Rockford Fosgate 250 2-Channel, 360 2-Channel, Owner's manual

Installation
and
Operation
Power 250 2-Channel
Power 360 2-Channel
Power 400 4-Channel
Power 500 2-Channel
Power 600 5-Channel
Power 800 2-Channel
Power 800 4-Channel
Power 1000 2-Channel
Páginas de Referencia para la Instalación
Schéma d’Installation
Installations Beiblatt
Istruzioni di Installation
Power Amplifier

Sections marked
TROUBLESHOOTING
include recommendations for
curing installation problems
Sections marked
INSTALLATION
include “slam dunk”
wiring connections
GETTING STARTED
Welcome to Rockford Fosgate! This manual is designed to provide
information for the owner, salesperson and installer. For those of you
who want quick information on how to install this product, please turn
to the Installation Section of this manual or refer to the icons listed
below. Other information can be located by using the Table of
Contents. We, at Rockford Fosgate, have worked very hard to make
sure all the information in this manual is current. But, as we are con-
stantly finding new ways to improve our product, this information is
subject to change without notice.
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Visit our website for the latest information on all Rockford products.
If, after reading your manual, you still have questions regarding this product, we rec-
ommend that you see your Rockford Fosgate dealer. If you need further assistance,
you can call us direct at 1-800-669-9899. Be sure to have your serial number, model
number and date of purchase available when you call.
The serial number can be found on the outside of the box. Please record it in the
space provided below as your permanent record. This will serve as verification of
your factory warranty and may become useful in recovering your amplifier if it is
ever stolen.
Serial Number: __________________________________
Model Number:__________________________________

Dear Customer,
Congratulations on your purchase of the world's finest brand of car audio
amplifiers. At Rockford Fosgate we are fanatics about musical reproduction
at its best, and we are pleased you chose our product. Through years of
engineering expertise, hand craftsmanship and critical testing procedures,
we have created a wide range of products that reproduce music with all the
clarity and richness you deserve.
For maximum performance we recommend you have your new Rockford
Fosgate product installed by an Authorized Rockford Fosgate Dealer, as we
provide specialized training through Rockford Technical Training Institute
(RTTI).
Please read your warranty and retain your receipt and original carton for
possible future use.
Great product and competent installations are only a piece of the puzzle
when it comes to your system. Make sure that your installer is using 100%
authentic installation accessories from Connecting Punch in your installa-
tion. Connecting Punch has everything from RCA cables and speaker wire
to Power line and battery connectors. Insist on it! After all, your new system
deserves nothing but the best.
To add the finishing touch to your new Rockford Fosgate image order your
Rockford wearables, which include everything from T-shirts and jackets to
hats and sunglasses.
To get a free brochure on Rockford Fosgate products and Rockford acces-
sories, in the U.S. call 480-967-3565 or FAX [phone]. For all other
countries, call +001-480-967-3565 or FAX [phone].
PRACTICE SAFE SOUND™
CONTINUOUS EXPOSURE TO SOUND PRESSURE LEVELS OVER 100dB
MAY CAUSE PERMANENT HEARING LOSS. HIGH POWERED AUTOSOUND
SYSTEMS MAY PRODUCE SOUND PRESSURE LEVELS WELL OVER 130dB.
USE COMMON SENSE AND PRACTICE SAFE SOUND.

