Whirlwind MIX 6 manual Controls and Connections

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CONTROLS AND CONNECTIONS

1.Channel Volume Pots control input signals over a range of

6OdBm attenuation at full off to 2OdBm of gain at full on.

2.Pan Pots are dual pots with center detent, offering over 65dB of stereo isolation from left to right channel. The center detent allows convenient and accurate setup, feeding signal equally to both channels.

3.Low frequency Cut Switch for reduction of wind noise, etc. The cutoff frequency is 120Hz with a 24dB slope.

4.OL (Over Load) LED illuminates when the level is 3dB below distortion. The clip circuit senses the signal level at the input diff amp and after the channel gain.

5.Aux 1 Input Pot controls the rear panel RCA jacks. Aux I is a stereo unbalanced circuit feeding the left and right busses. This control has a gain range of -60 to -~- 20dB.

6.Aux 2 Input Pot controls the rear panel stereo 1/4” TRS balanced jacks through a gain range of -60 to +20dB. Postfader signal is fed to the headphone select switch “mon' position allowing aux 2 to become an external input to the headphone circuit. The main/off switch routes the aux 2 input signal to the left and right stereo busses in

the “in” position and lifts the signal when “out”. Signal to the headphone switch is always on.

7.Master Volume Pots determine the amount of signal from the summing amps that is fed to the output drivers and the meters. These also have a gain range of -60 to i-2OdBm.

8.LED dB Indicators are precisely calibrated at 3dB increments and span a range of -15 to +l2dBm measured unbalanced at the 1/4” output. The output of the XLR, with the switch in Line mode, is 6dB greater.

9.Stereo Peak Limiter is pre master fader and is switchable in or out of the signal path. Threshold is set at 0dB and limiting up to 15dB is possible. The left and right LEDs on the front panel illuminate when the limiter is working and get brighter as limiting increases. Attack time is fast and the ratio is approximately 4:1.

10.Stereo Headphone Circuit consists of a source select switch, a volume control, a 1/4” TRS headphone jack and will drive any headphones with 20 ohms or greater impedance. The volume control has a gain range of -60 to +20db. The select switch feeds either the prefader stereo master signal or the aux 2 postfader signal to the headphone amplifier.

11.LED Indicators for Phantom Power and Unit Power illuminate when rear panel switches are activated.

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Contents Unpacking Stereo Mixer IntroductionTheory of Operation Controls and Connections Page Line 101 Mic 105 Specifications