Great river NV Series User Manual Download Page 2

Definitive

 

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Definitive

 

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Page 1of 6 

Introduction 

 

The MP-2NV and the ME-1NV are professional quality microphone preamplifiers designed to 

re-create the vintage sound characteristics of the early 1970s large consoles.  Modern 
components give the NV Series more clarity, punch and performance under normal use. In 
addition, features like metering before and after the major gain stages let the user drive them 
“hard” to greatly expand the range of sonic options.  All microphones will benefit from the 

power of the NV series preamplifiers, including dynamic, condensor and especially ribbon 
types.  

On the MP-2NV, each channel is an independent system. All power supply regulation is 
duplicated on each audio channel card. For both units, gain staging, phantom power, polarity, 

impedance and loading are individually controlled. In addition, each channel is equipped 
with dual LED meters and a true HI-Z instrument jack with its own input amplifier. 

The ME-1NV uses the same audio and metering circuit boards as the MP-2NV, only the power 
supply is smaller due to the reduced demands of the single channel.  All specifications and 
performance details are identical with the exception of size and weight. 

Be sure to register your NV series microphone preamplifier online at 

www.greatriverelectronics.com

. We welcome and look forward to your comments.

 

To best understand and utilize your NV, please read the following user’s guide.  

 

 

Summary of Contents for NV Series

Page 1: ...i iiv v ve e e A A Au u ud d di iio o oDesign www greatriverelectronics com Definitive A A Au u ud d di iio o o D D De e es s si iig g gn n n D D De e ef ffi iin n ni iit tti iiv v ve e eAudio D D De e es s si iig g gn n n D D De e ef ffi iin n ni iit tti iiv v ve e e A A Au u ud d di iio o oDesign www greatriverelectronics com NV Series Microphone Preamplifier DI User s Guide ...

Page 2: ... the major gain stages let the user drive them hard to greatly expand the range of sonic options All microphones will benefit from the power of the NV series preamplifiers including dynamic condensor and especially ribbon types On the MP 2NV each channel is an independent system All power supply regulation is duplicated on each audio channel card For both units gain staging phantom power polarity ...

Page 3: ...und When the input stage clips it gets ugly so keep an eye on it Hi Z Direct Injection The Hi Z or Direct Injection DI jack presents approximately 1 2 megohm impedance and utilizes a unique FET Bipolar buffer amplifier to drive the input transformer This presents the proper input load to an instrument yet allows tonal shaping by changing the load on the input buffer with the impedance switch Great...

Page 4: ...ighs This effect is highly dependant on the particular microphone and the only way to know for sure is to try it Keep in mind that the impedance change is accomplished by changing the step up ratio of the input transformer so a gain change happens as well Don t let the volume difference mask the tonal difference when determining your preference In general the best mics to try changing the impedanc...

Page 5: ...isolated and balanced It may be connected to unbalanced inputs by simply connecting pin 2 to the hot lead and tying pins 1 and 3 together Do not float pin 3 it must be connected to complete the circuit Patch This patch jack or insert point jack is a 1 4 TRS tip ring sleeve type The Tip is send the Ring is return and the Sleeve is ground The nominal level is approximately 10dBv Great River Tips Thi...

Page 6: ...t per channel 5dB to 60dB 5dB steps Output Level continuous control independent per channel 25dB to 10dB Output Transformer Loading In Out gold plated relay independent per channel w LED Input Impedance Selector 300 1200 ohm gold plated relay independent per channel w LED Phantom power 48 Volts DC independent per channel w LED Output signal polarity gold plated relay independent per channel w LED ...

Page 7: ...from date of purchase applies to all Great River products purchased from authorized dealers Studio hardware components are warranted against defects in materials and workmanship Upon receipt of notice of defective materials or workmanship Great River shall at its option either repair or replace hardware products that prove to be defective The Great River warranty does not apply to defects resultin...

Page 8: ...triverelectronics com Definitive A A Au u ud d di iio o o D D De e es s si iig g gn n n D D De e ef ffi iin n ni iit tti iiv v ve e eAudio D D De e es s si iig g gn n n D D De e ef ffi iin n ni iit tti iiv v ve e e A A Au u ud d di iio o oDesign www greatriverelectronics com Page 7of 6 Great River Electronics Inc 3056 East 65th Street Inver Grove Heights MN 55076 USA Tel 651 455 1846 Fax 651 455 3...

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