Metra Electronics DAT Combo Instrukcja Użytkownika Pobierz pdf (Strona 50)

Personal

Hi -Fi

A complete

tonearm,

preamp,

earphone

-amp

combo,

this

setup

is ideal

for

stereo

on

the private

side.

By

Art

Trauffer

Build this

novel amplifier

-in-

miniature

and you'll

no longer

have to

fire up a

high

-

powered stereo amplifier

just to drive

a pair

of

headphones.

This little

stereo -headphone

driver

will cost under

$3.00,

entail

less

than

an hour's

work, and yet

give

you

beau-

tiful,

clean,

wide

-range

headphone

reproduc-

tion.

Utilizing

the

Euphonics

Miniconic

semiconductor

stereo phono

cartridge,

the

TA -15

tonearm

and

the

PS -15 power

source,

this simple

setup

is perfect

for

personal

hi -fi.

The photo

below gives

some

idea of

how

\ALUMINUM

STRIPS

Aluminum

panels

attached

to

wooden

base

form

sides

of

unit and

also serve

as

bat-

tery

holder.

Jacks

need

not be

insulated.

54

easy

this little

amplifier

is to put

together,

and

the

schematic

diagram

reveals

how

few

parts are

involved. No

volume

controls

are

used

because headphone

volume

is

just

right

for persons

with normal

hearing,

and

the

stereo

balance is good.

Construction.

Note

that the

two alumi-

num

panels,

screw-

fastened

to the

wooden

base,

act

as

a battery

holder

for

the size

-D

flashlight

cell and

automatically

connect

the

cell

to the circuit.

Phono

-input

jacks

J

l

and

(Continued

on page

116)

.......

R1

2 2K

01

2N217

J1

b

J3

B1

1+

ll

sv

b

J2

R2

2.2K

02

2N217

PARTS

LIST

B1 -1.5

volts,

D -size

dry cell

J1, J2 -Phono

jacks

(single

-hole

mount)

.13- Stereo

headphone jack

(two-

circuit type)

01, 02- 2N217,

GE

-2,

or

5K3003

transistor or

equivalent

R1,

R2 -2200

ohms,

'/z

-watt

resistor

Misc. -Wood

stock, aluminum

stock

1.037

-in.

20- gauge),

wood screws,

lockwashers,

solder,

stereo

headphones

(low

impedance)

Estimated

cost:

$3.00

Construction

time: 1

hour

RADIO -TV

EXPERIMENTER

1 2 ... 45 46 47 48 49 50 51 52 53 54 55 ... 113 114

Komentarze do niniejszej Instrukcji

Brak uwag