Introduction

Features

and

Benefits

This manual provides information on the features, instal- lation, and operation of the Punch 4040 DSM and 4080 DSM Amplifiers. We suggest you save this manual for future reference.

We strongly recommend you have your Authorized Rock- ford Fosgate Dealer install your new Punch 4-channel amplifier. If you do choose to install the amplifier yourself, please be sure to read the entire manual before begin- ning.

The Rockford Fosgate 4-Channel automotive stereo power amplifiers provide state-of-the-art sound in cars, vans, boats, or wherever a high current 12 volt power source is available.

“Discrete Surface Mount” (DSM) technology is utilized in the crafting of all of our Punch amplifiers. This process provides greater ruggedness and consistency of both components and layout. Already used heavily in aero- space and industrial applications, this technology is also highly advantageous in the hostile automotive environ- ment.

Low Level Input Senstivity. The Punch 4-channel ad- justable input circuits are designed to match almost any music source. The amplifiers will drive most normal speaker types.

Punch Equalization. This circuit is designed to compen- sate for the acoustic inadequacies of the automotive environment. This patented circuitry will correct for the poor bass response and natural high frequency roll-off inherent in the world of automotive stereo. The result is full-range sound without the unpleasant changes in the mid-range sound produced by most tone control and equalizer circuits.

Active Electronic Crossover Modules built-into the 4040 and 4080 features 12 dB/octave Butterworth filters. The independent crossover points in these plug-in mod- ules allow for various configuration possibilities.