Logitek Standard Elec. Cable Manufacturing MON-10 service manual General Information

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SECTION 1 — GENERAL INFORMATION

1-1 General Description

The Logitek MON-10 is a mechanical routing switcher, a six-range VU meter and a six-watt amplifier all in one convenient rack-mounted unit.

The MON-10 features ten balanced stereo inputs, any one of which can be selected using front-panel pushbuttons. The selected input is passively fed to balanced output terminals on the rear panel. It is also buffered and fed to a four-position source mode switch. This switch selects whether the meter and monitor will be fed the left channel, the right channel, the mono sum (L+R) or the out-of-phase difference (L-R).

The output of the source mode switch feeds a meter amp, which in turn feeds a built-in VU meter and peak LED. The VU meter can be switched between any of six ranges, as determined by the front panel meter switch. The mode switch also feeds a six-watt monitor amp, which in turn feeds either a built-in speaker, headphones, or an external speaker.

1-2 Physical Description

The Logitek MON-10 is constructed within a 3 1/2" H x 19" W X 7" D cabinet, which is designed to take up two rack spaces in a standard 19" equipment rack. The power cord, fuse and all connections except the headphone jack are located on the rear panel. The headphone jack, meter, speaker and all controls are located on the unit’s front panel.

1-3 Electrical Specifications

 

Number of Inputs:

 

Input Level:

10 stereo

 

normal

0 dBu

maximum

+23 dBu

Input Impedance:

 

Line Output Level:

140kohms

 

Line output switching is passive so the output level, impedance and balancing is the same as that of the selected input.

Speaker Output Level:

maximum

6 watts

Speaker Output Noise:

ref. 0 dBu input

60 dBu

AC Line Input Voltage:

50-60 hz105-129 V (optional factory modification for 220-240 VAC)

1-4 Instrument Identification

The MON-10 is identified by a model number and a three or four digit serial number. The model number

and serial number appear on a label on the back of the unit near the power cord. All correspondence to your Logitek dealer or to the Logitek factory should refer to the model number and serial number.

1-5 Where to find help

Logitek customer service personnel are available to help with any questions, comments or problems you might have with the MON-10, both during and after the warranty period. Our hours of operation are 8AM to 5PM central time. We may be contacted in one of the following ways:

By Phone: 877-231-5870 (U.S.A. & Canada)

 

or 713-664-4470

By Fax:

713-664-4479

By Email:

help@logitekaudio.com

By Mail: Logitek Electronic Systems, Inc.

5622 Edgemoor Drive

Houston, TX 77081

USA

** MON-10 Instruction Manual **

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Contents Logitek Copyright 1990, Logitek Electronic SYSTEMS, INC MON-10 Table of Contents General Information Preparation for USE Operating Instructions Principles of Operation Important NoteReplacement Parts List Switches ResistorsRectifiers SpeakersManufacturers List ADCDiagrams