
Z MATCHING TRANSFORMERS
1. 9144
2. 9244click here to download a schematic drawing
(you will need to have Adobe Acrobat installed on your system to do this)
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, A3FHi 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, A3FHi Z: 2-conductor phono plug, rightangle handle,
4 inch extension(shielded) cable9144 Lo Z: 3-contact Q-G ®
female, A3FHi Z: 2-conductor phone plug,
1/4 inch finger diameter9244 Lo Z: 3-pin Q-G ®
male, A3M
¤ Available on special order only; contact Switchcraft for price and delivery.
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