Summit Audio Element 78 EQ-200 User manual

MPE-200/EQ-200
by
Guide To Operations
for firmware version 2.19-2.23

Page 2 MPE-200 Guide to Operations
Important Safety Instructions
Always follow these basic safety precautions when using the MPE-200:
1) Read all the instructions before using the MPE-200. Keep these instructions.
2) Do not block or obstruct the ventilation holes in the side, or the fan opening at the
rear. Locate it away from heat sources such as heat registers, or other products that
produce heat.
3) If the MPE-200 is mounted in a rack case for portable use, rear support brackets
must be provided.
4) The MPE-200 in combination with an amplifier and speakers or headphones might
be capable of producing sound levels that could cause permanent hearing loss. Do
not operate for a long period of time at a high sound level or at a level that is
uncomfortable.
5) The MPE-200 has no user-serviceable parts other than the rear panel fuses. In event
of any of the following, please contact an authorized Summit service station:
•The MPE-200 does not appear to be operating normally or exhibits a marked
change in performance;
•It has been dropped, or the enclosure damaged;
•Liquid has been spilled into it or if it has been exposed to rain.
WARNING:
TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS APPLIANCE TO
RAIN OR MOISTURE.
ATTENTION:
POUR EVITER TOUS RISQUES D'INCENDIE OU DE
DECHARGE ELECTRIQUE, NE PAS EXPOSER A LA
PLUIE OU A L'HUMIDITE.
Grounding Instructions
Improper grounding can cause a risk of electric shock. Check
with a qualified service person or electrician if you doubt the
product is properly grounded.
The MPE-200 must be grounded. In the event of a malfunction,
grounding provides a path of least resistance for electric current to reduce
the risk of electric shock. This product is equipped with a cord having a
grounding conductor and a grounding plug. The plug must be plugged
into an electric supply outlet that is properly installed and grounded in
accordance with all local rules and electrical standards. Protect the power
cord from being walked on or pinched particularly at plugs, convenience
recepticals, and the point where they exit from the apparatus.
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MPE-200 Guide to Operations Page 3
TABLE OF CONTENTS
IMPORTANT SAFETY INSTRUCTIONS.....................................................................2
GROUNDING INSTRUCTIONS .....................................................................................2
1. UNPACKING AND CONNECTING .......................................................................4
AUDIO CONNECTIONS ....................................................................................5
2. SYSTEM OVERVIEW..............................................................................................6
CHANNEL STATUS...........................................................................................8
3. INPUT SCREENS......................................................................................................9
MIC GAIN SCREEN (GREEN).................................................................................9
HP/LP FILTER SCREEN (AMBER).......................................................................10
INPUT SETUP SCREEN (YELLOW)......................................................................11
4. EQUALIZER SECTION.........................................................................................12
EQUALIZER OVERVIEW................................................................................12
BOOST /CUT CONTROL.................................................................................12
FREQUENCY CONTROL.................................................................................12
QCONTROL......................................................................................................13
5. MASTER SCREENS................................................................................................14
MASTER CHANNEL SELECT.........................................................................14
EQ GAIN TRIM.................................................................................................14
MASTER PRESET SCREEN (AMBER).................................................................15
MASTER SETUP SCREEN (YELLOW).................................................................15
OUTPUT FADER SCREEN (DARK GREEN)..........................................................17
6. MIDI..........................................................................................................................18
7. SLEEP MODE..........................................................................................................19
8. FUSE AND VOLTAGE SELECTION...................................................................20
FUSE INSPECTION OR REPLACEMENT ......................................................20
VOLTAGE SELECTION.................................................................................211
9. REGISTRATION...................................................................................................212

Page 4 MPE-200 Guide to Operations
1. UNPACKING AND CONNECTING
1.1 Carefully unpack the unit and report any shipping damage
promptly to your Summit dealer and to the carrier.
1.2 The MPE-200 is normally shipped set up for 115 volt AC
(100-125 volts is OK).
For 200-230 and 230-250 volt AC operation, the rear
panel voltage selector should be set to 240v. The fuses
should be slow-blow type, 0.8 amp for 90-125v or 0.4
amp for 200-250v.
ATTENTION:
UTILISER UN FUSUBLE DE RECHANGE DE MEME TYPE
DE 0.8 A - 90-125v, 0.4 A - 200-250v.
ATTENTION:
DEBRANCHER AVANT DE REMPLACER LE FUSIBLE.
For more information on fuses and voltage selection, see
section 8 at the back of this manual.
1.3 Turn the unit on by using the rocker switch at the rear power
entry. For rack mounting, leave this power switch on, and use
the front panel Sleep control to turn off or on. See section 7
for details.
1.4 Due to its Class A circuit design, the MPE-200 will run warm.
Its quiet, low-speed fan ensures safe operation over a wide
range of ambient temperatures.
Be careful not to block the vent holes on the right side
panel or the fan opening on the rear of the MPE-200.
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MPE-200 Guide to Operations Page 5
1.5 AUDIO CONNECTIONS
Mic and Eq inputs and outputs are all balanced and floating,
using standard 3-pin connectors on the rear panel. Outputs
are transformer coupled.
To interface unbalanced equipment, connect signal to pin 2,
and tie pin 3 to pin 1. The inputs will also work if connected
'pin 3 hot', but the phase will be inverted.
The Mic inputs can accept up to +21 dBu (+18 dBu if
unbalanced) when set to zero gain, and can be used with
most line level signals. The Mic Pre outputs are always
active. When Eq In is selected, you can insert external
equipment between the Mic Pre outputs and the EQ inputs.
See section 3.3 for details.
INPUT / OUTPUT SPECIFICATIONS
Mic In:
Impedance: 10k ohms
Maximum input level +21 dBu
(at 0 gain)
Line In:
Impedance: 10k ohms
Maximum input level +21 dBu
(at 0 gain)
Outputs:
Maximum level +24 dBu
(internal jumper installed) +28 dBu
All outputs are balanced and transformer isolated

