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AMPUFIER

==========

The

Barney

Oliver

Audio

Amplifier

TableofContents

Section

I.

II.

III.

TABLE

OF CONTENTS

DESCRIPTION A.

General

B.

Specifications

FRONT A. INPUT

B. MODE

C. D. VOLUME

E.

F. BASS

PANEL

FILTER

Phono

Switch

CONTROLS

Selector

Switch.

Switch

Control

Equalization

(FLAT,

. .

Switch

BOOST) . . . . . . .

INSTALLATION

A.

Phono

B.

UseofPhonograph

C.

Speaker

D.

E. Line Voltage,

115/230

F. G. Installing

Connections

Connections Placement

Frequency

Volt

Amplifiers

Amplifierinan

Pickups

. . . . . . . .

. . . . . . . . . .

and (European

Existing

H. AssemblyofWalnutorTeak

Rack

I.

J. Pictures

Mounting

and

Cabinet

Outline

. .

Drawing

(-6dB, RIAA, +6dB)

Other

Than

Shure

Line Fusing .

Units) .

Cabinet

Enclosure

V-15

Type

Page

1-1 1-2

2-1 2-1 2-1 2-1 2-2 2-2

.

II

3-1 3-2 3-2

3-2 3-3 3-3 3-3

3-3

3-4 3-4

IV.

v

VI.

VII.

LOUDSPEAKER

CIRCUIT

A. B.

C. D.

CIRCUIT

A.

B.

C.

Dl. D2.

E;

PARTS A. B. C. D. E.

DESCRIPTIONS Phono Filter Power Power

Pre-Amplifier

Board

Amplifier Supply

DIAGRAMS

Phono

Filter Power Power Primary Deck

Pre-Amplifier

and

Amplifier Supply

Circuits . . . . .

Wiring (See Sections VI, A,B,C,

LISTS Phono Filter

Power Power

Deck

Pre-Amplifier

Board

Amplifier Supply

Parts

PHASING

.

Controls

one

. . . . . .

. .

.

Channel

and

4-1

5-1 5-1 5-2 5-2

6-1 6-2 6-3

6-4

6-5

D.)

7-1

7-2

7-3

7-4

7-5

The

Barney Oliver

Audio

Amplifier

Description

A.

GENERAL

The quality two home, auditoriums. quency with decks,

enoughtorequire

flat

additiontothe

phono of

several magnetic amplifiers provide the

RIAA in preamplifier direct input Adding the

preamplifier circuit panel holes as required, wiring.

result routing hum been The class-B biased

distortion. back, ranging low

frequencies audio monic

Barney Oliver Amplifier is a high

all solid

channel

in studios,

range 8

signal sources

AM

preamplifiers designedtooperate

recording characteristic.

moving coil

from

this

connectors

Hum

of

careful

on

is well

minimized

output

to

and

range

and

state

stereo

and

It

is

intended

to

16

and

FM

power

phono

the

boards

microphone

low-level, high

feature

and

printed below

stages

reduce

locally

A large

from

further

inter-modulation

will

boards,

in

distortion

attention

thermal

by

optimum

of

standby

degeneratedtoreduce

amountofoverall negative feed-

over

to

over

audio sound

(phonograph

tunners)

the

circuit

reduces

amplifier designed

reproduction

in small

for

ohm

speaker

that

littleorno

amplifiers,

cartridges. These pre-

necessary

have

been

impedance

require

install

deck,

and

modify

are inaudible. As a

to

filtering

boards,

noise (which itself has

input

the

amplifiers are

power

100

dB

50

dBatthe

any

distortion.

DESCRIPTION

to

medium

use

with

systems

pickups,

are themselves

equalization.

the

unit

from

equalization Additional

designed

inputorfor

that

the

user

and

wire

drill

front

selector

andtolead

the

stage design).

operated

drain

crossover

loop

gainatdc

top

remaining har-

Since

SECTION

for

in

the

sized

full fre-

and

tape

In

includes

any

for

plug-

for

direct

sources.

build

printed

or

rear

switch

residual

and

are

and

of

the

I

/-l-circuits are no

long simply clipped at

its

proper cause onlyafraction typically the

amplifiers,

control

maintained rapidly

amplifier

beyond transients arising records end 20 the of,

damage from accidental short-circuits puts. sustained tective fuses. are

from

reducing switching transients. A balanced build-up and balancing transients in low

turn-on

of

fundamental.

Bridged-tee

board,

below

or

response is

kc

by

amplifiers against overload

strong

The

Momentary

either

test

Finally, considerable

decay

voltage regulated supplies

transient

direct

time

constant

and value immediately afterward.

the

large

of

showatotal

networksinthe

and

active filters in

enable

down

the

and

loudspeakers from being driven

their

linear excursions

breath

another

r-f signals.

power

shorts

current

probes

of

blasts

reduced

amplifiers are

may

In

addition,

will in general cause

of

power

function

the

amplifiers. A slow

from

coupled, overload produces

transients;

the

original waveform resumes

amount

a dB below

distortion

the

low-end responsetobe

to

20

Hz

audible range. This prevents

from

such

into

microphones.

at

18

pairofactive filterstoprotect

shorts

limited

will have

blow

oneormoreofthe

all

power

or

effort

supply

drops

minimizes

the

pre-amplifiers.

the

peaks are

of

feedback, signals

actual

over75dB below

8-circuitsofthe

the

and

to

by

sources

dB

per

by,orrectification

protected

fused so

was

voltages

further

overload

mixing and

fall

off

low

frequency

as

warped

The

octave above

against

at

their

no

effect, But

supply

turn-oninthe

outputs

that

shorts

no

damage.

devoted

and

careful

the

turn-on

reduces

very

high

out-

pro-

Be-

the

to

1-1

Description

SPECIFICATIONS

The

Barney Oliver Audio Amplifier

OUTPUT PER CHANNEL

SPEAKER Z

16

8 4

CONTINUOUS* AUDIO PEAK

::::::36

::::::50W

**

W

::::::90W

::::::160W

::::::80W

HARMONIC DISTORTION

<0.01

%,

2

mw

to

max. power, all freqs.

HUM

AND NOISE

100

db

Power Amplifier:

t

Phono

Preamp:

below

84dbbelow

one

max.

volt

INPUT VOLTAGE FOR FULL OUTPUT

Tuner, Tape,

Aux1,Aux

2:

~1.0

Phono:~5 mv rms

INPUT IMPEDANCE

Tuner, Tape, Phono:

Aux1,Aux2:100

Optimized

for

K n

SHURE V-15

Pickup.

CONTROLS

INPUT:

TUNER,

TAPE, PHONO, AUX

AUX 2.

output output

volt

Type

rms

II

1,

FREQUENCY RESPONSE

+1

+

II~I"

h!I~~T

~

o+l-J+-

~

I!

~

-51

f I I

II

-101+1

-'-+1-+

1/

-1~t--+-+++_-+--+----+-++-_I1__+-+_+_1_+_\h...._+___+_I_1_+____1

,OUT

.11++

1"'-N~-+----==t"'+-++----1I--+-+++-""'od-.=-+-+-I_+____1

1 i ! : I I

Ii:

i Frequency Response

+----+---+----+-++----1-+-+-+-Hf

1

I i I \ ! \

:

I'

i

: Iii

-10

10

~o

100

~oo

1000

FREQUENCY

I

'\

~~

~~!\

1\

..

m \

~

\Ir\~

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lrr

I

i I

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I

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~I

1001

CONTROLS (Cont'd.)

FILTER:

>

18

20

Controls active

dB/octave

kHz. Includes

h.f

with

comerat5,8,10

30

dB

notch

roll-off filter

or

at

10

kHz

in 5 and 8 kHz positions.

