Frye FP35 Manual

A SERVICE OF

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Real-Ear Measurements 113

Note: If you are using a 90 dB signal, the 12 inch distance is very important. If

the client is too far away, a message box will open, alerting you to move the cli-

ent closer. Don’t forget to relevel for the client’s new position.

5.2.2 Internal Speaker Setup

The technique for converting the FP35 analyzer’s internal sound chamber into

a sound field speaker to use for real-ear measurements is described in this sec-

tion.

Removing the speaker from the FP35 compartment

• Openthesoundchamberlid.Dothisbypressingdownonthemetallatch

at the front of the sound chamber lid.

• Liftthespeakeroutofthecompartment.

Installing the speaker on the extension pole

• Locatetheextensionpoleattherightsideofthecompartment.Remove

the pole and place the wide end in the hole at the bottom, right corner of

the sound chamber.

• Placethespeakeronthetaperedendofthepole.Ifthespeakerdoesnot

reach your client’s ear height, you may want to add an optional extension

pole that raises the speaker by an additional 6.5 inches (16.51 cm).

• PositiontheFP35atoneedgeofatable.Thespeakercanberotatedso

that the correct angle for testing is easily achieved.

Figure 5.2.2—Internal sound field speaker setup

Replacing the speaker when the test is complete

• Removethespeakerfromthepole.

• Liftthepoleoutofitsholeandreturnittotherightsideofthecompart-

ment. You must first slide one end of the pole into the notch toward the

front of the FP35 analyzer. The pole will then fit easily onto the ledge.