Page 1
BMF200.2 | BMF300.2 | BMF400.2 | BMF600.2 | BMF400.4 | BMF600.4
BMF800.5 | BMF250M | BMF500M | BMF1000D | BMF1700D
Page 2
- I -
For your records, Crossfire recommends keeping the model and serial number of your new Crossfire amplifier. This could
possibly help you recover your amplifier in the event of theft. Use the following spaces to do so and make sure to keep
your manual in a safe and dry place.
Model:
Serial Number:
Date of Purchase:
Place of Purchase:
Notes:
E-mail Contact s:
tech@crossfirec araudio.com (technical support)
Address and Phone number s:
3247 Story Rd. West, Irving, TX 75038
PH: (972) 570-080 0 FX: (972) 570-2200
www.crossfirecaraudio.com
Thank You for choosing Crossfire! Enjoy the music!
PER SONA L RE CORD S / C ONTAC T INF ORM AT ION
IMPORTANT MESSAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
FEATURES & SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
POWER, GROUN D, REMOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
SPEAKER OUTPUT & CON NECTING WIRES . . . . . . . . . . . . . . . . . . . 5
WIRING CONFIGUR ATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
SINGLE INPUTS & STR APPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9
LOW LEVEL INPUT CON FIGURATIONS . . . . . . . . . . . . . . . . . . . . . . . 10-11
IMPORTANT PRODUCT MESSAGE ( MUST READ ) . . . . . . . . . . . . . . . 12
WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
TABL E OF CONT ENT S IMP ORTAN T
PLE ASE REA D AL L INS TRUC TION S BE FORE INSTA LLIN G!
The quality of installation may affect the performance and reliability of your Crossfire product. If you have any doubts or questions regarding installation, we recommend that you contact your authorized Crossfire dealer. Remember to fo llow all wire and
fuse requirements suggested in this manual. Warranty may void i f proper installation technique is not used (refer to the warranty
section in the rear of this manual).
Appropriate mounti ng is very impor tant for prolonged life expectancy of any amplifier. Select a loc ation with ample space that
allows sufficient airflow and provides protection from moisture. Keep in mind that an amplifier should never be mounted upside
down. Upside down mounting will compromise heat dissipation through the heat sink and will engage the thermal protecti on circuit
much sooner. Excessive heat can shorten your amplifi er’s life. To maximize heat dissipation, be sure to le ave at least 2.5 inc hes
of clearance around the amplifier. Fans should be used in corresp ondence with an escape duct for heat when mounting the ampli
-
fier in an enclosed or restricted area.
Avoid slipping and scratching your new Crossfire amplifier by pre-drilling the mounting holes with either an 1/8” or 3mm diameter
drill bit when using the screws supplied in the accessory kit. Always investigate the mounting area thoroughly for electrical wires,
vacuum lines, and brake or fuel lines before you start, as to prevent any potentially expensive mistakes.
MOU NTIN G
Incorrect Mounting
Heat is trapped inside the amplifier, shortening the life
of the electronic components.
Correct Mounting
Heat is lifted from the amplifier heat sink.
INPUT OUTPUT LEVEL
6V 0.15V 50Hz 250Hz 0dB12d
B
BAS
S
BOOS
T
L
R
BRIDGED
SPEAKERS
FREQ
.
PW
R
- +
INPUT OUTPUT LEVEL
6V 0.15V 50Hz 250Hz 0dB12d
B
BAS
S
BOOS
T
L
R
BRIDGED
SPEAKERS
FREQ
.
