Crossfire BMF1000D, BMF600D User Manual

Thank you and congratulations for

choosing

amplification needs. Crossfir

have been significantly improved

Crossfire Car Audi o for your

e amplifiers

throughout the years to assure quality and

reliability. Our goal is to incorporate the

latest technology into ever

y Crossfire

product, providing you with incredible

power and the unparalleled sound qualit y.

At

Crossfire we use only the highest

quality parts and the precision assembly

procedures in all of our amplifiers. This is

why we are confident your new

amplifier will provide you with a sound

value for years to come

.

Crossfire

1

eatures

MODEL:

B

M

F1000D

BMF600D

RMS Power / 4 ohms @ 0.08% T.H.D.

250W x 1

2 ohms @ 0.4% T.H.D.

1 ohm @ 1 % T.H.D.

Worst Cas

9

Variable 50

X-Over Slope

Variable Subsonic Filter

Variable 20 - 50Hz @ 12d

Variable 50

F

Class "D" Technology
Fully 1 Ohm Stable Operatio

n
Military Spec Audiophile Grade Components
High Efficiency P WM Power Supply

-Multi-stranded power torroid

-Oversized torroidial cor
MOSFET Input and Output T ransistor

e

s
Oversized Capacitor Banks
Discrete Mount Power and Speaker Terminal
Variable Lowpass Electronic Crossove

r
Variable Subsonic Filter
RCA Preamp Outpu

t

-Variable HP/LP/Full crossover
Built in Bridging Module

-Master / Slave Selector

-0/180 Phase Selector
5 Way Protection Circuitry
Soft Remote On/Off Circuitr y
Remote Subwoofer Level Control
Two Year Limited Warranty

Specifications

s

2

IMPORT

ANT

Please read all instructions before installation !

The quality of installation may affect the performance and reliability of your

Crossfire product. If you have any doubts or questions regarding installation, you
may wish to contact your authorized Crossfire dealer. Remember to follow all
wire and fuse requirements suggested in this manual. Warranty may void if
proper installation technique is not used (refer to warranty section in the rear of
this manual).

Operation

Both the Crossfire BMF1000D and BMF600D are single channel, dedicated
subwoofer amplifiers. Unlike other Crossfire VR amplifiers, both these amplifiers

operate as a single channel, therefore one amplifier cannot be bridged by itself. Do
not be fooled by the two sets of speaker outputs. Two outputs are provided strictly
for convenience and are paralleled internally on the circuit board of the amplifier. This
means that if both outputs are used with one driver each, the amplifier sees the same
load as if the same two drivers are connected to only one output terminal.

PWR

PRT

+

SPEAKER

+

-

-

+12 REM

POWER

- -

++

4 ohm subwoofer 4 ohm subwoofer

In both diagrams, the

GN

D

- -

4 ohm subwoofer 4 ohm subwoofer

amplifier sees a 2 ohm load

PWR

PRT

+

SPEAKER

+

-

-

+12 REM

POWER

++

GN

D

3

The BMF1000D and the BMF600D will reach their potential output into a 1ohm load.
However, a lower impedance can send the amplifier into current protection and
possibly damage the circuitry. To prevent damage, use the following formulas to help
you figure out the load you are placing on the amplifier. If you have any difficulties,
please contact your local Crossfire dealer or Crossfire's Technical Assistance at 562­906-0800.

Impedance Equations

Parallel Wiring

R

Series/Parallel Wiring Dual Voice Coil

R

A

Equation

A

Equation

B

A x B

= R

A + B

C D

B

(A + B) x (C + D)

A + B + C + D

= R

R

A B

R

A

Equation

Parallel Wiring, Dual Voice Coil

Equation

Series Wiring

B

A + B= R

C

(A x B)(C x D)

(A + B) + (C + D

D

=R

)

4