Rockford Fosgate 250.1 manual Xca R D Resistor Chart, Butterworth Alignment Q =

Page 18
XCA R D RESISTOR CHART

XCA R D RESISTOR CHART

Our tests have shown that using 0.047∝ f capacitors for frequencies below 100Hz, and 0.022∝ f 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 0.047∝ F 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 0.022∝ F 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 –

Page 17 Page 19
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Page 17 Page 19
Contents power powerpower 250.1PRACTICE SAFE SOUND TA B L E O F CO N T E N T S G E T T I N G S T A R T E DPunch Power INTRODUCTION TO 250 SERIESPunch Power TOPAZ Tracking Operation Pre-AmplifierZone TECHNICAL DESIGN FEATURESDIABLO Dynamically Invariant A-BLinear Operation trans nova circuitryStereo Pass-Thru DSM Discrete Surface Mount TechnologyXCard Internal Crossover Balanced Line Inputs NOMAD NOn-MultiplyingAdvanced DecisionITS Increased Thermal Stability 250.2 DE S I G N FE AT U R E S PLIFIER 250.1 DE S I G N FE AT U R E S 1AMPLIFIER INSTALLATION CONSIDERATIONS Tools NeededPassenger Compartment Mounting BATTERY AND CHARGINGTrunk Mounting Engine Compartment MountingW I R I N G T H E S Y S T E M USING PASSIVE CROSSOVERS 6 dB/Octave Low-Pass TABLE OF CROSSOVER COMPONENT VALUES6 dB/Octave High-Pass FreqHigh-Pass US I N G T H E XCARDCU S T O M I Z I N G T H E XCA R D Low-Pass1% resistors used with 0.047∝ F capacitors XCA R D RESISTOR CHARTButterworth Alignment Q = Butterworth Alignment Q =250.2 INSTALLATION 250.2 Power Connections Option #1250.2 Power Connections Option #2 Left Phase Switch set to Stereo OperationStereo/Mono Operation Right Phase Switch set toLeft Phase Switch set to Bridged OperationEZ-BridgedOperation Right Phase Switch set toPage XCard not required 250.2 uses output from XCard Pass-Thru uses output from XCardPage filterfor Configurea12dBperConfigurea24dBperoctave and“AudiophileBypass”the Pass-ThruUSING THE 250.2 BALANCED LINE INPUTS Connecting the BLTPerformance Characteristics Level Setting the BLT8.0 VAC Disconnect Speakers from the250.1 INSTALLATION 250.1 Power Connections Option #1250.1 Power Connections Option #2 Mono Operation Phase Switch set tominimum AmplifiersPower orFullRangeStereo/Mono Operation Impedanceforeachstereochannelshouldbe2Ω minimumImpedanceforbridgedchannelshouldbe4Ω minimum Impedanceforbridgedchannelshouldbe4Ω Bridged Mono Operationminimum Pass,-High -LoworPass RangeFullU S I N G T H E 250.1 SIGNAL S W I T C H I N G N E T W O R K“Audiophile Bypass” the LOUD Configure a 12dB per octave filter for theXCard TUNEConfigure a 24dB per octave filter for the SY S T E M DI A G R A M S 250 Watt System rated @ 4 ohmsTotal Power Delivery RMS 500 Watt System rated @ 4 ohms Total Power Delivery RMSTweeters 750 Watt System rated @ 4 ohmsTotal Power Delivery RMS 450 WattsTweeters 1000 Watt System rated @ 4 ohmsTotal Power Delivery RMS WattsROCKFORD FOSGATE ACCESSORIES NOISEBalanced Line Transmitter FG-BLT Channel A monitors left channel Punch Status Display FG-PSDPunch Status Display connected to one Channel B monitors right channelXCard Crossovers punchEnergy Storage Capacitors 1.0capDiagnosis SymptomTR O U B L E S H O O T I N G RemedyRemedy SymptomDiagnosis Speaker Output LowRemedy SymptomDiagnosis Low or distorted output fromPreface QUICK CHECK FOR TROUBLESHOOTING CAR AUDIO SYSTEMSAUTOSOUND 2000s Noise OverviewTime for Processors SummationWhat is an Amplifier? DY N A M I C PO W E R ME A S U R E M E N T SAbout the Dynamic Power Measurements Music180Watts 310Watts 620Watts 125Watts 225Watts 250.2 SP E C I F I C AT I O N SSpecifications subject to change without notice 450 Watts420Watts 710Watts 1420 Watts 250Watts 500 Watts 250.1 SP E C I F I C AT I O N SSpecifications subject to change without notice 1000 WattsWhat is Covered LIMITED WA R R A N T Y IN F O R M AT I O NLength of Warranty What is Not CoveredN F O R M A T I O N Maletero INTRODUCCIÓNUBICACIÓN DE LOS AMPLIFICADORES HabitáculoOperación mono/estéreo MONTAGE InstallationINTRODUCTION Montage dans le coffrePage DEUTSCH EINLEITUNGEINBAUORT Im FahrzeugkofferraumLinken Phasen Schalter auf 0 stellen Stereo/Mono BetriebDOVE POSIZIONARLO InstallazioneINTRODUZIONE ITALIANOStereo/Mono Operation Fase sinistra dellinterruttore posizionata suMADE IN THE USA
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