Specifications
POWER 250 POWER 360 POWER 400 POWER 500 POWER 600.5 POWER 800 POWER 800 POWER 1000
2-channel 2-channel 4-channel 2-channel 5-channel 2-channel 4-channel 2-channel
Dynamic Power Rating
(IHF-202 Standard) - Measured at 14.4 Volts Front/Rear + Subwoofer
Bridged into a 4ΩLoad 3
20 Watts x 1 481 Watts x 1 232 Watts x 2 710 Watts x 1 232 Watts x 2 + —960 Watts x 1 525 Watts x 2 1460 Watts x 1
Per channel into a 2ΩLoad 160 Watts x 2 242 Watts x 2 127 Watts x 4 330 Watts x 2 120 Watts x 4 + 240 Watts x 1 480 Watts x 2 270 Watts x 4 730 Watts x 2
Per channel into a 4ΩLoad 100 Watts x 2 154 Watts x 2 84 Watts x 4 210 Watts x 2 75 Watts x 4 + 115 Watts x 1 240 Watts x 2 150 Watts x 4 450 Watts x 2
Continuous Power Rating
(Competition Standard)
Measured at 13.8 Battery Volts
RMS continuous power / channel, 62.5 Watts x 2 90 Watts x 2 50 Watts x 4 125 Watts x 2 50 Watts x 4 + 100 Watts x 1 200 Watts x 2 100 Watts x 4 250 Watts x 2
both channels driven into a 4Ω
load from 20Hz to 20kHz with
<
0.05% Total Harmonic Distortion (THD)
RMS continuous power / channel, 125 Watts x 2 180 Watts x 2 100 Watts x 4 250 Watts x 2 100 Watts x 4 + 200 Watts x 1 400 Watts x 2 200 Watts x 4 500 Watts x 2
both channels driven into a 2Ω
load from 20Hz to 20kHz, with
<
0.1% Total Harmonic Distortion (THD)
RMS continuous power bridged 250 Watts x 1 360 Watts x 1 200 Watts x 2 500 Watts x 1 200 Watts x 2 + —800 Watts x 1 400 Watts x 2 1000 Watts x 1
into a 4Ωload from 20Hz to
20kHz, with
<0.1% Total Harmonic
Distortion (THD)
Signal-to-Noise Ratio (A-weighted) >100dB >100dB >100dB >100dB >100dB >100dB >100dB >100dB
Crossover Slope (Butterworth) 24dB/octave 24dB/octave 24dB/octave 24dB/octave 24dB/octave 24dB/octave 24dB/octave 24dB/octave
Crossover Frequency 50Hz –210Hz 50Hz –210Hz 50Hz –210Hz 50Hz –210Hz 50Hz –210Hz 50Hz –210Hz 50Hz –210Hz 50Hz –210Hz
Specifications are subject to change without notice.

POWER 250 POWER 360 POWER 400 POWER 500 POWER 600.5 POWER 800 POWER 800 POWER 1000
2-channel 2-channel 4-channel 2-channel 5-channel 2-channel 4-channel 2-channel
Dimensions (end caps installed) 2.4" (6.1cm) H 2.4" (6.1cm) H 2.4" (6.1cm) H 2.4" (6.1cm) H 2.4" (6.1cm) H 2.4" (6.1cm) H 2.4" (6.1cm) H 2.4" (6.1cm) H
9.9" (25.06cm) W 9.9" (25.06cm) W 9.9" (25.06cm) W 9.9" (25.06cm) W 9.9" (25.06cm) W 9.9" (25.06cm) W 9.9" (25.06cm) W 9.9" (25.06cm) W
11.4" (28.88cm) L 12.4" (31.42cm) L 13.4" (33.96cm) L 13.4" (33.96cm) L 18.4" (46.74cm) L 18.4" (46.74cm) L 18.4" (46.74cm) L 18.4" (46.74cm) L
Heatsink Type (internal use only) #2 #3 #4 #4 #4 #6 #6 #6
Frequency Response (±0.5dB) 20Hz - 20kHz 20Hz - 20kHz 20Hz - 20kHz 20Hz - 20kHz 20Hz - 20kHz 20Hz - 20kHz 20Hz - 20kHz 20Hz - 20kHz
Bandwidth (±3dB) 20Hz - 200kHz 20Hz - 200kHz 20Hz - 200kHz 20Hz - 200kHz 20Hz - 200kHz 20Hz - 200kHz 20Hz - 200kHz 20Hz - 200kHz
Damping Factor @ 4Ω>200 >200 >200 >200 >200 >200 >200 >200
(at output connector)
Slew Rate 30 Volts/ ms 30 Volts/ ms 30 Volts/ ms 30 Volts/ ms 30 Volts/ ms 30 Volts/ ms 30 Volts/ ms 30 Volts/ ms
IM Distortion (IHF) <0.05% <0.05% <0.05% <0.05% <0.05% <0.05% <0.05% <0.05%
Source Unit Compatibility 17V max. (RCA) 17V max. (RCA) 17V max. (RCA) 17V max. (RCA) 17V max. (RCA) 17V max. (RCA) 17V max. (RCA) 17V max. (RCA)
(+15dB gain overlap)
Input Sensitivity (+0dB gain overlap) 250mV~4V (RCA) 250mV~4V (RCA) 250mV~4V (RCA) 250mV~4V (RCA) 250mV~4V (RCA) 250mV~4V (RCA) 250mV~4V (RCA) 250mV~4V (RCA)
Protection NOMAD - Internal analog-computer output protection circuitry limits power in case of overload. Thermal switch shuts down the amplifier in case of overheating.
Battery Fuse Rating 30A 40A 50A 50A 50A 60A* 60A* 2-50A or 1-100A*
(External to Amplifier)
Fuse Type ATC ATC AGU AGU AGU AGU AGU 2-AGU OR 1- ANL
Equalization (45Hz Punch Bass) Variable Variable Rear Variable Variable Variable Variable Rear Variable Variable
(0 to +18dB) (0 to +18dB) (0 to +18dB) (0 to +18dB) (0 to +18dB) (0 to +18dB) (0 to +18dB) (0 to +18dB)
Input Impedance 20k ohms 20k ohms 20k ohms 20k ohms 20k ohms 20k ohms 20k ohms 20k ohms
* recommended fuse not supplied with amplifier
Specifications are subject to change without notice.
Specifications

