Studio Grade Impedance Matching Transformers 1140 Series

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​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 @ 20 Hz.
  • Excellent Shielding – Mu Metal enclosures
  • Line Output Transformers are open style (not Mu Metal)

Part Details

Click Part No, below, for details (e.g., Product drawings, assembly instructions, ship weight)

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

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

Line Input Transformers

Part No. Impedance Ratio Turns Ratio Max Input @ 20Hz THD @ 20Hz Frequency Response 20Hz / 20kHz
1140-LN-A 10k:20k 1:1.414 +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

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
open style (not Mu Metal)

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.

Tags: audio transformer, studio grade, mu metal, nickel core, distortion, shielding, output, input, microphone, splitter, line, direct box