VOLUME: Dual precision

attenuator, range, 2 dB steps. Eliminates balance

BASS: Response: RIAA,

control.

FLAT,

BOOST

+ 6 dB, - 6 dB

need

60

dB

for

MODE:

STEREO -

DIR(ect),

MONO-DUAL,

REV(erse), L, R

L, R

*Both channels operating simultaneously

maximum

**Continuous high

than

8 n

output.

power

not

recommended. See instruction

operation

manual.

t

Hum

pickup

by

phono

cartridge

this figure to be exceeded.

1-2

may

at

less

cause

SIZE:

16.72"

10.93"

(425 (278

mm) mm)

wide, deep

WEIGHT

Approximately

20

pounds

POWER REQUIREMENTS

115

or

230

V.A.C. ± 10%, 50-60 Hz,

standby 16n(both

power,

channels).

135

5.0"

behind

W

at

net

full

(127

panel.

without

output

mm)

high,

case.

20

into

W

The

Barney

Oliver

Audio

Amplifier

Front

Panel Controls

Simplicity withaminimum mark

withacolored special or settings input

A.

five

purpose

technically

selector

INPUT Selector

This

inputs.

TUNER

TAPE

and

switch

naive

achieve

From

of

operation

of

controls.Itis a

dot

the

controlssothat

operator

good

and

volume

allows a

left

Accepts dBm) tuner.

Accepts dBm) or

to

from

single

choice

right

input

from

channel

SECTION

II

FRONTPANELCONTROLS

other

one

Switch

be

introduced.

Both ered

Monophonic "left"

Monophonic "right" speakers.

signal sources

(STEREO

has

been

achieved

good

idea

"normal"

the

need

results

control.

these

FM, AM,orFM/AM

an

settings

inexperienced

only

ch-eck

using

of

at

at equalized

tape

only

anyone

are:

line level (0

deck.

to of

these

the

of

stereo

DUAL

L

R

The

Land tapes over side) speakers.

C.

roll-offs positions

and

either

FILTER

This

control

to

are:

channels

to

both

channel

R

positions

allows various high

mixed

speakers.

reproduction

over

reproduction

channel

allow

to

side)orboth

From

left

and

both

speakers.

over

monophonic

be

reproduced

(MONO

frequency

to

right

deliv-

of

both

the

PHONO

AUX

1

AUX2

MODE Switch

B.

This

nels

of

the

in

various ways.

stereo

operation.

L

R

REV

DIR

control

input

Accepts stereo

Accepts

level

tape

allows

to

The

From

Left speaker.

Right

right

Stereo channel channel

Direct channeltocorresponding

-Normal

input

phonograph

inputs

audio

circuit

decksorother

the

left

be

delivered

center

positionisnormal

lefttoright

stereo

channel

stereo

speaker.

channels

to

right

to

left

presentation.

position.

fromamagnetic

pickup.

from

suchastuners,

sources.

and

to

the

onlytoleft

channel

reversed.

speaker,

speaker.

Each

any

right

speakers

modes

only

speaker

line-

chan-

for

are:

to

Left

right

stereo

5

8

10

20

D.

VOLUME

A

dual ment perceptible) the the the

of

attenuation feedback

nuisance

Introduces offat5 kHz, kHz. Useful

records

Introduces off kHz. Useful records

Introducesamaximally dB/octave ful

Normal maximally offat20

Control

precision

the

sound

steps over a

is precisely

assures

and

at

8 kHz

and

for

slightly noisy

attenuator

level

equal

hazard

a high

cutoffat10

position.

flat18dB/octave

kHz.

in 60

balanced

gaininboth

of

frequency

withanullat10

for

noisy

AM

reception.

frequency

with

a nullat10

for

good

AM

reception.

conditions.

Introduces

allows adjust-

2

dB

(or

dB range. Because

and

an

improperly

cut-

78

rpm

cut-

78

rpm

flat

18

kHz. Use-

cut-

scarcely

because

channels,

set

a

2-1

Front

Panel Controls

The

Barney Oliver

Audio

Amplifier

balance

control speakers are assumed. good

manufacture

of

each

other the

two

channelsofa good phono-cartridge. However,

the components the

"hot"

E.

Phono Equalization Switch (-6 dB, +6 dB)

Below

tive only in

are eliminated.

will ordinarily

over

the

perfectionist

and

introduce

side.)

the

INPUT

the

PHONO

Good

audio

quality

range. Likewise

may

want

appropriate

selector

control,

positionofthat a three-position slide switch allows sation mal) position, RIAA equalization. frequency response is the

6 dB.

Gramophone) ifications, while

for

recording defects.

this

right position,

Some

manufacturers

conscientiously

others

In switch provides In

the

left

position,

dropped

the

response is

by

(such as

adheretoRIAA

(names suppliedonrequest)

(Note:

Identical

speakers

be

within

to

test

loss

RIAA,

and

control,

some

compen-

the

center

the

standard the

6 dB, while in

enhanced

Deutsche

of

1 dB

for

his

into

effec-

(Nor-

high

by

spec-

enhance deficiencies

the

of

high

the

speakers are flat, correct better your

F.

controlisthe BOOST 6 BOOST provided speakers. fortunate woofers as LE-15A's

this

in

the

ears)

need

BASS Switch

Located

position,

dB/octave

position,

for

(Two

enough

with

practice.Ifyou

majority

below

two-position

from

the

real polesat80

or larger enclosures), compensate bottom levels,

the

of

the

FLAT

end

to

compensate

usual

the

playback

-6

dB

find

of

cases,

system.Ifyour

position the+6dB

your

attention.

(FLAT,

the

BOOST)

high

frequency

BASS switch.

the

switch

80

Hz

approximate

raises

down

the

to

20

compensation

usual low-end roll-off

polesat40-50

to

have

an

ALTEC

the

411-A's

BOOST

low-end roll-off

audio

range.

Hz).Ifyou

overdamped

Hz

and

in

position

down

For

very high

positionisrecommended.

for

will

position

speakers

FILTER

In

response

Hz.Inthe

of

good

pair

20

Hz (such

9 cu. ft.

will closely

to

sound

the

help

(or

the

at

is

are

of

or

the

2-2

The

Barney

Oliver

Audio

Amplifier

Installation

A.

PHONO CONNECTIONS

Special

the

PHONO

and

series ance faced the

high

precautions

input.

feedbackisusedtocontrol

by

the

end

roll-off ing characteristic, is

not

grounded

MUST

NOT

TOGETHER further are

information.)

used

for

inside

BE

GROUNDED

externally. each

must

Because a

cartridge

combinationofshunt and

requiredbythe

the

"LOW"

the

amplifier

(See

If

coaxialorshielded wires

channel,

the

SECTION

INSTALLATION

be

observed

the

thereby

RIAA

sideofeach

and

OR

CONNECTED

Section

two

V, A.

inner

for

imped-

produce

record-

input

THESE

for

shields

III

must

be

insulated

outer

shield

In

some

cartridges, channels is at

one

or THESE MOVED BY WITH A shield at end done, ground

GROUNDING

LARGE

shouldbeconnectedtothe

one

end

using

the

test

before

from

around

grounded

both

LOW terminals.

PRYING

NEEDLE

andtothe

binding

that

both

connecting

each

other

and

both

as

shown

the

LOW sideofoneorboth

to

the

case

in

byathin

IF

PRESENT,

STRAPS MUST BE RE-

THEM OUT AND

OR

PICK.

The

turntable

amplifier chassisatthe

post

provided.