Table of Contents
Specifications.............................................................................................. i
Introduction ................................................................................................1
Power Amplifier Accessory Pack....................................................................1
Feature Chart ..............................................................................................2
Design Features ..........................................................................................3
Installation Considerations ............................................................................8
Mounting Location ......................................................................................9
Battery and Charging ................................................................................10
Wiring the System......................................................................................10
Using Passive Crossovers............................................................................12
Table of Component Values ........................................................................13
Installation................................................................................................14
Operation..................................................................................................23
System Diagrams ......................................................................................26
Troubleshooting ........................................................................................30
Dynamic Power Measurements....................................................................32
Warranty Information ................................................................................34
International Information ............................................................................35

– 1 –
Introduction
Rockford engineers designed the Power series amplifiers to withstand the
rugged automotive environment while delivering superior sound quality in
a flexible, reliable, and efficient package. TRANS•ana is a low voltage cir-
cuit in the preamp stage lets the music sound crystal clear and very real,
even when played at high volume levels. This is matched with TOPAZ, a
unique grounding circuit used to eliminate noise problems associated with
car audio systems and their installation. Flexibility is accomplished with the
use of a built-in variable crossover. The use of a protection circuit called
NOMAD, along with MOSFET and DSM (Discrete Surface Mount) technol-
ogies improve amplifier efficiency. The result of these components give the
Power amplifier awesome sound quality in a “Bullet Proof”package.
Explanations of these technologies, most of which are exclusively designed
and patented by Rockford, are described in the Technical Design Features.
Power Amplifier Accessory Pack
The accessory pack shipped with the Power amplifiers includes the mount-
ing hardware necessary to secure the amp to the vehicle.
Installation & Operation Manual
Punch Verification Certificate
(4) Amplifier mounting screws (#8 x 3/4" Phillips)
(4) Speaker/Power connector set screws (3/32" Allen)
(4) Endbell mounting screws (9/64" Allen)
(1) Allen wrench (3/32")
(1) Allen wrench (9/64")
(1) Inline fuseholder (Power 250, Power 360 & Power 400 amps)
(1) AGU 30 amp fuse (Power 250 2-channel amp)
(1) AGU 40 amp fuse (Power 360 2-channel amp)
(1) AGU 50 amp fuse (Power 400 4-channel & Power 600 5-channel amps)
(1) Remote Punch Bass (replacement part #WP-2429)
(1) 15' Remote Punch Bass cable (replacement part #CC-2421)
(2) Remote Punch Bass bracket screws (4 x 7/16" Phillips)
NOTE: Refer to the specifications section for recommended fuse sizes on
the Power 800 2-channel, Power 800 4-channel & Power 1000 2-channel
amps.

