Rad

ial J

CR

Rea

mp®

Spe

cifi c

atio

ns

Freq

uenc

y res

pons

e:

20Hz

to 2

0kHz

(+/-

0.2d

B)

Tota

l har

mon

ic dis

torti

on:

0.05

% @

20H

z, 0

.006

% @

1kH

z

Inpu

t: +4

dB b

alanc

ed lin

e-lev

el, 6

00-O

hms

Max

imum

inpu

t lev

el:

+21d

Bu @

20H

z

Outp

ut:

Instr

umen

t-lev

el (v

ariab

le), u

nbala

nced

, 5k O

hms

Powe

r req

uirem

ent:

Pass

ive (n

o po

wer n

eede

d to

ope

rate

)

Size

: 3.

5” w

ide, 2

” high

, 5.5

” dee

p (8

9mm

x 51

mm

x 14

0mm

)

Weig

ht:

1 kg

or 2

.2 lb

s

War

rant

y: Tr

ansfe

rable

3 ye

ar w

arra

nty

FEAT

UR

ES

1. 18

0° P

HASE

INVE

RT: F

lips t

he el

ectric

al po

larity

of th

e outp

ut to

comp

ensa

te for

am

ps or

effec

ts tha

t inve

rt the

sign

al.

2. GR

OUND

LIFT

: Disc

onne

cts gr

ound

at

the ba

lance

d inp

uts to

elim

inate

hum

and

buzz

caus

ed by

grou

nd lo

ops.

3. XL

R IN

PUT:

Balan

ced,

low im

peda

nce,

line-

level

input.

Use

d to c

onne

ct the

ou

tput fr

om a

reco

rding

syste

m.

4. NO

SLIP

PAD

: Full

botto

m su

rface

ne

opre

ne pa

d pro

vides

elec

trical

isolat

ion

and m

echa

nical

insula

tion.

Keep

s the

JC

R Re

amp f

rom

movin

g aro

und w

hen

place

d on t

he gu

itar a

mp!

5. ¼”

TRS

INPU

T: Ba

lance

d, lo

w im

peda

nce,

line-

level

input

wire

d in

para

llel w

ith th

e XLR

. Use

d to c

onne

ct the

ou

tput fr

om a

reco

rding

syste

m.

6. ¼”

OUT

PUT:

Unba

lance

d, hig

h im

peda

nce i

nstru

ment-

level

outpu

t co

nnec

ts to

guita

r amp

s and

effec

t pe

dals.

Tran

sform

er is

olated

to pr

even

t hu

m an

d buz

z cau

sed b

y gro

und l

oops

.

7. MU

TE: D

epre

ss to

silen

ce th

e ¼” o

utput.

8. FI

LTER

: Thr

ee po

sition

switc

h use

d to

selec

t betw

een p

rese

t EQ

fi lter

s.

LOW

-PAS

S (h

i-cut)

:-3

dB @

1KhZ

HIGH

-PAS

S (lo

w-cu

t):

-3dB

@ 18

0Hz

FLAT

: byp

asse

s the

fi lt

er ci

rcuit

9. LE

VEL C

ONTR

OL: S

ets th

e rea

mping

ou

tput le

vel to

your

amp.

10.

STEE

L CON

STRU

CTIO

N: R

adial

‘st

anda

rd’ h

eavy

-duty

14-g

auge

stee

l co

nstru

ction

for a

dded

dura

bility

and e

xtra

shiel

ding a

gains

t elec

troma

gneti

c fi el

ds.

11.

BOOK

-END

DES

IGN:

Cre

ates p

rotec

tive

zone

arou

nd co

nnec

tors,

switc

hes a

nd

poten

tiome

ters f

or ad

ded p

rotec

tion.

12.

BAKE

D EN

AMEL

FIN

ISH:

Kee

ps yo

ur

Radia

l JCR

Rea

mp lo

oking

grea

t for

year

s!

www.radialeng.com

Radi

al E

ngin

eerin

g Lt

d.15

88 K

ebet

Way

, Po

rt Co

quitla

m

BC

V3C

5M5

Tel:

604-

942-

1001

Fa

x: 6

04-9

42-1

010

em

ail:

info

@ra

dial

eng.

com

True

to th

e M

usic

Rad

ial E

ngin

eeri

ng L

td.

