Crossfire BMF Class D Amp Owner Manual

Thank you and congratulations for choosing Crossfire Car Audi o for your amplification needs. Crossfire amplifiers have been significantly improved 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 Crossfire amplifier will provide you with a sound value for years to come .

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Features

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 e

MOSFET Input and Output T ransistors

Oversized Capacitor Banks

Discrete Mount Power and Speaker T erminals

Variable Lowpass Electronic Crossove r

Variable Subsonic Filter

RCA Preamp Outpu t

-Variable HP/LP/Full crossove r

Built in Bridging Module

-Master / Slave Selector

-0/180 Phase Selector

5 Way Protection Circuitr y

Soft Remote On/Off Circuitr y

Remote Subwoofer Level Control

Two Year Limited Warranty

Specifications

MODEL: B MF1000D

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.

Efficiency / Typical

Worst Cas e

+

Signal To Noise

500W x 1

1000W x 1

86%

72%

10Hz – 250Hz

>90dB

Damping Factor

Input Sensitivity

Input Impedance

Circuit Breaker / fuse

Dimensions 9

200

240 mV – 6V

20K ohms

100 Amp

.3”W x 2.1”H x 13” L

BMF600D

150W x 1

300W x 1

600W x 1

86%

72%

10Hz – 250Hz

>90dB

200

240mV – 6V

20k ohms

60 Amp

9.3”W x 2.1”H x 10" L

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CROSSOVER

Low Pass

X-Over Slope

Variable Subsonic Filter

Preamp Crossover

Preamp output

Variable 50 – 250Hz

12dB

Variable 20 - 50Hz @ 12d B

Variable 50 – 250Hz

All specifications are with 12.5 volts DC. Typical output with 14.4 volts DC is 20% higher.

IMPORTANT

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

+12 REM

POWER

GND

In both diagrams, the amplifier sees a 2 ohm load

-

+

4 ohm subwoofer

-

+

4 ohm subwoofer

-

+

-

+

PWR

PRT

+12 REM

POWER

GND

-

+

4 ohm subwoofer

-

+

4 ohm subwoofer

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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 562-

906-0800.

Impedance Equations

Parallel Wiring Series Wiring

R A B R A B

Equation

A x B

A + B = R

Equation A + B = R

Series/Parallel Wiring Dual Voice Coil

A B C

R

Equation

(A + B) x (C + D)

A + B + C + D = R

D

R

A

Parallel Wiring, Dual Voice Coil

B C D

Equation

(A x B)(C x D)

(A + B) + (C + D)

=R

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