–2 –
POWER AMPLIFIER MODEL Power Power Power Power Power Power Power Power
250 360 400 500 600 800 800 1000
# of CHANNELS 224 25242
Stable Into: (stereo/mono) 2Ω/4Ω2Ω/4Ω2Ω/4Ω2Ω/4Ω2Ω/4Ω2Ω/4Ω2Ω/4Ω2Ω/4Ω
CIRCUITRY1
TRANS•ana –circuit topology x x x x x x x –
TRANS•nova –patented circuit topology2––– ––––x
DIAMOND –patented MOSFET driver stage3––– ––––x
Class-G –high efficiency topology ––– –––––
MEHSA –heat dissipating technology x x x x xxxx
TOPAZ –patented noise eliminating circuitry4xxx xxxxx
DSM –discrete surface mount x x x x xxxx
MOSFETs –power supply & output devices x x x x xxxx
NOMAD –protection circuit x x x x xxxx
FEATURES
Die Cast Heatsink x x x x xxxx
Hi-Level Inputs –for factory radios ––– –––––
RCA Inputs –for aftermarket radios x x x x xxxx
Input Switches –eliminates “Y”adaptors ––x–––x –
Pass-Thru –feeds signal to aux. amp x x x x xxxx
Pwr/Spk Screw Terminals ––– –––––
Pwr/Spk Block Terminals x x x x xxxx
4 Gauge PWR/GND x x x x xxxx
Variable Punch Bass (0dB ~+18dB @ 45Hz) Remote Remote Remote Rear Remote Remote Remote Remote Remote
Rear Rear
Variable Xover (50Hz ~ 210Hz) HP/FULL/LP
5
HP/FULL/LP
5
HP/FULL/LP
5
HP/FULL/LP
5
HP/FULL/LP
5
HP/FULL/LP
5
HP/FULL/LP
5
HP/FULL/ LP
5
Crossover Slope (Butterworth) 24dB 24dB 24dB 24dB 24dB 24dB 24dB 24dB
Phase Warp ––– ––––x
1Additional information on features, specifications and system designs can be found at: www.rockfordfosgate.com 2Trans•nova is patented under "U.S. Patent No. 4,467,288"
3DIAMOND is patented under "U.S. Patent No. 5,673,000" 4TOPAZ is patented under "U.S. Patent No. 5,751,823"
5HP = 24dB/octave High-Pass / LP = 24dB/octave Low-Pass / FULL = Full Range
Power Amplifier Feature Chart

