The Crossfire BMF MOSFET amplifiers have a powerful preamp section located on
the panel opposite the power terminals. Included in this preamp section is a fully
adjustable Two Way Crossover for the amplifier, Preamp Output, and the ACS
circuit. These features can be used to improve your system quality as well as make
the amplifiers easier to use on a day to day basis. Please read the following
instructions carefully.
CROSSOVER
On the preamp side of the amplifier there are two selectable crossovers. The
crossover section indicated in the drawing below is allocated to the amplifier itself.
This includes the (highpass filter) HPF/FULL/LPF (lowpass filter), the crossover
frequency selector, and the frequency multiplier. This crossover is flexible enough
so that it can be used for just about any speaker application.
Preamp F
eatures
On the two channel amplifiers only is another crossover section with a selector
switch marked HPF/FULL/LPF. This crossover section is designated to the preamp
output. The crossover frequency is selected by the crossover allocated for the
amplifier itself, however can be used in Highpass, Lowpass, or Fullrange
independently of that crossover. This allows for multiple system configurations to
be made.
LO
R
L
LEVEL
CROSSOVER
HPF FULL LPF
X30 X5 X1
OFF ON
ACS
50 250 (X1)
200 1200 (X5)
1K 6K (X30)
(HZ)
CROSSOVER
HPF FULL LPF
Crossover
selector
Frequency
selector
Frequency
Multiplier
LOW IN LINE OUT
R
L
LEVEL
CROSSOVER
HPF FULL LPF
X30 X5 X1
OFF ON
ACS
50 250 (X1)
200 1200 (X5)
1K 6K (X30)
(HZ)
CROSSOVER
HPF FULL LPF
Crossover
selector
Preamp
output
10
LOW IN
R
L
LEVEL
HPF FULL LPF
X30 X5 X1
50 250 (X1)
200 1200 (X5)
1K 6K (X30)
(HZ
)
CROSSOVER
ACS
R
L
LOW IN
OFF ON
LEVEL
HPF FULL LPF
X30 X5 X1
50 250 (X1)
200 1200 (X5)
1K 6K (X30)
(HZ
)
CROSSOVER
ACS
OFF ON
FRONT
REAR
Crossover
selector
Frequency
selector
Frequency
Multipliers
Frequency
selector
Crossover
selector
MODELS
BMF602
BMF1252
BMF2002
MODELS
BMF602
BMF1252
BMF2002
MODEL
BMF754
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