Rad

ial J

CR

Rea

mp

user

gui

de V

1.0

- May

201

1 - P

art #

: R87

0 10

42 0

0S

ubje

ct to

cha

nge

with

out n

otic

e, c

opyr

ight

© 2

011,

all

right

s re

serv

ed

®®

RA

DIA

L EN

GIN

EER

ING

3 Y

EAR

TR

AN

SFER

AB

LE L

IMIT

ED W

AR

RA

NTY

RADI

AL E

NGIN

EERI

NG LT

D. (“

Radia

l”) w

arra

nts th

is pr

oduc

t to be

free

from

defec

ts in

mater

ial an

d wor

kman

ship

and w

ill re

medy

any s

uch d

efects

free o

f cha

rge a

ccor

ding t

o the

term

s of th

is wa

rranty

. Rad

ial w

ill re

pair o

r rep

lace

(at it

s opti

on) a

ny de

fectiv

e com

pone

nt(s)

of thi

s pro

duct

(exc

luding

fi nish

and w

ear a

nd te

ar on

comp

onen

ts un

der

norm

al us

e) fo

r a pe

riod o

f thre

e (3)

year

s fro

m the

origi

nal d

ate of

purch

ase.

In the

even

t that

a par

ticula

r pro

duct

is no

long

er a

vaila

ble, R

adial

rese

rves t

he ri

ght t

o re

place

the

prod

uct w

ith a

simi

lar p

rodu

ct of

equa

l or g

reate

r va

lue. In

the u

nlike

ly ev

ent th

at a d

efect

is un

cove

red,

pleas

e call

604-

942-

1001

or em

ail se

rvice

@ra

dialen

g.com

to

obtai

n an R

A num

ber (

Retur

n Auth

oriza

tion n

umbe

r) be

fore t

he 3

year

war

ranty

perio

d exp

ires.

The p

rodu

ct mu

st be

re

turne

d pre

paid

in the

origi

nal s

hippin

g con

taine

r (or

equiv

alent)

to R

adial

or to

an au

thoriz

ed R

adial

repa

ir cen

ter

and y

ou m

ust a

ssum

e the

risk o

f loss

or da

mage

. A co

py of

the o

rigina

l invo

ice sh

owing

date

of pu

rchas

e and

the

deale

r nam

e mu

st ac

comp

any a

ny re

ques

t for

wor

k to

be p

erfor

med

unde

r this

limite

d an

d tra

nsfer

able

warra

nty.

This

warra

nty sh

all n

ot ap

ply if

the p

rodu

ct ha

s bee

n da

mage

d du

e to

abus

e, mi

suse

, misa

pplic

ation

, acc

ident

or

as a

resu

lt of s

ervic

e or m

odifi c

ation

by an

y othe

r tha

n an a

uthor

ized R

adial

repa

ir cen

ter.

THER

E ARE

NO

EXPR

ESSE

D W

ARRA

NTIE

S OT

HER

THAN

THOS

E ON

THE

FACE

HER

EOF A

ND D

ESCR

IBED

AB

OVE.

NO

WAR

RANT

IES

WHE

THER

EXP

RESS

ED O

R IM

PLIE

D, IN

CLUD

ING

BUT

NOT

LIMIT

ED T

O, A

NY

IMPL

IED

WAR

RANT

IES

OF M

ERCH

ANTA

BILIT

Y OR

FITN

ESS

FOR

A PAR

TICU

LAR

PURP

OSE

SHAL

L EXT

END

BEYO

ND T

HE R

ESPE

CTIV

E W

ARRA

NTY

PERI

OD D

ESCR

IBED

ABO

VE O

F TH

REE

YEAR

S. R

ADIA

L SH

ALL

NOT

BE R

ESPO

NSIB

LE O

R LIA

BLE

FOR

ANY

SPEC

IAL,

INCI

DENT

AL O

R CO

NSEQ

UENT

IAL D

AMAG

ES O

R LO

SS AR

ISIN

G FR

OM TH

E US

E OF

THIS

PRO

DUCT

. THI

S W

ARRA

NTY G

IVES

YOU

SPEC

IFIC

LEGA

L RIG

HTS,

AN

D YO

U MA

Y AL

SO H

AVE

OTHE

R RI

GHTS

, WHI

CH M

AY V

ARY

DEPE

NDIN

G ON

WHE

RE Y

OU L

IVE

AND

WHE

RE T

HE P

RODU

CT W

AS P

URCH

ASED

.

