Line Matching Transformer, Low Impedance Male XLR to High Impedance MC1M Connector with Mating 1/4-inch Phone Plug/Jack.
This reversible transformer matches low- or high-impedance microphones to high- or low-impedance inputs. The transformer permits use of very long microphone cables with either low- or high-impedance microphones. However, when connecting a high-impedance microphone, limit the cable length between the microphone and the transformer to 4.6 m (15 foot). The cable from the transformer to the low-impedance input can be any desired length.
The transformer prevents high-frequency loss, level loss, and pickup of noise and hum. The A95U comes furnished with a three-pin XLR connector on the low-impedance end, with a 1/4 inch phone plug and phone jack adapter on the high-impedance end.
Frequency Response: Flat, 20 Hz to 20 kHz. Response at 20 Hz no more than 3 dB down from flat.
Impedance: Low impedance: 75 to 300 ohms (supplied) or 19 to 75 ohms, Medium impedance: High (41 k ohms with 150-ohm source on 75-to-300 ohm winding.)
DC Resistance: Low impedance : 75 to 300 ohms - 75 ohms, 19 to 75 ohms - 37.5 ohms, High impedance : 4300 ohms
Voltage Ratio: Low impedance to high impedance: +28 dB(19 to 75 ohms), +22 dB(75 to 300 ohms), High impedance to low impedance: -28 dB(19 to 75 ohms), -22 dB(75 to 300 ohms)
Maximum Recommended Input Levels: Source Impedance | Winding Being Driven | Maximum Level
33 ohms | 19 to 75 ohms | 0.5 V, 200 ohms | 75 to 300 ohms | 1.0 V, 600 ohms | High impedance | 10 V
5,000 ohms | High impedance | 10 V, 33,000 ohms | High impedance | 10 V
Case: Full magnetic shield, steel with gray enamel finish
Dimensions: 19 mm (3/4 in.) diameter; 89 mm (31/2 in.) long without adapters