After

channels are isolated

them

to

the

from

the

Figure

l.

strap

OFF

overall

frame

other

this is

from

amplifier.

NOTE:

Inner

shields end. Also together pickup).

Outer'

shield

inner

at

any

Cables

must

should

must

not

shields

point

not

be

must

(including

have

insulation

make

TO

GROUND

ON

CONNECTION

REAROfAMPLIfiER

grounded

not

be

connected

at

over shields.

contact

Figure 1. Phono Connections

at

or

with

either

inside

any

lead

connecting

inner

In

shields).

some necessary; chassis

should

(ground

preferably

TO

CHASSISOfTURNTABLE

OR

CHANGER

pickup

locations

in

terminal

such

be

connected

on

the

cases,

insulated.

to

amplifier (including

outer

turntable

to

rear)

withaseparate

shield

may

or

changer

amplifier chassis

not

be

wire,

3-1

Installation

The

phono

as

is convenient from

other

source installation should volume

B.

be

control

USE THAN

The are optimized Other

good quality pickups resistor change boards

may

are designated R1 as

cartridge

of

AC

and

a good cartridge,

audible evenatthe

and

OF PHONOGRAPH PICKUPS

SHURE

phonograph

for

the

on

be required.

shouldbelocatedasfar

any

transformers,

magnetic field. With

no

full setting

with

bass

boost.

V15

TYPE II

pre-amplifiers

Shure

each

shown

V15

of

The

near

TypeIIpickup.

can

be

the

phono

resistors in

the

as

used,

left

motors,

proper

AC

of

OTHER

shipped

pre-amp

question

side the pre-amp schematic in Section VI, A. determine pickup, up

mustbeknown.

then

Where Lois pickup internal resistance in ohms,

the

optimum

the

inductance

and

The

be calculatedbyusing

r\

L 6

\R

=_0_

1

x

10

-

.75 0

pickup

inductanceinHenries, Rois

value

for

R1

resistanceofthe

value

for

resistor R1

the

following

100

R -

20K

for

equation:

~

and

a given

R1 is in

ohms.

the

Once

R1 resistors

boards

shouldbechangedtothe

additional

value

on

information,

each

for

R1

of

the

see

SectionV,A.

has

two

been

phono

proper

calculated

pre-amJ

value.

hum

but

pick-

may

For

or

the

of

To

C.

venient distance pairs may speakers longer mended. cables speaker

the

a

rearofthe solderedtothe to

or the tape sleeve

D. SPEAKER

endsofthe listener

angle, i.e.,

to

as

then

perpendicular

speakers.

The

Barney

SPEAKER CONNECTIONS

The

amplifier

may

from

of

No.

18

wireorlargerorordinary

be

used

to

connect

if

the

distance is

distances, heavier

In

general

or

cords

should

Oliver

be

the

conductors

the

not

impedance.

Connection

two-terminal

avoid

internal

solder bridges.

wire

and

or

heat

after

The

loudspeakers

at

the

two

shown

in Figure 2.

be

heard

to

polarized

amplifier.

mating

short

lugs

from

shrinkable

soldering.

PLACEMENT

base

of

the

apex.

the

angle

speakers

up

bisector

the

amplifier

The

cordsorcables

plugs provided,

circuits

It

is

good

each

tubing

should

an

isosceles triangle

The

apex

between

should

Good

to

450on

of

Audio

located

Amplifier

at

any

con-

loudspeakers. Twisted

zip-cord

the

amplifiers

under

100

feet.

to

the

For

are recom-

d-c resistance

exceed

outputs

Jones

socketsatthe

5%

of

is via

the the

must

practice

other

be

the

from

inside

be

located

angle

the

about

sound

either

line

taking

wire

to

with

of

lines

150to quality

side

between

care

strands

insulate

electrical

the

plug

at

the

with

the

this tri-

of

sight

45

will

of

the the

be

0

,

LEFT

SPEAKER

~~~~

RIGHT

I

SPEAKER

I

Figure

2.

3-2

The

E.

Barney

LINE FUSING

Oliver

VOLTAGE,

Audio

Amplifier

FREQUENCY

Unless specifically tagged otherwise, amplifiers operate have single be 230-115V The

only

power

connected

step-down

proper

on

115V

transformer

for

230V

line fuse

ac line.

primaries

operation. transformer for

115V

(An

may

unitsis1.6

slow-blow.

Satisfactory

line voltages

or

230V)

50

Hzorgreater. A

is

recommended

is

not

ate

ground

phono,

F.

within 115/230V

230V

value.

grounded

mikeorother

115V/230V

Units

shipped

the

power

Units

shippedtoEurope

operation slow-blow fuses. Becauseofthe used,

amplifiers line cords. amplifieriscompatible and

it

is assumed

proper

will be

cord.

prominently

115/230 United will use equipped will

be

States

1.6 with

tagged

Amplifiers

ers

maybereconnected

voltage.

two

for

115V

halves

230V,

operation

within

The

±10%

line

groundingorthree

but

not

through

may

be

needed

low

AMPLIFIERS

to

Europe

United

States)

transformers.

and

willbeequipped

shippedtoEurope

The

line

connector

with

that

Units

connected

tagged.

V amplifiers

willbeconnected

amp

slow-blow fuses,

standard

to

indicate

with

115/230V

operation

of

the

transformer

the

two

halves

will

be

obtained

of

the

nominal

frequency

essential.Ifthe

the

power

to

level

cord,

get

ridofhum

inputs.

(European Units)

(and

in a few cases

are

equipped

willbeconnected

with

varietyofac plugs

will

on

the

European

the

user

can

for

230

shipped

for

115V

and

line cords. These

115/230

power

by

the

user

for

requires

connecting

primaryinparallel;

must

be

connected

series.

-NOTE-

When

reconnecting

must

be connected eous

flux

have

the

The

line fuse

the

line voltage (1.6

taken

in

produced

same

transformer

to

an

insure

"aiding

by

that sense"

both

polarity).

mustbechanged

amp

for

primaries, care

windings are

(instantan-

windings

when

115V;.8amp

230V).

AND

LINE

amplifiers

and

cannot

external

be

used.)

amp,

with

(115V

should

wire

socket

chassis

a separ-

with

0.8

amp

not

include

rearofthe

line

cords,

obtain

operation

within

operation,

will

units

capability. transform-

either

must

changing

be

on

for

the

be

line

the

in

for

G.

INSTALLING ING CABINET

If

the

isting

cabinet,

the

outline

Because supply that is

capacitors, are

the

not

very great

amplifier is

drawing

certain

overhang

AMPLIFIER

careful

attention

shown

components,

quite

at

the

andatthe

IN AN EXIST-

to

be

installedinan ex-

shouldbepaid

in

Sect~op

especially

large,itwill be seen

top

of

the

bottom

edgeisvirtulllly zero. This will require considerable care the

necessary recommended detail

before

mistakes. Referring

line drawing

overall

front heightis4.85", high. This will somewhat canbetipped

Front

mately

ontal

H. ASSEMBLY OF WALNUT OR

1,4", requiring less precision

dimension.

CLOSURE

If

the

included

as

outlined

of

assembled enclosure.)

The Two

Black vinyl-clad

hole

in

the

cabinet.Itis strongly

that

the

panel

less

laying

in

Section

and make

than

amplifier

out

this holetoprevent

to

the

III, J.,itwillbeseen

heightis5",

that

the

possible

4.85"

be

side view

that

the

side gussets 'are

the

use

high,ifthe

slightly asitis inserted.

panel overhangateach side is approxi-

in

walnut

with

below. (See

enclosure wood

or

teak

enclosure

your

amplifier,itmaybeassembled

kit

consistsofthe

side panels

aluminum

Section

(one

III, J.

right

top

and

retaining screw.

Four

10-32

for

attaching

Wood side panels have

finished.Itis

be

finish

sanded 400or600 please. which

One

can

be

an oil finish,

stores

and

finish materials

If

a high-gloss finish is desired,itwill be necessary ing is

referred

and

to

applying

flat-head Allen screws

side panelstoamplifier.

been

recommended

with

grit.

They

quick, simple

done

by

with

or

many

(one

apply

hardware

brand

fillertothe

finish.

to

his friendly

can

that

fine

sandpaper

then

and

most

anyone

without

stores sell Danish oil

is Watco).

wood

For

this process

paint

sanded

the

be

finished as

beautiful

stain. Most

storeorcabinet

shop.

Installa.tion

III, J.

the

power

front

panel

in

cutting

examined

costly

in

the

rear

panel

4.48"

of

a hole

amplifier

the

horiz-

TEAK

option

f~r

picture

following:

one

cover with

and

but

wood

pieces

such as

finish

anywhere

paint

before

stain-

the

to

in

outthat

EN-

was

left).

nuts

not

you

is

user

3-3

Installation

The

Barney

Oliver

Audio

Amplifier

ASSEMBLY INSTRUCTIONS

Attach

with

the

Allen screws

that

the

side panels are

to

clear

the wood front is a be amplifier

just slot

panel

panel. Near

slot

extending

attachedsothat

and

The

aluminum

mentioned,

at

the

The

rear

topofthe

the

front

to

face

top

rearofthe

edge

back

wood

side panelstothe

and

nuts.Itwill

notched

panel overhang

extend

one

the

slightly

edge

full length.

these

slots areatthe

inboard.

top

cover slides

with

the

front

of

the

panel

andissecured

andtoallow

forward

of

each

The

edge fitting

panel.

top

cover lies

across

wood

panel

into

with

amplifier

be

noted

one

end

screw to permit interference parts.

through

adjust

the

positionsofthe

the

top

from

cover

side gussets

the

of

the

panel

I. RACK

MOUNTING

should

topofthe

the

slots

into

on

the

a

If

your

type

cabinet,itcan

the

standard

instrument.

J.

PICTURES

amplifier

rack

Instructions

AND

a single (See following page.)

top

cover.Itmaybenecessary

wood

side panels

to

slide

into

place

or

other

CABINET

was

be

rack

mount

are

OUTLINE

furnished

mounted

kit

shipped

included

DRAWING

in

with

without

amplifier

an

by

use

with

the

to

HP

of the kit.

3-4

.38in'it---

(10mm)

I (278mm) I

lo.93in.~

i"

I

: I (I27mm)

I c::::J 0 @ I I

~---------+J------<.

~:~;'~::i-----l

J