True

to th

e M

usic

Ord

er N

o. R

800

1030

00

User

Gui

de

Rad

ial E

ngin

eeri

ng L

td.

JCR

Rea

mp ®

Use

rs G

uide

23

1011

JCR

Rea

mp ®

Use

rs G

uide

®

TM

1

89

765

4

12

XLR

BA

L.

LIN

E IN

PUT

FILT

ER

Low

-Cut

Flat

Hi-C

ut

12

3

180°

TRA

NSF

OR

MER

POLA

RIT

YR

EVER

SE

GR

OU

ND

LIFT

MU

TE

1/4”

TR

SB

AL.

/ U

NB

AL.

LI

NE

INPU

T

LEVE

L1/

4” T

SU

NB

AL.

OU

TPU

T

US

Pat

ent #

6,0

05,9

50

Con

grat

ulat

ions

and

than

k yo

u on

you

r pur

chas

e of

the

Rad

ial J

CR

Rea

mp®

. Rad

ial is

pr

oud

to c

ontin

ue th

e tra

ditio

n se

t by

John

Cun

iber

ti on

bui

ldin

g th

e ve

ry fi

nest

reco

rdin

g to

ols

and

are

confi

den

t tha

t you

will

fi nd

the

JCR

to fo

llow

sui

t. It

may

in fa

ct b

ecom

e on

e of

you

r fav

orite

stu

dio

tool

s of

all

time!

Eve

n th

ough

the

JCR

Rea

mp®

is p

lug

and

play

eas

y to

use

, we

reco

mm

end

that

you

ta

ke a

few

mom

ents

to re

ad th

roug

h th

e m

anua

l to

unde

rsta

nd th

e fe

atur

es a

nd fu

nc-

tiona

lity

and

take

full

adva

ntag

e of

the

man

y at

tribu

tes

that

are

bui

lt in

. If y

ou fi

nd th

at

ther

e is

any

thin

g m

issi

ng, p

leas

e co

nsul

t the

FA

Q s

ectio

n on

the

Rad

ial J

CR

Rea

mp

web

pag

e. T

his

is w

here

we

post

que

stio

ns a

nd a

nsw

ers

that

ofte

n ca

n as

sist

use

rs

with

our

pro

duct

s. If

this

doe

s no

t add

ress

you

r nee

ds, f

eel f

ree

to s

end

us a

n em

ail a

t in

fo@

radi

alen

g.co

m a

nd w

e w

ill d

o ou

r ver

y be

st to

repl

y to

you

in s

hort

orde

r. N

ow g

et

set t

o R

eam

p® li

ke S

teel

y D

an!

OVE

RVI

EWR

eam

ping

™ is

usu

ally

refe

rred

to a

s a

proc

ess

whe

reby

one

take

s a

pre-

reco

rded

trac

k an

d th

en s

ends

the

sign

al b

ack

to g

uita

r am

plifi

ers

and

effe

cts

peda

ls. I

n ye

ars

gone

by

, th

is h

as m

ostly

bee

n ap

plie

d to

gui

tars

. B

ut t

oday

, R

eam

ping

is a

pplie

d to

bas

s,

keyb

oard

s, v

oice

and

eve

n dr

ums!

The

bene

fi ts

to R

eam

ping

are

man

y: It

allo

ws

the

engi

neer

to c

aptu

re th

e pe

rform

ance

an

d th

en w

orry

abo

ut d

etai

ls s

uch

as th

e to

nal c

hara

cter

of t

he in

stru

men

t, th

e ‘w

idth

’ it

will

take

in th

e tra

ck, a

nd h

ow e

ffect

s su

ch a

s re

verb

, fl a

ngin

g or

com

pres

sion

may

be

used

to e

nhan

ce it

dur

ing

a pa

ssag

e or

be

appl

ied

to m

ove

it ou

t of t

he w

ay o

f a v

ocal

. In

oth

er w

ords

, Rea

mpi

ng le

ts y

ou m

ake

prod

uctio

n de

cisi

ons

as y

ou g

o al

ong.

