Specifications

EAW Smaart 6 Operation Manual Applications

4.4 Measuring a Loudspeaker and Setting an

Equalizer

This example combines the techniques used in Measuring an Analog Equalizer and

Measuring a Loudspeaker. We will measure the frequency response of a loudspeaker

then configure an equalizer to optimize its performance.

Connect the following components as shown in Figure 4-10:

• Signal source (e.g., CD/digital media player or an output from your computer)

• Amplifier and loudspeaker

• Measurement microphone (and mic preamp if mic needs phantom power)

• Equalizer – May be parametric or graphic, digital or analog. We strongly

recommend parametric equalizers for sound system frequency response tuning

because they allow setting each filter to the proper bandwidth.

• Cables and adapters to make the required connections, including one Y-cable

• Stereo mixer (optional but highly recommended)

Figure 4-10 Setup to measure and equalize a loudspeaker

The addition of a mixer allows quickly switching between measurement of the loudspeaker

and equalizer. You could accomplish the same thing by repatching cables or, if your

computer has a multichannel audio interface, bringing the two measurements signals into

separate input channels and switching between them in Smaart. If using a mixer, be sure to

pan the reference signal input channel (signal A in Figure 4-10) all the way right and pan

the channels for the two measurement signal points (signals B and C) all the way left.

Signal

Source

Equalizer Amplifier

Loudspeaker

easu

Micro

hon

Measurement

System Mixer

A (Source Signal)

B or C (EQ Output or Measurement Mic.)

Computer