PW
R
- +
Page 3
- 2 - - 3 -
CL ASS A/B F EATUR ES
Fully 2 Ohm Stable Stereo Op eration
Military Spe c. Audiophile Grad e Components
High Efficien cy MOSFET Power Supplies
Multi-St randed Power Torroid
Efficient Bipol ar Output Transisto rs
Oversized Capacitor B ank
Wire Free PC Board Layouts
Nickel Plated Input and Ou tput Connectors
Variable Highpass an d Lowpass Electroni c Crossovers
Simultaneous Mon o/Stere o Operation Capabil ity
Internally Brid geable
5 Way Protection Circuitr y
Soft Start , On/O ff Circuitr y
CL ASS D FE ATURES
1 Ohm Stable Mono Op eration
Military Spe c Audiophile Grade C omponents
High Efficien cy PWM Power Supply
Multi-St randed Power Torroid
Oversized Torroidial Cor e
MOSFET Input and Ou tput Transistors
Oversized Capacitor B anks
Discrete Mount Power and Spea ker Terminals
Variable Lowpass Elect ronic Crossover
Variable Subsonic Filter
RCA Preamp Output
Strappable
5 Way Protection Circuitr y
Soft Remote On /Off Cir cuitry
SPE CIFI CATIO NS S PECI FICAT IONS
250W x1
500W x1
1000W x1
50-150hz
330mm 465mm
YES YES
YES YES
50-150hz
1700W x1
850W x1
425W x1
BMF1700D
BMF 200.2 BMF300.2 BMF400.2
BMF 250M BMF 500M BMF800.5
BMF600.2 BMF400.4 BMF600.4
RMS @ 4 ohms (12.5v)
50W X2 75W X2 100W X2 150W X2 50W X4 75W X4
RMS @ 2 ohms (12.5v)
100W X2 150W X2 200W X2 300W X2 100W X4 150W X4
Bridged @ 4 ohms(12.5v)
200W X1
300W X1 400W X1 600W X1 200W X2 300W X2
Dimensions: H = 60.5mm
W = 202mm, L =
220mm 270mm 330mm 370mm 310mm 370mm
Line Output
YES YES YES YES YES YES
LP/HP Crossover
50-250Hz 50-250Hz 50-250Hz 50-250Hz 50-250Hz 50-250Hz
RMS @ 2 ohms (12.5v)
250W x 1 500W x 1 400W x 1
RMS @ 4 ohms (12.5v) 160W x 1 330W x 1 100W x 4
50-250Hz 50-250Hz 50-250Hz
LP/HP Crossover
Dimensions: H = 60.5mm
W = 202mm, L =
270mm 370mm 550mm
Line Output YES YES NO
Page 4
- 4 - - 5 -
POW ER - GROU ND - REMO TE
All Crossfire amplifiers are optimized to work within 12.00 to 14.5 volts DC. Therefore, as a precaution, the vehicle’s electrical
system should be checked for correct voltage sup ply with the help of a voltmeter. First, connect the test leads of the voltmeter to
the battery terminals with the ignition of the vehicle in the off position. The voltmeter should read no less than 12 volts. Next, check
voltage of the batter y with the engine running between 1500 and 2000 rpms. The voltmeter should now read between 13.5 and
14.5 volts. If your vehicle’s electrical system is not up to these specifications, we recommend having it checked by an automotive
mechanic before you further the installati on.
POWER WIRE AN D FUSE
The proper wire size i s very impor tant for an amplifier capable of these power levels. The following are the minimum recom
-
mended fuse values and wire gauge for lengths up to 20f t.
POWER
Power wires need to be connected directly to the battery using the wire requirements listed above. Never use the fuse box or any
other wire as a source for the power for an amplifier. Before you start, choose the easiest and safest path to r un the wire from
the battery to the amplifi er. Generally, try to keep the power wir e on the driver’s side of the vehicle (See Signal Inputs & Outputs
for explanation). Follow the rules below for running the power c able through the vehicle:
1. Use grommets when passing the power wire through any metal wall of the vehicle.
2. Avoid sharp corners or sharp body par ts that may easily cut through the insulation on the wire.
3. Avoid running the power wire over engine components and near heater cor es.
4. Avoid the gas, brake and clutch pedals and their mechanisms.
5. Use an inline fuse at the battery to eliminate the ris k of a fire caused by a short in your power wire.
6. Connect the fuse holder as close to the bat tery positive terminal as possible.
GROUND
The wire used for ground should be of the same gauge as the power wire. Make sure to choose a different color (generally black)
so that you do not reverse the polarity at the amplifier ter minals. Follow the rules below for connecting the ground wire properly:
1. Avoid using seat bolts, seatbelt bolts, and fender wells for ground.
2. Choose a metal area close to the amplifie r that appears to be a good source of ground, such as the floor.
3. Investigate the area you wish to use for electrical wi res, vacuum lines, and brake or fuel lines.
Directions for connecting the gr ound wire to the vehicle:
1. Find a nut and bolt to fit the ring terminal you have chosen.
2. Drill a hole just large enough for the bolt to fit t hrough at the source of ground.
3. Use either a wire brush or sandpaper to eliminate unwanted paint around the hole you have drilled as to supply a better contact
for your ground.
