Rockford Fosgate 550X Installation Using Passive Crossovers, Remote Punch Bass, Speaker Impedance

Page 9

INSTALLATION

USING PASSIVE CROSSOVERS

A passive crossover is a circuit that uses capacitors and/or coils and is placed on speaker leads between the amplifier and speaker. The crossover delegates a specific range of frequencies to the speaker for optimum driver performance. A crossover network can perform one of three functions: High-Pass (capacitors), Low-Pass (inductors or coils) and Bandpass (combination of capacitor and coil).

The most commonly used passive crossover networks are 6dB/octave systems. These are easy to construct and require one component per filter. Placing this filter in series with the circuit will reduce power to the speaker by 6dB/octave above or below the crossover point depending on whether it is a high-pass or low-pass filter. More complex systems such as 12dB/octave or 18dB/octave can cause impedance problems if not professionally designed.

Passive crossovers are directly dependent upon the speaker's impedance and component value for accuracy. When passive crossover components are used in multiple speaker systems, the crossover's effect on the overall impedance should be taken into consideration along with the speaker's impedance when determining amplifier loads.

!CAUTION: These amplifiers are not recommended for impedance loads below 2Ω stereo and 4Ω bridged (mono).

L

6dB/Octave Low-Pass

C

6dB/Octave High-Pass

L = Low-Pass (Inductor)

C = High-Pass (Capacitor)

For more information, see your

Authorized Rockford Fosgate Dealer.

REMOTE PUNCH BASS

Freq.

 

Speaker Impedance

 

Hertz 2 OHMS

4 OHMS

8 OHMS

 

 

 

 

 

 

 

 

 

 

 

 

 

L

 

C

 

L

 

C

L

 

C

 

80

4.1mH

1000mF

8.2mH

500mF

16mH

250mF

100

3.1mH

800mF

6.2mH

400mF

12mH

200mF

130

2.4mH

600mF

4.7mH

300mF

10mH

150mF

200

1.6mH

400mF

3.3mH

200mF

6.8mH

100mF

260

1.2mH

300mF

2.4mH

150mF

4.7mH

 

75mF

400

.8mH

200mF

1.6mH

100mF

3.3mH

 

50mF

600

.5mH

136mF

1.0mH

 

68mF

2.0mH

 

33mF

800

.41mH

100mF

.82mH

 

50mF

1.6mH

 

26mF

1000

.31mH

 

78mF

.62mH

 

39mF

1.2mH

 

20mF

1200

.25mH

 

66mF

.51mH

 

33mF

1.0mH

 

16mF

1800

.16mH

 

44mF

.33mH

 

22mF

.68mH

 

10mF

4000

.08mH

 

20mF

.16mH

 

10mF

.33mH

 

5mF

6000

51mH

 

14mF

.10mH

6.8mF

.20mH

3.3mF

9000

34mH

 

9.5mF

68mH

4.7mF

.15mH

2.2mF

12000

25mH

 

6.6mF

51mH

3.3mF

100mH

1.6mF

 

 

 

 

 

 

 

 

 

 

 

 

Mounting and installation

1.Find a location, either under the dash or near the center console, that gives easy access to the remote.

2.Using the screws supplied, install the mounting clip with the tabs towards the back.

3.Route the cable for the remote and connect to both the remote and amplifed subwoofer.

4.Slip the remote onto the mounting clip until it snaps into place.

5.Install the decal and knob onto the remote.

Mounting

Clip

Knob

Decal

9

Image 9
Contents Channel Amplifiers Introduction Table of ContentsContents of Carton Safety InstructionsDesign Features Installation Installation Considerations Mounting LocationsEngine Compartment Battery and Charging InstallationWiring the System Trunk MountingPower Connection RCA Inputs connect to Front Signal Imput Switch set to Channel WiringMounting and installation Installation Using Passive CrossoversRemote Punch Bass Speaker ImpedanceAdjusting Crossover Frequency Operation Adjusting GainProcedure 1 Check Amplifier for proper connections TroubleshootingProcedure 2 Check Amplifier for audio output Procedure 3 Check Amplifier if you experience Turn-on PopMODEL- Power SpecificationsLimited Warranty Information What is CoveredRockford Fosgate

550X, 750X specifications

Rockford Fosgate has long been a leader in the audio industry, renowned for its innovative designs and high-quality sound products. The Rockford Fosgate 750X and 550X amplifiers are prime examples of this legacy, delivering superior performance for car audio enthusiasts.

The Rockford Fosgate 750X amplifier is particularly noted for its impressive power output, delivering up to 750 watts of peak power. This makes it ideal for powering larger subwoofers or multiple speaker setups, ensuring that users experience robust bass and clear sound in any vehicle. The amplifier features adjustable gain control, allowing users to fine-tune their system for optimal performance. Additionally, the 750X boasts a built-in variable low-pass crossover, which helps to channel the appropriate frequencies to the subwoofers, enhancing overall sound quality while minimizing distortion.

On the other hand, the Rockford Fosgate 550X amplifier offers a slightly lower power output of 550 watts. This amplifier is perfect for users who require ample power without the need for an overwhelming system. The 550X also includes adjustable gain control and a variable low-pass crossover, allowing for customization to suit individual preferences and vehicle acoustics. Both models are designed with an emphasis on ease of installation, featuring a compact design and high-quality connectors.

One of the standout technologies found in both the 750X and 550X amplifiers is the Class-D amplifier design. This technology not only improves power efficiency but also reduces heat production, making these amplifiers sustainable for long-duration use. Additionally, Rockford Fosgate incorporates their unique Power Line output, which provides reliable signal transmission without significant loss in quality.

Both amplifiers also come equipped with a robust thermal management system to prevent overheating during intense playback. Additionally, built-in circuit protection features ensure that the amplifiers remain safe during operation, offering peace of mind to users.

In summary, the Rockford Fosgate 750X and 550X amplifiers are excellent choices for car audio enthusiasts looking to enhance their sound experience. With impressive power outputs, adjustable controls, and advanced technologies, these amplifiers stand out in the competitive audio market, providing the performance and reliability that Rockford Fosgate is known for. Whether you’re a casual listener or an audio aficionado, these amplifiers are sure to satisfy your sound cravings.