~~~~

Iii

i 5.00in.

r

_,12.11in.

t

(308mml--i

I

4.48in. 4.85in. (114mm)

I

r

(123mm)

[lI(W~;:;:r

16.72

~

in.

(425mm)

NOTE:

CASEISAN

EXTRA·PRICE

OPTION

The

Barney

Oliver

Audio

Amplifier

Loudspeaker Phasing

Proper

loudspeakers

insert a reversing switch

speaker as

and

the

MODE switch

exactly

three baffles. position dead

aheadofyou. illusion disappears independently. the

above speakers is easy

stereo

be

shown

signal sources

midway

feet

in

front

Try

reversing

the

sound

Unless

test

the

illusion is very striking

to

perform.

reproduction

properly

in Figure 3.

and

to

"DUAL".

between

of

the

should

In

the

and

the

is

difficult,'

Reconnect

SECTION

LOUDSPEAKER

requires

phased.

in

bringupthe

the

switch. In

appeartooriginate

improper

both

speakers are

To

the

Turn

Station

speakers

plane

sources are

but

with

the

check

leads

on

the

volume.

and

of

their the

position

and speaker

that

yourself

matched,

identical

this,

to

power

about

front

proper

from

heard

the

one

Set

this

test

pre-

IV

PHASING

serving be normal

than STEREO-REVERSE shifts program materialisdefective.Ifthe stays less efficient. identical,

the be

speakers

the

proper

done

once.

STEREO-DIRECT position.

If,

on

the

other,

to

the

opposite

with

the

doc

resistance

the

same within 5%.)

for

the

polarity. This

Return

average,

throw

same speaker,

If

weak

two

the

one

the

position.Ifthe

speaker

the

speakers are supposedly

one

of

the

channels

MODE

channel seems

MODE

the

signal source

the

other

maybedefective. (Check

speakers. These should

The

use

is

not

test

need

only

switchtothe

louder

switch

loud

channel

speaker is

of

different

to

recommended.

the

or

AMPLIFIER

Figure

Note:

dlmust

equal

d

2

3.

4-1

The

Barney

Oliver

Audio

Amplifier

Circuit Description

A.

PHONO-PRE-AMPLIFIER

The

phono

tion

of

series

terminals

of

the self high the if

R is require

This leads matic. As supplied, R1 is Shure V-15 variation back

of

the (normally above recommended

both

connect chassis.

input remainder

amplifier B stage at

line level (0

to

proper

inductance

frequency

pickup

The

A

inductance

the

that

to

TypeIIcartridge.Toprovide

of

is halved

series

pickup

the

ground.

inner

the

balanced

to

avoid

of

except

can

pre-amplifier uses a combina-

and

shunt

provide a resistive

valuetoproduce,

of

the

pickup,

roll-off above

and

input

shields

record

resistance

L

o

R + R

the

high

or

feedbackisappliedtothe windings which places

outer

To

that

drift

the

for

supplya600

dBm)

=

75x10-

o

value

of

end

response,

doubled.

shields

avoid

differential

amplifierissimilartothe

hum

an

outer

be

used. This shield

player

and

power

without

CIRCUIT

feedback

Rothe

to

R1 given in

appropriate

of

and

shield

frame

stageisusedatthe

RF

level.

n line

appreciable

to

the

input

together

the

2120

coaxial lines)

rectification.

impedance

required

Hz.

resistance,

the

pre-amp we

6

seconds

the

shunt

these

RF

pickupitis

insulated

to

the

The

output

or

headphones

with

If

the

amplifier

distortion.

low

SECTION

DESCRIPTIONS

10

K n ) cable capacitance has

input

RIAA

L

sche-

for

±6 dB

feed-

ends

10

from

should

power

Class

the

o and

the

end

The

is

high depending

you,

CR5, avoid function,

going

B.

cutoff

against large useless lable high-end quencies

n

consisting ample: (example: Q1 very high pedance

coupledtothe high pass filters below The

outputofthese

V

Because

end

Many

such

etc., are

emitter

into

FILTER

The

Q3

The

16

the

response

on

the

of

the

as Q3

theretoavoid

base

but

invincible fatigue prevents

all

the

BOARD

filter

below

and

16

cutoff

with

noisyordistorted

board

contains

of

two

and

Q5)

and

input

low

two

input

Hz (example: C1,

input

cable used.

or

board

impedance,

distortion.

that

impedanceislow

for

lengthsupto

components

CR8

breakdown.

gory details.

provides a

Hz

to

cone

to

cascaded

with

Q7). This

unity

selector switch

drop

feed

no

effect 10or20

that

or

such as CR1, CR2, tum

on

Everything has a

sharp

protect

exursions,

suppress

four

unity

emitter

constant

combination

very

gain amplifiers are

rapidly in transmission

R1,

the

mode

the

and

the

program

gain amplifiers

followers (ex-

current

low

through

C3,

selector

on

may

transients

me

low-end

speakers

a control-

high fre-

material.

supplies

provides

output

R7,

Q3, Q5).

switch.