4. Terminate the ground wire to the ring terminal and attach it to the bare metal using the nut and bolt. It is very important for this
connection to be solid.
5. Spread silicon over the screw and bare metal to prevent rust and possible water le aks.
REMOTE TURN -ON
Between the power and ground of the amplifier is a remote turn-on terminal. This terminal must be c onnected to a switched +12
volt source to make t he amplifier operational. Typically, remote turn-on leads are provided at the head unit that will turn on and
off the amplifier in c orrespondence with the source. This means you w ill most likely have to remove the head unit from the dash
to find the source +12V output wire.
Once the head unit is pulled from the dash, find the remote turn-on located in the wiring harness of the head unit. The majority of
vehicles will be using an after market head unit when installing an after market amplifier. These after market head units generally
use a blue or blue/white colored wire as the rem ote turn -on lead. In most cases the blue/white lead is usually the remote turn on
lead. However, when using a factory radio, the power antenna wire may be used as a turn- on lead. You must first test this lead to
make sure that it remains e nergized regardless of the source the hea d unit is switched to. The antenna lead will energize when
switched to the tuner mode, but turn of f when the unit is switched to tape/CD player. Only if a lead is not available at the source,
a switched +12 volt supply, such as a toggle switch should be applied. Use a minimum of 18-awg wire to connect the amplifier to
this lead. Connect this lead to the head unit using a mating terminal or by solder ing the three points together, but be sure to heat
shrink the connection. If possible r un this wire along side of the power wire using the same precautions.
SPE AKE R OU TPUT
CON NECT ING THE W IRES
LOAD
Please be aware of the minimum impedance you may apply to your particular model ampli fier. See chart below for more informa
tion. Any lower impedanc e than the minimum can send the ampli fier into current protection or possibly damage the circuitry. To
prevent damage, use the following formulas to help you fi gure out the load you are placing on your amplifier. If you have any dif
ficulties, please contact your local C rossfire dealer or Crossfire’s Technical A ssistance at tech@crossfirecaraudio.com
WIRING
Always choose speaker wire wisely. Make sure that the wire is appropriate for the speaker you are applying it to. It is highly recom
mended not to use anything smaller than 16awg. Consult your dealer. As with the power wires, use caution around sharp corners
or body par ts that may easily cut throu gh the insulation on the wir e. If running into the doors, it is important to use a protective
boot in the door jam to protect the wire from being pinched as well as keeping water or moisture from entering the vehicle. Use the
factory boots whenever possible. And always make sure the wire is out of the way of the window track. To connect the wire to the
speaker, strip off approximately 1/2” inch (12mm) of the insulation and terminate the wires using insulated speaker terminals (not
supplied) or by soldering the connection to the lo udspeaker. Be sure that the polarit y at the loudspeaker is correct.
At this point, the power, ground, remote, and speaker wires should be run to the general location of where the amplifi er is to be
mounted. If the wires are to be hidden under the carp et, you now need to cut a slit fo r them to come through. To do this, plac e
the amplifier in the location it is to be m ounted to verify where the slits need to be. Make sure that there will not be a conflict
with the mounting of the amplifier and the wires. Pull the wires through the slit to the terminals leaving approximately 6” (150mm)
of slack and cut the wires to an equal length. Locate the spade connectors sup plied with the amplifier. Strip approximately 1/2”
inch (12mm) of insulation from the end of each wire. Crimp the spade connectors onto the st ripped end of the wire. Loosen the
terminal screws on the ampli fier. Inser t the wires into the proper terminals and tighten th e screws securely. Check your connections by giving the wires a slight tug.
NOTE: Not all models have screw type connectors. Other models use “Discrete Mount” connectors which require bare wire instal
lation (no connector needed).
