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500.2
power
® ®
car audio
for
new
chrome
competition Power amplifier
heatsink
Operation & Installation
®
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 craftsmanship 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 product
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TABLE OF CONTENTS Introduction.................................................................................................................................................................1 Accessory Pack ........................................................................................................................................................... 1 Technical Design Features.............................................................................................................
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The Punch Power series of amplifiers represent the best Rockford Fosgate has to offer! Our engineers devised technical features which would be considered overkill by other audio manufacturers, but not at Rockford Fosgate! Trans•nova, DIAMOND, and TOPAZ, exclusively designed by Rockford, are just a few of these features which are described in the Technical Design Features section of this manual. INTRODUCTION ACCESSORY PACK The accessory pack includes the mounting hardware necessary to secure the
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TECHNICAL DESIGN FEATURES u trans•nova (TRANSconductance NOdal Voltage Amplifier) The trans•nova (TRANS conductance NOdal Voltage Amplifier) is a patented circuit (U.S. Patent 4,467,288) that allows the audio signal to pass through the amplifier at low voltage. Each amplifier channel utilizes its own “fully floating” power supply and is configured to increase power gain. The increase in power gain allows the drive stage to operate at a lower voltage. A low voltage drive stage is the same princi
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u TOPAZ (Tracking Operation Pre-Amplifier Zone) The TOPAZ (Tracking Operation Pre-Amplifier Zone) circuitry solves ground loop noise problems common to automotive amplifier design. This innovative new development allows vastly improved isolation of the input signal grounds from the power supply ground of the amplifier. This is accomplished by allowing the source unit to control the potential “environment” of the entire input structure or “zone” of the amplifier. This process improves the noise r
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u Bass EQ The Bass EQ helps correct for acoustical deficiencies in the listening environment. A unique potentiometer that controls bass compensates for the lack of low frequencies present in most car environments. Unlike a conventional tone control, the Bass EQ corrects for the specific problem of poor low bass response. THE RESULT: Provides better low bass response. u Balanced Line Inputs Using the Balanced Line Inputs provides the last word in achiev- Figure 2 RCA Input Differential able reje
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DESIGN FEATURES 1. Cast Aluminum Chrome Heatsink – The cast aluminum heatsink of the Punch Power 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. 3 13 8 6 7 12 3 L R R L (Mono) Speaker Gain Balanced Gain Bass Speaker + L – Phase L R Input
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HP LP 11. Bass EQ Control – The Bass EQ allows a narrow band adjustment of up to +18dB centered at 45Hz. The bass boost can be bypassed by turning the control to its minimum or counterclockwise position. 12. E-Z Bridge Switch / 0°-180° Phase Switch – This dual purpose switch enables you to E-Z bridge the amplifier or invert the signal phase of the right channel. 13. Phase Switch – This switch enables you to easily invert the phase of the left channel without having to disconnect the speaker wire
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INSTALLATION CONSIDERATIONS Tools Needed The following is a list of tools you will need for installing the Punch Power amplifier: Allen wrenches 9/64" , 3/32" & 1/8" (included) Wire Cutters Wire strippers Voltmeter Battery post wrench Wire crimpers Electric hand drill and assorted bits Assorted connectors 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 an
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MOUNTING LOCATION S The mounting location and position of your amplifier will have a great effect on its ability to dissipate the heat generated under 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 u
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> > > WIRING THE SYSTEM CAUTION: Avoid running power wires near the low level input cables, antenna, power leads, sensitive equipment or harnesses. The power wires carry substantial current and could induce noise into the audio system. 1. Configure the internal XCard crossovers prior to installation. Refer to the XCard Configurations on pages 14 & 15 for further information. 2. Plan the wire routing. Take care when running signal level RCA cables to keep them close together but isolated fro
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11. After the final inspection is complete, install the power fuse and enjoy listening. During the initial listening period, you may need to “fine tune” any phasing and level settings within your particular vehicle. To aid in this procedure, play a track with high musical content and cruise around your neighborhood. After fully evaluating the transient response of your system and making any final adjustments, all your neighbors within a 1 mile radius will assume that you have just successfully c
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a O d p e v r a TABLE OF CROSSOVER COMPONENT VALUES a n t c i e o d n L C 6dB/Octave High-Pass 6dB/Octave Low-Pass Freq. Speaker Impedance (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
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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 XCARD RESISTOR CHART e v r a a n 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 capacitors 1% resistors used with 0.022μF capacitors Frequency R1 R2 Frequency R1 R2 20
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XCard 1 Full XCard 1 Range Full Range XCARD CONFIGURATIONS Bypassing the Crossover L R R L (Mono) Speaker Balanced Gain Gain Bass Speaker Phase + L – Input L R – R + EQ 0 – 180° Balanced Pass Thru Pass Thru EZ Bridged 180°- 0° Unbalanced 20Hz-20kHz 20Hz-20kHz Full Range Full Range • XCard 1 inserted as Full Range • XCard 2 inserted as Full Range Configuring a 12dB/octave Filter L R R L (Mono) Speaker Balanced Gain Gain Bass Speaker Phase + L – Input L R – R + EQ 0 – 180
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XCard 1 XCard 1 HP LP Configuring a 24dB/octave Filter L R R L (Mono) Speaker Balanced Gain Gain Bass Speaker Phase + L – Input L R – R + EQ 0 – 180° Balanced Pass Thru Pass Thru Unbalanced EZ Bridged 180°- 0° 20Hz-80Hz 20Hz-80Hz 24dB/octave LP 24dB/octave LP • XCards 1 & 2 inserted identically as HP or LP NOTE: Both XCards must be customized to the same frequency for proper 24dB/octave operation. Configuring a 12dB/octave Bandpass Filter L R R L (Mono) Speaker Gain Balanced Gain Ba
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® ® I N S T INSTALLATION A L L A T I O N Power Connections LED REM B+ GND Connect to remote turn-on lead of source unit. Connect to chassis ground of vehicle* Less than 18" (45cm) + – Connect to B+ of battery with a 100 amp or (2) 50 amp fuses NOTE: We recommend using 4 gauge cables for power and for ground. This will give you the best performance possible. *Keep wire as short as possible. – 16 –
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® ® I N S T A L Stereo Operation L A T RCA I O N Input L R R L (Mono) Speaker Gain Balanced Gain Bass Speaker Phase + L – L R Input EQ – R + 0 – 180° Balanced Pass Thru Pass Thru EZ Bridged Unbalanced 180°- 0° – – 2Ω Min. 2Ω Min. + + • RCA inputs are connected to both left and right channels • Signal Input Switch selected to Unbalanced for RCA input • Left Phase Switch set to 0° • Right Phase Switch set to 0° • Gain for left and right channels operate independently • Impedance for e
