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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.
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