Sennheiser MKH 418-S - Manual de usuario

MKH 418-S

Instruction manual

Important safety instructions

1. Read these safety instructions and the instruction manual

of the product.

2. Keep these safety instructions and the instruction manual

of the product. Always include all instructions when pass-

ing the product on to third parties.

3. Only use attachments, accessories and spare parts speci-

ﬁed by the manufacturer.

4. Caution: The protective basket and pop shield must be

completely dry when you mount them on the microphone.

Moisture can cause malfunctions or damage to the capsule

5. Connect the microphone only to microphone inputs and

supply units that provide 48V phantom powering in accor-

dance with IEC 61938.

6. Do not attempt to open the product housing on your own.

The warranty is voided for products opened by the customer.

7. Refer all servicing to qualiﬁed service personnel. Servic-

ing is required when the product has been damaged in any

way, liquid has been spilled or objects have fallen into the

product, when the product has been exposed to rain or

moisture, does not operate normally, or has been dropped.

8. Use the product only under the conditions of use listed in

the speciﬁcations.

9. Let the product come to ambient temperature before

switching it on.

10. Do not operate the product if it was damaged during trans-

portation.

11. Always run cables so that no one can trip over them.

12. Keep the product and its connections away from liquids

and electrically conductive objects that are not necessary

for operating the product.

13. Do not use any solvents or aggressive cleaning agents to

clean the product.

14. Caution: Very high signal levels can damage your hearing

and your loudspeakers. Reduce the volume on the connect-

ed audio devices before switching on the product; this will

also help prevent acoustic feedback.

Intended use

The product is designed for indoor and outdoor use. The prod-

uct can be used for commercial purposes.

It is considered improper use when the product is used for any

application not named in the corresponding instruction manual.

Sennheiser does not accept liability for damage arising from

improper use or misuse of this product and its attachments/

accessories.

Before putting the products into operation, please observe the

respective country-speciﬁc regulations!

Package contents

• Condenser microphone MKH 418-S

• Instruction manual

• Transport case

Stereo Condenser Microphone

MKH 418-S

Brief description

The MKH 418-S is an MS stereo microphone. Its high degree

of directivity makes the MKH 418-S the ideal choice for ste-

reophonic recordings for reporting, ﬁlm and television appli-

cations.

The microphone is designed for 48 V phantom powering and

operates using the RF principle. This principle ensures high

operational reliability, even under extreme climatic conditions.

The MKH 418-S has two independent acoustic systems for

generating the mid and side signals. The mid signal (M) is gen-

erated by a shotgun microphone system. At high frequencies,

this results in a lobar pick-up pattern, whereas at low frequen-

cies there is a transition to a super-cardioid characteristic. The

side signal (S) is produced by a ﬁgure-of-eight capsule, whose

positive side is directed to the left. The M and S signals are

available independently at the microphone output. The micro-

phone is positioned correctly when the word „TOP” is pointing

upwards.

Powering

The MKH 418-S is designed for 48 V phantom powering. To

ensure proper operation of the microphone, the two channels

always have to be powered simultaneously, even if only the sig-

nal of one channel is required. If no 48 V phantom powering is

available at the microphone input of the subsequent device,

suitable power supply units must be interconnected.

The MKH 418-S is connected via a 5-pin XLR cable. The con-

nector of the MKH 418-S has standard pin assignment:

Pin 1 = Casing/ground

Pin 2 = M channel (+)

Pin 3 = M channel (-)

Pin 4 = S channel (+)

Pin 5 = S channel (-)

Notes on MS Stereo Sound Recording

The MS signal format of the MKH 418-S provides a particularly

easy means of setting the optimum balance between the main

information of the mid channel and the spatial contribution of

the side channel. This balancing can even be performed during

re-processing without a loss of information if the original MS

signals were recorded.

The MS signal format is converted into the XY format (ie: stan-

dard left/right stereo) by adding or subtracting the signals ac-

cording to the principle X = M + S, Y = M – S. The proportion

of the S signal inﬂuences the spatial effect and should be cho-

sen in each case in accordance with the recording situation.

In order to avoid restricting the possibilities of designing the

sound impression, MS – XY matrixing in the microphone was

not employed.

If a matrix circuit is not available on the mixing console, matrix-

ing can be performed using the 3-fader method.

