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trans• ana
® ®
car audio
for
trans• ana
trans• ana
2-Channel Amplifiers
Operation & Installation
trans• ana
®
fanatics
punch
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Dear Customer, Congratulations on your purchase of the world's finest brand of car audio amplifiers. At Rockford Fosgate we are fanatics about musical reproduction at its best, and we are pleased you chose our product. Through years of engineering expertise, hand craftsman- ship 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 produc
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TABLE OF CONTENTS Introduction................................................................................................ 1 Punch Amplifier Accessory Pack ................................................................... 1 Technical Design Features............................................................................ 2 Design Features .......................................................................................... 5 Installation Considerations .............................
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INTRODUCTION Rockford engineers designed the Punch 55.2, 75.2, 125.2 and 225.2 amplifiers to withstand the rugged automotive environment while delivering superior sound quality in a flexible, reliable, and efficient package. TRANS•ANA is a low voltage circuit in the preamp stage of all Punch .2 amplifiers that lets the music sound crystal clear and very real, even when played at high volume levels. This is matched with TOPAZ, a unique grounding circuit used to eliminate noise problems associa
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TECHNICAL DESIGN FEATURES u 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 drive transistors at ultrasonic frequencies. This allows amplifier performance similar to trans•nova which is hig
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u 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 compo- nents in different ways. They are more compact, more rugged, and they efficiently dissipate generated heat. Using them wherever appropriate allows the advantages a
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u MOSFET Devices Rockford Fosgate is one of the few manufacturers in the sound community to utilize MOSFET devices in both the power supply and the output stages. MOSFET (Metal Oxide Semiconductor Field Effect Transistor) devices offer several important inherent advantages over the 30 year old technology of bi- polar design. These advantages include: thermal stability, switching speed, ultra low output impedance and wider bandwidth linearity. In addition, MOSFETs operate very similarly to vacuum
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DESIGN FEATURES 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 – The unique end caps conceal the wiring and input cables, giving the amplifier a clean “stealth” look. 6 6 3 8 7 7 3 8 Speaker Speaker +L– +R– Left Left Right Right Treble Bass Gain Input Input Gain 9 5 4 LED REM B+ GN
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LP HP 7. Input Sensitivity Controls – The input level controls are preset to match the output of most source units. They can be adjusted to match output levels from a variety of source units. 8. Punch Equalization Controls – The Punch EQ helps correct for acoustical deficiencies in the listening environment. The Bass control allows a narrow band adjustment of up to 18dB centered at 45Hz. The Treble control is a wide band hinged adjustment with a maximum of 12dB at 20kHz. The Punch EQ can be
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INSTALLATION CONSIDERATIONS The following is a list of tools you will need for installing the Punch amplifier: Allen wrenches 9/64" & 3/32" (included) Voltmeter Wire strippers Battery post wrench Electric hand drill w/assorted bits Wire cutters 17' (518.16cm) Red Power Wire Assorted connectors 12' (365.76cm) Remote Turn-On Wire Wire crimpers 1.5' (45.72cm) Black Grounding Wire This section focuses on some of the vehicle considerations for installing your new Punch amplifier. Checking your batte
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MOUNTING LOCATION 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. Trunk Mounting Mounting the amplifier vertically on a surface with the fin grooves running up
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> > > BATTERY AND CHARGING 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. To maximize the perf
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Punch 55.2, 75.2, 125.2 Trim the power cable to within 18" of the battery and install the protective rubber boot, which is packed with the fuseholder, over the end of the wire. Strip 3/8" of insulation from the wire and insert into the end of the fuseholder, then crimp it in place. Slide the rubber boot into place to cover the connection. Use the section of cable that was trimmed earlier and connect it to the other end of the fuseholder. Punch 225.2 Mount the fuseholder within 18" of the battery
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amplifier. Connect the other end of the REM wire to a switched 12 volt positive source. The switched signal is usually taken from the source unit's auto antenna or the accessory lead. If the source unit does not have these outputs available, the recommended solution is to wire a mechani- cal switch in line with a 12 volt source to activate the amplifier. 7. Securely mount the amplifier (with supplied screws) to the vehicle or amp rack. Be careful not to mount the amplifier on cardboard or plasti
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a O d p v e r a a n USING PASSIVE CROSSOVERS t c i e o d n A passive crossover is a circuit that uses capacitors and/or coils and is placed on speaker leads between the amplifier and speaker. The crossover delegates a specific range of frequencies to the speaker for optimum driver performance. A crossover network can perform one of three functions: High-Pass (capaci- tors), Low-Pass (inductors or coils) and Bandpass (combination of capacitor and coil). The most commonly used passive crossover ne
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a O p d e v r a a n t TABLE OF CROSSOVER COMPONENT VALUES c i e o d n C L 6dB/Octave Low-Pass 6dB/Octave High-Pass Speaker Impedance Freq. Hertz 2 OHMS 4 OHMS 8 OHMS L C L C L C 80 4.1mH 1000μF 8.2mH 500μF 16mH 250μF 100 3.1mH 800μF 6.2mH 400μF 12mH 200μF 130 2.4mH 600μF 4.7mH 300μF 10mH 150μF 200 1.6mH 400μF 3.3mH 200μF 6.8mH 100μF 260 1.2mH 300μF 2.4mH 150μF 4.7mH 75μF 400 .8mH 200μF 1.6mH 100μF 3.3mH 50μF 600 .5mH 136μF 1.0mH 68μF 2.0mH 33μF 800 .41mH 100μF .82mH 50μF 1.6mH 26μF 1000 .31mH 78
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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. The XCard shipped with your amplifier is set for Full Range. 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. Firml
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a O d p v e r a a n RESISTOR CHART t c i e o d n Our tests have shown that using 0.047μf capacitors for frequencies below 100Hz, and 0.022μf capacitors for frequencies above 100Hz, result in more linear crossover control. Refer to the Specifications page to determine the capacitor value of each supplied XCard. Butterworth Alignment Q = .707 Butterworth Alignment Q = .707 1% resistors used with 0.047μF caps 1% resistors used with 0.022μF caps Frequency R1 R2 Frequency R1 R2 20Hz 169kΩ 169kΩ 20H
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P55.2 - 20A P75.2 - 30A P125.2 - 40A P225.2 - 50A I ® ® N S T A L L INSTALLATION A T I O N Power Connections LED REM B+ GND Connect to remote Connect to chassis turn-on lead of ground of vehicle* source unit Less than 18" Connect to B+ of battery with appropriate fuse value *Keep grounds as short as possible – 16 –
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® ® I N S T A L L A T I O N Stereo Operation RCA Input Speaker Speaker +L– Left Left Right Right +R– Treble Bass Gain Input Input Gain – 2Ω min. 2Ω min. + • RCA inputs are connected to both left and right channels • Gain for left and right channels operate independently • Impedance for each channel should be 2Ω minimum • XCard can be set for High-Pass, Low-Pass or Full Range – 17 – – +
