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Hammond 140 EX Series Studio Grade
Impedance Matching Audio TransformersHammond's 140 EX Series Studio Grade Impedance Matching Audio Transformers operate in the 20 Hz to 20 KHz range. The metal can provides excellent shielding from a broad range of external sources. They are designed for maximum bandwidth and the lowest distortion at +10 dbm power level or less. The nickel core provides high permeability combined with low losses. Typical applications for these audio transformers include input/output isolation, line matching, driver, and hybrid applications.
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Features
- Studio grade frequency response: 20 Hz. - 20 Khz. (+/- 1 db, ref. @ 1 Khz.) minimum
- Designed for maximum bandwidth, lowest distortion at +10 dbm power level or less
- Excellent shielding - Mu metal case.
- Insulated leads 5" (127mm) long minimum .
- Case diameter of 1.25" (31.8mm) and height of 1" (25.4mm).
- Adjustable height case bracket - mounting hole centers are 1.875" (47.6mm).
- Net weight 3 oz
Applications
- Input/output isolation
- Line matching
- Driver
- Hybrid applications
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| Part Number | Typical Applications | Nominal
Impedance
(Ohms) | Overall
Turns
Ratio
Pri. To Sec. | Datasheet |
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| Primary | Secondary |
| 140MEX | Crystal/Ceramic MIC to Base | 100K | 1,500 | 8:1 |  |
| 140NEX | Dynamic MIC to Base | 50 | 1,500 | 1:5.5 | |
| 140PEX | Line to Base | 150/600 | 600/2,400 | 1:2 | |
| 140QEX | Line to Line, Isolation | 600 C.T. | 600 C.T. | 1:1 | |
| 140REX | Line to Line, Isolation | 600 C.T. | 150 | 2:1 | |
| 140TEX | Input/Output Isolation | 1,000 | 1,000 | 1:1 | |
| 140UEX | Input/Output Isolation | 10K | 10K | 1:1 | |
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