Earthquake Sound P10 Manual De Usuario

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.