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Product Description
Manufacturer Part Number: P-T-LEHLE-MZ-L
The LEHLE TRANSFORMER MZ is the ideal component to avoid hum loops without degrading the sound. It achieves this through galvanic isolation of low to mid impedance audio signal sources. It can be used as an input or output transformer, for balanced or unbalanced signals.
With the maximum level of 3.9 V RMS at 20 Hz and very low distortion it is perfectly suited to pro audio environments which run typically with 1.2 V RMS (+4 dBu) level. It will also work perfectly with high end audio devices for home use. In both situations the high headroom, low distortion, excellent bandwidth and strong magnetic coupling guarantee that no detail of your sound gets lost.
The toroidal core of the transformer is completely potted into the magnetically shielded enclosure, so there will be no microphonic issues. The MZ-L version with the coloured leads comes with two M3 screws, which make it very easy to mount.
Measurements and Specs
Files
The LEHLE TRANSFORMER MZ is the ideal component to avoid hum loops without degrading the sound. It achieves this through galvanic isolation of low to mid impedance audio signal sources. It can be used as an input or output transformer, for balanced or unbalanced signals.
With the maximum level of 3.9 V RMS at 20 Hz and very low distortion it is perfectly suited to pro audio environments which run typically with 1.2 V RMS (+4 dBu) level. It will also work perfectly with high end audio devices for home use. In both situations the high headroom, low distortion, excellent bandwidth and strong magnetic coupling guarantee that no detail of your sound gets lost.
The toroidal core of the transformer is completely potted into the magnetically shielded enclosure, so there will be no microphonic issues. The MZ-L version with the coloured leads comes with two M3 screws, which make it very easy to mount.
Measurements and Specs
| Capacitance primary to secondary winding | 148 pF | |
| Capacitance secondary winding to shield | 80 pF | |
| Common mode rejection ratio (1kHz) | 88 dB | |
| Common mode rejection ratio (50Hz) | 108 dB | |
| Compliance | RoHS II according to Directive 2011/65/EU | |
| Distortion (THD) | 0.002 % | |
| Electrical isolation | 2 kV | |
| Frequency response total range | 3 Hz - 250 kHz | |
| Height | 21mm [0.83"] | |
| Input impedance | 10.2 kΩ | |
| Lead Length | 90mm [3.54"] | |
| Leakage inductance | 2.7 mH | |
| Length | 32mm [1.26"] | |
| Level audio range (20 Hz) | -0.3 dBu | |
| Level audio range (20 kHz) | -0.2 dBu | |
| Magnetic coupling | 95 dB | |
| Maximum input level (20Hz) | 14 dBu / 3.9 VRMS | |
| Maximum input level (50Hz) | 22 dBu / 9.8 VRMS | |
| Mounting Hole Center to Center | 18mm [0.71"] | |
| Mounting Hole Threading | M3 | |
| Output impedance | 240 Ω | |
| Phase shift (20 Hz) | 0.3° | |
| Phase shift (20 kHz) | -2° | |
| Primary DC resistance | 90 Ω | |
| Primary inductance | 158 H | |
| Secondary DC resistance | 98 Ω | |
| Self resonance point | 170 kHz | |
| Temperature range | -20 °C [-4 °F] - +125 °C [257 °F] | |
| Turns ratio | 1:1 | |
| Voltage gain | -0.25 dB | |
| Weight | 65 g [2.3 oz] | |
| Width | 32mm [1.26"] |
| Packaging Dimensions | 1.271 in. × 1.261 in. × 1.831 in. | |
| Weight (Packaging) | 0.147 lbs. |
Files
| Datasheet | All Models |
Attention CA Residents: Prop 65 Warning
WARNING:
This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.
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