CA L C U L AT I N G VO L U M E

Calculating volume is merely a matter of measuring the dimensions in inches and using the formula: Volume = Height x Width x Depth. The result is in cubic inches, convert this to cubic feet by dividing by 1,728 (the number of cubic inches in a cubic foot). If two facing sides are of uneven length, add them together and divide by two to take the average. Using this number will give you the volume without the necessity of calculating the box in sections and adding the sections together. The thickness of the baffle material reduces the internal volume so this must be subtracted from the outside dimensions to determine the internal volume. The speaker itself also reduces the internal volume. The amount of air displaced by each model is listed on the specification sheet and should also be subtracted from the gross volume calculation.

BU I L D I N G AN EN C L O S U R E

To work properly, the walls of the enclosure must be rigid and not flex when subjected to the high pressures generated by the speaker's operation. We recommend using 3/4" thick high density particle board or medium density fiberboard (MDF), which are available at most building supply stores. For a large box, internal bracing is needed for reinforcement. The joints should be glued (use non- flammable carpenter glue) and secured with either nails or screws. Internally the joints should be sealed with silicon to prevent air leaking. Because the high density particle board and MDF are porous materials, it is suggested to seal the outside enclosure walls with polyurethane. Ideally, the port should be located on the same face as the speaker and positioned at least one port diameter away from the side and back walls.

In Conclusion

Special care has been taken to ensure your satisfaction with the Punch Power Woofers. The materials and workmanship have been carefully selected to guarantee performance equal to the needs of the most demanding conditions. If you have any further questions or advanced system needs, your Authorized Rockford Fosgate Dealer will be happy to assist you.

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Rockford Fosgate PWR-815, PWR-410, PWR-812, PWR-810 Ca L C U L At I N G Vo L U M E, Bu I L D I N G An En C L O S U R E
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PWR-415, PWR-412, PWR-810, PWR-812, PWR-815 specifications

Rockford Fosgate has long been a trusted name in the audio industry, and their PWR series amplifiers are designed to deliver superior sound performance, driving the best experience for audio enthusiasts. The PWR-812, PWR-815, PWR-412, PWR-415, and PWR-410 models cater to different requirements, offering a variety of power ratings and features suitable for various applications.

The PWR-812 is an 800-watt, 2-channel amplifier that operates at a power rating of 200 watts RMS at 4 ohms and 400 watts RMS at 2 ohms. With its Class D circuitry, it provides maximum efficiency while minimizing heat generation. The amplifier is equipped with adjustable crossovers, allowing users to tailor their sound settings according to their preferences. Its MOSFET power supply ensures robust performance and durability.

Moving on to the PWR-815, this model is a powerhouse, delivering 1500 watts across 2 channels. It is ideal for users looking to achieve higher volume levels without sacrificing clarity or detail. It features an impressive dynamic range, enabling it to reproduce the most demanding audio tracks with precision. The PWR-815 also leverages advanced thermal management features, which ensure reliable operation even under the most strenuous conditions.

The PWR-412 and PWR-415 models provide a balanced approach to power and control. The PWR-412, a 4-channel amplifier rated at 50 watts RMS per channel, is perfect for driving multiple speaker configurations. It supports extensive connectivity options, enabling seamless integration into existing audio systems. On the other hand, the PWR-415 elevates performance with its impressive 75 watts RMS per channel output, designed for those seeking a more robust sonic experience.

Finally, the PWR-410 amplifier is a 4-channel model that offers flexibility with its power output of 75 watts per channel at 4 ohms. It provides advanced features such as fan-cooled heat sinks for efficient thermal management and variable low-pass filters, allowing for fine-tuning of the audio signal.

All the amplifiers in the PWR series incorporate premium components and cutting-edge technologies, ensuring they meet the high standards that Rockford Fosgate is known for. With their robust build quality and thoughtful design, these amplifiers are well-suited for both casual listeners and serious audiophiles alike, making them a perfect choice for enhancing any car audio system.
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