Z MATCHING TRANSFORMERS

1. 9144
2. 9244

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Series 9000 Line Matching Transformers offer low-loss interconnections between high and low impedance equipment. Exclusive mu-metal shielding protects against spurious electrostatic and RF fields. Units are bi-directional and can be used as follows:

* Low to hi, such as professional low impedance microphones to high impedance amplifiers. Stereos, cassette recorders, public address systems, and mixers.

* Hi to low, such as high impedance microphones or electronic instruments to low impedance amplifiers or mixers.

Designed to mate with Switchcraft Q-G^® connectors. Available with various terminations; see chart.

SPECIFYING FEATURES

* Plug-in impedance changes

* Fully wired

* Connections bi-directional (low to high impedance or high to low impedance)

* Rugged die-cast housings

* Mu-metal shielding

MATERIAL SPECIFICATIONS

Shell: Die-cast zinc shell, nickel-plated with black non-glare metalized foil label.

Shielding: Mu-metal.

Dimensions: Diameter--.75 inch (19.05 mm) nominal Length--3 inches (76.2 mm) nominal (Part Number 92XX); 3.375 inches (85.73 mm) nominal (Part Number 91XX).

ELECTRICAL SPECIFICATIONS

Frequency Response: Flat--20 Hz to 20 kHz ± 2 decibels

Impedance: High--50 K ohms (nominal); Low--150 ohms (nominal)

Voltage Step Ratio (Input Power Level); Low to High: +29 decibels (typical); high to low: -29 decibels (typical)

Part Number	Switchcraft
¤9115	Lo Z: 3-contact Q-G® female, A3F	Hi Z: 2-conductor phone plug, 1/4-inch finger diameter, right angle handle, 4 inch extension (shielded) cable
¤9129	Lo Z: 3-contact Q-G ® female, A3F	Hi Z: 2-conductor phono plug, rightangle handle, 4 inch extension(shielded) cable
9144	Lo Z: 3-contact Q-G ® female, A3F	Hi Z: 2-conductor phone plug, 1/4 inch finger diameter
9244	Lo Z: 3-pin Q-G ® male, A3M

¤ Available on special order only; contact Switchcraft for price and delivery.

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