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Rockford Fosgate 240X4 - page 1
®® I NST ALLA TION & O PERA TION M ANUAL ® trans • ana 4 ® trans • ana 4 -C HANNEL A MPLIFIERS ...
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Rockford Fosgate 240X4 - page 2
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Rockford Fosgate 240X4 - page 3
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 prod ...
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Rockford Fosgate 240X4 - page 4
T ABLE OF C ONTENTS Introduction ...................................................................................... 1 Punch 4-Channel Amplifier Accessory Pack ...................................... 1 Rockford Fosgate Accessories ............................................................ 2 Technical Design Features ............................ ...
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Rockford Fosgate 240X4 - page 5
I NTRODUCTION The Punch 160x 4 and 240x 4 are 4-channel amplifiers which can deliver 160 watts and 240 watts RMS respectively. Both ampli- fiers utilize a 2/4-channel input switch to eliminate the need for signal splitters. A pair of internal XCard crossovers allow the amplifiers to be configured for use with many popular system designs without the ...
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Rockford Fosgate 240X4 - page 6
R OCKFORD F OSGA TE A CCESSORIES The following accessories were designed to enhance the perfor- mance of the Punch 160x 4 and 240x 4 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 ...
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Rockford Fosgate 240X4 - page 7
T ECHNICAL D ESIGN F EA TURES – 3 – ◆ T RANS•ANA ( T RANSconductance Active Nodal Amplifier) The TRANS • ANA ( T RANSconductance 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 transist ...
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Rockford Fosgate 240X4 - page 8
◆ DSM (Discrete Surface Mount) Technology The DSM (Discrete Surface Mount) manufacturing process com- bines the advantages of both discrete components and integrated circuitry. Rockford Fosgate is the only American amplifier manu- facturer to have invested millions into this process. DSM compo- nents differ from conventional discrete components i ...
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Rockford Fosgate 240X4 - page 9
◆ 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. Rock- ford Fosgate pioneered and developed RTP (Real Time Protection), a crucial element in the performance edge of our amplifiers. The innovative NOMAD ...
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Rockford Fosgate 240X4 - page 10
D ESIGN F EA TURES 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 ca ...
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Rockford Fosgate 240X4 - page 11
6. RCA Input Jacks – The industry standard RCA jacks provide easy connections for signal level input. They are gold-plated to resist the signal degradation caused by corrosion. 7. Signal Input Switch – This switch allows selection of 2-channel or 4-channel source unit feed. 8. Input Sensitivity Controls – The input level controls are preset f ...
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Rockford Fosgate 240X4 - page 12
I NST ALLA TION C ONSIDERA TIONS This section focuses on some of the vehicle considerations for installing your new Punch amplifier. Checking your battery and present 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 ...
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Rockford Fosgate 240X4 - page 13
M OUNTING L OCA TION 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 condi- tions. However, to maximize the performance of your am ...
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Rockford Fosgate 240X4 - page 14
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 ...
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Rockford Fosgate 240X4 - page 15
3. Punch 160x 4 Trim the power cable to within 18" of the battery and install the protective rubber boot packed with the fuseholder over the end of the wire. Strip 3/8" of insulation from the wire and insert it into the end of the fuseholder, then crimp it in place. Slide the rubber boot into place to cover the connection. Use the section ...
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Rockford Fosgate 240X4 - page 16
6. Prepare the REM turn-on wire for connection to the amplifier by stripping 5/8" 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 ...
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Rockford Fosgate 240X4 - page 17
U SING THE XC ARD 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 ope ...
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Rockford Fosgate 240X4 - page 18
U SING THE S IGNAL I NPUT S WITCH 2-Channel Input Input 1 2 Rear XCard Front XCard + L– + R– LR LR – R+ – L+ 4-Channel Input + L– + R– L F R F 12 – L+ – R+ LR R R Input Rear XCard Front XCard 34 – 14 – • RCA s connected to Front inputs • Signal Input Switch set to 2-channel input • This configuration eliminates the need fo ...
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Rockford Fosgate 240X4 - page 19
B ASIC C ONNECTIONS *Keep grounds as short as possible. Power Connections REM Power Connect to remote turn-on lead of source unit Connect to B+ of battery with proper fuse Connect to chassis ground of vehicle* B+ GND Less than 18" P160x4 P240x4 - 30A - 50A – 15 – ...
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Rockford Fosgate 240X4 - page 20
Stereo Operation +L– +R– Input 2-Ch. { + – + – Rear XCard Front XCard 4 ohm 4 ohm *Note: XCard can be inserted in HP , LP , or Full Range Rear XCard* Front XCard* LP LP 2-Channel Input – R + – L+ • RCAs are connected to front inputs • Signal Input Switch set to 2-channel input • Gain for front and rear must be set equally to balan ...
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Rockford Fosgate 240X4 - page 21
Mono Operation + L– + R – Input 2-Ch. { + – + – Rear XCard Front XCard 4 ohm 4 ohm *Note: XCard can be inserted in HP , LP , or Full Range Rear XCard* Front XCard* LP LP 2-Channel Input – L+ – R+ – 17 – • RCAs are connected to front inputs • Signal Input Switch set to 2-channel input • Gain for front and rear operates independ ...
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Rockford Fosgate 240X4 - page 22
3-Channel Operation Note: Invert the speaker wire polarity (+ and – ) on the rear channels if XCard for front channel is set to HP and XCard for rear channel is set to LP (or vice versa). + L – 2-Ch. { + – + – Rear XCard Front XCard 2 ohm 4 ohm *Note: XCard can be inserted in HP , LP , or Full Range Rear XCard* Front XCard* LP HP 2-Channel ...
