Dear Customer,
Congratulations on your purchase of America’s finest brand of car audio
amplifiers. At Rockford Fosgate we are committed to 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.
To add the finishing touch to your new Rockford Fosgate image order your
Rockford accessories, which include everything from T-shirts and jackets to
hats and sunglasses.
To get a free brochure on Rockford Fosgate products and Rockford accessories, please call 1-800-366-2349 or FAX 1-602-894-1528 in the U.S. For
Canada, call Korbon Trading at 905-567-1920. For International orders FAX
+001-1-602-967-8132 or call +001-1-602-967-3565.
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.
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 become
useful in recovering your amplifier if it is ever stolen and serve as verification of your factory warranty.
Serial Number: ____________________
Model Number:____________________
Dynamic Power Rating (IHF 202 Standard) - Measured at 14.4 Voltage
Bridged/Mono into a 4Ω Load90 Watts180 Watts180 Watts x 2
Per channel into a 2Ω Load45 Watts 90 Watts 90 Watts x 4
Per channel into a 4Ω Load30 Watts 60 Watts 60 Watts x 4
Continuous Power Rating (IASCA Standard) - Measured at 12.6 Battery Voltage
RMS continuous power per channel, all channels
driven into a 4Ω load from 20 to 20,000 Hz with less
than 0.08% Total Harmonic Distortion (THD)15 Watts 30 Watts 30 Watts x 4
RMS continuous power per channel, all channels
driven into a 2Ω load from 20 to 20,000 Hz, with less
than 0.3% Total Harmonic Distortion (THD)30 Watts 60 Watts 60 Watts x 4
RMS continuous power bridged/mono into a 4Ω load
from 20 to 20,000 Hz with less than 0.3% Total
See Appendix A - Dynamic Power Measurements for information on these specifications.
Harmonic Distortion (THD)60 Watts120 Watts120 Watts x 2
1
– 1 –
High-Pass, Low-Pass and Full Range
Series 1 2300Series 1 2600xSeries 1 4600x
Signal-to-Noise RatioOver 105 dB A weighted
Bandwidth10 Hz to 100 kHz ± 3dB
Damping Factor @ 4ΩAt output connector - Over 200
Frequency Response20 Hz to 20 kHz ± 0.5dB
IM Distortion (IHF)Less than 0.05%
Input Impedance20k ohms
Input Sensitivity(250 mV - 1 Volt)
ProtectionInternal analog-computer output protection circuitry limits power in case of
– 2 –
5.1” (12.95cm) L6.1” (15.49cm) L9.1” (23.11cm) L
2” (5.08cm) H2” (5.08 cm) H2” (5.08 cm) H
overload. Thermal switch shuts down the amplifier in case of overheating.
Specifications subject to change without notice.
Crossover Card N/A 12 dB/octave with selectable
Battery Fusing Rates10 Amps20 Amps30 Amps
(External to Amplifier)
Fuse Type ATC ATC ATC
Dimensions7.9” (20.07cm) W7.9” (20.07 cm) W7.9” (20.07cm) W
INTRODUCTION
This manual provides information on the features, installation and
operation of the Series 1 2300, 2600x and 4600x Amplifiers. We
suggest you save this manual for future reference.
We strongly recommend you have your Authorized Rockford Fosgate
Dealer and Service Center install your new Series 1 amplifier. If you
do choose to install your Series 1 amplifier yourself, please be sure to
read the entire manual before beginning.
OPERATING FEATURES
The Series 1 stereo power amplifiers provide state-of-the-art sound in
cars, vans, boats, or wherever a high current 12 volt power source is
available. Features include:
Discrete Surface Mount Technology – a manufacturing method that
allows the packaging of complex circuitry in small areas, reducing
noise and crosstalk for lower distortion.
Active Electronic Crossover Module – built into the 2600x and 4600x
features 12dB/octave Butterworth filters. The independent crossover
modes in these plug-in modules allow for various configuration
possibilities.
N-Type V-FET Output Drive Circuitry– delivers music with lower
noise and distortion while maintaining a higher slew rate, increased
efficiency and higher power output capability than most amplifiers of
this class.
