Hafler P7000 manual Resistor Chart, Butterworth Alignment Q =

Page 21

RESISTOR CHART

The following charts list the resistor values to use for common crossover frequencies.

Butterworth Alignment Q = .707

Butterworth Alignment Q = .707

1% resistors used with 0.047μF capacitors

1% resistors used with 0.022μF capacitors

 

 

 

 

 

 

 

 

 

 

 

 

 

Frequency

R1

R2

 

 

 

 

Frequency

R1

R2

 

 

20Hz

169kΩ

169kΩ

 

 

 

 

20Hz

357kΩ

357kΩ

 

 

25Hz

133kΩ

133kΩ

 

 

 

 

25Hz

287kΩ

287kΩ

 

 

30Hz

110kΩ

110kΩ

 

 

 

 

30Hz

237kΩ

237kΩ

 

 

35Hz

95.3kΩ

95.3Ω

 

 

 

 

35Hz

205kΩ

205kΩ

 

 

40Hz

84.5kΩ

84.5kΩ

 

 

 

 

40Hz

178kΩ

178kΩ

 

 

45Hz

75kΩ

75kΩ

 

 

 

 

45Hz

162kΩ

162kΩ

 

 

50Hz

68.1kΩ

68.1kΩ

 

 

 

 

50Hz

143kΩ

143kΩ

 

 

55Hz

61.9kΩ

61.9kΩ

 

 

 

 

55Hz

130kΩ

130kΩ

 

 

 

 

 

 

 

 

 

 

 

 

 

 

60Hz

56.2kΩ

56.2kΩ

 

 

 

 

60Hz

121kΩ

121kΩ

 

 

65Hz

52.3kΩ

52.3kΩ

 

 

 

 

65Hz

110kΩ

110kΩ

 

 

70Hz

48.7kΩ

48.7kΩ

 

 

 

 

70Hz

102kΩ

102kΩ

 

 

 

 

 

 

 

 

 

 

 

 

 

 

75Hz

45.3kΩ

45.3kΩ

 

 

 

 

75Hz

95.3kΩ

95.3kΩ

 

 

80Hz

42.2kΩ

42.2kΩ

 

 

 

 

80Hz

90.9kΩ

90.9kΩ

 

 

84Hz

40.2kΩ

40.2kΩ

 

 

 

 

85Hz

84.5kΩ

84.5kΩ

 

 

 

 

 

 

 

 

 

 

 

 

 

 

90Hz

37.4kΩ

37.4kΩ

 

 

 

 

90Hz

80.6kΩ

80.6kΩ

 

200Hz

16.9kΩ

16.9kΩ

 

 

 

 

200Hz

35.7kΩ

35.7kΩ

 

 

300Hz

11.3kΩ

11.3kΩ

 

 

 

 

300Hz

23.7kΩ

23.7kΩ

 

 

 

 

 

 

 

 

 

 

 

 

 

 

400Hz

8.45kΩ

8.45kΩ

 

 

 

 

400Hz

17.8kΩ

17.8kΩ

 

500Hz

6.65kΩ

6.65kΩ

 

 

 

 

500Hz

14.3kΩ

14.3kΩ

 

 

600Hz

5.62kΩ

5.62kΩ

 

 

 

 

600Hz

12.1kΩ

12.1kΩ

 

 

700Hz

4.75kΩ

4.75kΩ

 

 

 

 

700Hz

10.2kΩ

10.2kΩ

 

 

800Hz

4.22kΩ

4.22kΩ

 

 

 

 

800Hz

9.9kΩ

9.9kΩ

 

 

 

 

 

 

 

 

 

 

 

 

 

 

900Hz

3.74kΩ

3.74kΩ

 

 

 

 

900Hz

8.6kΩ

8.6kΩ

 

 

1kHz

3.40kΩ

3.40kΩ

 

 

 

 

1kHz

7.15kΩ

7.15kΩ

 

 

1.2kHz

2.8kΩ

2.8kΩ

 

 

 

 

1.2kHz

6.04kΩ

6.04kΩ

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2kHz

1.69kΩ

1.69kΩ

 

 

 

 

2.0kHz

3.57kΩ

3.57kΩ

 

 

3kHz

1.10kΩ

1.10kΩ

 

 

 

 

3.0kHz

2.37kΩ

2.37kΩ

 

 

4kHz

845Ω

845Ω

 

 

 

 

4.0kHz

1.76kΩ

1.76kΩ

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5kHz

665Ω

665Ω

 

 

 

 

5.0kHz

1.43kΩ

1.43kΩ

 

6kHz

562Ω

562Ω

 

 

 

 

6.0kHz

1.21kΩ

1.21kΩ

 

 

7kHz

487Ω

487Ω

 

 

 

 

7.0kHz

1.02kΩ

1.02kΩ

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8kHz

422Ω

422Ω

 

 

 

 

8.0kHz

909Ω

909Ω

 

To calculate the resistor value for a frequency not on the chart use the following:

3386 = R (in kΩ) for .047μf cap fo

7234 = R (in kΩ) for .022μf cap fo

1

The actual formula is: R = 2πfoc

Where: R = Ω

fo = desired crossover frequency c = capacitor in farads

ex: .047 x 10-6for .047mf cap

– 18 –

Image 21
Contents Trans Follow Instructions R F O R M a N C E Specification S B L E O F C O N T E N T S InstallationOperation Technical ReferenceT R O D U C T I O N Balanced Input 1/4 Tip Ring Sleeve InstallationBalanced Input XLR Unbalanced InputTwo-Channel Stereo Dual MonoBridged Mono E R a T I O N Stereo/Bi-AmpNormal/Bridged Clipping SignalThermal ShortC H N I C a L R E F E R E N C E Field Service ConsiderationsPC B O a R D L a Y O U T Page R T S L I S T CER-106SM P7000 Functional Block Diagram Transnova Implementation Circuit OperationFan Speed Regulation Thermal Protection Wire Color Function Terminal Amplifier Module ReplacementBuilding Custom Xcards High Pass Low Pass Full RangeButterworth Alignment Q = Resistor ChartSE R V I C E P O L I C Y a N D LI M I T E D W a R R a N T Y

P7000 specifications

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