INSTALLATION

10.Perform a final check of the completed system wiring to ensure that all connections are accurate. Check all power and ground connections for frayed wires and loose connections which could cause problems.

NOTE: Follow the diagrams for proper signal polarity.

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

 

OR

High

(R+) Gray

Level

 

 

Input

(R–) Gray/Black

 

 

(L+) White

 

 

(L–) White/Black

 

 

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.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L

 

 

 

 

 

 

 

 

 

 

C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6dB/Octave Low-Pass

 

6dB/Octave High-Pass

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L = Low-Pass (Inductor)

C = High-Pass (Capacitor)

For more information, see your Authorized Rockford

Fosgate Dealer.

7

Page 7
Image 7
Rockford Fosgate Mono Amplifier manual Speaker Impedance, Using Passive Crossovers

Mono Amplifier specifications

Rockford Fosgate is a name synonymous with high-quality automotive audio systems, and their mono amplifiers are among the best in the market for bass lovers. Designed to deliver powerful performance, these amplifiers provide an exceptional audio experience that elevates your music to a whole new level.

One of the standout features of Rockford Fosgate mono amplifiers is their impressive power output. These amplifiers are engineered to handle substantial power levels, making them perfect for driving subwoofers. The robust MOSFET power supply ensures efficient operation, allowing for maximum output without compromising on sound quality. This results in deep, rich bass that is sure to impress even the most discerning audiophiles.

Rockford Fosgate employs advanced technologies in their mono amplifiers to enhance performance further. The use of Class D topology is a prime example; this design is highly efficient and minimizes heat production. As a result, users can enjoy extended listening sessions without worrying about overheating or excessive power drain. This efficiency also translates to a lighter weight, making installation more straightforward and flexible.

Another notable characteristic is the inclusion of variable low-pass filters (LPF), allowing users to tailor the audio output according to their preferences. With adjustable settings, you can fine-tune the crossover frequency, ensuring that your subwoofers receive the right frequencies for optimal performance. Additionally, many models come with a built-in bass boost feature, allowing users to amplify specific bass frequencies for extra impact.

Durability is also a key aspect of Rockford Fosgate’s mono amplifiers. Constructed with high-quality materials, these amplifiers are designed to withstand the rigors of automotive environments. Features like a full-onboard protection circuit safeguard against overheating, short circuits, and overloading, ensuring longevity and reliability.

Incorporating the latest technologies, Rockford Fosgate mono amplifiers often feature remote bass level control. This handy feature allows users to adjust bass levels on the fly without needing to access the amplifier directly. This flexibility is ideal for those who wish to fine-tune their audio input based on listener preferences or track variations.

In summary, Rockford Fosgate mono amplifiers stand out due to their exceptional power output, efficient Class D topology, customizable audio settings, and durable build quality. These characteristics make them a popular choice for audio enthusiasts looking to enhance their in-car listening experience. Whether you are a casual listener or a dedicated audiophile, these amplifiers offer the power and versatility needed to bring your music to life.