–3 –
Design Features
1. Cast Aluminum Heatsink –The cast aluminum heatsink of the Power amplifier
dissipates heat generated by the amplifier's circuitry. The inherent advantage of
casting provides a 30% improvement of cooling over conventional extrusion
heatsink designs.
2. Speaker/Power Terminals –The heavy duty, gold-plated terminal block con-
nectors (+ and –) will accept 4 gauge cable and are immune to corrosion that
can cause signal degradation.
3. REM Terminal –This spade terminal is used to remotely turn on and turn off the
amplifier when +12V DC is applied.
4. Signal Input Switch (Power 400, Power 800 4-channel & 600 5–channel
amplifiers) –This switch allows the amplifier to be driven with either 2 or 4
pairs of inputs.
5. RCA Input Jacks –The industry standard RCAjacks provide an easy connection
for signal level input. They are gold-plated to resist the signal degradation
caused by corrosion.
6. RCA Pass-Thru Jacks –The Pass-Thru provides a convenient source for daisy-
chaining an additional amplifier without running an extra set of RCA cables
from the front of the vehicle to the rear amplifier location.
7. Gain Control –The input gain control is preset to match the output of most
source units. It can be adjusted to match output levels from a variety of source
units.
8. Remote Punch Bass –The Punch Bass helps correct for acoustical deficiencies
in the listening environment by helping reproduce full range sound without
adding excessive boost. The Punch Bass control is a narrow band adjustment
centered at 45Hz variable from 0dB to +18dB. Connection is made with a
cable using RJ-45 and can be installed under the dash for remote control access.
9. Internal Crossover –The internal crossover is a 24dB/octave Butterworth filter
selectable for High-Pass (HP), Full Range (FULL), or Low-Pass (LP) operation
variable from 50Hz to 210Hz.
10. LED Power Indicator –The LED illuminates when the unit is turned on.
11. Phase Warp (Power 1000 2-channel amplifier) –The phase warp is a variable
control used to adjust the phase of the output signal relative to the phase of the
input signal. The phase warp is most noticable when the system is playing a
sine wave (test tone). When used with the proper test equipment, this feature
can increase the relative SPL in a system.

–4 –
Power 250
2-channel
2
2
1
8
9
9
5
2
2
7
7
3
6
1
0
Power 360
2-channel
Speaker
+ L -
Crossover Frequency
Left Gain Input
Pass-Thru
LR
LR
Right
Gain Remote
Punch Bass
HP-Full-LP
Crossover
Speaker
+ R -
65
80
55
50
110
210 Hz
145
190
REM
B+ GND
2
10
52
9
8
77
9
2
6
1
3

–5 –
Power 400
4-channel
Front
Crossover
HP-Full-LP
4/2
Input Front
Gain Front
Crossover
Frequency
65
80
55
50
110
210 Hz
145
190
Front Pass-Thru Rear
RR
LL
Rear
Crossover
Frequency
65
80
55
50
110
210 Hz
145
190
Rear
Gain
Rear
Crossover
HP-Full-LP Rear
Remote
Punch
Bass
LR+ LR- RR+ RR- B+ GND LF- LF+ RF+RF-
REM LED
10 2
2
6
4571
2
98
79
3
99
Power 500
2-channel
Speaker
+ L -
Crossover Frequency
Left Gain Input
Pass-Thru
LR
LR
Right
Gain Remote
Punch Bass
HP-Full-LP
Crossover
Speaker
+ R -
65
80
55
50
110
210 Hz
145
190
REM
B+ GND
2
10
52
9
8
77
9
2
6
1
3

–6 –
Power 800
2-channel
Speaker
+ L -
Crossover Frequency
Left Gain Input
Pass-Thru
LR
LR
Right
Gain Remote
Punch Bass
HP-Full-LP
Crossover
Speaker
+ R -
65
80
55
50
110
210 Hz
145
190
REM
B+ GND
52
9
8
77
9
2
6
1
10
3
2
Power 600
5-channel
549 8 99
10 1
Sub LP
Crossover
Frequency
Sub
Gain
65
80
55
50
110
210 Hz
145
190
6/4/2
Input
Sub Rear Front
R
L
R
L
Sub
Punch
Bass
Rear
Crossover
Frequency
Rear
Punch
Bass
Rear
Gain
Front
Crossover
Frequency
Front
Punch
Bass
Front
Gain
HP-Full-LP
Front
Crossover
HP-Full-LP
Rear
Crossover
65
80
55
50
110
210 Hz
145
190
LR+
LR-
RR+
RR-
RF- LF+ Sub-
RF+ LF- Sub+
REM
B+ GND
LR+
LR-
RR+
RR-
RF- LF+ Sub-
RF+ LF- Sub+
10 23
27
7
7
Remote
Punch Bass
9

