Studio Grade Impedance Matching Transformers 1140 Series

​Features

  • Designed with Nickel alloy cores for high performance and Wide Bandwidth                                 
  • Frequency Response: 20 Hz. – 20 Khz. ±0.35 db, (ref. @ 1 Khz)
  • Low distortion at levels up to +27 dBu @ 20Hz.
  • Excellent Shielding – Mu Metal enclosures
  • Line Output Transformers are open style (not Mu Metal)

Microphone Input Transformers

Part No. Impedance Ratio Turns Ratio Max Input @ 20Hz THD @ 20Hz Frequency Response 20Hz / 20kHz
1140-MN-A 150:15K 1:10 -2.5 dBu 0.02% -0.05 dB/ -0.06 dB
1140-MN-B 150: 3.8K 1:5 +7.0dBu 0.015% -0.04 dB/ +0.00 dB

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Microphone Splitter Transformers

Part No. Impedance Ratio Turns Ratio Max Input @ 20Hz THD @ 20Hz Frequency Response 20Hz / 20kHz
1140-MS-A 150:150 1:1 +2.0 dBu 0.05% -0.14 dB/-0.06 dB
1140-MS-B 150:150:150 1:1 +2.0 dBu 0.030% -0.08 dB/+0.06 dB
1140-MS-C 150:150:150:150 1:1:1:1 +11 dBu 0.030% -0.05 dB/+0.20 dB

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Line Input Transformers

Part No. Impedance Ratio Turns Ratio Max Input @ 20Hz THD @ 20Hz Frequency Response 20Hz / 20kHz
1140-LN-A 10k:20k 1:4 +16 dBu 0.02% -0.04 dB/+0.10 dB
1140-LN-B 10K:10K 1:1 +20 dBu 0.020% -0.03 dB/+0.10 dB
1140-LN-C 36K:2.2K / 10K:600 4:1 +26 dBu 0.015% -0.20 dB/+0.05 dB
1140-LN-D 40K:2.4K 4:1 +21 dBu 0.060% -0.12 dB/+0.06 dB
1140-LN-E 600:600 1:1 +19 dBu 0.020% -0.06 dB/+0.00 dB

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Line Output Transformers

Part No. Impedance Ratio Turns Ratio Max Input @ 20Hz THD @ 20Hz Frequency Response 20Hz / 20kHz
1140-LU-A 10K:600 4:1 +23 dBu 0.00% -0.06 dB/+0.04 dB
1140-LU-B 600:600 1:1 +21 dBu 0.150% -0.20 dB/+0.03 dB
1140-LU-C 600:600 1:1 +18 dBu 0.001% -0.05 dB/+0.02 dB
1140-LU-D 600:600 1:1 +24 dBu 0.080% -0.18 dB/+0.03 dB
1140-LU-E 600:600 1:1 +22 dBu 0.001% -0.03 dB/+0.02 dB
1140-LU-F 600:150 2:1 +27 dBu 0.001% -0.01 dB/+0.01 dB
1140-LU-G 600:600 1:1 +27 dBu 0.001% -0.02 dB/+0.02 dB

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Direct Box Transformers

Part No. Impedance Ratio Turns Ratio Max Input @ 20Hz THD @ 20Hz Frequency Response 20Hz / 20kHz
1140-DB-A 200K:1.5K 12:1 +22 dBu 0.02% -0.07 dB/-0.07 dB

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Data subject to change without notice.