4
S
S
S
S
W
W
W
W
R
R
R
R
®
W
W
W
W
o
o
o
o
r
r
r
r
k
k
k
k
ii
ii
n
n
n
n
g
g
g
g
P
P
P
P
r
r
r
r
o
o
o
o
™ B
B
B
B
a
a
a
a
s
s
s
s
s
s
s
s
A
A
A
A
m
m
m
m
p
p
p
p
ll
ll
ii
ii
ff
ff
ii
ii
e
e
e
e
r
r
r
r
s
s
s
s
✧
s
s w
w r
r s
s o
o u
u n
n d
d .
. c
c o
o m
m
✧
F
F
F
F
r
r
r
r
o
o
o
o
n
n
n
n
tt
tt
P
P
P
P
a
a
a
a
n
n
n
n
e
e
e
e
ll
ll
✧
s
s w
w r
r s
s o
o u
u n
n d
d .
. c
c o
o m
m
✧
Congratulations on your purchase of an SWR
®
WorkingPro™ amplifier! You now own a feature-packed,
professional-quality SWR
®
bass amplifier, with the famous
SWR
®
tone, power, clarity, and true full-range response
that’s made SWR
®
the choice of professionals for over
twenty years.
Whether you’ve chosen the WorkingPro™ 400 or 700,
each model in the WorkingPro™ series combines the best
classic SWR
®
features:
•
The famous preamp designed by original engineer
Steve W. Rabe
•
The Aural Enhancer
•
The 4-band active EQ with variable midrange – with
exciting new features, like the footswitchable tuning
mute
•
More flexibility with the XLR output
•
And especially, the new, exclusive Bass Intensifier
circuit, which simultaneously boosts and compresses
a set of chosen frequencies to add pure low-end
thickness to your bass sound
SWR
®
, since its founding in 1984, was created to serve
one purpose – to provide bass amplification products with
professional quality, tone, features and power delivery for
players of all levels and styles. We sincerely thank you for
choosing SWR
®
, and remain committed to helping you
Amplify Your Future™.
Read through this Owner’s Manual before using your
amplifier not only to ensure your safety and protect your
investment, but so the full potential of the SWR
®
WorkingPro™ is at your command!
Please verify that the following items were included in your
SWR
®
WorkingPro™ packaging: AC Cable, Dual
Footswitch, SWR
®
Catalog.
A. INPUT - Plug your bass into this jack using a shielded
instrument cable.
B. INPUT PAD - Reduces input sensitivity to allow
cleaner response with high-output (above 1-Volt RMS)
guitars. Use the setting that sounds best!
NORMAL—Full input sensitivity
–10dB PAD—Lower input sensitivity
Active (pre-amplified) bass guitars—if you hear
distortion even with the INPUT PAD switch active and
a low (not clipping) GAIN {D} setting, try replacing your
guitar battery.
C. MUTE - Disables all audio output except the TUNER
OUT {V} and HEADPHONES {R} jacks. Useful when
tuning up, during instrument changes or while using
headphones. The LED
indicates MUTE is on.
D. GAIN - Adjusts the volume level of the preamp
section. After you adjust any tone or effects levels, use
the PRE AMP CLIP LED to find the best GAIN setting
for the optimal signal–to–noise ratio:
PRE AMP CLIP - Indicates when the preamp, tone
circuits or output buffer are being overdriven (clipping)
causing signal distortion. Occasional flashing is
normal at your instrument’s peak output levels. The
type of clipping that this LED indicates is not harmful
to your amplifier, so reduce GAIN if you hear unwanted
distortion while this LED is on. NOTE: If an effects
device is overdriven by the output level of the
EFFECTS SEND {S} jack, reduce GAIN, then increase
MASTER Volume {M} to adjust the overall loudness of
the amplifier.