Page 5
- 6 - - 7 -
2 C HANN EL W IRIN G CON FIGU RATIO NS CL ASS D WIR ING CONFI GUR AT IONS
SINGLE CHAN NEL
OPERATION (BR IDGED)
TWO CHANNE L
OPERATION (STE REO)
THREE CHANN EL
OPERATION (STE REO / MONO)
WIRING USING (1) TE RMINAL
The Class D amplifiers are single channel amplifiers. Unlike Crossfire Class A /B amplifiers, these operate as single channel,
therefore one amplifier cannot be bridge d by itself. Please see diagr am below.
FOUR CHANNEL
OPERATION (STE REO)
THREE CHANN EL
OPERATION (STE REO & MONO)
Each subwoofer has a single 2
ohm voice coil and are connected
in parallel to one terminal, the amplifier will see a 1 ohm.
CROSSOVER
On the side panel of your amp lifier is a potentiometer marked 50Hz-250Hz. This controls the relative crossover point for the
amplifier. To apply the crossover feature, locate the switch on the same side panel that’s labeled HPF/FULL/LPF. For highpass
applications, such as componet sets or coaxials, choose HPF. For lowpass applications, such as woofers, choose LPF. If you are
looking for full range application, plac e switch on FULL. Note that full will override the crossover completly
Listed below are recommended crossover points for various size speakers. These are only guidelines. Ac tual crossover points
recommended by the speaker manufacturers may vary and we sug gest you follow those recomendations.
Speaker size Crossover recommendat ion:
4” (100mm) Compon ent/ coaxial HPF 130Hz - 150Hz
5.25 (130mm) Comp onent/ coaxial HPF 80Hz - 110Hz
6’ (160mm) Compon ent/ coaxial HPF 70Hz - 100Hz
8” (200mm) wo ofer L PF 90Hz - 120Hz
10” (250mm) subw oofer LPF 70Hz - 100 Hz
12” (300mm) subw oofer LPF 70Hz - 100 Hz
15” (380mm) subwo ofer LPF 50Hz - 8 0Hz
BASS BOOST
If your system is lacking low bass response locate the
BASS BOOST dial on the amplifier. A boost from 0-12dB
centered around 45Hz can b e added by turning the dial
clockwise. With the dial turned all the way counter clock
wise 0 boost will be added. This boost function is available
on specific models only. Please see specification chart for
verification. Crossfire hi ghly recommends using this fea
ture only on amplifiers powering subwoofers.
PRE AMP FEAT URES
INPUT OUTPUT LEVEL
6V 0.15V 50Hz 250Hz0dB12dB
BASS
BOOST
L
R
BRIDGED
SPEAKERS
FREQ.
PWR
- +
INPUT OUTPUT LEVEL
6V 0.15V 50Hz 250Hz0dB 12dB
BASS
BOOST
L
R
BRIDGED
SPEAKERS
FREQ.
PWR
- +
LEVEL LEVELINPUT
POWER
INPUTOUTPUT
FREQ.
HPF
LPF FLAT
HPF
LPF FLAT
L R
L R
50H
z
6v
0.15V
6v
0.15V
250H
z
FREQ.
50Hz
250Hz
FRONT
REAR
INPUT OUTPUT LEVEL
6V 0.15V 50Hz 250Hz0dB12dB
BASS
BOOST
L
R
BRIDGED
SPEAKERS
FREQ.
PWR
- +
LEVEL LEVELINPUT
POWER
INPUTOUTPUT
FREQ.
HPF
LPF FLAT
HPF
LPF FLAT
L R
L R
50H
z
6v
0.15V
6v
0.15V
250H
z
FREQ.
50Hz
250Hz
FRONT
REAR
Page 6
- 8 - - 9 -
SIN GLE INPU TS
ST RAPP ING T WO A MPLI FIER S TO GETH ER
Getting a clear signal from t he head unit to the amplifier is very important. To achieve this, the proper signal cab les (RCA style)
must be used. Estimate the length of the cables necessary. Take note that signal cable manufac turers will probably not have the
exact length necessar y for your vehicle. If you are bet ween sizes, purchase the slightly longer cab le. You can always hide the
extra wire.
Be aware of the dif ferences in cable. Better RCA’s usually have multiple layers of shielding and/or twisted pair wiring for better
noise rejection. Ask your local dealer for his rec ommendation.
