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Manual Grace 201

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  • Grace 201 - page 1

    OWNERS MANUAL MODEL 201 MICROPHONE PREAMPLIFIER PO Box 204 Boulder, CO. 80306 303.443.7454 fax: 303.444.4634 Revision C March, 2000 © Copyright 1996, Lunatec LLC ...

  • Grace 201 - page 2

    I. OPERATIO N ............................................... 2 .... A. FRONT PANEL CONTROL S .......................................... 2 ...... 1. GAIN CONTRO L .................................................. 2 ...... 2. TRIM CONTRO L .................................................. 2 ...... 3. PHANTOM POWE R ................................ ...

  • Grace 201 - page 3

    Thank you for purchasing the Grace design model 201 microphone preamplifier. It is built to be completely reliable and easy to use. However, there are some important instructions included in this manual. Please take the time to familiarize yourself with the installation and operation of the unit and most problems will be avoided. Regardless of what ...

  • Grace 201 - page 4

    off, the LED will illuminate if voltage is being fed from an external source. (i.e. when using a direct split in a remote recording application.) 4 . PHASE REVERSE The phase reverse switch (labeled ∅ ∅ ) reverses the absolute polarity of the music signal at the input of the preamplifier. The switch illuminates green and provides power for a sea ...

  • Grace 201 - page 5

    level before the trim control, preamplifier overload can be avoided. It is best to leave the trim control fully clockwise for normal recording operations. II. INSTALLATION A . AUDIO TERMINATIONS 1 . Input connections are made via female XLR connectors with pin 2 positive, pin 3 negative and pin 1 ground. 48V phantom power is supplied on pins 2 and ...

  • Grace 201 - page 6

    PREAMP END 1 3 2 1 3 2 301 RECORDER END Figure 2. 600 Ω BALANCED CABLE TERMINATION B . POWER TERMINATION 1 . A standard AC power cable is included. For safety, it is recommended that the cord be connected to a grounded outlet. In the event of noise from a ground loop, the audio ground can be isolated from the chassis ground by throwing the AUDIO ...

  • Grace 201 - page 7

    screws that hold each rack ear in place. After removing the rack ears replace the two lower screws on each side of the preamplifier. III. MAINTENANCE A . The model 201 was designed to be maintenance free for many years. It is highly unlikely that your unit will require service. However, there are two adjustments that may need to be made from time t ...

  • Grace 201 - page 8

    iv . Apply power to the generator, preamplifier, then the level meter. v . Adjust the generator output level so that the preamplifier output level is at the desired red threshold. If the proper level can't be reached, adjust the preamplifier gain control. vi . Locate VR1 on the channel 1 audio circuit board. (See figure 7) Adjust VR1 until the ...

  • Grace 201 - page 9

    1 . EQUIPMENT NEEDED i . Oscilloscope with a DC coupled 10mV input range. ii . Unbalanced output cable. (see Figure 1.) iii . Plastic alignment tool or a small screwdriver. iv . #2 Phillips screwdriver 2 . PROCEDURE i . Remove the 12 #6-32 flat head screws from the top lid but leave the lid in place. ii . Set all of the preamplifier gain controls t ...

  • Grace 201 - page 10

    IV . SPECIFICATIONS FREQUENCY RESPONSE @ 40dB gain /± 0.2dB 20Hz-300kHz @ 40dB gain /± 3dB 4.5Hz-1.0MHz THD+N @ 40dB gain +20dbu out <.0015% INTERMODULATION DISTORTION @40dB gain +25dBu out <.0025% NOISE - REFERRED TO INPUT @60dB gain 50 Ω source -130dB PHASE DEVIATION 50-20kHz <2° CROSSTALK @40dB gain -109dB CMRR @60dB gain, 3.5Vcm, ...

Manufacturer Grace Category Stereo Amplifier

Documents that we receive from a manufacturer of a Grace 201 can be divided into several groups. They are, among others:
- Grace technical drawings
- 201 manuals
- Grace product data sheets
- information booklets
- or energy labels Grace 201
All of them are important, but the most important information from the point of view of use of the device are in the user manual Grace 201.

A group of documents referred to as user manuals is also divided into more specific types, such as: Installation manuals Grace 201, service manual, brief instructions and user manuals Grace 201. Depending on your needs, you should look for the document you need. In our website you can view the most popular manual of the product Grace 201.

Similar manuals

A complete manual for the device Grace 201, how should it look like?
A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use Grace 201 by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Grace 201.

A complete Grace manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

1. Preface and tips on how to use the manual Grace 201 - At the beginning of each manual we should find clues about how to use the guidelines. It should include information about the location of the Contents of the Grace 201, FAQ or common problems, i.e. places that are most often searched by users in each manual
2. Contents - index of all tips concerning the Grace 201, that we can find in the current document
3. Tips how to use the basic functions of the device Grace 201 - which should help us in our first steps of using Grace 201
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with Grace 201
5. FAQ - Frequently Asked Questions
6. Contact detailsInformation about where to look for contact to the manufacturer/service of Grace 201 in a specific country, if it was not possible to solve the problem on our own.

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