Page 6 MPE-200 Guide to Operations
2. SYSTEM OVERVIEW
2.1 The MPE-200 provides two independent channels
which can be controlled separately, or as a stereo pair.
See section 5.4 for details on selecting the channel
mode.
2.2 The Signal flow of one channel is shown below. Note
that the gain trim is in front of the EQ modules, and that
the output meter tap is before the fader. These facts are
important for proper operation of the MPE-200.
Signal Flow of an MPE Channel
PREAMP FILTERS
G
AI
N
BYPASS
XFMR
OUTPUT
STAGE
MIC OUT
XLR
MIC IN
XLR
EQ IN
XLR
+48
GAIN
TRIM EQ (4)
BYPASS
XFMR
OUTPUT
STAGE
EQ OUT
XLR
IN SEL. METER
METER
FADER

MPE-200 Guide to Operations Page 7
SYSTEM OVERVIEW (ctd)
2.2 The MPE-200 has six control modules which are labeled on
the front panel. The outer two modules control Input
functions (mic gain, HP/LP filters, and setup) on the left, and
Master functions (gain trim, presets, setup and fader) on the
right. The four remaining modules control each of the four
equalizer bands, which are post mic preamp. The EQ may be
used separately from the mic preamps which have their own
outputs.
2.3 The MPE-200 uses two types of controls: Displays Switches
and Encoders. In general, pressing the display switch changes
the screen to a new mode. Turning the encoder changes the
parameter, and pressing the encoder knob selects the
parameter associated with that encoder. The display screen
backlight color is used to convey status for each module, but
this information is also contained in the screen contents, to
accommodate users whose color perception is impaired.

Page 8 MPE-200 Guide to Operations
2.4 CHANNEL STATUS
Channel status is displayed by a lock icon, showing both
unlocked or locked status, as well as channel and EQ
selection.
Channel selected or EQ on, preset unlocked
Channel selected or EQ on, preset locked
Channel unselected or EQ off, preset unlocked
Channels unselected or EQ off, preset locked
These icons also show what is being controlled by the
associated encoder(s). When a preset is unlocked, all changes
made to that preset will automatically be saved. If the preset is
locked, settings can still be changed and the changes will affect the
audio path, but these changes will be lost when another preset is
loaded or the MPE-200 is turned off.
Preset Memory
and
Control Flow
NOTE: A special situation occurs when recalling a preset on a single channel
that has the same number as the preset on the other channel. In this instance, the
new preset will acquire the settings of the other channel, even if the new preset
is locked. For example, say Channel A has preset 1 loaded and it is locked, and
channel B has preset 2 loaded. Changes are made to channel A. If preset 1 is
now recalled on channel B, the changes made on channel A will also be applied
to channel B, even though these changes have not been stored in preset 1 (which
is locked). See section 5.3 to learn more about how presets work.
Load preset
Working
Memory Preset
memory
Control chan
g
es Locked?
No Yes
Audio Si
g
nal Control Don’t Save

MPE-200 Guide to Operations Page 9
3. INPUT SCREENS
The input controls are located on the far left of the MPE-200. Press
the Display Switch to select the Mic Gain, Filter, or Setup screens;
press the Encoder Knob until the desired item flashes and rotate
the knob to modify the selected item.
3.1 MIC GAIN screen (green).
Mic gain for Channel B selected,
preset for Channel B locked
•The Mic Gain control can apply to either or both channels. The
lock icons show which gain(s) are currently being controlled.
Pushing the knob selects chan A, chan B, or both channels.
Gain offsets can be obtained be selecting each channel
individually and selecting a gain amount, then selecting both
channels. This operation emulates a clutched stereo analog
control in that the offset is removed if both channels are set to
minimum or maximum gain.
•The Mic Gain control is always in fine mode, or one dB per
click. Note that even in Master stereo mode, individual mic
gain adjustments are possible, and both mic gains are stored in
a single preset when used for stereo operation.
•The Mic peak indicator triggers at +20 dBu (entire screen
changes to red), or 3 dB before clipping begins. The meter
indicates a ranges of –43 dBu to +15 dBu, with a reference
level marker at 0 dBu. The A channel level is shown by the
upper meter bar.
9 dB
5 dB
………..:.. Chan A level
Chan B level
Chan A gain
Chan B
g
ain

Page 10 MPE-200 Guide to Operations
3.2 HP/LP FILTER screen (amber).
Highpass filter at 20 Hz and
lowpass filter at 30 kHz selected
This screen controls the two 12 dB/octave filter sections of the
MPE Mic Preamps. Each filter can be highpass or lowpass, and if
both are set to the same frequency, the resulting slope is 24
dB/octave. Push the knob to select either filter. Rotate the knob to
select the desired frequency, or an off position. When off, these
filters are completely removed from the signal path.
[*]The filter settings shown are applied to the active
channels(s) determined by the Master channel selector
(see section 5.1), not the channel(s) selected on the mic
gain screen.
20 30
Hz kHz