure gradient microphone is very sensitive to vibration. Suitable shock mount for
high performance microphone is necessary for extreme low noise recording. Sturdy
stand can set the microphone excatly at the sweet spot and keep it there. Choose heavy
duty microphone stand for studio condenser microphone which weights much more
than handle microphone.

Superlux provides wide range of microphone stands for various demands. Big Foot
Willie is specially developed for large condenser microphones that able to support 2
large microphoneswith stereo bracket for single point stereo recording.

Extension foot on all the 'E' versions serve to mount heavy studio microphone in limit
space live soundapplications.

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