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PRE420 Instruction Manual – rev. E Page 17

Performance Graphs

Frequency Response

Audio Precision

02/19/07 11:33:00PRE420 - Frequency Response

ColorSweep Trace Line Style Thick Data Axis Comment

1 1 Red Solid 4 Anlr.Level A Left HP Filter Off

-3

-2.8

-2.6

-2.4

-2.2

-2

-1.8

-1.6

-1.4

-1.2

-1

-0.8

-0.6

-0.4

-0.2

+0.2

+0.4

+0.6

+0.8

+1.2

+1.4

+1.6

+1.8

+2.2

+2.4

+2.6

+2.8

10 200k20 50 100 200 500 1k 2k 5k 10k 20k 50k 100k

The above graph shows the frequency response of the PRE420 with the 40 Hz high-pass filter off.

The amplitude response measures -0.020 dB at 10 Hz and -0.165 dB at 200 kHz. The bass

response extends well below the 10-Hz limitation of the test equipment, and the high-frequency

response extends well above the 200 kHz limit of the test equipment.

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Benchmark MPA1 Bedienerhandbuch Seite 17