You

are

no

t for

ced

into

mak

ing

a co

mm

itmen

t bef

ore

all o

f the

trac

ks h

ave

been

reco

rded

and

as

sem

bled

.

This

use

r gu

ide

expl

ains

the

proc

ess

and

disc

usse

s ex

ampl

es o

n ho

w y

ou c

an ta

ke

adva

ntag

e of

the

mag

ic th

at R

eam

ping

brin

gs to

reco

rdin

g. O

nce

you

get s

tarte

d, y

ou

will

qui

ckly

com

e to

real

ize

why

Rea

mpi

ng h

as b

een

the

secr

et b

ulle

t for

so

man

y to

p pr

oduc

ers

and

how

it w

ill b

ecom

e a

criti

cal p

art o

f you

r rec

ordi

ng p

roce

ss. H

ave

fun

and

don’

t be

afra

id to

exp

erim

ent.

GET

TIN

G S

TAR

TED

Rea

mpi

ng is

a tw

o pa

rt pr

oces

s. O

ne ty

pica

lly b

egin

s by

reco

rdin

g a

dry

track

usi

ng a

di

rect

box

and

then

pla

ys it

bac

k vi

a th

e R

adia

l JC

R R

eam

p. O

n pl

ayba

ck th

e JC

R R

e-am

p do

es th

e w

ork

of c

onve

rting

the

bala

nced

sig

nal t

o un

bala

nced

, set

s th

e le

vel a

nd

intro

duce

s tra

nsfo

rmer

isol

atio

n to

elim

inat

e an

y hu

m a

nd b

uzz

that

may

be

enco

unte

red

whe

n m

ixin

g ba

lanc

ed p

rofe

ssio

nal s

tudi

o ge

ar w

ith u

nbal

ance

d gu

itar

ampl

ifi er

s. A

s w

ith a

ll au

dio

equi

pmen

t, m

ake

sure

all

leve

ls a

re tu

rned

dow

n an

d au

dio

com

pone

nts

turn

ed o

ff be

fore

mak

ing

any

conn

ectio

ns. T

his

help

s av

oid

plug

in tr

ansi

ents

that

cou

ld

dam

age

sens

itive

ele

ctro

nics

or b

low

spe

aker

s.

REC

OR

DIN

G P

RO

CES

SC

onne

ct y

our g

uita

r to

the

inpu

t of t

he R

adia

l J48

or o

ther

dire

ct b

ox. T

he ‘t

hru-

put’

is

then

con

nect

ed to

the

guita

r am

plifi

er. T

his

enab

les

the

guita

rist t

o pl

ay a

nd h

ear t

heir

amp

unde

r nor

mal

per

form

ance

con

ditio

ns.

Am

p S

ound

(trk

-1)

Rad

ial J

48™

Dire

ct B

ox

Dry

Tra

ck O

ut

(rec

ord

trk-2

)Th

ru-p

ut to

am

p

Mic

roph

one

Whi

le th

is is

hap

peni

ng, t

ake

the

bala

nced

low

-Z o

ut fr

om th

e di

rect

box

and

sen

d th

is

‘dry

trac

k’ to

the

reco

rder

. The

dry

trac

k is

be

reco

rded

on

a se

cond

trac

k an

d sa

ved

for

Rea

mpi

ng. W

e re

com

men

d pl

acin

g a

mic

in fr

ont o

f the

gui

tar a

mp

so th

at y

ou c

an re

cord

th

e am

p’s

soun

d at

the

sam

e tim

e as

the

dry

track

. Thi

s ca

n be

use

d to

pla

y ba

ck th

e tra

ck fo

r the

gui

taris

t to

revi

ew th

e pe

rform

ance

or e

ven

save

d an

d us

ed a

t mix

-dow

n.

You

will

fi nd

that

edi

ting

fl ubb

ed n

otes

, mov

ing

thin

gs a

roun

d or

adj

ustin

g pi

tch

is m

uch

easi

er w

hen

the

track

is d

ry (

clea

n) a

s op

pose

d to

wet

(di

stor

ted)

. If y

ou a

re s

atis

fi ed

with

the

perfo

rman

ce, y

ou c

an s

end

the

guita

rist h

ome.

