SOWTER AUDIO TRANSFORMERS
4243 DI BOX TRANSFORMER
4243 Frequency response
I Box transformer

PASSIVE DIRECT INPUT (DI) BOX TRANSFORMER

For matching high impedance (10k to 100k ohm) guitar pick-up etc to microphone or desk input. Ensures optimum loading of the guitar pick-up and correct matching to microphone pre amplifier. Accepts balanced or unbalanced inputs or outputs. Isolates ground noise effects. Enhances harmonic content when long cable is used. Secondary CT provided for use with push-pull amplifiewrs. Normally it should not be connected.
FEATURES Mumetal core for minimal harmonic distortion. Multiple interleaved windings to minimise leakage inductance ensuring good high frequency response. Electrostatic screens for noise rejection. Secondary winding centre tapped to provide phantom powering of an active transducer or phase split feed for use with a push-pull amplifier. Mumetal can for magnetic shielding. Package options.
RATIO
10ct:1
MAXIMUM LEVEL 0.5 % THD at 50 Hz (40 ohm source)
+34 dBu
DISTORTION at 50 Hz (Source 40 ohms)
0.25% at +20 dBu
PRIMARY INDUCTANCE/RESISTANCE (approx)
800 H / 2800 Ohms
SECONDARY INDUCTANCE/ RESISTANCE (approx)
8H / 74 Ohms
FREQUENCY RESPONSE 10k ohm source 1k ohm load
+/- 1.5 dB 10 Hz to 40 kHz