(about

the

feet

puzzle

or

from

im-

active

The

teristic

+

provided

R10. gain cutoff

areaofthe

properly

the

coupling

the

hum,

below

R4

+ R5 +

This

andafourth

at

Great

routing

loops

hum

it's

low

end

bass 500 R6

and

by

C2

and

combination

about

to

from

16

care was

input

shown.

the

below

coupling

circuit

the

power

audibility.

boostofthe

Hzisprovided

R28.

The

low

C3

together

provides

order

This minimizes

maximally

to

20

used

zeroinall

conductors

transformer

directlytothe

Hz.

to

unity

make

(If

RIAA

by

with

the

directions

andbyproviding

the

you

C12

and

end

cutoff

C4, C5

d-c

external

flat

low-end

projected

magnetic

and

reduces

notice

cartridge.)

charac-

R3

and

by

any

The

output

for

drive

is

are

coupledtothe

low-pass filters. These are

of

the works shunt

base thereby and transients switched.

the

poles being provided

and

the

branchatthe

Potentiometers

currents

enable

21

to

be

when

unity

dual

mode

remaining poles (and zeros)

of

the

set

equal

the

gain amplifiers provide

precision volume

selector switch via active

three

by

output.

are provided

input

emitter

voltagesatterminals 5, 4,

to

zero. This eliminates

mode

and

control

pole filters,

the

input

to

supply

followers

filter switches are

and

two

RC net-

by

the

and

20

5-1

Circuit Description

C.

POWER

The a cascaded prising transistors Qll

as provided from

current

R22,

CR9, and CR2* to

avoid large voltage Inductance the effects frequencies while

with

ance and CR13 provide gether

with

circuit

emitter

by tioninthe

The

Ql

and Q2, whose

Q4.

The

and

the

AMPLIFIER

output

stage

of

complementary

Q12*

their

drivers. Operating

by

resistors R5*

and

source Q8 flowing

CR8

and

CR6.

shunt

R5*

and

drops Ll*protects of

capacitive cable loadsatvery high

R8*

eliminates

this capacity. Diodes

output

fuses F* these provide

protection.

The

output

follower Q9, which has

collector.

input

stage consistsofa differential pair,

emitter

input

signal is appliedtothe

feedback

to

the

emitter

Q13*,

and

R6*

The R6*athigh signal levels

the

current

currents

base collector swingofQlislimited to

protect

the

emitter-base

junctionsofthe

stage comprising Q5 and Q7.

The

loop

gainatd-c extremely high for

the

loop

(>

gainathigh frequencies is

collector capacitance

at

falls dB second pole

falls C6 off

cutoff

crossover is

R12 increases reduces poles in the low before C7 a poleat16 gain. Thus Hz, most

"Located

Schematic. Section VI.

6 dB/octavetoreach a valueofabout

at

10

kHz.

Inductors

at16kHz above which

at

12

dB/octave

beginstoshunt

in

the

amplifier

rate

to

6 dB/octave

at

about

The

bridged-T comprising C3, C4,

the

external gain

the

external gain are slightly

end

response rises slightlyatthe

dropping

and C8

to

compensate

the

off.

together

Hz

and

gain risesat6

loudspeakers.

on chassis.

See

100

R16

loop

a zeroat80

rfghthand

C.

dB).

of

Q7.

to

about

producing

and

reducing

1 MHz.

gain below

In

with

for

the

and

Ll

to

the

R16

portionofPower

power

amplifier is follower comwith

QlO

point

stability is

andbycurrents

power

through

diodes

CR

CRI

in these resistors.

output

CRlO,

stages

any

series reson-

CRll,

from

CR12

limitation. To-

output

short

stages are driven

current

limita-

are supplied

baseofQl

of

Q2.

The

output

by

CR2

and

second

low

frequencies is

The

Thus

and

once

primary

the

L2

the

200

a high

the

cutoff

the

base-

loop

introduce

loop

kHz,

where

end

loop

more. Gain

Rll,

16

Hz

unity

at

d-c.

complex

low

bass-boost

and

Hz in dB/octave low

end

R17

the

roll-off

position produce

external

below

Amplifier

and

7,

by

CR3

gain

60

gain

cut-

gain

and and

The

so

end

80

of

The

Barney

Transistor tiometers the

currents currents input mum) with

of

terminals

and

the zero volts hold

*

for volume

D.

control

POWER SUPPLY

All

supply

are available in

(±

40V)

and

CR4

Filtering is

has a

substantial load,

but

that

this

Q3 supplies

R4

and

through

Ql

and

shorted

R4

with

volume

outofthe

any

impedance

setting).

voltages

both

is rectified

in a

double

by

capacitors C3

amountofripple, especially

the

power

produces

R5,

Q2. By adjusting

the

control

negligible

Oliver

which

R2

and

(volume

input

at

amplifier,

the

(50V,

polarities.

by

diodes

full wave

Audio

Amplifier

currenttotwo

are

adjustedsothat

R3

supply

R5

control

terminals

maximum)

this

condition

amplifier faces

40V,

20V

and

The

main

CRl,

CR2,

configuration.

and

C4. This

poten-

the

with

at

open

to

supply

base

the

mini-

give

will

(any

lOY)

CR3,

under

amplifier by-passing is such

huminthe

amplifier

(or

output.

-WARNING-

The

terminals not ground

current

or

and

protected.

to

each

leads

other.

of

C3

Do

(You'll

not

and

short

ruin

C4 are

to

your

screwdriver.)

The

+50V supplies are really

floated

a

will sistors provide

show

Ql

on

the

about

and

protective

+40V supplies respectively.

the

same ripple as

Q2

with

their

current

limits

10V

the

latter.

associated

on

supplies

They

Tran-

circuitry

the

+50V

supplies.

Zener diodes reference voltages from

the

cascaded Q4-Q6. during two and supply transistor

The

tum

on

stage active filters comprising

R15,

C7

and

RIO, C6,

Q4 compensates while

Q6 for

that

CR17

CR18

and

Q8. Resistors

the

initial charging

these

currents

and

R18, R20,

CR13

for

the±20V

emitter

rateofrise

and

turn

and

transistor

for

the

-20Vsupply.

for

junction

compensates

Rll

do

not

CR18.

and

CR14

establish

supplies

followers

and

fallofthese

Q3-Q5,

offisdetermined

R9,

Q3

for

R14

and

R16,

Diode

drops

for

currents

flow

junction

and

through

in

R12

in C5

obtained

and

supplies

by

C5,

R13

the+20V

C8,

CR17

Q5

and

drops

compensate

and

C6 so

R17,

R19,

the

and

Q7,

in

5-2

The

Barney

Oliver

Audio

Amplifier

Circuit Description

Resistors

R20

are dividers

The

±

followers

CR15 tection emitters from

shorts

10V

Q7

and

of

R17

to

outputs

and

Q8.

and

CR16

transistors

Q7

and

between

and

R19

develop

are

provide

Q9

Q8

the

as well as

the±10V

taken

short

and

QI0

from

circuit protect

R18

and

reference.

emitter

pro-

against reverse voltage

10

and

20

volt

supplies.

the

The

10

and

20

essentially

The

ripple

free.

maximum

various supplies are:

Supply ±10V ±20V ±40V ±50V

volt

supplies are regulated

steady

Max

current

Current

18

ma

70ma

3 amps

0.5

amps

and

ratingsofthe

5-3

SECTION

VI

CIRCUIT

DIAGRAMS

r-------------------·

I

I I

R7 lOOK

03

3-020

+

C6

15fL

SHURE

Rl=909K

V15

CRl

1-040

CR2

1-040

ETC.

