Rockford Fosgate 250.2 manual Xcard Resistor Chart

Page 18

XCARD RESISTOR CHART

Our tests have shown that using 0.047μf capacitors for frequencies below 100Hz, and 0.022mf capacitors for frequencies above 100Hz, result in more linear crossover control. Refer to the Specifications page to determine the capacitor value of each supplied XCard.

AO

DP

VE

AR

A N T C I E O

D N

Butterworth Alignment Q = .707

1% resistors used with 0.047mF capacitors

 

Frequency

R1

R2

 

 

 

 

20Hz

169kΩ

169kΩ

 

 

25Hz

133kΩ

133kΩ

 

 

 

 

 

 

 

30Hz

110kΩ

110kΩ

 

 

35Hz

95.3kΩ

95.3kΩ

 

 

 

 

 

 

 

40Hz

84.5kΩ

84.5kΩ

 

 

 

 

 

 

 

45Hz

75kΩ

75kΩ

 

 

50Hz

68.1kΩ

68.1kΩ

 

 

55Hz

61.9kΩ

61.9kΩ

 

 

 

 

 

 

 

60Hz

56.2kΩ

56.2kΩ

 

 

 

 

 

 

 

65Hz

52.3kΩ

52.3kΩ

 

 

70Hz

48.7kΩ

48.7kΩ

 

 

 

 

 

 

 

75Hz

45.3kΩ

45.3kΩ

 

 

 

 

 

 

 

80Hz

42.2kΩ

42.2kΩ

 

 

85Hz

40.2kΩ

40.2kΩ

 

 

 

 

 

 

 

90Hz

37.4kΩ

37.4kΩ

 

 

 

 

 

 

 

200Hz

16.9kΩ

16.9kΩ

 

 

300Hz

11.3kΩ

11.3kΩ

 

 

 

 

 

 

 

400Hz

8.45kΩ

8.45kΩ

 

 

500Hz

6.65kΩ

6.65kΩ

 

 

600Hz

5.62kΩ

5.62kΩ

 

 

 

 

 

 

 

700Hz

4.75kΩ

4.75kΩ

 

 

800Hz

4.22kΩ

4.22kΩ

 

 

900Hz

3.74kΩ

3.74kΩ

 

 

 

 

 

 

 

1.0kHz

3.40kΩ

3.40kΩ

 

 

 

 

 

 

 

1.2kHz

2.80kΩ

2.80kΩ

 

 

 

 

 

 

 

2kHz

1.69kΩ

1.69kΩ

 

 

 

 

 

 

 

3kHz

1.10kΩ

1.10kΩ

 

 

4kHz

845Ω

845Ω

 

 

5kHz

665Ω

665Ω

 

 

 

 

 

 

 

6kHz

562Ω

562Ω

 

 

7kHz

487Ω

487Ω

 

 

 

 

 

 

 

8kHz

422Ω

422Ω

 

 

 

 

 

 

 

 

 

 

 

Butterworth Alignment Q = .707

1% resistors used with 0.022mF capacitors

 

Frequency

R1

R2

 

 

 

 

20Hz

357kΩ

357kΩ

 

 

 

 

 

 

 

 

25Hz

287kΩ

287kΩ

 

 

 

 

 

 

 

 

30Hz

237kΩ

237kΩ

 

 

 

 

 

 

 

35Hz

205kΩ

205kΩ

 

 

 

 

 

 

 

40Hz

178kΩ

178kΩ

 

 

 

 

 

 

 

45Hz

162kΩ

162kΩ

 

 

 

 

 

 

 

50Hz

143kΩ

143kΩ

 

 

 

 

 

 

 

55Hz

130kΩ

130kΩ

 

 

 

 

 

 

 

60Hz

121kΩ

121kΩ

 

 

 

 

 

 

 

 

65Hz

110kΩ

110kΩ

 

 

 

 

 

 

 

70Hz

102kΩ

102kΩ

 

 

 

 

 

 

 

75Hz

95.3kΩ

95.3kΩ

 

 

 

 

 

 

 

80Hz

90.9kΩ

90.9kΩ

 

 

 

 

 

 

 

85Hz

84.5kΩ

84.5kΩ

 

 

 

 

 

 

 

90Hz

80.6kΩ

80.6kΩ

 

 

 

 

 

 

 

 

200Hz

35.7kΩ

35.7kΩ

 

 

 

 

 

 

 

300Hz

23.7kΩ

23.7kΩ

 

 

 

 

 

 

 

400Hz

17.8kΩ

17.8kΩ

 

 

 

 

 

 

 

500Hz

14.3kΩ

14.3kΩ

 

 

 

 

 

 

 

600Hz

12.1kΩ

12.1kΩ

 

 

 

 

 

 

 

700Hz

10.2kΩ

10.2kΩ

 

 

 

800Hz

9.9kΩ

9.9kΩ

 

 

 

 

 

 

 

900Hz

86kΩ

86kΩ

 

 

 

 

 

 

 

 

1.0kHz

7.15kΩ

7.15kΩ

 

 

 

 

 

 

 

1.2kHz

6.04kΩ

6.04kΩ

 

 

 

 

 

 

 

2.0kHz

3.57kΩ

3.57kΩ

 

 

 

 

 

 

 

 

3.0kHz

2.37kΩ

2.37kΩ

 

 

4.0kHz

1.76kΩ

1.76kΩ

 

