Sennheiser SER 1-3 User Manual download pdf (Page 48)

Sennheiser

MKH Range

RF CONDENSER

MICROPHONES

The Sennheiser condenser

microphones

using

RF circuitry are

market leaders in

far

their

electro- acoustical characteristics are concerned.

They

have

also distinguished themselves

by their

remarkable resistance to climatic conditions

over

many years

intensive use.

RF circuitry

By contrast

with

condenser

microphones with a

conventional

dc-bias, the RF circuitry

the

capsule of a condenser

microphone produces a

low

impedance in the actual condenser transducer

element.

The RF voltage

across

the transducer

only

in the order of

Volt

instead

of the

high dc-

bias

voltage which is

otherwise

necessary, this

voltage being generated by a

noiseless

oscillator

(8 MHz). The

high

operational

reliability of the

microphone is, attributable to the capsule

impedance.

The principle of

voltage matching

used

connecting

up both the Sennheiser condenser

microphones

and

dynamic microphones.

There

are

adverse

level or

frequency response

effects between

microphone

and

connected

equipment

owing to the extremely

low- impedance

circuits.

Power supply

Sennheiser offers condenser

microphones for

both standardised

powering

systems,

the audio

conductor

and phantom

powering.

Both

powering

modes

permit

the use of the same connecting

leads

the operational

dynamic studio

micro-

phones. The power can be supplied

by battery

adaptor or

mains powerpack.

The 12 V

audio

conductor or

powering

offers a

simple

method for the use of battery

adaptors.

Mains powerpacks

are generally available

for the

48 V phantom technology.

In studio use the

powering

voltage is made available primarily

from

the

centralised

mixing board.

AB voltage sources

must be switched off

when

dynamic

microphones are connected up.

Normally

phantom voltage sources can

remain

switched

where dynamic

microphones are connected.

Sennheiser

use the

method laid down in standard

specifications for

identifying the powering

mode:

for AB

powered

microphones

the suffix

T is

used

and

for phantompowered microphones the

suffix

conjunction

with the

powering

voltage.

The MKH

110

and

MKH

101 -1 low frequency

microphones deviate

from

the

standard speci-

fication, these being

powered asymmetrically

via

special

mains

powerpack

units.

Interference protection

Sennheiser

condenser

microphones

display

very

high output

levels, which reduces the danger

interference

feedback by more than 20 dB by

comparison

with

dynamic

microphones.

Conse-

quently it

is not necessary to impose any specially

high

symmetrical

requirements for the connecting

leads.

The

microphones are also

provided

with

generously

proportioned

filters

to prevent

voltage leaking into the

microphone lead and at

the same time providing

further protection for the

microphones against

RF voltages. Consequently

such special

measures as

double screening of

the

leads

and RF -proof

fittings

are unnecessary

even

under the

most

difficult

operating conditions.

Sennheiser

condenser

microphones

for

use do

not incorporate

any audio

frequency

transformers

and

are thus also

insensitive

to magnetic

inter-

ference fields.

Owing

to the extremely

lightweight diaphragms

the

microphones are

also

highly insensitive to

acceleration,

handling

noise. In most cases

thus possible

to use

the condenser

microphones

without

any

spring shockmounts.

Sennheiser

MKH range

The

MKH abbreviation

designates all Sennheiser

radiofrequency condenser

microphones. The

standardised

designations

for powering using

48 have already

been outlined

above. In

addition

the suffix

letter U denotes

a "Cannon"

plug connector.

The suffix

-3 denotes

matt-black

finish by comparison

with

the

basic finish

satin

nickel. The complete

Summary

will

found

the

following

listing.

SENNHEISER

MKH RANGE

MKH 406

Cardioid condenser

microphone with (T) AB powering

(P)

phantom

powering

MKH 416

Supercardioid

/lobe

condenser

microphone

for (T) AB powering

(P) phantom

powering

MKH 816 Shotgun directional

microphone with

lobe

characteristic

for (T) AB powering

(P) phantom

powering

MKH

106

Omnidirectional

condenser

microphone for (T) AB powering

(P)

phantom

powering

MKH

124

Clip

-on microphone system

with omnidirectional

characteristic

MKH

125

Clip

-on microphone system

with

omnidirectional

characteristic

for AB

powering

(T)

MKH

126

Clip

-on

microphone system

with

omnidirectional

characteristic

for phantom

powering (P)

MKH

110

Low-

frequency

microphone

with

omnidirectional

characteristic

and expanded

frequency

range to

MKH

110

-1

Low-

frequency

microphone with

omnidirectional

characteristic

and expanded

frequency

range to 0.1

Summary and

Technical

Data

56-59

Pt.

No.

Model No.

Model

No. Model

No.

Model

No.

Model

1560

MKH 406 T

1564 MKH

416 T

1568 MKH

816

1593 MKH

106 T

MKH

124

1561

MKH

406

T-3

1565 MKH

416 T-3

1569

MKH 816

T-3

1650 MKH

106

T-3

1562 MKH

406 T

1566 MKH

416 T U

1570

MKH 816

1604 MKH

106

T U

MKH

125 T

1563 MKH

406 T

U-3

1567

MKH

416 T

U-3

1571 MKH

816 T U-3

1649 MKH

106

T U-3

MKH

125 T-3

1188

MKH

406 P 48 1186

MKH

416 P 48

1190 MKH

816 P

48 1285

MKH

106 P

MKH125TU

1512

MKH

406

48-3 1510

MKH 416 P

48-3

1514 MKH

816 P

48-3 1806

MKH

106 P

48-3

MKH

125 T

U-3

1189 MKH406P48U

1187 MKH416P48U

1191

MKH816P48U

1286

MKH106P48U

1513

MKH

406 P 48

U-3

1511

MKH

416 P 48

U-3

1515

MKH

816

P 48

U-3

1807 MKH

106 P 48

U-3

MKH

126 P

MKH

126 P 48-3

MKH126P48U

Explanation:

MKH

126 P

48-3

Model

number

without suffix

= nickel

finish with small

Tuchel

plug connector

U =

nickel

finish with Cannon

plug -3 =

matt black

with small

Tuchel connector

plug

0372

MKH

110

U -3 =

matt-black

with Cannon

plug connector

0373

MKH

110-1

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Sennheiser SER 1-3 User Manual Page 48

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