La

I

01

4-221

CR3

1-040

RS lOOK

4-221

CR4

1-040

02

I

3

I

4

R2

20K

C1

30pF

Q4

4-071

R9

46.4K

54

-6db

I

R4

511.n.

R5

511.n.

R6

lOon

LOOP

I

R3

1100n

300J-LF

NP

C2

C3

300~~

I I

I

16

I

-=

L .

- -

---

01

4-221

R6

10.0.

CR3

1-040

Q4

4-071

--

-

--

- -

-------

03

3-020

~~-"'--"'-----""----~~-_.-IVv'\----"""1,,",""----------o+20V

R7 lOOK

1-040

CR1

CR2

1-040

RS lOOK

02

4-221

+

Rll

5.11K

05

3-020

-=

R15

26.1K

-

07

3-020

----

-

09

4-071

--

RI9

215.n.

- - -

T

Cll

1000pF

-----

R23 511,(1

011

4-071

-----.,

I

11

I

I I

I

I I

I

17

OUTPUTTOSELECTOR

I SWITCH

I

1

18

I

1

7

-20V

I

I I

R9

46.4K

....

----+-

CR4

1-040

LOOP

RI3 10K

R12

5.llK

+

....

--+-----

R14 120K

....

R16

56.2K

06

4-071

-----

CR7 1-040

R17

200.0.

CR6

1-040

CR8

1-040

08

4-071

R1S 10K

....

---'VV'V---

TIOOO

R20

215.0.

-=

R22 10K

C10

pF

R25

51.1.fl.

R26

51.1.fl.

010

3-020

R24

511.fl.

....

----+-----OO

Cl2

.15fLF

R27

51.1.fl.

R29

5.11

R2S

21.5K

K

RIO

20.0.

C3

300~~

LOOP

-=

_____________________________________________

*

x

R1

=...!:..2.

106-IOORo-20K

.75

LoINH,RoIN

5mV

PRODUCES 1 VOLT OUTAT1KHz

ALL

RESISTORS

3ZIA

.fl.

l/SW

Phono

tl

I

-=

I

I I

I

I I

J

METAL FILM UNLESS OTHERWISE NOTED.

Preamplifier

INPUT

PHONO

TAPE~AUX1

TU

NER-f

t L

51

~

~51A

TUNER

~

MONITOR

OUTPUT

~

~516

PHONO

1-

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

I

I I

2

AUX

I I

I

I lOOK I

I

+/OV

R3

I I I I

I

Cl

2

.22

I

I I

R15 10K

I I

I

Rl

I

23.7K

I

I I

1

22

-=

2*1

3

C5

+ 10fLF

+20V~C7

+/OV~I-~P-'

-/OV~+

-20V~+

*1

1 C8

~IOfLF

I C6

~IOfLF

I

+ 10fLF

I

+/OV~"""",,'V,,.-'V-IOV

R4

lOOK

I

I g F

1 .

-IOV

+20V

-IOV

RUMBLE FILTER

BUFFER AMP

+20V

+IOV

-20V

AND

+/OV

--~

I

[

MODE

STERE0

1

51'

L 52

iMONO]

~~,

II

I

1-..¢:5~+-+.J-:-~t-;:;-v:;:.:,JlVV\r~=:Y-

FILTER

i--

I

53

I

RI3

3.16K

L..---.-v-"""'jr

I

1

21

1

536

I

CII

I

.001:

10

16

14

121

I

1 1 .

I

CI7

018

.03:

CI9.C

~

CI~

1

r

r~l~

L..-----r-.....,r

o

o 0

TUNER

~

MONITOR

OUTPUT

RI6

10K

I

1

I I I

1

I

R2

1

23.7K

I

L ---I:

I

-IOV

R14

1.96K

-20V

I

1

I

1

I

I I

I

I _

L _

I _

I

L-

53EI

I

o~~

1

.0012

1

1 r

151C18

I C20

13 f

J

CI2

Cl'

.O~

.01

MODE

STERE01iMONO]

FILTER

[

51'

:-

.......

«,

52

+6-O-+-....:vVv--

o

o 0

S3

r - - - - -

1 I

I I

I

--

+IOV

- -

--

- - - - - -

+

IOV

+20V

I 1

1 R23 I

1

1 lOOK I

I

RI5

1

4.7M

3R!~K

......

--'\I\I'v-+-~---+-V-./'v-f'--+1

S3A

L-------.:..:<>--~I_-

211

S3BI

I Cll

CI3

10

lO~r"'

1 .00125fl-F

I

.018fl-F

1

16

1

14

CI7.033fl-F

1

12

C19

t---+---JI

CI5

.01fl-F

....

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

RI9

I~~.n.-IOV

t--'

-20V

-IOV

--1

1.96K I

C25

.0047fl-FI

rl-O--.....J

Ll

d~~

...

31.6mHl·uu

I

I *

I

ICI

.0047

I fl-F

1 1

I

9

1

5

4

S3C

RIA

TO

POWER AMP

10K

STEPPED

ATTENUATOR

*

RI4

4

___________________

______________________________________

3.16K

S3D

L..

20

17

15'C18.033fl-F

131

~(_-.,~-

...1

ACTIVE FILTER

+/OV +/OV

R18

100.n.

R20

-IOV

-20V

.---",IOOK

RI6

4.7M

I

CI6

I

.018fl-F

1

C20

.01fl-F

....

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

+20V

R24

1.96K

-IOV

.... 31.6mH I

Notes:

RIB

2N3906, 2N3904,

TO

10K

ATTENUATOR

22;

lc2

.0047fl-F

I

C26

.0047fl-F

1

*

pt---<?--

P

L2

_ 1

- 1

This Boord Utilizes

the Larger Connector are Lobled 1 thru

the Smaller Connector are Shown as1*thru All Resistors

C27*

10

'6*

.06~~~,d

I

-.J

Two

1/8

W Metal Film Unless Otherwise Noted.

and

C28*

SelectedToCenter10KHz Notch at 10KHz ±100Hz

S3F

......

PNP NPN-

Separate Connectors. Terminals

POWER

AMP

STEPPED

1853

-0036

1854-0215

Terminals

10*.

on

1ZI

B Filter

and

Controls

,----------------------------------

CR1

1-040

Amplifier

from

Daven

Input

Attenuator I

2

-=

~

Adjust for 0 V Output with Volume

'tF""~

R1

51.1.0.

I

1

I

at

R2

1.5M

1/4w

R4 50K

R6 10K

R7

10K

RIO 10K

2N5401

r-

03

.....

-<50K

C3

T100f-LF

-=

NP

R5

R12

200.(1

+

RI3

5.11

Adjust for OV at Output with Volume at Zero

R15

34.8K

C5

K

50f-LF

C6

120pF

R16

5.l1K

CR2 CR3 2N5401 2N5401

1-040

05

C8

.027f-LF

R17

20K

R19

5.11K

07

04

2N5551

Current

Source

+

C2 50f-LF

5.1

"I

10--

---

-

----

---------t-

.

NOTES: \

*Select

for

Speaker Protection

All Resistors 1I8W Metal Film

4 - Digit NumberbyDiodesisDerived from Part

2.0A

3AG Maximum LocatedonBack

Unless

Otherwise Noted. , J

Number:

CR1

=190

K

--

Pl,(el.)/

J

~

--16

f~-

40=1-040

06

2N5551

/

•

--..1--------

_____

R27

..

RI9

5.IIK

.....

..-

R23

909.n.