–7 –
Power 800
4-channel
1
2
6
Front
Crossover
HP-Full-LP
4/2
Input Front
Gain Front
Crossover
Frequency
65
80
55
50
110
210 Hz
145
190
Front Pass-Thru Rear
RR
LL
Rear
Crossover
Frequency
65
80
55
50
110
210 Hz
145
190
Rear
Gain
Rear
Crossover
HP-Full-LP Rear
Remote
Punch
Bass
7
7
LR+ LR- RR+ RR- B+ GND LF- LF+ RF+RF-
REM
10
899 4 59 9
3
2 2
21
2
65
80
55
50
110
210 Hz
145
190
8 99 572 7
36
10
11
B+ GND
REM
HP–Full–LP
Crossover
Input
Pass-Thru
LR
LR
Crossover
Frequency
Speaker
+ L - Speaker + R -
Right
Gain
Left
Gain
Remote
Punch Bass
Phase
Warp
Power 1000
2-channel

–8 –
Installation Considerations
This is a list of tools you will need for installing the Power amplifier:
•Voltmeter •Wire strippers
•Electric hand drill w/assorted bits •Battery post wrench
•17' (5 m) Red Power Wire •Wire cutters
•12' (4 m) Remote Turn-On Wire •Assorted connectors
•1.5' (45 cm) Black Grounding Wire •Wire crimpers
This section focuses on some of the vehicle considerations for installing
your new Power amplifier. Checking your battery and present sound sys-
tem, as well as pre-planning your system layout and best wiring routes, will
save installation time. When deciding how to lay out your new system, be
sure that each component will be easily accessible for making adjustments.
Before beginning any installation, be sure to follow these simple rules:
1. Be sure to carefully read and understand the instructions before
attempting to install the amplifier.
2. For safety, disconnect the negative lead from the battery prior to begin-
ning the installation.
3. For easier assembly, we suggest you run all wires prior to mounting
your amplifier in place.
4. Route all of the RCA cables close together and away from any high
current wires.
5. Use high quality connectors for a reliable installation and to minimize
signal or power loss.
6. Think before you drill! Be careful not to cut or drill into gas tanks, fuel
lines, brake or hydraulic lines, vacuum lines or electrical wiring when
working on any vehicle.
7. Never run wires underneath the vehicle. Running the wires inside the
vehicle provides the best protection.
8. Avoid running wires over or through sharp edges. Use rubber or plas-
tic grommets to protect any wires routed through metal, especially the
firewall.
9. ALWAYS protect the battery and electrical system from damage with
proper fusing. Install a fuseholder and appropriate fuse on the +12V
power wire within 18”(45 cm) of the battery terminal.
10. When grounding to the chassis of the vehicle, scrape all paint from the
metal to ensure a good, clean ground connection. Grounding connec-
tions should be as short as possible and always be connected to metal
that is welded to the main body, or chassis, of the vehicle.

–9 –
Mounting Location
The mounting location and position of your amplifier will have a great effect
on its ability to dissipate the heat generated during normal operation. The
design of our cast aluminum heatsink serves to easily dissipate the heat gen-
erated over a wide range of operating conditions. However, to maximize the
performance of your amplifier, care should be taken to ensure adequate
ventilation.
Trunk Mounting
Mounting the amplifier vertically on a surface with the fin grooves running
up and down will provide the best cooling of the amplifier.
Mounting the amplifier on the floor of the trunk will work but provides less
cooling capability than vertical mounting.
Mounting the amplifier upside down to the rear deck of the trunk will not
provide proper cooling and will severely affect the performance of the
amplifier and is strongly not recommended.
Passenger Compartment Mounting
Mounting the amplifier in the passenger compartment will work as long as
you provide a sufficient amount of air for the amplifier to cool itself. If you
are going to mount the amplifier under the seat of the vehicle, you must
have at least 1" (2.54cm) of air gap around the amplifier's heatsink.
Mounting the amplifier with less than 1" (2.54cm) of air gap around the
amplifier's heatsink in the passenger compartment will not provide proper
cooling and will severely affect the performance of the amplifier and is
strongly not recommended.
Engine Compartment Mounting
Rockford Fosgate amplifiers should never be mounted in the engine com-
partment. Not only will this void your warranty but could create an embar-
rassing situation caused by the ridicule from your friends.

