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Jensen Transformers JT-MB-CPCA Microphone Input Transformer
1:1 Windings Ratio, P C Board Mount, for Ultra-low Noise Amplifiers
Jensen Transformers JT-MB-CPCA 1:1 Microphone Input Transformer
The Jensen Transformers JT-MB-CPCA 1:1 Microphone Input Transformer features a dual Faraday shield for very high CMMR of 122 dB at 60 Hz, as well as a 30 dB magnetic shield. The wire leads and included angle bracket mounting hardware make it perfect for DIY projects. Also available in a P C B mounting style as JT-MB-CA.
Like all Jensen microphone input transformers, the JT-MB-CPCA offers legendary sonic transparency. Internal Faraday shielding virtually eliminates hum, buzz, and RF interference, while MuMETAL® magnetic shielding cans reduce hum caused by nearby magnetic fields. Optimized noise performance is ensured by matching the step-up turns ratio to you input stage design. Extended low-frequency and Bessel-tailored high-frequency response results in the ultra-low time-domain distortion (DLP) that only Jensen offers. Insertion loss is minimal and adding phantom power is simple.
Here are some specs:
- Impedance ratio: 150:150
- Turns ratio: 1:1
- Maximum 20 Hz input: +2dBu
- THD @ 20 Hz: 0.045 %
- Frequency Response: 20Hz / 20 KHz , -0.10 dB / -0.04 dB
This transformer is also available with wire leads as JT-MB-CA.
The JT-MB-CPCA is backed by the manufacturer's comprehensive one-year warranty, and has a remarkable 20-year warranty on the transformer device itself.
Jensen Transformers' Description
Jensen Transformers JT-MB-CPCA
Microphone Input Transformer
1:1 FOR ULTRA-LOW NOISE AMPLIFIERS
- Ideal retrofit to solve problems with transformerless preamps
- Dual Faraday shields provide very high CMRR: 122 dB at 60 Hz
- Eliminates complex circuitry required to block 'phantom' power
- Excellent frequency response and time domain performance
- Low transformer related Noise Figure
This transformer is designed to couple a nominal 150 Ω mic to the 3 kS input impedance typical of 'transformerless' preamps. Both windings are fully balanced and either may be reversed to invert polarity. A 30 dB magnetic shield package is standard. Not recommended for mic 'splitter' applications (use JT-MB-C).
Here is the right-hand perspective
The PCB pins and Valox insulator can be seen in this bottom perspective view
We include a printed copy of the datasheet along with the JT-MB-CPCA transformer itself
The JT-MB-CPCA comes packaged in a small box as shown here.
Here is another angle on the product bax
Here is the JT-MB-CPCA spec sheet. PDF format.
Why Cable Solutions?
- Cable Solutions is an Authorized Jensen Transformers Distributor, so our customers are ensured full warranty protection and technical support. (Jensen Transformers is obligated to provide neither warranty nor technical support for products purchased from unauthorized resellers!)
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