100

....

....I'I'."""----¢13

I

+50V

These PartsonChassis

05

CR3

2N5401 2N5401

with

C7

.4

p.F

R17 20K

06

2N5551

07

CR4

1-040

Cl0

'Jl000pF

R22

75.0.

CR8

CR6

08

2N5551

R26 10K

lDo---Cl

J5

R2

1.96K

I

R7

.05n.

R8

51.1

J6

L1

n.

+40V

Audio

Out

OV

o

-40V

J7,

PI

I I I

:.....---~~-

....

--

....

R21 +

5.11K

---4I

....

--

...

l:

50p.F

R28

---4I~--'\1/1\4I'W---'9-50V

100

!

I

!

5

I

-------------------------~

~/::--~-----------------------_~

~

S5

1ZIC

BOOST

FLAT

Power

One

R9

lOOn.

1/2W

Phone

Jack

J8

Amplifier

Channel

T1

po-----------

I

CR5

750MA

Rl

10.11

-

-_.

01

2N4036

3~

CR9

CRll

+

C1

350}.l-F

Notes:

Power Transformer Primary Circuit Shown for 115V

Models Only. For

:llI

02.

See

4 Digit Number By Diodes and Transistors is

Derived from Part

All Resistors

1/8

115/230V

Number:

W Metal Film Unless Otherwise Noted.

Models,

01::

1853-0045=3-045

+

C2

350}.l-F

I

CRIO CR12 26.

I I

I

R2

10.0.

I

I 2N2405

l-

_.

- - - - - - - - - -

02

4-352-

R·

,.....----

I

I I

I

-----

CR5

750MA

CR3

3A

Rl

10.f1

- - - - - - -

01

2N4036

CR9

CRll

+

Cl

350fl-F

+

C3

15Kfl-F

--

)3;:.-..:0:::4.::5

R3

26.1K

+40V

- - -

562.f1

R9

23.7K

+

C5

100fl-F

Rl1

42.2K

R5

R7

R13

22K

--

RI5

2K

CR13

21.5V

----

4-071

+

-

03

C7

100fl-F

CR17

CR15

R17

lK

9V

- -

Tl000pF

R19 lK

C9 1000pF

--

- - - -

-----,

I

--<j'+50V

05

2N2405

").,,4------

Cll

4-352

R21 560

07

2N2405

b"'--..:.4...:-3;.:5~2

09

2N4036

3-045

....

--t_--Q+

R23

10K

.....

----<;

R25 10K

+20V

10 V

5\-.+--4--------.---,

+

....

CR12

-

C4 15Kfl-F

--u

02

4-352---

CR4

\-----4

....

--I4---+---

+ C2

_

350fl-F

I

CRIO

I

R2

1O.n.

I

I 2N2405

L-_.

---------

ClO

1000pF

R20 lK

R24 10K

010

2N2405

4-352

.--L~--

08

2N4036

3-045

....

---+---o-10V

R26 10K

..,.1~-----""---o

06

2N4036

3-045

-40V

26.1K

R4

CRIB

R12

42.2K

+

C6

100fl-F

R14 22K

RIO

23.7K

R8

562.f1

R6

562.f1

CR14

21.5V

R16

2K

RIB

lK

+

CB 100fl-F

-

'J----------------------------_~

-

------

-----

.J

-20V

-50V

I

1lI

01

Power

Supply

230

±IO%V

50-400'V

56

r---l

3 2

I

FI J4

O.SA S.B.

I I

RIO

47K

I

Jl

J2

I

J3

I

4

L

-....,

I

NE2

I

L.

___

_.J

5

±

lO%V

115

50-400'V

115V/230V

Jl

CONNECTED

56

r--i

3 2

J2

L

___

NE2

FOR

I

I I I I

I

L

230V

FI J4

1.6A S.B.

RIO

47K

4

-...,

_..J

5

OPERATION

J3

I

:ill

115V

02

1230V

CONNECTED

FOR

115V OPERATION

Primary Circuits

The

Barney Oliver

Audio

Amplifier

Parts List

PHONO PREAMPLIFIER

A.

Reference C1

C2,C3,C4,C5 C6,C7,C8,C9 C10, C12 CR1, CR5, CR6,

Q1, Q2 Q3 Q4 Q5

Q6 Q7 Q8,Q9 Q10 Qll

R1*

R2 R3 R4,R5 R6 R7,R8 R9 R10 Rll, R13 R14 R15 R16 R17 R18 R19, R22 R23,

R25, R26, R28 R29,

Cll

CR2,

R12

R20,

R24

R30

Designator

CR3,

CR4,

CR7,

CR8

R21

R27

SECTION

PARTS

30pF

mica

300

~F

np

3V 15~F20V 1,000pF

.15

~

silicon transistor

transistor transistor transistor transistor transistor transistor transistor

transistor Value is

phono V-15 Section III, D. 20K 1l00n 5lln 10n lOOK

46.4K 20n

5.llK 10K 120K

26.1K

56.2K 200n 10K 215n 10K 5lln 5l.1n

2l.5K

5.llK

tantalum

ceramic

F 10%

diode

npn pnp npn pnp npn pnp npn pnp npn

dependent

pickup

Type

II. Otherwise calculate R1

1/8

W m.f.

LISTS

Description

mylar

X2N4044 (special) X2N3904 (special) X2N3904 (special) X2N3904 (special) X2N3904

upon

used. R1 =

VII

characteristicsofthe

909K

for

the

Shure

per

Stock

Number

0160-2199 30D1614 0180-1746 0150-0050 0160-0303

1901-0040 1854-0221

1853-0020 1854-0071 1853-0020 1854-0071 1853-0020 1854-0071 1853-0020 1854-0071

0757-0195*

0757-0449 0757-0424 0757-0416 0757-0346 0757-0465 0698-3162 0757-0458 0757-0438 0757-0442 0757-0467 0698-3159 0757-0459 0757-0407 0757-0442 0698-3441 0757-0442 0757-0814 0757-0394 0757-0199 0757-0438

7-1

Parts List

B

FILTER

BOARD

Reference Designation

Description

The

Barney

Oliver

Audio

Stock

Amplifier

Number

C1,C2,C3,C4 C5,C6,C7,C8 C9,C10 Cll,

C12 C13,C14 C15, C16 C17,C18 C19,C20 C21,C22 C23,C24 C25,C26 C27,C28

L1,L2

Q1, Q2, Q3, Q4 Q5, Q6, Q7, Q8 Q9

Q10,

Qll,

Q12

.221-'

F

10

1.1-

F

20V

100pF

mica

.00391.1-

.00125

.0181.1.0331.1.011.1-

1.1-

F F

F

.001251.1.681.1-

F

.0047

F

.00821.1-

Inductor,

transistor

mylar

electrolytic

F

mylar

F

mylar mylar mylar

mylar

F

mylar

F

mylar

31.6

pnp

npn

(See

mR

2N3906

2N3904

Schematic

VI,B.)

