Rockford Fosgate PUNCH 800 User Manual (English)

Other manuals for Rockford Fosgate PUNCH 800

Installation & Operation42 pages

Operation & Installation54 pages

Questions and Answers:

M
Melissa TaylorAug 20, 2025
Why my Rockford Fosgate PUNCH 800 does not turn on (Power LED is off)?
- A
  Ashley UnderwoodAug 20, 2025
  If your Rockford Fosgate Amplifier does not turn on and the power LED is off, it could be due to several reasons: * The voltage applied to the REM terminal of the amplifier is not between 10.5 and 15.5 volts, or there is no voltage present. Check the alternator, battery, fuse, and wiring, repairing as necessary. If the voltage exceeds 15.5 volts, have the electrical system inspected by a certified car service center. * The voltage to the B+ terminal of the amplifier is not within the range of 10.5 to 15.5 volts, or there is no voltage present. Check the alternator, battery, fuse, and wiring, and repair if needed. For voltages above 15.5 volts, consult an authorized car service center. * The amplifier might not be properly grounded. Check the wiring and repair as needed.
H
Heather SosaAug 25, 2025
Why am I getting engine noise when using high level inputs on my Rockford Fosgate PUNCH 800 Amplifier?
- M
  Megan SmithAug 25, 2025
  Engine noise when using high-level inputs on your Rockford Fosgate Amplifier may occur because the TOPAZ input circuitry (in Rockford amps) or floating input circuitry (in non-Rockford amps) does not have a reference to 'chassis ground.' This noise typically appears at the auxiliary amplifier whose inputs are fed from the pass-thru output of the first amp. To resolve this, supply a reference ground to the TOPAZ input circuit (or floating input circuit in non-Rockford amps). Connect the shield of the RCA input from the auxiliary amp to the chassis ground of the radio, or as an alternative, connect the RCA shield to the amplifier's power ground terminal.
J
Jennifer CruzAug 26, 2025
What to do if my Rockford Fosgate PUNCH 800 Amplifier has no sound but the power LED is on?
- D
  Danielle JohnstonAug 26, 2025
  If your Rockford Fosgate Amplifier isn't producing sound even though the power LED is on, here's what you can check: * Ensure the RCA input from the source unit is correctly connected and functioning. Try substituting with a known working source and cables, repairing or replacing as needed. * Inspect speaker leads for shorts, either to each other or to the vehicle's chassis. Disconnect existing speakers and test with known working speakers and wires. If the amplifier then works, repair the wiring and speaker installation. * Test the speakers themselves for defects by disconnecting the existing ones and trying known working speakers. If the amplifier works, repair or replace the faulty speakers.
T
trujillorobertAug 27, 2025
What to do if my Rockford Fosgate Amplifier speaker output is low or distorted?
- A
  Amber RhodesAug 27, 2025
  To address low or distorted speaker output from your Rockford Fosgate Amplifier: * Readjust the input gains of the amplifier, as the input gain signal might be incorrectly set. * Verify the source unit output. If it's too low or has no output, check the system with a known working source and repair or replace the original source as needed. * Check for low battery voltage or significant voltage drops to the amplifier under load. Inspect the alternator, battery, fuse, and power and ground wiring, and repair as necessary.
B
Brittany WashingtonAug 30, 2025
How to fix engine noise when using high level inputs with Rockford Fosgate PUNCH 800 Amplifier?
- A
  Adam WallAug 30, 2025
  To get rid of engine noise when using high level inputs on your Rockford Fosgate Amplifier: supply reference ground to the TOPAZ input circuit (or floating input circuit in non-Rockford amps). Connect shield of RCA input from auxiliary amp to chassis ground of radio or connect the RCA shield to the amplifier's power ground terminal.
K
kevinbridgesSep 3, 2025
How to troubleshoot a Rockford Fosgate Car Amplifier that does not turn on?
- E
  Erica ColemanSep 3, 2025
  If your Rockford Fosgate Car Amplifier isn't turning on and the power LED is off, it could be due to several reasons. First, the voltage applied to the REM terminal might not be between 10.5 and 15.5 volts, or there might be no voltage present at all. Check the alternator, battery, fuse, and wiring, and repair them if needed. If the voltage exceeds 15.5 volts, have the electrical system inspected by a certified car service center. Alternatively, the voltage to the B+ terminal might be outside the 10.5 to 15.5-volt range, requiring the same checks and repairs. Lastly, the amplifier might not be properly grounded, so inspect the wiring and repair as necessary.
W
William PriceSep 5, 2025
What to do if my Rockford Fosgate Car Amplifier has no sound but the power LED is on?
- D
  dhernandezSep 5, 2025
  If your Rockford Fosgate Car Amplifier has no sound but the power LED is on, the issue might stem from the speakers or their wiring. Start by disconnecting the existing speakers and testing the amplifier with known working speakers and wires. If the amplifier now plays sound, carefully inspect the wiring and installation of your original speakers, making necessary repairs. Another possibility is that the speakers themselves are defective. Disconnect the existing speakers and test with known working speakers to identify if the speakers need repair or replacement.
K
Kevin Johnson PhDSep 6, 2025
Why is the speaker output low or distorted on my Rockford Fosgate PUNCH 800 Amplifier?
- L
  Lisa WatsonSep 7, 2025
  Low or distorted speaker output from your Rockford Fosgate Amplifier can stem from several causes. It may be that the input gain signal for the amplifier is incorrectly set, so readjust the input gains. Another possibility is a source unit output that is too low or has no output, in which case you should check the system with a known working source and repair or replace the original source as needed. Finally, it could be due to low battery voltage or large voltage drops to the amplifier under load. In this case, check the alternator, battery, fuse, and power and ground wiring, repairing as necessary.
D
Dustin CurtisSep 8, 2025
What to do if my Rockford Fosgate PUNCH 800 makes a turn-on pop noise?
- B
  Brittany ColeSep 9, 2025
  A turn-on pop noise in your Rockford Fosgate Amplifier can be due to a voltage spike from the output of a preceding component entering the amplifier through the input signal. Disconnect the input signal to the amplifier and turn the amplifier on and off. If the noise is eliminated, connect the REM lead of the amplifier to the source unit with a delay turn-on module. Alternatively, a voltage spike from the remote turn-on lead could be entering through the REM input terminal. Try using a different 12-volt source for the REM lead of the amplifier, such as directly from the battery. If the noise is eliminated, use a relay to isolate the amplifier from the noisy turn-on output.

Rockford Fosgate PUNCH 800 Specifications

General

Power Output	800 Watts
Channels	2
Low-Pass Crossover	50 - 250 Hz
RMS Power at 4 Ohms	400 Watts
RMS Power at 2 Ohms	800 Watts
Crossover	Variable 50-250Hz
Bass Boost	0 - 18 dB
Peak Power	1600W
Subsonic Filter	15Hz
Total Harmonic Distortion (THD)	<1.0%
Class	Class A/B