High Current/High Voltage Output – delivers the power needed for
all listening levels and music frequencies to hear every note.
Pulse Width Modulated (PWM) DC/DC Non-Regulated Power
Supply – assures wider dynamic headroom than the more common
regulated power supplies.
High or Low Level Adjustable Input Sensitivity – permits maximum
compatibility with source units. This allows adjustment of the input
sensitivity level of the power amplifier for RCA (preamp level) or
speaker (high level) inputs.
Real Time Power Protection (R.T.P.P.) – allows for the greatest power
output under all load conditions. When output reaches an unsafe
level it will be reduced, unlike current limiting which often causes
premature protection or failure to protect at all.
– 3 –
Gold-Plated Connectors – of high quality to provide lower resistance
and better reliability.
Series 1 Housing – The extruded aluminum heatsink design of the
Series 1 was designed for high performance cooling.
DESIGN FEATURES
Input/LED Side
3.
2.
1.
4.
for 4600x model
1. Low Level RCA Input Connectors
The amplifier’s signal input female RCA pin jacks should be
connected to the source unit’s signal outputs with high quality
RCA cables. The connectors are gold plated to eliminate the
possibility of corrosion that can cause signal deterioration.
2. High Level Speaker Input Connectors
These connectors are used to connect to a source unit that does
not provide low level RCA outputs. This connector accepts 1/8"
spade lugs. Do not attempt to solder wires directly to this
connector.
3. LED Power Indicator
The LED illuminates when the unit is in operation.
4. Input Gain Control
This control is factory preset to 500 millivolts to match most radios
and is variable from 250 millivolts to one volt.
(More than likely
it will not need adjusting.)
If just a little movement of the volume control from the source unit
drives the amplifier into distortion, reduce the input gain control
so that the distortion doesn’t start until the source unit volume
control is at about 3/4 of its rotation.
– 4 –
Power/Speaker Side
GNDAPB+
+R– +L– – R+ – L+
Bridged
–
Bridged
+
–+
for 4600x model
5. Power/Speaker Connectors
The gold-plated terminal block connectors are:
GNDSupplies ground to the amplifier.
APThe amplifier is turned on by connecting the remote turn-
on wire to the source unit's “Auto Antenna” or remote
turn-on lead, either of which should go to +12 volts when
the source unit is activated.
B+Supplies power to the amplifier.
+R–Connect the Right and Left channel outputs to the
+L–
speakers.
The terminal block connector accepts wire sizes from 10 gauge
to 20 gauge. *
Spade connectors are not needed because of the design of the
connector. The installer should be careful not to allow wires to
fray or touch. The recommended strip length is 1/4" (.635cm).
*Rockford Fosgate’s Perfect Interface line of accessories includes high
quality power and speaker wire, gold-plated RCA interconnecting cables
and other products to complete your installation. Ask your Authorized
Rockford Fosgate Dealer about Perfect Interface.
– 5 –
INSTALLATION CONSIDERATIONS
This section focuses on some of the vehicle considerations for
installing your new Series 1 amplifier. Checking your battery and
current sound system, 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 battery ground cable prior to begin-
ning the installation process.
3. For easier assembly, we suggest you run all wires prior to
mounting your amplifier in place.
4. Use only quality connectors for making connections. See your
Authorized Rockford Fosgate Dealer for Perfect Interface wire
enhancements.
5. 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.
6. Never run wires underneath the vehicle. Running the wires
inside the vehicle provides for the best protection.
7. Avoid running wires over or through sharp edges. Use rubber or
plastic grommets to protect wires routed through holes in metal.
8. ALWAYS protect the battery and electrical system from damage
with proper fusing. Install a fuseholder and fuse within 18” (45.7
cm) of the battery terminal to safeguard from possible damage or
injury. This fuse and fuseholder is included with the Series 1
amplifier. (See installation instructions on page 8.)
9. Grounding connections should be as short as possible and
always connected to metal that is welded to the main body, or
chassis, of the vehicle.
– 6 –
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