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FRONT PANEL CONTROLS
1. INPUT GROUP
Two 1/4" phone jacks are provided to accommodate both passive and active instruments. The
PA S S I V E input is to be used with bass guitars with standard high impedance pickups. The high
impedance input offers 8db more gain than the A C T I V E input jack. The A C T I V E input is to be
used with instruments that contain active electronics. The INPUT GAIN knob is used to set the
input level, and the B L E N D knob controls how much signal is mixed through the 1 2 A X 7 v a c u u m
tube. With your bass full on and the blend control set to the T U B E postition, you are able to get
mild vintage tube distortion. The red C L I P LED indicates when the input is close to clipping. To
avoid clipping, reduce the bass level, G A I N knob or use the A C T I V E input jack.
2. PRE-SHAPE EQ
The PRE-SHAPE EQ is useful for dialing up a certain sound quickly and easily. The LOW BOOST
switch provides a 8dB boost at just under 80Hz. This is useful for adding some depth to the
bottom end without bringing up the lower midrange. The MID SHIFT switch offers two differ-
ent scooped mid selections. In the IN position the amp has a 12dB cut at 250Hz. Depressing
this button raises the cut frequency to 475Hz. The HI BOOST switch offers a 6dB boost at 6kHz.
This can provide good high frequency compensation when using only 15" or 18" speakers.
3. MAIN EQ TONE CONTROLS
The main EQ tone controls consists of a low shelving control, a sweep midrange control and
a high shelving control. The LOW control provides the overall shaping of the low frequencies.
The action of this control has been carefully matched to the response of the bass guitar. The
MID SWEEP controls perform as a semiparametric EQ over the mid frequency range. The M I D
G A I N knob provides a boosting or cutting action at a relatively narrow band of frequencies. When
the EQ GAIN knob of the MID SWEEP controls is set to "0" the mid sweep will have no effect.
To boost or cut a specific frequency rotate the M I DG A I N knob clockwise (right) or counter clock-
wise (left) respectively. The F R E Q control knob is used to select the center frequency where
the boosting or cutting will occur. The best way to become familiar with the MID SWEEP c o n-
trol is to set the M I D G A I N knob at either full cut or full boost and rotate the FREQ knob over
its range of frequencies. Listen to the results and experiment with different levels. The M I D
S W E E P E Q is a powerful sound shaping tool which usually requires some practice to get the
best results. The HIGH control knob is designed to cut or boost the high frequencies of the
bass guitar. Boosting with this control is useful for bringing up the very highest harmonics of
the bass, which is especially useful when slapping or popping. Note: boosting the high frequencies
can result in increased hiss, especially when using tweeters. This is normal.
4. COMPRESSOR
The C O M P R E S S O R of the Red Line Series amps is designed to limit the peaks so the volume
level is more constant. This allows greater power to your speakers preventing the power amps
from clipping. The R600/R1000 two knob compressor with T H R E S H O L D and R AT I O c o n t r o l s
is more flexible and precise than a single control unit. The user can dial up the exact amount
of compression desired and at what level they want the compression to begin. The T H R E S H-
O L D control knob sets the point where the compressor kicks in. In the O F F position the com-
pressor has no effect on the sound. Rotating this control in the clockwise direction lowers the
level where the compressor turns on. The compressor indicator LED shows when this thresh-
old is obtained, thus showing when the compressor is on. The R AT I O knob is used to set the
2
1
SPEAKER CONNECTIONS
R600/R1000 BI-AMP HOOK UP
The R600/R1000 bass amp contains two separate
(stereo) power amplifiers. This makes it possible to
run a full Bi-amped rig directly off of your R600/R1000.
The AMP 1 (LOW FREQ) 1/4" output jack should be
connected to a low frequency speaker cabinet, usu-
ally a 15" or 18" speaker. The AMP 2 (HIGH FREQ)
1/4" output jack should be connected to a set of
mid/high frequency drivers, often a 4x10 box with a
t w e e t e r. The crossover selector switch must be set
to the B I - A M P (out) position in order to engage the
internal electronic crossover. The crossover fre-
quency is set by rotating the X - O V E R knob on the front
panel, 800 Hz is recommended. The mix of the low
and high frequency volume levels are set with the A M P
1 and AMP 2 P O W E R A M P C O N T R O L k n o b s .