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Rockford Fosgate 240X4 - page 23
4-Channel Stereo Operation + – 2 ohm + – 2 ohm + L – 2-Ch. { + – Rear XCard Front XCard 2 ohm *Note: XCard can be inserted in HP , LP , or Full Range Rear XCard* Front XCard* HP HP 2-Channel Input Rear XCard Front XCard *Note: XCard can be inserted in HP , LP , or Full Range Rear XCard* Front XCard* HP HP 4-Channel Input – L+ – R+ + R ? ...
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Rockford Fosgate 240X4 - page 24
4-Channel Stereo/Single Bridged Operation • RCAs are connected to front or front and rear inputs • Signal Input Switch is set to 2-channel or 4-channel input • Gain for front and rear operates independently • Impedance for front and rear stereo channel should be no less than 2 Ω • Impedance for rear bridged channel should be no less tha ...
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Rockford Fosgate 240X4 - page 25
– + 2 ohm – + 2 ohm + L – 2-Ch. { + – Rear XCard Front XCard 2 ohm *Note: XCard can be inserted in HP , LP , or Full Range Rear XCard* Front XCard* FULL FULL 2-Channel Input Rear XCard Front XCard *Note: XCard can be inserted in HP , LP , or Full Range Rear XCard* Front XCard* FULL FULL 4-Channel Input – L+ – R+ + R – + – 4-Ch. INPU ...
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Rockford Fosgate 240X4 - page 26
S YSTEM D IAGRAMS 80 Watt 3-Way System ® PWR-812 Front Rear ® trans • ana + – + – 12dB/octave LP 20Hz - 100Hz RF A-414 12dB/octave HP 100Hz - 20,000Hz 2X-4 2X-4 RF A-414 + – + – + – + – + – + – – 22 – ...
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Rockford Fosgate 240X4 - page 27
80 Watt 4-Way System RF A-414 ® PWR-812 Front Rear 12dB/octave HP 6dB/octave LP 100Hz - 275Hz 12dB/octave LP 20Hz - 100Hz 2X-4 ® trans • ana + – + – 2X-4 RF A-414 6dB/octave HP 275Hz - 20kHz – 23 – ...
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Rockford Fosgate 240X4 - page 28
200 Watt 4-Way System ® trans • ana PWR-812 Front Rear 12dB/octave LP 20Hz - 100Hz + – + – ® ® trans • ana ® RF A-414 12dB/octave HP 100Hz - 20,000Hz 2X-4 2X-4 RF A-414 RF A-414 2X-4 2X-4 RF A-414 12dB/octave HP 100Hz - 20,000Hz 12dB/octave HP 100Hz - 275Hz 4 – 24 – ...
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Rockford Fosgate 240X4 - page 29
300 Watt 4-Way System RF A-414 2X-4 2X-4 RF A-414 12dB/octave HP 100Hz - 20,000Hz Front Rear ® ® trans • ana RF A-414 12dB/octave HP 100Hz - 20,000Hz 2X-4 2X-4 RF A-414 ® trans • ana ® 4 12dB/octave HP 6dB/octave LP 100Hz - 275Hz RF A-64 RFA-64 ® POWER ® 250 2 12dB/octave HP 12dB/octave LP 25Hz - 100Hz PWR-812 – 25 – ...
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Rockford Fosgate 240X4 - page 30
T ROUBLESHOOTING Amplifier does not turn on (Power LED is off) Symptom 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. Voltage to the B+ termi- nal of the amplifier is not between 10.5 and 15.5 volts or there is no voltage present. Amplifier is not prop- erly g ...
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Rockford Fosgate 240X4 - page 31
Speaker Output Low or Distorted Readjust input gains of amplifier. Check system with known working source and repair or replace original source as needed. Check XCard position and repair or replace as neces- sary. Check the alternator, bat- tery, fuse, and power and ground wiring. Repair as necessary. Symptom Diagnosis Remedy Input gain signal for ...
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Rockford Fosgate 240X4 - page 32
Noise is radiating into RCA signal cable. Bad component in the sig- nal chain. Noise is radiating into speaker cables. Multiple grounds in the audio system. Ground loop between source unit and antenna. Engine Noise Symptom Diagnosis Remedy Check connections, run the RCA cables on a different route away from sources of high voltage. Check connection ...
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Rockford Fosgate 240X4 - page 33
D YNAMIC P OWER M EASUREMENTS 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 stan- dards. 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 wo ...
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Rockford Fosgate 240X4 - page 34
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 f ...
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Rockford Fosgate 240X4 - page 35
160 X 4 S PECIFICA TIONS Continuous Power Rating (Competition Standard) – Measured at 13.8V RMS continuous power per channel , all channels 20 Watts driven into a 4 Ω load from 20-20,000Hz with less than 0.05% Total Harmonic Distortion (THD) RMS continuous power per channel , all channels 40 Watts driven into a 2 Ω load from 20-20000Hz, with ...
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Rockford Fosgate 240X4 - page 36
Continuous Power Rating (Competition Standard) – Measured at 13.8V RMS continuous power per channel , all channels 30 Watts driven into a 4 Ω load from 20-20,000Hz with less than 0.05% Total Harmonic Distortion (THD) RMS continuous power per channel , all channels 60 Watts driven into a 2 Ω load from 20-20000Hz, with less than 0.1% Total Harm ...
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Rockford Fosgate 240X4 - page 37
W ARRANTY I NFORMA TION 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 th ...
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Rockford Fosgate 240X4 - page 38
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Rockford Fosgate 240X4 - page 39
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Rockford Fosgate 240X4 - page 40
Rockford Fosgate Rockford Corporation 546 South Rockford Drive Tempe, Arizona 85281 U.S.A. In U.S.A., (602) 967-3565 In Europe, Fax (49) 4207-801250 In Japan, Fax (81) 559-79-1265 6/95 MAN-0989-B ...
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