Sennheiser SER 1-3 User Manual download pdf (Page 115)

Infrared Technology for the

Hard

of

Hearing

SI 406 S

SI 406 SX

SI 406 SY

HDI 406 S HDI 407

S HDI 408

S

For high quality monaural transmission.

Matched dynamic compression.

Ultra- simple operation.

High reproduction level.

Extremely lightweight receiver.

All

previous headphones for

transmitting

radio/TV

sound

for

the

hard

of

hearing have required a

connecting

lead,

which has repeatedly

proved

to

be the troublesome

link in

the chain.

This con-

necting lead

is

no

longer

required

when

using

Sennheiser

infrared transmission systems.

The

systems used

for

the

hard

of

hearing are of a

special design for the special

requirements in-

volved,

incorporating matched

dynamic compres-

sion, which

is

of

particular importance for hearing

deficiencies

with recruitment,

and the

reproduction

level has been raised to the degree

necessary

for

the

hard

of

hearing.

All Sennheiser equipment

for the hard of

hearing includes

the suffix code

letter "S

".

These versions

of our equipment

are

supplied to specialist hearing aid suppliers,

who

are able to demonstrate the

individual

devices and

also

have

additional

information

on other Senn-

heiser products

for persons with

a

hearing

dis-

ability.

The

SI

406

S

is

a

monaural infrared transmitter

with dynamic compression.

Otherwise

it is identical

to

the

standard SI

406 version.

With the SI

406

SX the universal

plug

connector

has been discarded, so that this

version

can,

for

example,

be connected permanently to a unit by a

qualified expert. Other

plug

connectors can

also

be matched to the

free lead

ends.

The

SI

406

SY

is used for TV sets which do

not

have

a

headphone

socket as standard.

This trans-

mitter

is

provided additionally

with

an angled

electret

microphone for mounting

on

the side on

the TV set, with the

microphone itself positioned

directly

in front

of

the loudspeaker aperture to

pick

up the

full

acoustic quality of the sound.

The

trans-

mission quality is

excellent

not withstanding 2 -fold

transformation through loudspeaker and micro-

phones. The transmitter can be mounted without

any

need to interfere with

the

interior

of the

TV

set.

The

HDI

406

S

is a monaural stethoscope

head-

phone for particularly loud

volume.

Otherwise

the

data are identical to those

of

the standard HDI 406

version (see page 74).

The HDI 407

S

is

a

receiver which

can be clipped

to the clothing

of

the

user or

worn

around the

neck with

a cord.

It is intended for

connecting up

with

Sennheiser

headphones

or other hearing

aids.

The HDI 408

S

is

electrically equivalent to the

HDI 407

S,

differing

only

in its mechanical features.

It can be connected as sole receiver directly with

the special headphones HD 414

S -2.

With hearing aid - wireless - one ear

With hearing aid -

wireless - both ears

With hearing aid -

wireless

- both ears

-

frequent

removal

.'

Without

hearing aid - wireless - both ears

MINIM

Without hearing aid -

wireless - both ears -

frequent

removal

Without hearing aid - wireless -

both ears -

particularly comfortable

wearing

®

Without hearing

aid

-

wireless - one ear

HDI 408

S

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