LINE LEVEL INPUT S
Car environments are notorious for poorly insulated wires. This means that his s, engine noise, and elec trical noise can easily be
picked up thro ugh RCA cables if ran incorrectly. To avoid induc ing noise into the system, run the RCA’s away from lar ge wire
looms and electric fans if possible. Always make sure to position your signal cables away from the power wire, preferably on the
opposite side of the vehic le or at least 18” apart. When routing the power wire, use caution around sharp corners or body parts
that may easily cut through the cables.
When connecting the signal cab les, check the balance to the source unit and the amplifier. The cables should be marked: r ed is
right and black or white is usually left. Once you have connected the signal cables to the head unit, slide the unit back into the
dash. Make sure the unit is in securely.
HIGH LEVEL IN PUTS
Please use a high quality line level convertor to conver t the high level outputs from your headunit to low level signals
LEVEL CONTROL
Next to the preamp inputs on the side panel of the amplifier is the level control, commonly referred to as the gain. The gain allows
you to match the output level of your source unit or signal processor to the input level of the amplifier. Matching the input can be
accomplished in three simple steps:
1. Turn gain (level) control to minimum.
2. Turn on the source unit and adjust to 2/3 of max volume while playing music.
3. Adjust the gain control until desired, maximum volume is achi eved without audible disto rtion.
Remember that the gain control is not a volume kno b. I gnoring the thre e steps above may leave you
with damaged sp eakers and possibl y damaged ampli fier(s) .
Master: this setti ng will maintain the same phase as the signal applied to it.
1. Use this setting if the amplifier is not bridged with an other ampli fier.
2. When strapping the amplifiers, use this set ting only on the amplifier that is connected to the head unit.
Slave:
this setting limits the controls of the sec ondary amplifier in a strapped pair.
1. Use this setting only on t he second amplifier in a strapped pair. All crossover, subsonic and level c ontrols of this amplifier will
be bypassed. The amplifier set on Master will then cont rol all the preamp functions for both amplifiers.
SUBSONIC FILTER
The subsonic filter is used to reduc e the amount of low frequency harmonics and/or subsonic n oise picked up in audio systems.
Both of these can be damaging to subwoofers and possibly the amplifier(s). As well, harmonics and subsonic noise can cause
the amplifier(s) to pull excess power from your electrica l system.
This filter is switchable, ON/OFF on BMF25 0M, and BMF500M. All Class D series amplifiers, the subsonic filter is on at all times
and is variable from 15Hz to 40Hz. So what frequency should you set the subs onic filter at? For most applications it is desirable
to leave this between 15Hz an d 30Hz. If you are using a por ted enclosure designed for SPL, yet you are using the system on a
daily basis, a higher filter frequency may be desired. This will allow the enclosure to be tuned higher and reduce the chance of the
woofer to become non-linear and destr oy itself.
“Strapping ” Two amplifiers together
Strapping two like amplifiers together is fairly easy. Study the following instructions as well as the diagrams below to assure proper
connections. If you experience any dif ficulties, please contact Crossfire’s Technical Assistance at tech@crossfirec araudio.com
STRAPPING CIRCU IT (Invert outp ut)
The internal strapping m odule can only be used when a pair of either BMF1000D or BMF1700D are used. Strap ping allows for
the two amplifiers to be run in series and achieve double the output into one lo ad. However, this does c hange the minimum im
pedance stability to 2 o hms. Strapping the amplifiers should only be done if t he proper impedance cannot be achieved with the
amplifiers separated.
It is ver y important to set the Master/Slave control on the amplifier w hether you are strapping or not. If the settings are in t he
wrong position, the amplifier(s) may not work. There are t wo settings for this control: Master and Slave. Use the following to de
termine what position to set your amplifier(s) in. For furthe r reference, please review the drawings following.
BRI DGE SETT INGS AND WIRI NG
It is very important that
a negative of each amplifier
is connected as shown
From Source
INPUT OUTPUT LEVEL
SUBSONIC LPF PWR
REMOTE
SYNC
SPEAKER
MAS/SV
L
BOOST
PHASE
L
R
INPUT OUTPUT LEVEL
SUBSONIC LPF PWR
REMOTE
SYNC
SPEAKE
R
MAS/SV
L
BOOST
PHASE
L
R
Page 7
- 10 - - 11 -
LOW LEV EL I NPUT CON FIGUR ATION S CL ASS A/B LOW LEV EL I NPUT CON FIGUR ATION S CL ASS D
Please note that your am plifier may diff er from those shown o n this page.