3
4
5
6
FOOTSWITCH
800-854-2235
www.carvin.com
GRAPHIC EQ
EFFECTS LOOP
R600
EFF LOOP
PROFESSIONAL REDLINE
STEREO BASS AMPLIFIER
P R E A M P
175W
8 OHMS/CH
250W
4 OHMS/CH
300W
2 OHMS/CH
DIRECT
500W
8
BRIDGED
LINE
600W
4
BRIDGED
SEND
SERIAL NUMBER
1212121
MADE
IN THE
US
A
RETURN
Low Frequency-W O O F E R
amount of compression once the threshold has been reached. When this knob is swept all the
way counter clockwise (left) the unit is set for a mild compression. As the knob is rotated clock-
wise (right) the compression ratio increases. The range of available compression ratios is 1.3
to 1 in the full counter clockwise position and 5 to 1 in the full clockwise position. The compres-
sor is interactive with the input gain knob and the volume knobs on the bass guitar itself. Lowering
the volume feeding the compressor will reduce the amount of compression and raising it will result
in more compression. To get a tight limiting sound which is often nice for slap style playing, set
the R ATIO control to the full clockwise position and bring up the THRESHOLD knob until the desired
reduction is realized.
5. NOISE GATE
The noise G AT E reduces the noise caused by the bass pickups. To use the G AT E , mute the
strings with your hand and raise the T H R E S H O L D control knob until the amp's noise is turned
off and the red LED illuminates. The G AT E will turn the amp on as the bass is played. The
noise gate senses the guitar. This alllows the INPUT GAIN and MASTER VOLUMES to be adjusted
independently of the gate setting. Only your guitar affects the setting.
6. ELECTRONIC X-OVER
The electronic X - O V E R is used to set the amp for a bi-amped configuration. When the B I - A M P
/ FULL RANGE selector switch is in the OUT position, the amp is in the bi-amp mode. To select
the crossover frequency, rotate the F R E Q control knob until the desired frequency is obtained
(800 Hz is recomended). A bi-amped system allows the user greater control over the high and
low frequencies of their stage rig. This allows speakers designed for specific frequencies to
be utilized to their fullest potential.
7. GRAPHIC EQ/EFFECTS LOOP
The nine band graphic EQ has been designed with the center frequencies most requested by
professional bass players. This E Q can be used to fine tune the tonal content of the amps output.
Since the graphic EQ is controllable with either the optional F S 2 2 footswitch or the E Q s w i t c h
on the front panel, it can be used to develop a second sound from the amp. Musicians that
play more than one bass on stage will find this useful to get the sounds they desire out of each
of their instruments. The footswitch selectable graphic EQ can also be useful during passages
of a song when the bass needs to punch through the mix. A green LED indicator located along
side of the EQ signifies when the graphic EQ is working in the amp.
The yellow effect loop LED labeled EFF LOOP indicates when the effects loop is turned on.
Note: the E Q switch on the front panel overrides the S E L E C T switch on the footswitch. So
when the graphic EQ is off on the front panel it cannot be turned on with the footswitch.
8. OUTPUT GROUP (AMP CONTROLS, BIAMPING & JACKS)
The output group determines how the Red Line amplifier interfaces with other gear and speak-
ers. The master VOLUME control sets the overall volume level of the amp. The P O W E R A M P
CONTROL 1 & 2 knobs control the final volume to the individual amps. These are used to bal-
ance the low and high cabinets when bi-amping or stereo signals. To set the balance in a bi-
amped rig, bring up the AMP 1 (LOW FREQ) knob until the desired volume level is reached.
Now bring up the AMP 2 (HIGH FREQ) knob until the desired balance between the lows and
highs is met. If the V O L U M E control is at its maximum position and more volume is needed,
7
FULL RANGE MODE:
If only one speaker is being used
SPK 1
SPK 2
LOW FREQ
BRIDGE
HI FREQ
BIAMP
BIAMP
ONLY
10
FS-22
(or multiple full range speakers),
FULL RANGE
2
MIN
4
MIN
2
MIN
120VAC
60Hz
BRIDGE
700VA
connect it to the AMP 1 or the A M P
ON
OFF
GND
LIFT
AMP 1 RETURN
AMP 2 RETURN
2 output jacks. The internal
PREAMP 1 OUT
PREAMP 2 OUT
(LOW FREQ)
(HI FREQ)
crossover switch should be set to
the FULL RANGE mode (IN), since
it will not be used in this applica-
t i o n .
High Frequency -MID/TWEETER
8
9
FS-22
800-854-2235
FOOTSWITCH
www.carvin.com
GRAPHIC EQ
EFFECTS LOOP
R600
EFF LOOP
PROFESSIONAL REDLINE
STEREO BASS AMPLIFIER
P R E A M P
175W
8 OHMS/CH
ON
250W
4 OHMS/CH
OFF
300W
2 OHMS/CH
500W
8
BRIDGED
DIRECT
GND
LINE
LIFT
600W
4
BRIDGED
SEND
SERIAL NUMBER
1212121
MADE
IN THE
US
A
RETURN
SPK 1
LOW FREQ
BIAMP
2
MIN
BRIDGE
AMP 1 RETURN
PREAMP 1 OUT
(LOW FREQ)
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