® 4a t r a n s • n a 4-C HANNEL A MPLIFIER I NSTALLATION & O PERATION M ANUAL ® ®
Dear Customer, Congratulations on your purchase of the world'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.
TABLE OF CONTENTS Introduction ...................................................................................... 1 Punch 4-Channel Amplifier Accessory Pack ...................................... 1 Rockford Fosgate Accessories ............................................................ 2 Technical Design Features ................................................................ 3 Design Features .................................................................................
INTRODUCTION The Punch 400x4 (pronounced “x4” not “by 4”) is a 4-channel amplifier which can deliver 400 watts RMS. This amplifier utilizes a 2/4-channel input switch to eliminate the need for signal splitters. Four internal XCard crossovers allow the amplifier to be configured for use with many popular system designs without the added cost of external processors. The Punch 400x4 is a powerful 4-channel amplifier with integrated features which are offered at a competitive price.
R O C K F O R D F O S G AT E A C C E S S O R I E S The following accessories were designed to enhance the performance of the Punch 400x4 amplifiers. Energy Storage Capacitor The Punch capacitors are used to provide extra current needed by amplifiers to reproduce musical transients. The Punch Caps also have the natural ability to filter AC ripple caused by the alternator, reducing the chance of noise in the system.
T ECHNICAL D ESIGN F EATURES ◆ TRANS•ANA (TRANSconductance Active Nodal Amplifier) The TRANS•ANA (TRANSconductance Active Nodal Amplifier) is a circuit that allows the audio signal to pass through the amplifier at low voltage. The signal is directly level-shifted to the fixed high voltage rails via a pair of driver transistors. Signal linearity is assured by an active node formed by the driver transistors at ultrasonic frequencies.
◆ DSM (Discrete Surface Mount) Technology The DSM (Discrete Surface Mount) manufacturing process combines the advantages of both discrete components and integrated circuitry. Rockford Fosgate is the only American amplifier manufacturer to have invested millions into this process. DSM components differ from conventional discrete components in three ways. They are more compact, more rugged, and they efficiently dissipate generated heat.
◆ RTP (Real Time Protection) NOMAD (NOn-Multiplying Advanced Decision) The Punch and Power amplifiers use an analog computer process to maximize safe output power under all operating conditions. Rockford Fosgate pioneered and developed RTP (Real Time Protection), a crucial element in the performance edge of our amplifiers.
◆ Pass-Thru Output The Pass-Thru output provides a convenient source for daisychaining an additional amplifier without the need for extra RCA cables or “Y” adapters. The Pass-Thru signal is derived from summing the Front and Rear Left inputs to create a Left output, and summing the Front and Rear Right inputs to create a Right output. When the amplifier is used with 4-channel inputs, the Pass-Thru provides constant output regardless of the source unit fade position.
D ESIGN F EATURES 1. Cast Aluminum Heatsink – The cast aluminum heatsink of the Punch 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. End Caps – Interchangeable end caps conceal the wiring and input cables, giving the amplifier a clean “stealth” look. 8 9 10 7 9 6 3 5 4 11 3 3.
7. Signal Input Switch – This switch allows selection of 2-channel or 4-channel input. 8. 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. One of the internal XCards can be designated to the Pass-Thru, creating a dedicated low-pass, high-pass, or full range output. 9.
I N S TA L L AT I O N C O N S I D E R AT I O N S The following is a list of tools you will need for installing the Punch amplifier: Allen wrenches 7/64" & 3/32" (included) Wire strippers Electric hand drill w/assorted bits Wire crimpers Voltmeter Battery post wrench Wire cutters Assorted connectors This section focuses on some of the vehicle considerations for installing your new Punch amplifier.
M OUNTING L OCATION 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 generated over a wide range of operating conditions. However, to maximize the performance of your amplifier, care should be taken to ensure adequate ventilation.
B ATTERY AND C HARGING 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.
3. Mount the fuseholder within 18" of the battery using two (2) #8 screws. Disassemble the fuseholder. You should have 2 black plastic end caps, 2 gold-plated fuse clips, a plastic spacer and the fuseholder body. Trim the amplifier power cable to reach the fuseholder and strip the wire 3/8". Slide one of the end caps over the wire (narrow end first) and insert the wire into one of the fuse clips. Tighten the set screw. Screw the black end cap to the fuseholder body to secure the cable.
8. 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. 9. Perform a final check of the completed system wiring to ensure that all connections are accurate.
USING THE XCARD The crossover functions are controlled through the use of an XCard and can be set for high-pass, low-pass or full range operation. Each crossover card has two faces: one face operates Full Range, the other has arrows to indicate the edge for selecting HP (high-pass) or LP (low-pass) operation. Orient the card with the desired operating edge, indicated by the arrow, toward the socket terminals inside the amplifier. Firmly, but carefully, plug the card into the socket.
