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PSC AlphaMix Operation Manual

Psc alphamix portable audio mixer operation manual
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AlphaMix
Portable Audio Mixer
Operation Manual for Mixers with PCB V1.1
Copyright 2003
Professional Sound Corporation
Printed in the U.S.A.

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Summary of Contents for PSC AlphaMix

  • Page 1 AlphaMix Portable Audio Mixer Operation Manual for Mixers with PCB V1.1 Copyright 2003 Professional Sound Corporation Printed in the U.S.A.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS DESCRIPTION……………………………………………………………………………4 SAFETY WARNINGS……………………………………………………………………4 APPLICATIONS…………………………………………………………………………..4 FUNCTIONS INPUTS……………………………………………………………………………5-7 BALANCED INPUTS INPUT LEVELS MICROPHONE POWERING LOW CUT FILTER CHANNEL GAIN CHANNEL PANS CHANNEL METERING BOOM POLE REMOTE CONTROL OUTPUTS…………………………………………………………………………8-9 BALANCED OUTPUTS MULTIPIN (BETA) CONNECTOR OUTPUT LIMITERS TRANSCRIPTION OUTPUTS HEADPHONE OUTPUTS TAPE RETURNS WIRELESS MIC POWER DISTRIBUTION METERS…………………………………………………………………………….9...
  • Page 3 ADDITIONAL FEATURES…………………………………………………………10 SLATE MICROPHONE REFERENCE OSCILATOR BATTERY TEST M-S AND X-Y STEREO RECORDING POWERING………………………………………………………………………….11 INTERNAL POWER, NP-1 BATTERY INTERNAL POWER, ALKYLINE BATTERIES EXTERNAL POWER CONSTRUCTION……………………………………………………………………12 CHASSIS ELECTRONIC TOPOLOGY ENVIRONMENTAL OPERATION PORTA BRACE CASE INTERFACING………………………………………………………………………13 TO BETACAMS TO RDAT RECORDERS TO WIRELESS MICROPHONES WARRANTY AND NON-WARRANTY SERVICE…………………………………15 CONNECTOR PIN ASSIGNMENTS……………………………………………15-16 SPECIFICATIONS…………………………………………………………………….17...

  • Page 4: Description

    Professional Sound Corporation extends a one-year warranty on parts and labor to all AlphaMix owners who return their warranty cards at the time of purchase. This warranty gives you specific rights, which are stated on the card, and enables us to keep you informed of product updates.

  • Page 5: Inputs

    “L” Line (50dB attenuation). In addition to the line/mic switch, each input channel of the AlphaMix is equipped with a rotary trim pot that allows the user to set precise pre-amplifier gain. These input gain trims have a range of approximately 40dB.

  • Page 6: Low Cut Filter

    LOW CUT FILTERS Each input channel of the AlphaMix is equipped with an active low cut (high pass) filter. These filters are activated via the three way switches located below the adjacent channel fader knobs. These filters will attenuate all frequencies below a preset frequency at a rate of 12dB per octave.

  • Page 7: Boom Pole Remote Control

    BOOM POLE REMOTE CONTROL The AlphaMix offers the ability to remotely control the audio level of the channel one input. This feature allows the operator to boom with two hands rather than holding the boom pole with one and riding levels with the other. To use this feature you must first set up the mixer as normal (appropriate microphone power turned on, channel fader turned off for the moment).

  • Page 8: Output Limiters

    2.7dB in input signal will result in only a 1dB increase in output signal. Output channel limiting is displayed on the LCD meter. The AlphaMix contains two separate limiters that are controlled by one front panel mounted switch. This switch has three settings: Off, Separate (S), and Ganged (G).

  • Page 9: Transcription Outputs

    Because the most common use of this type of mixer is with Betacams, we designed the AlphaMix’s meters to emulate the peak reading attributes found on many Betacams. In this manner, you can be confident of your recording levels even when the Betacam is being fed via Betasnake cable or wireless transmission.

  • Page 10: Additional Features

    Bat” indicator comes on, you have approximately 15 to 30 minutes of battery life remaining. The AlphaMix is equipped with meter lamps used for night viewing of the meters. The light source for this meter back lighting is provided by a 18,000mc (18 candela) high performance “green”...

  • Page 11: M-S And X-Y Stereo Recording

    POWERING: A. INTERNAL POWER, NP-1 BATTERY PSC is the only company to offer compact ENG mixer to offer the ability to be powered from an internal NP-1 rechargeable battery. This feature provides a convenient way of powering the mixer without added size, adapters or cables. In...

  • Page 12: Internal Power, Alkyline Batteries

    AlphaMix warranty. C. EXTERNAL POWER The PSC AlphaMix can also be externally powered from any source of DC power from 10 to 18 Vdc. The mixer consumes approximately 210 mA of current over this voltage range.

  • Page 13: Electronic Topology

    The AlphaMix uses proprietary preamplifier designs that are the result of many hours spent testing and tweaking the input circuitry. We believe you will find them to be very, very quiet. The AlphaMix uses the highest quality dual isolated output transformers available on an ENG style mixer.

  • Page 14: To Rdat Recorders

    You should always set the AlphaMix’s mic powering switch to “D” dynamic when using wireless receivers. The AlphaMix can also be used to send audio signals to Betacams via wireless transmitters. The use of transmitters is normally accomplished by connecting the AlphaMix’s output XLR to the audio input of the specific transmitter.

  • Page 15: Warranty And Non-Warranty Service

    WARRANTY AND NON-WARRANTY SERVICE In the unlikely event your AlphaMix requires service it should be carefully packed and shipped prepaid to: Professional Sound Corporation Service Department 28085 Smyth Drive Valencia, CA 91355 USA PH 661-295-9395 FAX 661-295-8398 e-mail techsupport@professionalsound.com Please call before shipping your mixer. We may be able to solve your problem via the phone.
  • Page 16 MONO BALANCED OUTPUT: TA3M 0dBV Nominal PIN 1 Ground PIN 2 Audio High PIN 3 Audio Low GANGING CONNECTOR: TA5M -10dBV Nominal PIN 1 Ground PIN 2 Left Audio Output PIN 3 Right Audio Output PIN 4 Left Audio Input** PIN 5 Right Audio Input** ** Requires 2.74K series resistor MAIN XLR OUTPUTS:...

  • Page 17: Specifications

    This manual and the complete AlphaMix design are covered under various state, federal and international copyright laws. No portion of this manual or any AlphaMix technologies may be reproduced without the specific written permission of PSC. All rights reserved. This manual and all AlphaMix specifications subject to change without notice.

  • Page 18: Ce Declaration Of Conformity

    LVD: This product is in compliance with the requirements of the Low Voltage Directive, 73/23/EEC. 93/68/EEC as defined in EN60065, 1993 and/or EN60950/A1/A2/A3: 1995 TRADE NAME: MODEL: AlphaMix Audio Mixer RESPONSIBLE PARTY: Professional Sound Corp. 28085 Smyth Drive Valencia, CA 91355 USA...

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