CLIOwin 6.5 PCI User's Manual - Audiomatica Srl

We set the impedance to 8 ohm as this is the nominal impedance of the tweeter. Clicking
Ok we obtain Fig.10.35, which is the final result.
110.0
CLIO
180.0
dBSPL
Deg
100.0 108.0
90.0 36.0
80.0 -36.0
70.0 -108.0
60.0 -180.0
20 Hz
100 1k 10k 20k
Figure 10.35
Our last example will cover the merge function. When we measured the system of
Fig.10.17 we stated that the lower frequency limit that had to be considered reliable was
208Hz. We can easily overcome this limit taking another measurement with the nearfield
technique and merge the result with the data of Fig.10.17. Doing near-field
measurement you should readjust the output level so that the maximum sound
pressure does not exceed 110dBSPL as this prevent Microphone overload problems.
Fig.10.36 shows both the near-field and far-field response. Notice the big level
difference. To merge them the far-field should be the one in memory. Fig.10.37 shows
the Merge Dialog with a transition frequency set to 350Hz.
120.0
CLIO
180.0
dBSPL
Deg
110.0 108.0
100.0 36.0
90.0 -36.0
80.0 -108.0
70.0 -180.0
20 Hz
100 1k 10k 20k
Figure 10.36 and 10.37
Fig.10.38 shows the merged response. Notice that the near-field measurement level
has been scaled to the far-field one. Two very important functions, cv function and ci
function, are explained in Chapter 13 as they are impedance tools.
110.0
CLIO
180.0
dBSPL
Deg
100.0 108.0
90.0 36.0
80.0 -36.0
70.0 -108.0
60.0 -180.0
20 Hz
100 1k 10k 20k
Chapter 10 - MLS Figure 10.38
103