XC ARD C ONFIGURATIONS Configure a 12dB/octave filter for the Front channels. LED + L – + R – REM B+ – R + – L + Front GND Rear Front XCard HP 100Hz-20kHz 12dB/octave HP XCard Rear 1 XCard Rear 2 XCard Pass-Thru • Front XCard set to High-Pass or Low-Pass Configure a 12dB/octave filter for the Rear channels.
Configure a 24dB/octave filter for the Rear channels. LED + L – + R – REM B+ – L + – R + Front GND Rear XCard Rear 1 LP XCard Front 20Hz-100Hz 24dB/octave LP XCard Rear 2 XCard Pass-Thru LP • Rear XCards 1 & 2 set identically to High-Pass or Low-Pass Configure a 12dB/octave Bandpass filter for the Rear channels.
Configure a 12dB/octave filter for the Pass-Thru Front Gain 0/180 4/2 20Hz-100Hz 12dB/octave LP XCard Front XCard Rear1 XCard Rear2 XCard Pass-Thru LP • Pass-Thru XCard set to High-Pass or Low-Pass – 17 – Rear Gain
USING THE SIGNAL INPUT SWITCH 2-Channel Input INPUT 1 2 Front Gain R R L L 0°/180° 4/2 Input Rear Gain Front Pass-Thru Rear L - Summed Output R - Summed Output LED + L – + R – REM B+ GND – L + Rear L – R + Front R L R • RCAs connected to Front inputs • Signal Input Switch set to 2-channel input • Pass-Thru is a non-fading summed output • This configuration eliminates the need for signal splitters – 18 –
4-Channel Input INPUT 1 2 Front Gain 3 4 R R L L 0°/180° Rear Gain 4/2 Input Front Pass-Thru Rear L - Summed Output R - Summed Output LED + L – + R – REM B+ GND – L + Rear L R – R + Front R R L F • RCAs connected to Front & Rear inputs • Signal Input Switch set to 4-channel input • Pass-Thru is a non-fading summed output • This configuration allows for Front & Rear fading – 19 – R F
B ASI C C ON N E CT ION S Power Connections LED + L – B+ GND + R – – L + Connect to remote turn-on lead of source unit Connect to chassis ground of vehicle* Less than 18" Connect to B+ of battery with a 50 amp fuse *Keep grounds as short as possible.
2-Channel Stereo Operation INPUT Front Gain 0/180 4/2 Rear Gain Front Rear Pass-Thru LED + L – + R – REM B+ GND Rear + – – L + – R + Front – 4 ohm min. left + 4 ohm min.
2-Channel Mono Operation INPUT Front Gain 0/180 4/2 Rear Gain Front Rear Pass-Thru LED + L – + R – REM B+ GND Rear + – – 4 ohm min. • • • • • • • • • – L + – R + Front + 4 ohm min.
INPUT 4-Ch. 3-Channel Operation { { 2-Ch. Front Gain 0/180 4/2 Rear Gain Front Rear Pass-Thru LED + L – + R – REM B+ GND – – + Rear + 4 ohm min. • • • • • • • • • L + – R + Front – 2 ohm min. – + 2 ohm min.
4-Channel Stereo Operation { INPUT 4-Ch. { 2-Ch. Front Gain 0/180 4/2 Rear Gain Front Rear Pass-Thru LED + L – + R – REM B+ – GND L Rear + – 2 ohm min. • • • • • • • + – 2 ohm min. – + 2 ohm min. + – R + Front – + 2 ohm min.
4-Channel Stereo/Single Mono Operation { INPUT 4-Ch. { 2-Ch. Front Gain 0/180 Rear Gain 4/2 Front Rear Pass-Thru LED + L – + R – REM B+ – GND L Rear + – 2 ohm min. + – 2 ohm min. – + – R + Front + – 2 ohm min. – + 2 ohm min. + 4 ohm min.
4-Channel Stereo/Dual Mono Operation { INPUT 4-Ch. { 2-Ch. Front Gain 0/180 Rear Gain 4/2 Front Rear Pass-Thru LED + L – + R – REM B+ – GND L Rear + – + – 2 ohm min. 2 ohm min. + – + – R + Front + – 2 ohm min. – – 4 ohm min. + 2 ohm min. + 4 ohm min.
