Related Manuals for TW Electronic Components LP4 STXi
Summary of Contents for TW Electronic Components LP4 STXi
- Page 1 ELECTRONIC COMPONENTS LP4 STXi USER MANUAL TW LP4 STXi (Location Production) stereo microphone mixer is a compact portable four-channel unit designed for electronic news gathering (ENG) quality sound mixing in a motion picture or television film.
- Page 2 LEFT SIDE PANEL Ÿ Balanced channel inputs – four electronically balanced circuits (transformer balanced is optional) in phase with one another. XLR connectors should be wired as pin1 ground, pin2 +phase signal and pin3 –phase signal. Ÿ Microphone powering selector switches – The input sensitivity in position D is DYN 200 = 0.2 mV and no power.
- Page 3 FRONT PANEL Ÿ Modulometers – Continuous lighting, peak reading, BBC 1-7, dB or VU scaling, built-in red LEDs indicate when the gain reduction is occurring with the limiters switched on. Ÿ Battery check pushbutton Ÿ 6.3 and 3.5 mm phone jacks Ÿ...
- Page 4 RIGHT SIDE PANEL Ÿ Balanced outputs – The main outputs are via transformer balanced XLR connectors and a Hirose 10pin multiway connector is also fitted to facilitate rapid connection of outputs and monitor returns. The line level is set on 600 Ω at 0 dBu and +4 dBu for VU metered mixers. The Hirose 10pin connector is wired as follows: pin 1.
- Page 5 ADJUSTMENT POINTS Ÿ Gain and modulometer adjustment – Connect an AC voltmeter to the Left balanced line output. Set channel 1 pan switch to L position, turn channel 1 fader fully clockwise, Master potentiometer in 0 dB position and switch LFA off. Connect an audio generator 1 kHz 0 dBm attenuator –80 dB to Mic 1 Input and adjust TRIM in the Left Limiter amplifier to obtain 0 dBu (+4 dBu on VU metered mixers) at the Left balanced output.
- Page 7 SPECIFICATIONS Ÿ Inputs Microphone: four transformerless XLR female Sensitivity: –75 dBu Maximum input level: –20 dBu Microphone power: 48 V, 12 V, T (DIN AB) Line attenuation: adds 60 dB attenuation before the mic preamp. Signal to Noise ratio: > 65 dB, Equivalent Input Noise: –125 dBu Frequency response: 20 Hz - 20 kHz ±2 dB Harmonic distortion: less than 0.2 % Low-cut filter: 100 Hz / 14 dB octave...
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