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PUNCH PR-250 IIR
PUNCH PR-250 IIR
INSTRUCTION MANUAL

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Summary of Contents for Rockford Fosgate PUNCH PR-250 IIR

  • Page 1 PUNCH PR-250 IIR PUNCH PR-250 IIR INSTRUCTION MANUAL...
  • Page 2: Practice Safe Sound

    To add the finishing touch to your new Rockford Fosgate image, order your Rockford P.0.P. which includes everything from t-shirts and jackets, to key chains and neon hats. To get a free brochure on Rockford Fosgate products and Rockford P.O.P., please call 602- or FAX 602-967-8132.
  • Page 3: In Case Of Difficulty

    IN CASE OF DIFFICULTY PROBLEM CAUSE/CURE Short Stop 1. Speaker wires shorted or grounded to each other or car Circuit body. Activated 2. Less than 3 ohm speaker load. 3. Power ground incorrect. Recheck installation instructions. Fuse Blows 1. Power and ground wires reversed. 2.
  • Page 4 DESCRIPTION The Punch PR-250 IIR equalizer/power amplifier was designed to provide true state-of-the-art sound in cars, vans, boats or anywhere a 12 volt storage battery is available. Extensive field research using spectrum analyzer and pink noise techniques has proven that all speakers suitable for this appli- cation roll off characteristics at one or both ends of the audio spectrum.
  • Page 5: Installation

    INSTALLATION Experience has proven that only technically inclined users who have the proper tools and mechanical ability should attempt to install the unit themselves. If you do not feel confident or if you have an unusual installation situation, have the unit professionally installed. IMPORTANT: To prevent alternator and ignition noise pickup, the power and ground connections MUST be wired exactly as indicated in the Power and Ground Sections on pages 3 and 4.
  • Page 6: Power Connection

    Full range speakers or separate woofers and tweeters may be used. For optimum bass response the low frequency driver must be mounted so the sound wave radiated from the rear of the speaker cone cannot get back to the front of the speaker and cancel the front wave.
  • Page 7: Ground Connections

    GROUND CONNECTIONS Connect the black wire from The Punch to ground at the dashboard, firewall, or car body where the power amplifier is mounted. NOTE: It is extremely important to connect the ground in the above manner or ground loops will result in noise pickup. SPEAKER CONNECTIONS For wiring to 4 ohm woofers, use 18 gauge wire...
  • Page 8: Low Impedance

    LOW IMPEDANCE Radio and tape players may be wired direct from their respec- tive speaker output terminals. The advantage of this low im- pedance method is that no modification is required to the radio or tape unit. Performance will usually be quite satisfactory, although not optimum.
  • Page 10: Operating The System

    OPERATING THE SYSTEM Thanks to the automatic power switching circuit, you just turn your radio or tape player on and off in the normal way and The Punch will turn on and off automatically. In high impedance wiring, the signal to noise ratio is better when you turn the volume knob full clockwise at the radio/tape player, and control the volume at the preamp unit.
  • Page 11: Battery Drain

    BATTERY DRAIN The drain of the system while operating depends on volume level. 4 Amps average has been measured with a typical music signal. It’s safe to run several hours without engine running. If you should forget to turn the unit off, the idling current is only 3 Amp and will not normally run the battery down overnight.
  • Page 12 This warranty does not apply if the parts or labor, which would otherwise by provided without charge under this warranty, are obtained from any other source than Rockford Fosgate or an Authorized Rockford Fosgate service center.

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