Operation – Rane MP 2016a User Manual

Page 6

Manual-

OPERATION

RIAA PHONO/LINE INPUTS

Input channels 1 through 4 each have a dedicated preamplifi-

er. A rear panel switch allows setting these preamps for PHONO

or LINE level signals. Make sure you have the switch in the correct

position for your application. The source selectors for Input chan-

nels 1 - 4 may select the dedicated PHONO / LINE preamplifier

or one of the five stereo AUX Inputs as the source.

With normal program material playing, set the INPUT

GAIN control to a level that causes the SIG / OL indicator to

flash green. The SIG / OL indicator should not flash red. This

will ensure optimum signal to noise ratio and dynamic range. If

INPUT GAIN controls are set too high, you may not have the

required headroom for mixing multiple Inputs. If your levels are

set too low, signal-to-noise ratio is compromised.

In addition to optimizing noise and dynamic range, prop-

erly setting INPUT GAIN allows the MIX LEVEL control to

operate predictably over its entire range. The taper of the MIX

LEVEL control is non-linear and will have different attenuation

verses rotation characteristics depending on its position. As can

be seen in the figure below, if you are mixing between 30% and

60% of rotation, MIX LEVEL will behave much differently than

if operated between 65% and 95% of rotation.

the INPUT GAIN SIG / OL indicator to accurately indicate the

signal level. Adjust the MIC GAIN so the red OL indicator just

stays off during the highest signal peaks (if a microphone is in

use, yell into it). The MIC GAIN control should only have to be

set once for the source in use. Use the front panel INPUT GAIN

control for trimming the gain after installation.

Next adjust the rear panel MIC 1 and MIC 2 BASS and

TREBLE controls for the desired tonal quality. If you add a lot

of BASS or TREBLE boost, you may want to readjust the MIC

GAIN control to avoid possible overloading.

MIC 1 and MIC 2 each have an ENGAGE switch to the

right of the Input Selector. For a mic signal to be active, the

selector must be set to MIC and the MIC ENGAGE switch set

to ENGAGE (up).

When either of the switches is set to the ENGAGE posi-

tion, the BOOTH OUTPUT is ducked (attenuated) by 12 dB

(about ¼

) to reduce potential feedback. If you do not want the

BOOTH OUTPUT to duck when a MIC source is engaged,

you can remove the top cover and set the internal jumper accord-

ingly. There is an independent Ducker select jumper for MIC 1

and MIC 2.

It sounds like a lot of trouble to set the input stages up cor-

rectly, however, you will be amazed at how much better your

performance sounds.

MIX LEVEL

With the Input stages properly adjusted, you are free to

use the MIX LEVEL control for mixing. For most applica-

tions, channels will be mixed at about 70% to 100% rotation.

BOOTH and HOUSE level controls then set the output volume.

The MASTER SIG / OL indicator displays the signal level of the

mix. The Green SIG indicator should flash or remain on. The

Red OL indicator should remain off (it may flash occasionally,

but if it is on every beat it is too hot). To correct an overload con-

dition, one or more of the MIX LEVEL controls must be turned

down. The MASTER SIG / OL indicator monitors the signal

before and after the tone control, so if you use a lot of boost,

remember to monitor this indicator.

TONE CONTROLS

The MP 2016a uses high-performance tone control circuits

that isolate the signal into three bands. The level of each band

is independently controlled, and then recombined. This topol-

ogy provides full “kill” for TREBLE, MID and BASS. If all

three bands are set to the same level, there will be no change in

frequency response, only amplitude. It is the difference in settings

that determines the tonal quality of the signal. These advanced

tone controls provide excellent dynamic response with fixed

phase shift. Control is smooth and predictable. The tone controls

can isolate beats, vocals and “high-hat,” as well as adjust general

tonal quality. Remember that the dedicated Mic tone controls

(on the rear panel) are used to equalize the Microphone Inputs.

MIC / LINE INPUTS

Input channels 5 and 6 each have dedicated preamplifiers. A

rear panel switch allows setting these Inputs for MIC or LINE

level signals. Make sure you have the switch in the correct position

for your application. While these Inputs are designed for use with

dynamic microphones (no phantom power) or wireless micro-

phones with line level output, they will accept just about any

mono signal. While balanced operation is highly recommended,

these Inputs may be operated unbalanced with short cables to

the source (less than 10 feet or 3 meters). The source selectors for

Input channels 5 and 6 may select the dedicated MIC / LINE

preamplifier or one of the five stereo AUX inputs.

Prior to permanent installation

, adjust the preamplifier

GAIN, BASS and TREBLE controls (located on the rear panel)

for the intended source.

In addition to the MIC / LINE switch, each preamplifier has

a rear panel MIC GAIN trim. To properly set the MIC GAIN,

set the front panel INPUT GAIN control to “10.” This allows

Mix Level Taper

Rotation

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