You

are

now

read

y to

sta

rt us

ing

the

JCR

Rea

mp.

REA

MPI

NG

PR

OC

ESS

Take

the

dry

track

from

you

r rec

ordi

ng s

yste

m a

nd s

end

it to

the

JCR

Rea

mp.

The

JC

R

Rea

mp

is e

quip

ped

with

bot

h X

LR a

nd ¼

” inp

ut ja

cks

that

mak

e it

easy

to a

dapt

to m

ost

reco

rdin

g sy

stem

s. C

onne

ct th

e ¼

” gui

tar o

utpu

t fro

m th

e JC

R R

eam

p to

the

guita

r am

-pl

ifi er

. Hit

play

… b

ring

up th

e le

vel o

n yo

ur re

cord

er a

nd th

en s

low

ly ra

ise

the

leve

l on

the

Rea

mp

until

you

hav

e re

ache

d a

com

forta

ble

liste

ning

leve

l. If

you

like,

try

inte

rfaci

ng

som

e pe

dals

in b

etw

een

the

Rea

mp

and

your

am

p to

hea

r the

ir ef

fect

.

Rad

ial J

CR

Rea

mp®

New

Rea

mp

Trac

k (tr

k-3)

Hi-z

Out

To

Am

pD

ry T

rack

In

(pla

ybac

k trk

-2)

Mic

roph

one

Bas

ic s

etup

with

mul

ti-tra

ck re

cord

ing

syst

em, t

he J

CR

Rea

mp

and

ampl

ifi er

.

Rad

ial J

CR

Rea

mp®

Hi-z

Out

To

Am

p

New

Rea

mp

Trac

k (tr

k-4)

Gui

tar E

ffect

Ped

als

Mic

roph

one

Dry

Tra

ck In

(p

layb

ack

trk-2

)

Alte

rnat

e se

tup

with

gui

tar e

ffect

ped

als

conn

ecte

d.

Onc

e yo

u ge

t com

forta

ble

with

the

effe

ct, w

e su

gges

t you

go

back

and

test

the

leve

ls b

y fi r

st c

onne

ctin

g th

e gu

itar d

irect

ly in

to y

our a

mp

and

then

com

parin

g th

e lo

udne

ss w

hen

you

are

feed

ing

the

dry

track

from

you

r rec

orde

r. Bo

th y

our g

uita

r and

the

reco

rder

’s p

layb

ack

shou

ld d

rive

the

amp

at a

bout

the

sam

e le

vel.

Take

not

e of

the

sign

al le

vels

on

both

you

r w

orks

tatio

n an

d th

e JC

R R

eam

p so

that

set

tings

can

be

repe

ated

.

USI

NG

TH

E M

UTE

SW

ITC

HTh

e JC

R R

eam

p is

equ

ippe

d w

ith a

sup

er h

andy

mut

e fe

atur

e. T

his

allo

ws

the

engi

neer

in th

e st

udio

to te

mpo

raril

y tu

rn o

ff (m

ute)

the

inco

min

g tra

ck w

ithou

t ch

angi

ng a

ny o

f th

e gu

itar

amp

or R

eam

p le

vel s

ettin

gs.

For i

nsta

nce,

the

amp

leve

ls m

ay b

e ex

cess

ive

and

you

may

nee

d to

dis

cuss

a m

ic p

lace

men

t with

you

r as

sist

ant.

You

can

have

the

reco

rdin

g sy

stem

pla

ying

bac

k a

loop

and

sim

ply

mut

e th

e R

eam

p to

allo

w y

ou to

con

vers

e as

you

mov

e th

ings

aro

und

with

out h

avin

g to

go

back

into

the

cont

rol r

oom

to s

top

the

track

.

USI

NG

TH

E PH

ASE

REV

ERSE

Ther

e ar

e se

vera

l ben

efi ts

to h

avin

g a

phas

e re

vers

e sw

itch

(180

° po

larit

y) o

n ha

nd. T

he m

ost o

bvio

us is

whe

n us

ing

two

JCR

Rea

mps

to

geth

er w

ith tw

o am

ps -

you

may

fi nd

that

one

am

p is

out

of p

hase

w

ith th

e ot

her.

