Table of Contents
Advertisement
Advertisement
Table of Contents
Related Manuals for Rockford Fosgate POWER 650 MOSFET
Summary of Contents for Rockford Fosgate POWER 650 MOSFET
- Page 1 POWER 650 MOSFET P O W E R A M P L I F I E R AMPLIFIER...
-
Page 2: Table Of Contents
Amplifier Power 650 MOSFET Specifications ..... . Biamplified Stereo Mode Wiring Diagram ....22 Biamplified Stereo Diagram . -
Page 3: Introduction
INTRODUCTION The Power 650 MOSFET is a high-performance four-channel power amplifier for cars, vans, or wherever a 12-volt battery is available. It is designed to be used with a Rockford-Fosgate equalizer/pre-amplifier and/or high-quality radio, tape player, compact disc player, or other music source. -
Page 4: Amplifier Features
POWER 650 MOSFET FEATURES The Power 650 MOSFET amplifier combines a number of capabilities that make highest-performance amplifier the road. 650 Watts total power (stereo mode, 4-Ohm loads) 4-, 3-, or 2-channel operation, biamplified or stereo Rugged and fast MOSFET design... -
Page 5: System Flexibility
SYSTEM FLEXIBILITY A combination of switched crossovers and four bridgeable channels in the Power 650 MOSFET provides unmatched system flexibility with simple wiring changes. Some of the possibilities are: Biamplified Stereo - A pair of channels drives mid and high frequency speakers;... -
Page 6: Speaker Impedance
This provides the out- of-phase drives required for bridged operation. The Power 650 MOSFET is designed so that the four amplifier sections can be bridged in several ways. Right High and Left High-Frequency channels can be bridged, the Right Low and... -
Page 7: Amplifier Block Diagram
C o n n INPUTS POWER 650 MOSFET AMPLIFIER BLOCK DIAGRAM... -
Page 8: Why Biamplify
MOSFET is also very tolerant of reactive loads, so complex multiple-element passive crossover systems should pose no problems if well-designed. WHY BIAMPLIFY? performance. For the Biamplified systems can play cleanly at higher output levels than stereo systems of the same total power. -
Page 9: Speaker Power Ratings
SPEAKER POWER RATINGS The Power 650 MOSFET is a very high-powered amplifier, and special care must be taken to be sure that the speakers can handle the power level. Speaker manufacturers’ recommenda- tions for power levels and crossover frequencies should be observed. -
Page 10: Speaker Fusing
(See “Passive Crossovers” section of this booklet.) SPEAKER FUSING The Power 650 MOSFET is provided with in-line fuses for speaker protection. These fuses should always be fast blow types and should be selected on the basis of the speaker’s power handling capacity. -
Page 11: Crossover System
CROSSOVER SYSTEM The Power 650 MOSFET incorporates separate high- and low- frequency crossovers, which controlled screwdriver-slot switches on one end of the power amplifier. The crossover frequency is set to one of five frequencies or to flat response, depending speaker system characteristics. -
Page 12: Typical Crossover Settings
In biamplified systems, the low-frequency crossovers remove midrange and high frequencies from the woofer amplifiers, and the high crossovers remove bass energy from the midrange/ tweeter amplifiers. The exact settings depend on system design. The low frequency crossover should be set low enough to reduce resonance present in small enclosed spaces like vehicle interiors. -
Page 13: Crossover Response Curves
Summed Output Power -- Flat output - 1 2 - 1 5 BOTH CROSSOVERS SET EQUAL (250 Hertz) Output - 6 -_ -9 -- -12.- Frequency, Hertz Frequency, Hertz CROSSOVERS OVERLAPPED (Low 250 Hertz, High 100 Hertz) CROSSOVER RESPONSE CURVES -11 -... -
Page 14: Amplifier Power Wiring
AMPLIFIER POWER WIRING The Power 650 MOSFET battery power connections are made with heavy oil- and gas-resistant 8-Gauge wire. A self-resetting 50-Ampere circuit breaker and connectors are provided with the unit. -
Page 15: Din Interconnect Cable
Power Amplifier Female Connector INPUT MODE SWITCH The input of the Power 650 MOSFET normally comes from the DIN input connector and is split by the crossovers into high and low channel drives. However, there are some cases where it is desirable to be able to drive the low channels independently. -
Page 16: Battery And Charging System
BATTERY AND CHARGING SYSTEM The Power 650 MOSFET amplifier draws enough current to put a substantial additional demand on automotive electrical systems. When played very loudly, the 650 MOSFET may draw... - Page 17 (or halving) of drive frequency. In view of the high power capacity of the Power 650 MOSFET, this may be inadequate to prevent damage to sensitive speakers (especially tweeters). Double-...