SINGLE AMPLIFIE R CONFIGURATION
DUAL AMPLIFIER CON FIGURATION (Using 2 A mplifiers)
This example shows how to use 1 single pre-amp output to run dual amp lifiers by
using the RCA output provided by the Crossfire Class D amplifi ers.
Please note that your am plifier may diff er from those shown o n this page. The follow ing page has ad-
ditional model am plifiers and co nnection diagr ams and configu rations.
2 CH. CONFIGUR ATION
4 CH. WITH (2) RCA I NPUTS CONFIGUR ATION
4 CH. WITH (1) RCA INPUT CONFIG URATION
INPUT OUTPUT LEVEL
6V 0.15V 50Hz 250Hz0
dB12dB
BAS
S
BOOS
T
L
R
BRIDGE
D
SPEAKERS
FREQ.
PWR
- +
LEVEL LEVELINPUT
POWE
R
INPU
TOUTPUT
FREQ.
HPF
LPF FLAT
HPF
LPF FLAT
5
0Hz
6
v
0.15
V
6v0
.15V
2
50H
z
FREQ.
5
0Hz
2
50H
z
FRONT REAR
LEVEL LEVELINPUT
POWE
R
INPU
TOUTPUT
FREQ.
HPF
LPF FLAT
HPF
LPF FLAT
50H
z
6v0.15
V
6v0.15
V
2
50H
z
FREQ.
50H
z
250Hz
FRONT REAR
Use an RCA Y adapter or you can connect
the RCA to the Rear input and connect
another RCA to the Rear output and into
the Front input
INPUT OUTPUT LEVEL
SUBSONIC LPF PWR
REMOT
E
SYNC
SPEAKER
MAS/SV
L
BOOS
T
PHASE
INPUT OUTPUT LEVEL
SUBSONIC LPF PWR
SYNC
SPEAKER
MAS/SVL
BOOS
T
PHASE
INPUT OUTPUT LEVEL
SUBSONIC LPF PWR
SYNC
SPEAKER
MAS/SVL
BOOS
T
PHASE
From Source
Page 8
- 13 -
CRO SSFI RE L IMIT ED WAR RAN TY
This warranty gives you specific legal rights, and you may also have other r ights, which vary from state to state. Thi s warranty
is only valid o n Crossfire products purcha sed in the U.S.A. from an authorized Crossfire d ealer. All Crossfire amplifiers
are warranted to be free from defects in materials and workmanship under normal use and service for a period of (3) years when
the unit is inst alled by an authorized Crossfire de aler. Non -authorized dealer installed products carry a (1) year parts and labor
limited warranty. The extent and conditions of Crossfire’s limited warranty are as foll ows:
i. Crossfire will e ither repair or replace (as its option) any unit which Crossfire has examined and found to be defective
and under warranty, to the original purchas er, provided the defect occ urs within (3) years of the date of purchase when
installed by an authorized Cro ssfire dealer. This warrant y includes both parts and labor and applies to the original pur
chaser only.
ii. Crossfire w ill either repair or replace (at its option) any unit which Crossfire has examined and found to be defective
and under warranty, to the original purchas er, provided the defect occ urs within (1) year of the date of purchase when
the unit is installed by a non- authorized Crossfire dealer. This (1) year warrant y includes both parts and labor and
applies to the original p urchaser only.
iii. This warrant y will be void to any unit found with the original serial number removed, altered or defaced. All units re
ceived by Crossfire for war ranty with their original serial numbers removed will not be repaired and
will be returned to the sen der Freight Collec t.
iv. The provisions of this warranty shall not apply to p roducts used for any industrial, professional or commercial pur
poses or any other uses for whic h it was not designed or intended.
v. This warranty does not cover cost f or removal of product for repair or reinstallation of product after repair, nor does it
cover the cost of returning t he product to Crossfire’s service center for repair.
