Instruction/ maintenance manual of the product MPA Gold Art
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ART MPA Gold™ Microphone Preampli fier 2 TABLE OF CONTENTS Introducti on ............................................................................................ 3 Intr oduction ...................................................................
ART MPA Gold™ Microphone Preampli fier 3 MPA GOLD INTRODUCTION The ART MPA Gold™ microphone preamplifie r features a new low noise, high performance preamplification circuitry design ed for superior audio fidelity.
ART MPA Gold™ Microphone Preampli fier 4 FRONT PANEL CONTROLS Input Gain control This control optimizes the input signal leve l before the tube gain is applied. Both Microphone and Instrument input gains remain the same and are affected by this adjustment.
ART MPA Gold™ Microphone Preampli fier 5 Both the microphone and instrum ent inputs are optimized for t heir respective sources as far as signal levels and noise performance. Running most of the gain on the input generally provides the best performance of t he MPA Gold.
ART MPA Gold™ Microphone Preampli fier 6 Phantom switch Phantom power on the microphone input is turned on and off with this switch. Depressing the switch will power condens er microphones and ot her 48volt phantom powered devices. Phantom power is suppli ed to pins 2 and 3 of the input jack.
ART MPA Gold™ Microphone Preampli fier 7 In the “normal” (OUT) position, the tube dist ortion gradually rises until it smoothly clips. The tube is run almost completely open-loop in this mode, providing a musical tube “crunch” when overdriven with a natural recove ry from clipping.
ART MPA Gold™ Microphone Preampli fier 8 When you plug into this jack it DISABLES th e balanced input on the rear of the unit. This feature allows you to keep the rear input patched in, and use the instrument input to switch to a different source. The instrum ent input allows the MPA Gold to serve as a great DI device as well.
ART MPA Gold™ Microphone Preampli fier 9 MPA GOLD SIGNAL FLOW SIGNAL PATH FLOW The signal path of the MPA Gold consists of a discr ete class A microphone pre-amp followed by a Hi Pass Filter, a balanced different ial tube circuit with a 20dB Gain switch and then the phase switch.
ART MPA Gold™ Microphone Preampli fier 10 MPA GOLD OPERATING INSTRUCTIONS Obtaining the best noise pe rformance with the MPA GOLD Start by turning down the I nput Gain knob and centering t he Analog Output knob. Use the analog meter to view the operating level by depressing the switch under the center of the analog meter.
ART MPA Gold™ Microphone Preampli fier 11 Start by setting the centeri ng the Input Impedance knob. This provides a 600-Ohm load. Lower impedance loads will reject more noise picked up by cabling, and dampen microphone resonance. Higher impedance settings provide a more “open” sound.
ART MPA Gold™ Microphone Preampli fier 12 WARRANTY INFORMATION Limited Warranty Applied Research and Techno logy will provide warranty and service for this unit in accordance with the following warr.
ART MPA Gold™ Microphone Preampli fier 13 SERVICE The following information is provided in t he unlikely event that your unit requires service. 1) Be sure that the unit is the cause of the problem. Check to make sure the unit has power supplied, all cables are connected correctly, and the cables themselves are in working condition.
ART MPA Gold™ Microphone Preampli fier 14 14 MPA GOLD SPECIFICATIONS Dimensions: 6.5” D x 19.0” W x 3.5” H Weight: 12 Lb. Frequency Response 15Hz to 48 kHz (+0, -1dB) @ normal plate voltage 15Hz to 120 kHz (+0, -1dB) @ high plate voltage Dynamic range: >110dB (“A” weighted) CMRR: >90dB THD: <0.
An important point after buying a device Art MPA Gold (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Art MPA Gold yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Art MPA Gold - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Art MPA Gold you will learn all the available features of the product, as well as information on its operation. The information that you get Art MPA Gold will certainly help you make a decision on the purchase.
If you already are a holder of Art MPA Gold, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Art MPA Gold.
However, one of the most important roles played by the user manual is to help in solving problems with Art MPA Gold. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Art MPA Gold along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
