Earthquake MiniMe-FF8 Manuel d'utilisateur télécharger pdf (Page 13)

Earthquake • MiniMe User Manual

Adjusting the controls

There are two main methods for adjusting the level,

crossover frequency and phase of the Earthquake

MiniMe to match a system.

? Method One: Typical: Listening and making

adjustments to suit your taste.

? Method Two: Laboratory: By measuring the

output and adjusting for a flat frequency

response.

Satisfactory results can be achieved if you make the

adjustments based on simply listening. This is

Earthquake's preferred method as it allows the system

to be voiced based on what sounds the best,

whereas laboratory-flat frequency response can often

be clinical and less than exciting.

The following procedure is for those who prefer a

more methodical and scientific approach.

You will need a test CD with low-frequency warble

tones, and a sound pressure-level meter.

Step #1

Disconnect the subwoofer and run the main speaker

with a tone in its passband (80-100Hz). Measure the

level.

Step #2

Disconnect the main speaker and reconnect the

subwoofer. Set the subwoofer to its highest crossover

frequency. Set the level control of the subwoofer to

give the same sound pressure level with the same

tone you used in Step #1.

Step #3

With both the subwoofer and the main speaker

connected, measure the level of the tones at the

available frequencies. Because the crossover is set

too high, you will have a peaked response. Adjust the

crossover control to get the smoothest response.

Step #4

Use the phase control to make the response even

smoother. It has its biggest effect at the crossover

frequency. You can iterate between the crossover and

the phases controls. Keep your hands off the level

control! It was set correctly in Step #2.

Step #5

Listen to the subwoofer. Resist all temptation to turn

up the level control. Play something with really deep

bass to confirm that your subwoofer is working.

Control settings

Use the following charts to record more desirable data

from test results.

1 2 ... 8 9 10 11 12 13 14 15 16

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Earthquake MiniMe-FF8 Manuel d'utilisateur Page 13

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