Manifold Vented Pole Piece – A vented pole piece by design ensures adequate ventilation to cool the voice coil and maintain safe operat- ing temperature. Our exclusive Manifold Venting technique prevents air pressure build-up that causes the splashing of Ferrofluid out of the voice coil gap.

Voice Coil – The construction of the voice coil is designed to maximize the speaker's power handling. The wire used is high temperature copper, wound in two layers on a black, anodized aluminum former. The wire itself will withstand high temperatures and the former will conduct the heat away from the coil.

Powder Coated Basket The stamped steel baskets of the Punch Power speakers are finished with a powder coat process. This good looking finish helps reduce basket resonance, preventing basket vibration from coloring the sound. Unrelated to the sonic perfor- mance of the speakers, but equally important, the powder coating used is environmentally friendly since no toxic chemicals are re- leased into the environment during the finishing process.

USING THE PUNCH POWER

MIDRANGE SPEAKERS

Speakers are built in different sizes to optimize their performance in different frequency bands. Crossovers are used to route the different frequency bands for each appropriate speaker. There are two opera- tional types of crossover, active and passive. An active crossover is an electronic filter which comes before the amplifier and separates the signal fed to different amplifiers in the system. A passive crossover is positioned after the amplifier and separates the signal fed to each speaker in the system. Each type of crossover offers its own advan- tages and disadvantages. Active crossovers offer the accuracy and flexibility needed for a sophisticated system and are used in expen- sive multiple amp designs. Passive crossovers, such as capacitors, resistors and inductors, allow the use of multiple speakers in a system which can easily be expanded over time. We offer passive crossovers with 6dB and 12dB per octave slopes. The 6dB per octave crossover requires only one component and the gentle slope allows for smooth transition between the speakers. The 12dB per octave crossover gives the speaker better power handling capacity outside the pass band of the crossover range.

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Rockford Fosgate PWR-54/58, PWR-64/68, PWR-34/38, PWR-408/808, PWR-44/48 owner manual Using the Punch Power Midrange Speakers