SYSTEM DIAGRAMS 200 Watt 3-Way System Rear Front ® RFA-414 + 2X-4 – + – RFA-414 – – a n a + + • + – + 2X-4 – 4 + ® t r a n s – – + RFA-812 100Hz - 20kHz 12dB/octave HP 20Hz - 100Hz 24dB/octave LP – 27 –
400 Watt 4-Way System Rear Front Pass-Thru ® – – RFA-414 + – 2X-4 + – + a n a – + + • RFA-414 2X-4 + – + 12dB/octave LP 12dB/octave HP – 100Hz - 275Hz – 4 + ® t r a n s 275Hz - 20kHz 12dB/octave HP + + – – 2 D S M RFA-812 – 28 – ® 20Hz - 100Hz 24dB/octave LP
20Hz - 100Hz 24dB/octave LP – – RFA-812 – – + – a n a + • 4 + 12dB/octave LP 12dB/octave HP 100Hz - 275Hz + + ® t r a n s 2X-4 RFA-414 12dB/octave HP 275Hz - 20kHz + RFA-414 + 2X-4 – – – + ® + – + – Rear – – 12dB/octave LP 12dB/octave HP 100Hz - 275Hz + + ® • 4 t r a n s – + a n a 2X-4 RFA-414 12dB/octave HP 275Hz - 20kHz + RFA-414 + 2X-4 – – ® + – – + Pass-Thru – – 29 – + Front 600 Watt 4-Way System ® D S M 2
– + 2X-4 RFA-414 12dB/octave HP 275Hz - 20kHz + RFA-414 + 2X-4 – – – – ® – – RFA-812 ® 2X-4 RFA-414 Pass-Thru 12dB/octave HP 275Hz - 20kHz + RFA-414 + 2X-4 – – + – + a n a + 12dB/octave LP 12dB/octave HP • 4 t r a n s 100Hz - 275Hz + + 20Hz - 100Hz 2 24dB/octave LP D S M 20Hz - 100Hz ® 24dB/octave LP RFA-812 – – + – a n a + • 4 + 12dB/octave LP 12dB/octave HP 100Hz - 275Hz – + ® t r a n s + – – + ® Rear + – + – 30 – – – + Pass-Thru – + Front
TROUBLESHOOTING Symptom Amplifier does not turn on (Power LED is off) Amplifier has no sound (Power LED is on) Diagnosis Remedy 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 and repair as necessary. If the voltage is above 15.5 volts, have the electrical system inspected by an authorized car service center. Voltage to the B+ terminal of the amplifier is not between 10.5 and 15.
Symptom Diagnosis Remedy Input gain signal for amplifier is incorrectly set. Readjust input gains of amplifier. Source unit output too low or source unit has no output. Check system with known working source and repair or replace original source as needed. XCard is missing or not placed properly in crossover slots. Check XCard position and repair or replace as necessary. Low battery voltage or large voltage drops to the amplifier under load.
Symptom Engine Noise Diagnosis Remedy Noise is radiating into RCA signal cable. Check connections, run the RCA cables on a different route away from sources of high voltage. Bad component in the signal chain. Check connections, bypass additional components (crossovers and equalizers) between the source unit and the amplifier. Connect one component at a time to determine the culprit. Repair or replace components as necessary. Noise is radiating into speaker cables.
DYNAMIC POWER MEASUREMENTS About the Dynamic Power Measurements The Audio Graph PowerCube is a test instrument used to measure the output of an amplifier in accordance with IHF-202 industry standards. The IHF-202 standard is a dynamic power measurement and was developed as a means of measuring power in a manner that best represents the real world operation of an amplifier. Many manufacturers, including Rockford Fosgate, at times will measure amplifier power into a fixed resistor (4 ohm, 2 ohm).
Information Cubed The data acquired in the testing procedure is then graphed in the form of a 3-dimensional cube. Hence the name PowerCube. The Phase Angle is expressed on the horizontal axis, the Output Voltage is presented on the vertical axis and the Impedance is displayed on the Z axis. Output Power, in watts, is listed on the left hand side for each impedance at each phase angle. AudioGraph – The PowerCube™ x2 = STEREO MONO = BRIDGED MONO I M P E D A N C E Amplifier: PUNCH 200ix 14.
0X4 S P E C I F I C A T I O N S Continuous Power Rating (Competition Standard) – Measured at 13.8V RMS continuous power per channel, all channels 50 Watts driven into a 4Ω load from 20-20,000Hz with less than 0.05% Total Harmonic Distortion (THD) RMS continuous power per channel, all channels driven into a 2Ω load from 20-20000Hz, with less than 0.1% Total Harmonic Distortion (THD) 100 Watts RMS continuous power bridged into a 4Ω load from 20-20000Hz, with less than 0.
W A R R A N T Y I N F O R M AT I O N Rockford Fosgate warrants all electronics to the original consumer/purchaser to be free from defects in materials or workmanship for a period of three (3) years. We will cover parts and labor provided the product was purchased from an Authorized Rockford Fosgate Dealer. This warranty does not apply to any product on which the seals and/or serial number have been broken, removed, tampered with, defaced or altered in any manner.
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Rockford Fosgate Rockford Corporation 546 South Rockford Drive Tempe, Arizona 85281 U.S.A. In U.S.A.
