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Overview: The Rockford Fosgate Prime R250-1D mono Class D
amplifier is designed to power subwoofers. The Class D design and extruded
aluminum heatsink allows the amplifier to run cool and efficient, and results in
a small footprint.
CEA 2006 Compliant: The R250-1D's
power ratings are measured according to standards provided by the
Consumer Electronics Association (CEA). These standards allow you to accurately
compare the rated power output of all CEA 2006-compliant amplifiers, even if
they come from different brands. Manufacturers who adhere to the standards can
display the CEA 2006 logo on their products and packaging. CEA2006
Specifications for this amplifier are:
- 4 Ohms: 125 watts RMS x 1 at 4 ohms, 14.4 V, and 1% THD+N
- 2 Ohms: 250 Watts x 1 at 2 ohms, 14.4 V, and 1% THD+N
LED Indicators: The amplifier is equipped with two
side-mounted LED indicators:
- Power LED: illuminates blue when the unit is turned on.
- Protect LED: illuminates red if a short circuit or too
low of an impedance is detected at the speaker connections. The amplifier
will automatically shut down if this occurs.
Mounting: The amplifier can be mounted vertically or horizontally
using the supplied mounting screws. The amplifier should never be mounted in an engine compartment
as this will void the warranty.
Gain Control: The amplifier's gain control is preset to match the
output of most source units. The gain control can be adjusted from 1 to 11 with
an input sensitivity range of 150mV to 8V.
Punch Level Control: The R250-1D includes a wired Remote
Punch Level Control, which is linked to the gain control of the amplifier. The
module allows you to remotely control the output level of the amplifier from the
dash or center console of your vehicle. The Remote Punch Level Control features
a rotary dial, and comes with mounting hardware and a 16.5' connector cable.
Low Pass Filter: The amplifier is equipped with a 12dB/octave
Butterworth low-pass filter. You can adjust the low-pass frequency between 50 Hz
and 250 Hz.
Phase: The 2-way phase switch allows you to select the
output phase of the amplifier between 0-degrees and 180-degrees to match the
rest of your vehicle's speaker system.
Punch Bass: The Punch bass control on the amplifier is
adjustable from 0 (min) to 12dB (max) at 45Hz (fixed).
Power Terminals: The power and ground terminals are nickel-plated
screw terminals and will accommodate up to 4 AWG power/ground wire (up to 1/2"
spade or ring-style connector).
Note: Based on the 25A fuse rating and the power output
of the amplifier, an 8-gauge amplifier wiring kit is recommended.
Remote Turn-On Terminal: The remote turn-on terminal is a
nickel-plated screw terminal that will accommodate up to an 8 AWG wire (up 3/8"
spade or ring-style connector). This terminal is used to remotely turn-on and
turn-off the amplifier when +12V DC is applied, when connected to your
head unit's remote turn-on lead.
Speaker Terminals: The speaker terminals are heavy duty, nickel-plated screw-terminals what will accommodate up to 8 AWG
speaker wire (up to 3/8" spade or ring-style connectors). There are two
pairs of speaker terminals which are paralleled internally. This allows you to
connect a single 4-ohm or a single 2-ohm subwoofer, or two 4-ohm subwoofers.
RCA Input Jacks: The industry standard RCA jacks provide an easy
connection for signal level input. They are nickel-plated to resist signal
degradation caused by corrosion.
RCA Output Jacks: A pair of RCA pass-thru jacks provides a
convenient source for daisy-chaining an additional amplifier without running an
extra set of RCA cable from the front of your vehicle to the rear amplifier
Fuse: The amplifier is equipped with one installed 25-amp ATC fuse.
The amplifier also comes supplied with a spare 25-amp fuse.