Crate ThunderBass BX-4115 Owner's Manual page 6

BX-440H / BX-4115
BX-440H / BX-4115
Using the Biamp Capabilities – BX-
About Biamping:
The Biamp High and Low outputs of the BX-440H and the BX-4115 allow for a number of ways
to "biamp" your system: that is, using two amplifier/speaker combinations to share the task of reproducing the full
range of your bass. Biamping increases each amplifier's efficiency by allowing it to "focus" on a certain frequency
range, rather than operating full range. The results of biamping include cleaner sound and more output power than
that of a single-amped system, which is especially useful during high volume live performances.
There are a number of different ways to use the BX-440H and the BX-4115 in biamp configurations. The examples
on the following pages show several biamp possiblities – you may find others. Your Crate dealer can assist you in
assembling the custom biamp ThunderBass rig to best suit your playing style and venue.
The Biamp Controls:
control (#15) sets the point where the low frequency signal rolls
off and the high frequency signal begins. This control is variable
from 100Hz to 1kHz. Adjust this control to best suit the fre-
quency range of your low frequency speaker cabinet. The
Crossover Balance control (#16) proportions the signal between
the high and the low output jacks (#26 and 27, rear panel).
Adjust this control for the most appealling blend of lows and
highs.
Example 1:
With the BX-440H and a BXE-18
cabinet for the low end; a BX-
220H and a BXE-410H cabinet for
the high end:
Plug your bass into the BX-440H, then:
(1) Run a shielded cable from the
biamp high out jack of the BX-440H to
the power amp in jack of the BX-220H.
(2) Run a speaker cable from the
speaker out jack of the BX-220H to the
input jack of the BXE-410H.
(3) Run a shielded cable from the
biamp low out jack of the BX-440H to
its power amp in jack.
(4) Run a speaker cable from the
speaker out jack of the BX-440H to the
direct in jack of the BXE-18.
Adjust the Crossover Frequency and
Balance controls for the best sound.
6
440
The front panel Crossover Frequency
from
bass
ThunderBass Amplifier
H:
15
BX-220H
PREAMP
OUT
EFFECTS
LOOP
PWR AMP RETURN
IN
1
SEND
S
P
E
A 150W @ 8 OHMS
K 220W @ 4 OHMS
MIN. LOAD
E
R
S
MADE IN THE U.S.A. BALANCED
LINE OUT
BY SLM ELECTRONICS
1400 FERGUSON AVE.
BX-440H
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
AVIS: RISQUE DE CHOC
ELECTRIQUE. NE PAS OUVRIR. 3
WARNING: TO REDUCE THE
RISK OF ELECTRIC SHOCK, DO NOT
EXPOSE THIS EQUIPMENT TO RAIN
OR MOISTURE.
CAUTION: CHASSIS SURFACE HOT.
1200W MAX / 120V / 60Hz ATTENTION: SURFACIE DE CHASSIS CHAUDE.
MODEL BX-440H
SERIAL #
AC LINE IN
MADE IN THE U.S.A.
BY SLM ELECTRONICS
1400 FERGUSON AVE.
MADE IN THE U.S.A. 47-146-04
BY SLM ELECTRONICS
1400 FERGUSON AVE. SERIAL #
ST. LOUIS, MO 63133
CRATE BXE-18 POWER HANDLING: 200 WATTS
MODEL:
IMPEDANCE: 8 OHMS
CROSSOVER FREQUENCY: 200Hz
HIGH DIRECT CROSSOVER
OUT IN INPUTS
2
input
MADE IN THE U.S.A. 47-146-04
BY SLM ELECTRONICS
1400 FERGUSON AVE. SERIAL #
ST. LOUIS, MO 63133
CRATE BXE-18 POWER HANDLING: 200 WATTS
MODEL: IMPEDANCE: 8 OHMS
CROSSOVER FREQUENCY: 200Hz
HIGH DIRECT CROSSOVER
OUT IN INPUTS
4
direct
in
C R O S S O V E R
FREQUENCY BALANCE
300 Hz
LO
100 Hz 1kHz
PREAMP
OUT
PWR AMP
IN
S
BXE-410H
P
E
A
150W @ 8 OHMS
220W @ 4 OHMS
K
MIN. LOAD
E
R
S
3
BXE-18
2 4
TO TO
BXE-410H BXE-18
16
HI
BX-220H
EFFECTS
LOOP
RETURN
1
SEND
BALANCED
LINE OUT
BX-440H