vi. This warrant y does not apply to repairs or replacements necessitated by any cause beyond the control of Crossfire
Including, but not limited to, any malfunction, defect or failur e caused by or resulting from unauthorized service or parts,
improper maintenance, operatio n contrary to furnished instructions, shipping or transit accidents, inc orrect power line
voltages, fire, flood or any other ac ts of nature, or normal wear and tear.
vii. The foregoin g is in lieu of other expressed warranties and Crossfire does not assume or authorize any party to as
sume for it any other obligation or liabili ty. The durations of any warrantie s, which may be implied by law (including the
warranties of merchant ability and fitness), is limited to the term of this warranty. In no event shall Crossfire be liable for
special, incidental or c onsequential damages arising from obligations under this warranty due to cause beyond its con
trol. Some states do not allow limi tations on how long an implied warranty lasts and/or do not allow the exclusions or
limitation of conse quential damages, so the above limitations and exclusions may not apply to you.
viii. Retur n policy.
Your unit will be serviced free of charge on an in-warranty basis only. If imp roper operation occurs, contact your authorized
Crossfire dealer for assistance with the return and factor y repair of your Crossfire product. If an authorized Crossfire de aler is
not available, the following procedure must be followed: phone us at (972) 570 -0800 or fax in your name, address, telephone
number and the mo del number of the item(s) to be returned to receive a Return Authoriz ation Number to (972) 570-2200. Your
return authorization number must be clearly written on the outside of the packing box returned to Crossfire. All returned produc ts
must be accompanied with a DATED proof of purchase invoice or the product may be subjec t to costs of parts and labor. Return
the unit in the or iginal protective carton or a car ton with ample protection. Please include a brief description of the problem and
send your repair to:
- 12 -
IMP ORTAN T!!
REM EMBE R !!
The majority of failures seen with Class D amplifiers are due to people using them in vehicles without the proper electrical considerations. The c ommon misconception about Class D amplifiers contributes to this problem, since the BMF1000D is Class D
amplifier and very efficient, the misconception is that it doesn’t pull amounts of current. This is partly true. A BMF100 0D is capable
of drawing 120 amps of current at max draw. At 120 amps of current to produce over 1000 watts is very efficient, while some class
A/B amp lifiers need over 200 amps to produce the same power. A normal stock automobile sees it difficultly, 120 amperes is a
very high amount of current and posses a ver y high strain on it’s electrical system.
We at Crossfire strongly suggest using one dedicated, high quality, battery per BMF1000D or per t wo BMF500M amplifiers. We
also recommend upgrading the vehicles alternator w henever possibl e.
It is very impor tant to keep your battery voltage above 11 volts and as c lose to 14.4 volts as possible. Not only do you get mo re
power at 14.4 volts but you are risking serious damage to your amplifier below 11 volts. Ohms law states that current equals power
(watts) divided by voltage. This means that current and voltage are inversely propor tional, in other words as your battery voltage
falls your amplifier has to draw more current to make the same amount of power. At a certain point the amp draws so much current
that damages components in the input section. This is very common in all Class D amplifiers. The solution is to keep your battery
voltage between 12 volts and 14.4 volts. If you follow the tips below you will get the best of most reliable per formance from your
BMF amplifiers.
1. Make sure the automobile has an electrical system that will suppor t the audio systems current draw.
2. Upgrading your alternator for multiple amplifier s is recommended
3. Use at least one (1) high quality battery per BMF1000D or per t wo BMF500M, Two (2) batteries per BMF1700D.
4. For runs of 20ft or less use at least one 4 awg power wire and one 4 awg ground wire per BMF1000D, 4 awg for the BMF500M,
1/0 awg for BMF1700D. If you are using one wire with a distribution block for multiple amps, make sure to use a larger gauge wire
for the main feed.
Be sure to test battery voltage at the amplifier terminals white th e system is playing at high volume. Make sure this reading stays
as close to 14.4 volts as possible, if this measure is below 12 volts see above tips or email
Crossfire Technical Support at tech@ crossfirecaraudio.com.
Page 9
Te lep hon e: (9 7 2) 57 0- 08 0 0 | Fa x: (97 2) 570 -2 2 00
ww w.c r os sfi re ca ra udi o. co m
Loading...