–10 –
Battery and Charging
Amplifiers will put an increased load on the vehicle's battery and charging
system. We recommend checking your alternator and battery condition to
ensure that the electrical system has enough capacity to handle the
increased load of your stereo system. Stock electrical systems which are in
good condition should be able to handle the extra load of any Rockford
amplifier without problems, although battery and alternator life can be
reduced slightly. To maximize the performance of your Rockford Fosgate
amplifier, we suggest the use of a heavy duty battery and an energy storage
capacitor.
Wiring the System
CAUTION: Avoid running power wires near the low level input cables, antenna,
power leads, sensitive equipment or harnesses. The power wires carry sub-
stantial current and could induce noise into the audio system.
1. Plan the wire routing. Take care when running signal level RCA cables
to keep them close together but isolated from the amplifier's power
cables and any high power auto accessories, especially electric motors.
This is done to prevent coupling the noise from radiated electrical fields
into the audio signal. When feeding the wires through the firewall or
any metal barrier, protect them with plastic or rubber grommets to pre-
vent short circuits. Leave the wires long at this point to adjust for a pre-
cise fit at a later time.
2. Prepare the Power cable for attachment
to the amplifier by stripping 5/8" of insu-
lation from the end of the wire. The use
of 8 gauge power cable can interfere
with the installation of the end caps.
Proper wire dress can prevent this from
occurring. To prevent the wire from fray-
ing, strip the insulation at a 45°angle.
Insert the bared wire into the B+ terminal
with the long side of the insulation on the top. Bend the cable down at
a 90°angle. Tighten the set screw to secure the cable in place.
3. Strip 3/8" from the battery end of the power cable and crimp a large ring
terminal to the cable. Use the ring terminal to connect to the battery
positive terminal. Do not install the fuse at this time.
>< 5/8"
INSULATION
STRIP WIRE
>
>
AMP
>

–11 –
4. Prepare a length of cable to be used for the ground connection. Strip
5/8" of insulation from the end of the cable as described above and
connect to the appropriate terminal of the amplifier. Prepare the chas-
sis ground by scraping any paint from the metal surface and thorough-
ly clean the area of all dirt and grease. Strip the other end of the wire
and attach a ring connector. Fasten the cable to the chassis using a non-
anodized screw and a star washer.
5. Prepare the REM turn-on wire for connection to the amplifier by strip-
ping 1/4" of insulation from the wire end and crimping an insulated
spade connector in place. Slide the connector over the REM terminal
on the amplifier. Connect the other end of the REM wire to a switched
12 volt positive source. The switched signal is usually taken from the
source unit's auto antenna or the accessory lead. If the source unit does
not have these outputs available, the recommended solution is to wire
a mechanical switch in line with a 12 volt source to activate the ampli-
fier.
6. Securely mount the amplifier (with supplied screws) to the vehicle or
amp rack. Be careful not to mount the amplifier on cardboard or plas-
tic panels. Doing so may enable the screws to pull out from the panel
due to road vibrations or sudden vehicle stops.
7. Determine the number of inputs needed to drive the amplifier and
move the input switch to the desired setting (Power 400 & Power 800
4-channel amplifiers only.).
8. Connect the source signal to the amplifier by plugging the RCA cables
into the input jack(s) at the amplifier.
9. Connect the speakers. Strip the speaker wires 5/8" and insert into the
appropriate terminal on the amplifier. Insert the bared wire into the
speaker terminal and tighten the set screw to secure into place. Be sure
to maintain proper speaker polarity. DO NOT chassis ground any of
the speaker leads as unstable operation may result.
10. Perform a final check of the completed system wiring to ensure that all
connections are accurate. Check all power and ground connections for
frayed wires and loose connections which could cause problems from
road vibrations.

