Mce325 specifications, General, Microphone preamplifier – Telex MCE325 User Manual

Page 13: Headphone amplifier, Speaker amplifier, Power and mechanical, Mce325 specifications -5

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MCE325 Specifications

General

Bridging Impedance (to line)

10,000 ohms typical

Noise Contribution to 200-ohm Line

-90 dBu

Call Signal Frequency

20 kHz, crystal controlled

Talk-off Frequency

24 kHz, crystal controlled

Microphone Preamplifier

Maximum Voltage Gain

54 dB

Frequency Response

100 Hz to 8,000 Hz, ±3 dB

Input Impedance

1,000 ohms

Limiter Range

30 dB

Headphone Amplifier

Maximum Voltage Gain

30 dB

Frequency Response

100 Hz to 8,000 Hz, ±3 dB

Headphone Impedance

50 to 600 ohms

Output Power

150 mW into 50 ohms

Output Voltage Level

8 Vp-p

Speaker Amplifier

Maximum Voltage Gain

30 dB

Frequency Response

100 Hz to 8,000 Hz, ±3 dB

Speaker Impedance

8 to 16 ohms

Output Power per Amplifier

5W into 8 ohms

Output Voltage Level

16 Vp-p

Power and Mechanical

Power Requirements

115 to 230 VAC, 20 VA max,
12 to 25 VDC, 100 to 125 mA quiescent, 900 mA max

Dimensions

1.72” H x 8.2” W x 8” D (44 mm x 208 mm x 203 mm)

Weight

4.25 lbs (1.93kg)

Material/Finish

Thermo-plastic front panel, aluminum case, light gray

finish

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