Mesa Rosette Owner's Manual
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Mesa Rosette Owner's Manual

Acoustic di-preamp
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  • Page 1 Owner’s Manual...
  • Page 2 This is something that we do not take lightly. By choosing this instrument to be part of your musical voice, you have become part of the MESA® family… WELCOME! Our goal is to never let you down. Your reward is that you are the new owner of an amp,...

  • Page 3: Table Of Contents

    Table of Contents PRECAUTIONS AND SAFETY INSTRUCTIONS OVERVIEW _____________________________________________________________________________________ 1 TOP PANEL (CONTROLS & FEATURES) INPUT JACK ____________________________________________________________________________________ 2 TUNER OUTPUT JACK ___________________________________________________________________________ 2 MUTE FOOTSWITCH _____________________________________________________________________________ 2 POWER LED ____________________________________________________________________________________ 2 BOOST FOOTSWITCH ____________________________________________________________________________ 2 GAIN CONTROL _________________________________________________________________________________ 2 PHASE SWITCH _________________________________________________________________________________ 2 BOOST CONTROL _______________________________________________________________________________ 3 NOTCH FILTER _________________________________________________________________________________ 3...

  • Page 4: Important Safety Instructions

    Only connect to an AC power supply adapter that meets the power supply specifications listed on the rear of the unit. Make certain grounding/earthing conforms with local standards. Your MESA/Boogie® ROSETTE™ DI-PREAMP is a professional instrument. Please treat it with respect and operate it properly...

  • Page 5: Overview

    Tone. Our goal with the Rosette Series was clear from the start and our commitment to excellence has guided us to what we feel is the FIRST ACCURATE Acoustic DI Preamp/Pedal and, the Rosette 300 Watt 2x8 Combo Amplifier.

  • Page 6: Top Panel (Controls & Features)

    This jack (located on the right side of the chassis) is the PICKUP INPUT that feeds the first stage monolithic J-FET buffer amp of the ROSETTE™ DI-PREAMP. The input sensitivity of this input buffer amp is compatible with all common pickup levels and impedances (input impedance is approx.

  • Page 7: Boost Control

    BOOST This control sets the amount of BOOST (or Solo) level applied when the BOOST FOOTSWITCH is engaged. Fully counterclockwise there is almost no gain increase, and fully clockwise there is about 6dB gain increase applied to the original level. NOTCH FILTER This control sets the frequency point where a narrow notch (cut) in the response is positioned.

  • Page 8: Treble Control

    FREQ control to that because there is no cut or boost being applied in that band. This style of control is referred to as a peak-dip (or bell) style filter. Here in the Rosette DI Pre, the pair that comprises the MID controls offers accuracy and flexibility only found on fully professional recording or live sound mixing consoles.

  • Page 9: Preamp Out Xlr Jack

    Current requirements of the DI-PREAMP are less than 20mA, resulting in an expected battery life of about 15-25 hours depending on the type and quality of battery used. While the Rosette DI PRE itself is tolerant of noise from outside power supplies, inadvertent ground loops can be created between pedals generating noise between each other.

  • Page 10: Di Out Source Switch

    This switch selects the signal source routing that is used to derive the DIRECT Output signal. In the PRE position, the signal is sourced directly from the input buffer (pre GAIN control), so the ROSETTE INPUT (GAIN) and EQ set- tings will have no effect on the instrument’s sound.

  • Page 11: Troubleshooting

    TROUBLESHOOTING In the event that your DI-PREAMP appears not to work correctly, often enough the problem is not with the PREAMP-DI, but a related piece of equipment that it’s necessary to take a deliberate, systematic approach to troubleshooting in order to effectively identify and correct the problem.
  • Page 12 SYMPTOM NOISE (LOW FREQUENCY HUM) IN AUDIO 1. Defective instrument cable or problem with instrument wiring. Plug a very short instrument cable into the instrument input (to turn the DI-PREAMP on), if hum is greatly reduced or eliminated, this means that the noise is entering from outside the DI-PREAMP. Try a known good instrument cable and/or instrument).
  • Page 13 NOTES PAGE 9...

  • Page 14: Specifications

    [note 1]: measured approx. 1 octave from knee [note 2]: including feet and controls [note 3]: not including battery MESA/Boogie® continually develops new products and improves existing ones. For this reason, specifications and information in this manual are subject to change without notice. SERVICE INFORMATION •...
  • Page 17 This device has been tested and found to comply with the limits for a Class B device pursuant to part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
  • Page 18 MESA/Boogie® - 1317 Ross Street - Petaluma, California 94954 USA Phn. (707) 778-6565 www.mesaboogie.com Fax (707) 765-1503 17/05/16...

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