–12 –
Using Passive Crossovers
A passive crossover is a circuit that uses capacitors and/or coils
and is placed on speaker leads between the amplifier and speak-
er. The crossover delegates a specific range of frequencies to the speaker
for optimum driver performance. A crossover network can perform one of
three functions: High-Pass (capacitors), Low-Pass (inductors or coils) and
Bandpass (combination of capacitor and coil).
The most commonly used passive crossover networks are 6dB/octave sys-
tems. These are easy to construct and require one component per filter.
Placing this filter in series with the circuit will reduce power to the speak-
er by 6dB/octave above or below the crossover point depending on
whether it is a high-pass or low-pass filter. More complex systems such as
12dB/octave or 18dB/octave can cause impedance problems if not profes-
sionally designed.
Passive crossovers are directly dependent upon the speaker's impedance
and component value for accuracy. When passive crossover components
are used in multiple speaker systems, the crossover's effect on the overall
impedance should be taken into consideration along with the speaker's
impedance when determining amplifier loads. CAUTION: The Power
amplifiers are not recommended for impedance loads below 2Ωstereo
and 4Ωbridged (mono) loads.
I
N
S
T
A
L
L
A
T
I
O
N
+ -
+ -

–13 –
Table of Crossover Component Values
6dB/Octave Low-Pass 6dB/Octave High-Pass
Freq.
Hertz Speaker Impedance
80 4.1mH 1000µF 8.2mH 500µF 16mH 250µF
100 3.1mH 800µF 6.2mH 400µF 12mH 200µF
130 2.4mH 600µF 4.7mH 300µF 10mH 150µF
200 1.6mH 400µF 3.3mH 200µF 6.8mH 100µF
260 1.2mH 300µF 2.4mH 150µF 4.7mH 75µF
400 .8mH 200µF 1.6mH 100µF 3.3mH 50µF
600 .5mH 136µF 1.0mH 68µF 2.0mH 33µF
800 .41mH 100µF .82mH 50µF 1.6mH 26µF
1000 .31mH 78µF .62mH 39µF 1.2mH 20µF
1200 .25mH 66µF .51mH 33µF 1.0mH 16µF
1800 .16mH 44µF .33mH 22µF .68mH 10µF
4000 .08mH 20µF .16mH 10µF .33mH 5µF
6000 51µH14µF .10mH 6.8µF .20mH 3.3µF
9000 34µH 9.5µF68µH 4.7µF .15mH 2.2µF
12000 25µH 6.6µF51µH 3.3µF 100µH 1.6µF
2 OHMS 8 OHMS
4 OHMS
LC L CL C
LC
L = Low-Pass (Inductor)
C = High-Pass (Capacitor)
For more information, see your Authorized Rockford Fosgate Dealer.

Installation
Power 250 2-channel Power 500 2-channel
Power 360 2-channel Power 800 2-channel
–14 –
RCA Input
Speaker
+ L -
Crossover Frequency
Left Gain Input
Pass-Thru
LR
LR
Right
Gain Remote
Punch Bass
HP-Full-LP
Crossover
Speaker
+ R -
65
80
55
50
110
210 Hz
145
190
4Ωmin.
+ -
REM
LED
Connect to remote
turn-on lead of
source unit Connect to chassis
ground of vehicle*
Less than 18"
Connect to B+ of battery
with appropriate fuse
*Keep grounds as short as possible
+ -
B+ GND
•RCA Inputs connect to both left and right channels
•Gain for left and right channels are set equally to balance the subwoofer
•Speaker Impedance should be 4Ωminimum
•Variable Crossover can be set to High-Pass (HP), Low-Pass (LP) or
Full Range (FULL)
I
N
S
T
A
L
L
A
T
I
O
N
+ -
+ -
Power 250 Power 360 Power 500 Power 800
2-channel 2-channel 2-channel 2-channel
Power Connections
Bridged/Mono Mode Power 250 Power 360 Power 500 Power 800
2-channel 2-channel 2-channel 2-channel