Rockford Fosgate X150.1 manual Using Passive Crossovers, Speaker Impedance

Page 7

INSTALLATION

!CAUTION: These amplifiers are not recommended for impedance loads below 2Ω.

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 fre- quencies 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 com- plex systems such as 12dB/octave or 18dB/octave can cause impedance problems if not professionally designed.

Passive crossovers are directly dependent upon the speak- er'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 recommend-

 

ed for impedance loads below 2Ω.

 

L

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6dB/Octave Low-Pass

6dB/Octave High-Pass

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Freq.

 

 

 

 

 

Speaker Impedance

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2 OHMS

4 OHMS

 

 

 

 

8 OHMS

Hertz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

L = Low-Pass (Inductor)

C = High-Pass (Capacitor)

For more information, see your Authorized Rockford Fosgate Dealer.

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Contents X150.1 Introduction Table of ContentsContents of Carton Safety InstructionsInstallation Design FeaturesInstallation Considerations Engine Compartment Mounting LocationsWiring the System Battery and ChargingSpeaker Impedance Using Passive CrossoversRemote Punch Bass Adjusting GainAdjusting Crossover Frequency OperationAccessories TroubleshootingSpecifications Length of Warranty Limited Warranty InformationRockford Fosgate

X150.1 specifications

The Rockford Fosgate X150.1 is an exemplary monoblock amplifier designed for car audio enthusiasts who demand power and performance without compromise. This amplifier stands out with its robust construction and advanced technologies, making it a popular choice for those looking to enhance their in-vehicle sound system.

One of the main features of the X150.1 is its power output. With a maximum power rating of 150 watts RMS at 4 ohms and 300 watts RMS at 2 ohms, this amplifier provides ample power to drive subwoofers effectively. This makes it suitable for users looking to achieve deep, rich bass that enhances their overall sound experience. Additionally, the X150.1 incorporates a high-level input feature that allows for easier integration with factory head units without the need for a line-out converter.

The design of the Rockford Fosgate X150.1 includes a sleek, compact chassis that allows for flexible installation options. It is designed to fit in tight spaces while still providing outstanding performance. The amplifier also features a built-in variable low-pass filter, which enables users to tailor the sound to their preferences by controlling the frequency range that is sent to the subwoofers. This helps to achieve precise sound reproduction, ensuring that bass notes are deep and powerful without muddiness.

Another notable characteristic of the X150.1 is its thermal protection circuit, which safeguards the amplifier from overheating during extended use. This feature is crucial for maintaining reliability and performance, especially when the amplifier is pushed to its limits. Additionally, the amplifier is equipped with a short circuit protection system, further enhancing durability and longevity.

The Rockford Fosgate reputation for high-quality audio components is well reflected in the X150.1. The amplifier includes high-performance MOSFETs that deliver increased efficiency and ensure a clean, distortion-free signal. This attention to detail highlights Rockford Fosgate's commitment to delivering products that not only sound great but also stand the test of time.

In summary, the Rockford Fosgate X150.1 is a powerful and versatile monoblock amplifier that is perfect for audiophiles seeking to elevate their vehicle’s audio system. Its extensive features, including adjustable filters, thermal and short circuit protection, and a compact design, combine to create a performance-focused product that meets the demands of discerning users. Whether you're a casual listener or a dedicated audio enthusiast, the X150.1 is sure to impress with its ability to deliver outstanding sound quality.