-
Page 19: Db/Octave Crossovers
---I 12 dB/Octave Low Pass 12 dB/Octave High Pass Speaker Impedance Frequency Hertz Ohms Ohms Ohms 680 uF 11 mH 330 uF 22 mH 180 uF 9.1 mH 270 uF 18 mH 150 uF 400 uF 6.8 mH 200 uF 15 mH 100 uF 4.7 mH... -
Page 20: Db/Octave Crossovers
18 dB/Octave High Pass Speaker Impedance Frequency 8 Ohms Ohms Hertz 330 uF 6.0 mH 1000 160 uF 12 mH 500 UF 10 mH 270 uF 4.7 mH 800 uF 200 uF 3.9 mH 600 uF 7.5 mH 300 UF 400 UF 5.4 mH 2 . -
Page 21: Turn On Connection
MOUNTING THE POWER 650 MOSFET Since the Power 650 MOSFET has forced-air cooling rather than relying on convection, it can be mounted anywhere and in any position it will fit. The only requirement is that the fan intake and... -
Page 22: Power 650 Mosfet Specifications
Note: Achieving ultimate performance from Rockford Fosgate products is our main concern. Therefore research and development of a new product doesn’t end when it finally reaches production. For this reason Rockford’s specifications are subject to change without notice. -2o-... - Page 23 Noise: Less than -8OdB both power amp and preamp. Crossover: 12dB/Octave, switch controlled. Crossover Frequencies: High Channel Low Channel Flat Fiat 70 Hz 140 Hz 100 Hz 200 Hz 280 Hz 140 Hz 200 Hz 400 Hz 280 Hz 560 Hz Preamp Sensitivity: 50Mv to 2.5V adjustable.
-
Page 24: Biamplified Stereo Mode Wiring Diagram
RIGHT LOW CHAN. P O W E R WOOFER 6 5 0 MOSFET BLACK 8 -GAUGE TO CHASSIS GROUND WHITE 8 -GAUGE-TO BATTERY POSITIVE TERMINAL CIRCUIT BREAKER POWER 650 MOSFET STEREO BIAMPLIFIED MODE HIGH AND LOW CROSSOVERS ACCORDINGLY - 22 -... -
Page 25: Biamplified Stereo Diagram
Right Low Right High Channel Channel Channel Channel 1 Power 650 MOSFET 9-Pin Connector NOTES: L o w crossovers set to 70, 100 or 140 Hertz H i g h crossovers set t o 140, 200, 2 8 0 Hertz. -
Page 26: Biamplified Stereo Bridged Mono Woofer Diagram
C h a n n e l 1 C h a n n e l 1 Channel 1 Channel 1 Power 650 MOSFET 9-Pin Connector NOTES: L o w crossovers set t o 70, 100 or 140 Hertz. H i g h crossovers set to 140, 200 or 280 Hertz. -
Page 28: Bridged Stereo Diagram
Notes: Both High and Low Crossovers set to “Flat” position. BRIDGED STEREO... -
Page 29: Bridged Mono Biamplified Diagram
Midrange/ Tweeters Woofers High High Channel Channel Channel Channel Power 650 MOSFET #1 Power 650 MOSFET #2 9-Pin Connector 9-Pin Connector NOTES: Low crossovers set to 70, 100 or 140 Hertz High crossovers set to 140, 200 or 280 Hertz.