By

depr

essi

ng th

e 18

0º p

olar

ity re

vers

e, y

ou c

an b

ring

the

rela

tive

phas

e in

line

. The

eas

iest

way

to te

st if

you

are

in o

r out

of

pha

se is

to fa

ce b

oth

amps

toge

ther

up

clos

e an

d pl

ay b

ass

note

s.

If th

e no

tes

disa

ppea

r, yo

u ar

e lik

ely

out o

f pha

se.

Ano

ther

ben

efi t

is w

hen

Rea

mpi

ng w

ith a

cou

ple

of m

ics

in th

e ro

om.

Sw

itchi

ng th

e po

larit

y w

ill a

ctua

lly m

ove

the

hot s

pots

(roo

m m

odes

) w

hich

can

som

etim

es e

limin

ate

troub

leso

me

reso

nanc

e. S

impl

y de

-pr

ess

the

switc

h an

d lis

ten.

Cho

ose

wha

teve

r set

ting

soun

ds b

est.

USI

NG

TH

E G

RO

UN

D L

IFT

The

very

fact

that

the

Rea

mp

JCR

is tr

ansf

orm

er b

ased

mea

ns th

at

you

will

imm

edia

tely

enj

oy th

e be

nefi t

s of

100

% is

olat

ion.

Thi

s be

ing

said

, the

re is

stil

l a c

omm

on g

roun

d th

at c

onne

cts

the

inpu

t to

the

outp

ut.

This

gro

und

conn

ectio

n ca

n be

bro

ken

by d

epre

ssin

g th

e gr

ound

lift s

witc

h. T

his

disc

onne

cts

pin-

1 on

the

XLR

. If y

ou e

ncou

nter

hu

m a

nd b

uzz,

it is

mos

t lik

ely

bein

g ca

used

by

a gr

ound

loop

. Ofte

n,

liftin

g th

e gr

ound

will

alle

viat

e th

e pr

oble

m.

USI

NG

TH

E EQ

FIL

TER

The

JCR

Rea

mp

is e

quip

ped

with

a t

hree

-way

tog

gle

switc

h th

at

intro

duce

s tw

o ty

pes

of fi

lters

or m

ay s

impl

y be

byp

asse

d to

reve

rt ba

ck to

the

orig

inal

Rea

mp

circ

uit.

The

dow

n po

sitio

n is

byp

ass.

Mov

ing

the

switc

h to

the

mid

dle

posi

tion

turn

s on

a h

igh-

pass

fi lte

r tha

t red

uces

the

low

freq

uenc

y co

nten

t of

the

sign

al. T

his

can

be h

elpf

ul w

hen

tryin

g to

cle

an u

p th

e so

und

of

a m

uddy

gui

tar t

rack

. Thi

s ca

n be

par

ticul

arly

effe

ctiv

e w

ith h

eavi

ly

dist

orte

d to

nes.

Mov

ing

the

switc

h to

the

up p

ositi

on tu

rns

on a

low

-pas

s fi l

ter

that

re

duce

s th

e hi

gh fr

eque

ncy

cont

ent o

f the

sig

nal.

This

is u

sed

to ta

me

over

ly b

right

gui

tar a

mps

. Thi

s ca

n be

par

ticul

arly

use

ful w

hen

tryin

g to

pus

h a

bass

trac

k ba

ck in

to th

e m

ix.

Rad

ial E

ngin

eeri

ng L

td.

JCR

Rea

mp ®

Use

rs G

uide

Rad

ial E

ngin

eeri

ng L

td.

JCR

Rea

mp ®

Use

rs G

uide

Rad

ial E

ngin

eeri

ng L

td.

JCR

Rea

mp ®

Use

rs G

uide

-25

+10

-20

-15

-10-5+0+5

2020

k50

100

200

500

1k2k

5k10

k

HIG

H-P

ASS

FIL

TER

-25

+10

-20

-15

-10-5+0+5

2020

k50

100

200

500

1k2k

5k10

k

LOW

-PA

SS F

ILTE

R

Freq

. res

pons

e w

ith h

igh-

pass

fi lte

r eng

aged

. Fr

eq. r

espo

nse

with

low

-pas

s fi l

ter e

ngag

ed.