Phantom Power Box Specification

Professional Audio and Process Control

Headphone Amplifier Box
Description
Specification
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Stereo Headphone Amplifier Box
Description
Specification
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When terminated with 1-2 kOhm microphone amplifier input impedance

+/- 0.25 dB from 20 Hz to 20 kHz

Less than -140 dBu from 10 Hz to 20 kHz (Note 1)
Less than -100 dBu from 10 kHz to 1MHz

Less than 0.005% from 20 Hz to 20 kHz

0 dB; -20 dB (+/- 0.5 dB)

Input Clipping Level

2 kOhms (For 100 - 600 Ohm microphones)

DC Power Feed Matching

Output Differential DC Offset

Output Differential Line Balance

Max Phantom Power Current

10 mA (Short circuit protected)

Phantom Power Voltage

48 Volts +/- 0.5 Volts

PIN 1 GROUND; PIN 2 SIGNAL; PIN 3 RETURN
See product description for unbalanced connections

PP3 Alkaline Battery Life

200 hours at 1 mA phantom power current

External DC Connector

2.5 mm Centre pin positive (Note 2)

Width 80mm; Height 45mm; Depth 135mm

300 gm including battery

Notes to specification

Measurements of dBu are dB with respect to 0.775 Volts

The unit may be operated from an external supply between 6 and 12 volts DC (maximum) at 50 mA peak. The recommended voltage is 9 volts. The supply for each unit should be fully floating and regulated

A fitted belt clip is available to special order

Two position slide switch

Microphone input and output

PP3 externally accessible

Two position slide switch

On switch on the LED should illuminate for about half a second and go out. The LED lights longer the more discharged the battery until it remains on continuously, indicating the battery is no longer serviceable and should be changed. This is also true if the LED illuminates during use. If the LED fails to illuminate at all then the battery is completely discharged.

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Conford, Liphook, Hampshire, GU30 7QW, UK
+44 (0)1428 751469
contact@confordelec.co.uk www.confordelec.co.uk/
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