0170-0086 0180-0374 0160-2204

0160-01~

0160-0297 0160-0302 0160-0163 0160-0161 0160-0297 0170-0039 0160-0157 0160-0160

special

1853-0036

1854-0215

Q13,

Ql4,

R1,

R2 R3,R4 R5,R6 R7,R8 R9,

R10 Rll,

R12 R13,R14 R15,

R16 R17,

R18 R19,

R20 R21,

R22 R23,

R24 R25,

R26

Q15, Q16

transistor

23.7K lOOK

pot

4.7

meg lOOK lOOn

carbon

82.5K

1.96K

4.7 meg lOOn

carbon

lOOK

pot

82.5K

1.96K

4.64K

pnp

carbon

2N3906

1853-0036

0698-3158 2100-2516 0684-4751 0757-0465 0684-1011 0757-0463 0698-0083 0684-4751 0684-1011 2100-2516 0757-0463 0698-0083 0698-3155

7-2

The

Barney Oliver

Audio

Amplifier

Parts List

C POWER

AMPLIFIER

Reference Designation C1

C2

C3

C4 C5 C6

C7 C8 C9 C10 Cll,

C12, C13

CR1, CR2, CR3, CR4,

CR10,

CR13

CR7,CR8,

CRll,

CR5, CR6, CR9, CR12,

Description

.01~F ceramic

~

F 50V electrolytic

50

6V

50V

mica

F

mica

ceramic

50V

diode

np

electrolytic

100JJ F

JJFtantalum

22

~

F

50

120pF

.47~

F

.027~

36pF 1,000pF 50~F

silicon

Stock

Number

0150-0093 0180-0141 30D603 0180-0228 0180-0141 0160-2205 0170-0064 0170-0066 0160-2308 0150-0050 0180-0141

1901-0040

L1,L2

Q1,

Q2 Q3 Q4 Q5 Q6 Q7 Q8,Q9 Q10

R1 R2,R3 R4,R5 R6,R7 R8 R9 R10

220

JJHinductor

transistor transistor transistor

npn pnp

npn transitorpnp transistor transistor transistor transistor

51.1n

1.5

50K

10K

3.16K

5.llK

10K

npn

pnp

npn

pnp

1/8

meg

1/4wcarbon pot 1/8

w m.f.

1/8 1/8

1/8

w m.f.

w

w w m.f.

2N5551 2N5401 2N5551

2N5401

2N5551 2N5401 2N5551 2N4036

9140-0129

1854-0474 1853-0264 1854-0474

1853-0264

1854-0474

1853-0264

1854-0474 1853-0045

0757-0394

0614-1551

2100-2517 0757-0442 0757-0297 0757-0438

0757-0442 Rll, R13, R15

R12 R14

200n1/8

5.llK

34.8K

1/8

w m.f.

w m.f. w m.f.

0757-0407

0757-0438

0757-0123

7-3

Parts List

C.

POWER

AMPLIFIER

Reference Designation

(Continued)

Description

The

Barney

Oliver

Audio

Stock

Amplifier

Number

R16 R17 R18 R19 R20 R21 R22

R23 R24 R25 R26 R27,

R28

POWER SUPPLY

D.

Reference Designation C1,C2

C3,C4

C5,C6.C7,C8

C9, C10,

Cll,

C12

5.llK 20K 10K

5.llK 20K

5.llK

75n1/8 909n

1.96K lOOn 10K loon

350,u F 15000,uF50V

100,u F 1000pF

1/8 1/8 1/8

1/8

1/4

w m.f. w m.f. w m.f.

w m.f. w m.f.

w m.f.

carbon

Description

15V

electrolytic

15V

electrolytic

ceramic CR1, CR2, CR3, CR4 diode, rectifier 3 CR5, CR6, CR7, CR9,

CR10,

CRll,

CR12 CR13, CR15, CR17,

CR14 CR16 CR18

CR8

diode, rectifier % diode, silicon diode, Zener

diode,

Zener

21.5V

9V

diode, silicon

10%

Sprague

amp

electrolytic

100V

0757-0438 0757-0449 0757-0442 0757-0438 0757-0449 0757-0438 0757-0398

0757-0422 0698-0083 0757-0100

·0757-0442 0614-1011

Stock

Number

0180-2216 6821

Type

36D

153G050CC2A 0180-0061 0150-0050 1901-0200 1901-0158

190t-0040 1902-3245

1902-3149 1901-0040

7-4

Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8, Q9 Q10

transistor transistor transistor transistor transistor transistor transistor transistor transistor

pnp npn npn pnp npn pnp npn pnp npn

2N4036 2N2405 X2N3904 (special) 2N2405 2N4036 2N2405 2N4036

2N2405

1853-0045 1854-0352 1854-0071 1853-0020 1854-0352 1853-0045 1854-0352 1853-0045 1854-0352

The Barney Oliver

D.

POWER SUPPLY (Continued)

Audio

Amplifier

Parts List

Reference Designation

R1,

R2

R3,

R4

R5,

R6, R7,

R9,

R10

R11,

R12

R13,

R14

R15,

R16

R17,

R18, R19,

R21,

R22

R23, R24,

DECK PARTS

E.

R8

R25,

R20

R26

lOn

26.1K 562

n lh

23.7K

42.2K

22K

1.96K 1K 562nlhwatt 10K

Description

watt

Reference Designation Description Cl,C2

C3,C4 C5,C6

CR1,

CR2

.0047

I-' F

.01

J.L

F ceramic disc cap

.01

J.L

F

mylar

diodes

Motorola

200V

MR

841

Stock

Number

0757-0346

0698-3159

0757-0815

0698-31)58 0698-3450 0684-2231 0698-0083 0757-0280 0757-0815 0757-0442

Stock

Number

0160-0155 0150-0093 0160-0161

1901-1038

Fl

F2,F3 Jl

J2,J3 J4

J5,

J6

J7

J8 J9 JI0 J11 J12 JI3,JI4,JI5,JI6,

J17,J18

line fuse

1.6A

slo-blo

.8A

slo-blo

speaker fuses 2 AC

power power line fuse

connector

receptacles

holder nut washer fuse clips speaker

phono phono power

filter filter and

input

output

jack, ring preamp

amplifier p.c.

and

control

jacks

fibre washers

for

amp

115V 230V

max

2110-0005 2110-0020

2110-0003 1251-2357

1251-2073 1400-0084 2950-0038 2190-0068 1400-0008

jack

(mates

with

PI)

Cinch-Jones S-202-B

tip

sleeve Switchcraft 12B

p.c.

connector18pin

p.c.

connector27pin

p.c.

connector10pin

1251-0141 1251-0141 1251-0172 1251-0166 GC Electronics

33-804

3050-0108

7-5

Parts List

E.

DECK PARTS (Continued)

Reference Designation

Description

The

Barney

Oliver

Audio

Stock

Amplifier

Number

J19,J20

L1 P1

Q12

Q13

R1

A&

R2 R3,

R4 R5, R6 R7 R8

R9 R10 R11, R15,

B

R12, R16

R13,

R14

sockets

anodized

for

Q12,

insulators inductor~13PoH speaker

power

dual

output

transistor

10K

stepped

plug

1.96K 10rl2w

8.2rllh

.05rl

w

51.1rllJ4 w 100rl1h w 47K

lAi

w

3.16K, 10K

1/8

w

Q13

(mates

pnp

npn

attenuator

with

J7)

1200-0041 1200-0043

special Cinch-Jones

P-202-CCT Motorola

MJ4502 Motorola

MJ802 Daven CPD-134-

M-H-4C687P 2dB/step

with

detents 0698-0083 0698-3601 0699-0003 0811-1826

0757-1000 0757-0198 0684-4711 0757-0279 0757-0442

Sl S2 S3 S4 S5 S6

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input mode filter phono

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off/on power

115Vonly 115/230V

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special special special 3101-0106 3101-1235 3101-0100

5081-0876 5081-5280

7-6

HEWLETT

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PACKARD

PoIgD

Mill

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475493·7507,

TWX

910]73

7267

FROM,

TO,

Dan

Lansdon

Barney

The

following

Amplifier

Oliver

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Page

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7-2

Part

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Labs,

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1501

Page

DAN

Mill LANSDON

Road,

HERE

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HP barney oliver audio schematic

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