Description
OEP A187A10C DIRECT INJECTION (DI) Box Transformer
Applications:
- D.I. for electric guitar
- Coupling instrument pickups to low impedance microphone inputs
- Converts unbalanced line level (high impedance) instrument signals to balanced microphone input level for direct connection to a mixing desk.
- Eliminates hum.
- Long cable runs without HF loss
CLICK HERE for the Product DATA SHEET
Direct Box (D.I.) Transformer Electrical characteristics
- Winding ratio: 11.5 to 1+1
- DC resistance ( Ω +/-15%):
- (1 – 4): 3300k
- (5 – 8) (6+7 linked in series): 272
- (5//6 – 7//8) linked in parallel: 67
- Impedance ratio: 140k to 1k (5//6 and 7//8 parallel wired)
- Maximum input level @ 20Hz with <1% distortion: +21.5dBu
- Leakage inductance(1 – 4) @ 1kHz: 155mH (typ.) (5,6,7,8 S/C)
- Interwinding capacitance @ 10kHz:
- (1,4) to (5,7): 45pF (typ.)
- (1,4) to (6,8): 65pF (typ.)
- (1,4) to can: 39pF (typ.)
- (1,4) to (5,6,7,8) with screens + can earthed: 5pF (typ.)
- Voltage gain (@1kHz, 0dBu): -22.0dBu +/- 0.2
- Proof voltage: winding to winding: 250Vrms
- screens to windings: 250Vrms
OEP’s microphone input transformers encompass a variety of specialised audio transformers meticulously designed and manufactured at OEP’s factory facilities in Oxford. The combination of design and manufacturing proficiency enables OEP to exercise precise control over the production process, guaranteeing that each microphone input transformer adheres to the stringent specifications set by its designer. This commitment to build quality directly influences the transformer’s efficiency, resulting in outstanding sound quality and reliability.
- Brand: Oxford Electrical Products (CARNHILL GROUP)
- OEP: founded in 1982
- Made in BRITAIN (Oxford)
Oxford Electrical Products has established itself as a globally trusted brand for the design and manufacture of transformers and power supplies.