L R

+ + -

3 dB

The M signal is connected to the ﬁrst microphone channel and

panned centre. The S signal is connected to the second channel

and panned full left. Take an output from the second channel

and connect to the third channel panned full right and phase

reversed (via a phase reverse switch or via the cable). (To set

the correct S signal level - set the pan controls of channel two

to central, set the main fader to normal level and set the cor-

rect level at the preset. Then, set the pan control of channel 3

to centre, set the main fader to the same level as channel two

and then adjust the pre-set of channel three until the signal to-

tally disappears – the two channels are now set identical – now

pan channel two fully left and channel three fully right for nor-

mal operation). Channels two and three are controlled as a sin-

gle fader (mechanically or electrically coupled together). The

stereo width is controlled by the relative levels – less side is a

narrower image, more side is a wider image. The displacement

of the faders by 3 dB, as shown in the diagram as an example,

results in 1:1 ratio matrixing.

During matrixing, it should be taken into account that the di-

rection of off-axis sound signals can be determined less and

less at high frequencies due to the increasing directivity of the

shotgun microphone. This may lead to diffused spatial effects,

which can be desirable or undesirable depending on the re-

cording situation. In case of doubt, the proportion of the S sig-

nal should not be chosen too high. In some cases, it might be

necessary to reduce the treble in the S channel on the mixing

console. At low frequencies below 300 Hz, it is very difﬁcult to

locate sounds for physiological reasons. Since the S system of

the microphone, due to its design principle, is more sensitive

than the M system to low-frequency interference caused for

example by wind, the bass in the S channel should be reduced

if required (eg: with a high-pass ﬁlter).

Manufacturer Declarations

Warranty

Sennheiser electronic GmbH & Co. KG gives a warranty of 24

months on these products.

For the current warranty conditions, please visit our website at

www.sennheiser.com or contact your Sennheiser partner.

In compliance with the following requirements

• WEEE Directive (2012/19/EU)

Notes on disposal

The symbol of the crossed-out wheeled bin on the product, the

battery/rechargeable battery (if applicable) and/or the pack-

aging indicates that these products must not be disposed of

with normal household waste, but must be disposed of sep-

arately at the end of their operational lifetime. For packaging

disposal, please observe the legal regulations on waste segre-

gation applicable in your country.

Further information on the recycling of theses products can be

obtained from your municipal administration, from the munici-

pal collection points, or from your Sennheiser partner.

The separate collection of waste electrical and electronic

equipment, batteries/rechargeable batteries (if applicable)

and packagings is used to promote the reuse and recycling

and to prevent negative effects caused by e.g. potentially haz-

ardous substances contained in these products. Herewith you

make an important contribution to the protection of the envi-

ronment and public health.

EU Declaration of conformity

• RoHS Directive (2011/65/EU)

• EMC Directive (2014/30/EU)

The full text of the EU declaration of conformity is available at

the following internet address:

www.sennheiser.com/download

Compliance

Europe

Russia

Speciﬁcations

Frequency response 40 - 20,000 Hz

Transducer principle RF condenser microphone

Acoustic operating prin-

ciple M: pressure gradient / interfe-

rence tube receiver

S: pressure gradient receiver

Pick-up pattern M: super-cardioid/lobar

S: ﬁgure-of-eight

Sensitivity (1 kHz) M: 25 mV/Pa (-32 dBV)

S: 10 mV/Pa (-40 dBV)

Output impedance (1 kHz) < 25 Ω

Min. load impedance 1 kΩ

Equivalent noise level M: 14 dB-A / 26 dB-CCIR

S: 22 dB-A / 34 dB-CCIR

Max. SPL 130 dB SPL (63 Pa)

Power supply P48: 48 ± 4 V / 2 x 2.3 mA

Temperature range Operation: -20 to +60 °C

Max. output voltage 1.5 V

Connector 5-pin XLR, male

Dimensions Ø 19 mm x 280 mm

Weight 220 g

Frequency response

-10

-20

-30

5040 100 200 500 1000 2000 5000 10000 20000 Hz

-10

-20

-30

5040 100 200 500 1000 2000 5000 10000 20000 Hz

Polar Pattern

M (5 dB/div)

125 Hz 250 Hz

0 0

500 Hz 1 kHz

2 kHz 4 kHz

8 kHz 16 kHz

S (5 dB/div)

125 Hz 250 Hz

0 0

500 Hz 1 kHz

2 kHz 4 kHz

8 kHz 16 kHz

X = M + S (5 dB/div)

125 Hz 250 Hz

0 0

500 Hz 1 kHz

2 kHz 4 kHz

8 kHz 16 kHz

Y = M - S (5 dB/div)

125 Hz 250 Hz

0 0

500 Hz 1 kHz

2 kHz 4 kHz

8 kHz 16 kHz

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