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Specifications – PASCO WA-9900 Open Speaker User Manual

Page 6

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®

Model No. WA-9900

Open Speaker

5

3. Ask students to adjust the Resonance Tube such that a 50 cm closed

tube is created.

4. Have students start at a frequency of 50 Hz and increase until they

find four different resonant frequencies. Ask students to look for a
pattern in the data.

5. Increase the length of the closed tube to 100 cm and repeat step 4.

Have students compare/contrast their data from the two different
length tubes.

6. Remove the inner tube from the Economy Resonance Tube and

repeat the experiment. Have students compare/contrast their data
for the open and closed tubes.

Specifications:

Open Speaker

Frequency range:

80-80,000 Hz

Diameter:

5 1/4” woofer

Maximum power:

60 Watts

Sensitivity:

85 dB

Impedance:

8 Ohms

Figure 1: Placement of Resonance Tube relative
to the Open Speaker