Hollywood 24CX-3, 24CX-4, 24CX-2 owner manual Three-Way Crossover Response

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The crossover frequency of 1000 Hz is where the two lines on this graph cross over each other.

In crossovers with three or more output bands, there are two filters for each of the middle bands. A low-pass filter rolls off frequencies above a certain cutoff point. A high-pass filter rolls off frequencies below a certain cutoff point. This leaves a band of frequencies in the middle. These middle bands have two different cutoff points. Figure 6 shows the responses of the three bands of a three-way crossover.

 

20

 

 

 

 

 

 

 

 

 

 

31

62

125

250

500

1000

2000

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16000

 

0

 

 

 

 

 

 

 

 

 

 

-20

 

 

 

 

 

 

 

 

 

 

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-60

 

 

 

 

 

 

 

 

 

(dB)

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Gain

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-100

 

 

 

 

 

 

 

 

 

 

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-180

 

 

 

 

 

 

 

 

 

Frequency (Hz)

Low Output

Mid Output

High Output

Figure 6 - Three-Way Crossover Response

As you can see, a three-way crossover has two crossover points. One determines where the lows cross over to the mids, and the other determines where the mids cross over to the highs.

© 2003 TDM Audio, Inc.

Electronic Crossover Owner’s Manual

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Contents TDM Read Before Using Table of Contents Crossover Fundamentals IntroductionSignal Source Power Amplifier Passive Crossover Crossover Terminology Shows a typical active crossover configurationFilter Frequency Response Curve How Crossovers Work24 dB per Octave Filter Curve Three-Way Crossover Response Mounting the Unit in a Rack Using the Security CoverHooking Up the Crossover What You’ll NeedMaking Adapter Cables Basic Hook-Up Two-Way Operation 24CX-2 or 24CX-4Three-Way Operation 24CX-2 or 24CX-4 Four-Way or Five-Way Operation 24CX-4 Three-Way Operation 24CX-3Front Panel Controls Operating the CrossoverThree-Way Control Meanings Adjusting the Crossover FrequenciesChecking the Hookup Using the CD Horn BoostAdjusting the Input Levels Adjusting the Output LevelsTDM Option Cards Optional Output Limiters Troubleshooting and Support No Signal OutputDistortion Hertz Hum or Buzz Excessive NoiseContacting TDM 24CX-2, 24CX-4 Specifications