 

5.0kHz

1.43kΩ

1.43kΩ

 

 

 

 

 

 

 

6.0kHz

1.21kΩ

1.21kΩ

 

 

7.0kHz

10.2kΩ

10.2kΩ

 

 

 

 

 

 

 

8.0kHz

909Ω

909Ω

 

 

 

 

 

 

 

 

 

 

 

 

 

– 15 –

Image 18
Contents Punch Practice Safe Sound Serial Number Model NumberTable of Contents T T I N G S TA R T E DPunch Amplifier Accessory Pack Introduction to 250 SeriesTechnical Design Features Transnova TRANSconductance NOdal Voltage AmplifierStereo Pass-Thru Balanced Line Inputs Result Quiet transmission of audio from source to amplifierDesign Features 250 Mono 1AMPLIFIER Installation Considerations Tools NeededBattery and Charging Mounting Location SWiring the System Using Passive Crossovers Table of Crossover Component Values 6dB/Octave High-Pass and Low-Pass Filters3386 Using the XcardCustomizing the Xcard 7234Xcard Resistor Chart Installation Power Connections Option #1Power Connections Option #2 Stereo Operation Stereo/Mono OperationBridged Operation EZ-Bridged OperationUsing the 250.2 Signal Switching Network AmplifierXCard not required Uses output from XCard Pass-Thruuses output from XCard Pass Thru XCard Audiophile Bypass the Pass-Thru Using the 250.2 Balanced Line Inputs Connecting the BLTDisconnect Speakers from AC Voltmeter set to AC VoltsKeep ground connections as close to each other as possible Mono Operation Stereo Operation using two Punch 250.1 Power Amplifiers 250 #1 250 #2XCard 250.1 #1/#2 set to Full Range Bridged Mono Operation US I N G T H E 250.1 Signal SW I T C H I N G NE T W O R K Audiophile BypassConfigure a 12dB per octave filter for Xover is set to 12dB Pass-Thruhas Full Range output onlyConfigure a 24dB per octave filter for the 250 System Diagrams Total Power Delivery RMSWatt System rated @ 4 ohms Woofers 12dB/octave HP12dB/octave BP Total Power Delivery RMS Tweeters 450 Rockford Fosgate Accessories Balanced Line Transmitter FG-BLTEnergy Storage Capacitors XCard CrossoversRecommended capacitance is 1 farad per 1000 watts Amplifier does not turn on TroubleshootingSymptom Diagnosis Remedy Amplifier has no soundAmplifier Noise Speaker Output LowOr Distorted No output from Pass-ThruSource unit output too low Repair or replace original source as NeededQuick Check for Troubleshooting CAR Audio Systems Autosound 2000sTime for Processors Monthly magazine for the technically inclinedDynamic Power Measurements Specifications Watts1420 420 Watts710 Watts 500 WattsLimited Warranty Information R M a T I O N Introducción Ubicación DE LOS AmplificadoresEspañol Operación mono/estéreoIntroduction MontageOpération stéréo/mono Tri- mode Einleitung EinbauortLinken Phasen Schalter auf 0 stellen Stereo/Mono BetriebTerminale B+ cavo positivo IntroduzioneDove Posizionarlo Terminale GND cavo negativoStereo/Mono Operation Fase sinistra dellinterruttore posizionata suMade in the USA

250.2 specifications

The Rockford Fosgate 250.2 is a powerful and versatile car amplifier known for its performance and reliability. As part of Rockford Fosgate’s renowned line of audio equipment, the 250.2 is engineered to enhance the listening experience in vehicles, providing a fantastic balance of power, clarity, and durability.

This amplifier delivers an impressive 250 watts of power, making it suitable for both beginner audiophiles and seasoned enthusiasts who seek to elevate their car audio system. The 250.2 is a two-channel amplifier, which means it can power two speakers or one subwoofer. Utilizing a class A/B topology, it ensures high efficiency while minimizing distortion, resulting in clean and powerful audio output.

One of the standout features of the Rockford Fosgate 250.2 is its Signal Sense turn-on technology. This feature allows the amplifier to automatically turn on when it detects a signal from the head unit, eliminating the need for a manual switch. Additionally, the built-in remote gain control allows users to adjust the amplifier’s output level easily, providing a customizable audio experience tailored to their preferences.

The 250.2 is equipped with an adjustable crossover that can be set to high-pass, low-pass, or full-range modes. This flexibility permits users to fine-tune the frequencies sent to their speakers, optimizing sound quality and performance. Further enhancing its capabilities, the amplifier also includes built-in variable bass boost that allows users to amplify low frequencies for a more impactful bass response.

Constructed with a durable aluminum heatsink, the Rockford Fosgate 250.2 maintains optimal temperature during operation, ensuring long-lasting performance and minimizing thermal issues. The amplifier also features RCA inputs, making it compatible with a wide range of audio sources, enhancing its versatility for various setups.

In summary, the Rockford Fosgate 250.2 is a reliable and robust car amplifier that combines high power output with advanced technologies and user-friendly features. Its efficient design, customizable settings, and quality construction make it an excellent choice for anyone looking to improve their vehicle's sound system. Whether for day-to-day driving or road trips, the Rockford Fosgate 250.2 provides an audio experience that is both powerful and enjoyable, reinforcing Rockford Fosgate's reputation as a leader in the car audio industry.