McLelland MCR-61 User manual

MCR-61
MIC/SOURCE MIXER
OWNER MANUAL
0 10
POWER
MCR-61
MIC/SOURCE
MIXER
IN
OUT
PWR
-10 +10
00
CLIP CLIP CLIP
MASTER
LEVEL TREBLE BASS
STEREO
LEVEL 3 LEVEL 2 LEVEL 1 LEVEL 3 LEVEL 2 LEVEL 1
MICROPHONE
FX-LEVEL
FX LOOP
-10 +10
0 10 0 10 0 10 0 10 0 10 0 10 0 10

INTRODUCTION
Thanks for your choice of MCR-61 and it offers an opportunity toeasily combine
six sources-3 mics and 3 stereo line inputs, or 3 balanced lines and 3 stereo
line inputs. This unit is designed for any application where microphones must
be mixed with sources such as CD players, cassette decks, or AM/FM tuners.
Applications may include aerobics studios, restaurants, hotels, Karaoke
lounges, or audio visual applications. It's versatile inputs and outputs as well as
commercial grade design make it an important problem solver in many audio
situations.
Each Microphone input has Mic/Line switching, individually switchable
+12VDC phantom power, and an LED overload indicator. The FX Loop is
provided for adding effectsor signalprocessors tothe Microphoneinputs, or for
use as a fourth stereo input.
FEATURE
Three XLR balanced Mic/Line inputs, with Phantom Power jumpers
Three stereo source inputs for cassette players, tuners, etc.
Clip indication on the microphone channels
Mic/Line level switches for each Mic input
FX Loop for the microphone inputs
Bass and Treble controls
Mono/Stereo switch
Stereo RCA Record Output jacks

Mic 1 3: Adjust the volume of input from the Mic/Line Inputs.
CLIP LED: Indicates overload in the channel. The LED lights 3 dB below clipping.
TONE: 1 3: Adjust the frequency content of the signal in the channel clockwise
increase the higher frequencies or Treble portion of the signal, turning the
control counterclockwise increases the Bass portion.
Source 1 4: Adjust the volume of input from the RCA Source Inputs.
FX In/Out Switch: Engages the signal through the FX loop jacks.
FX Level: Adjusts the amount of signal from the FX Return jack.
Bass: Adjusts the low frequencies of the Mic signals.
Treble: Adjusts the high frequencies of the Mic signals.
Master Volume: Adjusts the overall level from the main outputs.
DESCRIPTION
FRONT PANEL
0 10
POWER
MCR-61
MIC/SOURCE
MIXER
IN
OUT
PWR
-10 +10
0
-10 +10
0
0 10 0 10 0 10 0 10 0 10 0 10 0 10
CLIP CLIP CLIP
MASTER
LEVEL TREBLE BASS
STEREO
LEVEL 3 LEVEL 2 LEVEL 1 LEVEL 3 LEVEL 2 LEVEL 1
MICROPHONE
FX-LEVEL
FX LOOP
Mic 1 3: XLR inputs for dynamic or condenser microphones, or balanced line level
signals.
Mic/Line Switch: Pads the XLR Mic input by 30 dB when in.
DIP SWITCH: contains the jumpers for engaging Mic 1 3 phantom power, the talkover
functions, and the Mono/Stereo select.
MIC INSERT: 1/4 TRS insert jack for adding external processing to the Mic signals.
Tip=send, ring=return.
SOURCE INPUTS: Stereo RCA jacks, Channels 1 4, for connection to stereo sources
such as AM/FM tuners, cassette players, CD players, or video players.
RECORD OUT: Stereo RCA jacks, contains all mixed signals before the Remote
Volume jacks.
REMOTE VOLUME: 1/4 TS jack for connection to a remote potentiometer for master
volume control, 20 K Ohm audio taper potentiometer is recommended.
REAL PANEL

Phantom Power Jumpers: Connects the phantom power to the indicated
Microphone input.
FX Send: 1/4 unbalanced jack for connection to an external effects device.
FX Return Right and Left: 1/4 unbalanced jacks for connection to the
external effects output(s).
Source 1 3: RCA inputs for connection to stereo sources such as cassette
players, CD players, etc.
MAIN OUTPUTS: 1/4 TRS balanced Right and Left Outputs.
CONNECTION
Connect low impedance microphones to the Mic inputs. If a paging
microphone is being used, connect it to Mic Input 1. Connect
source signals such as CD players, cassette players or video
players to the RCA Source Inputs.
Remote Volume Control
To control the overall output volume of the MCR-61 in a remote
location, a 20K Ohm audio taper potentiometer should be wired to a
1/4 tip-sleeve plug and connected to the Remote Volume jack.
Mic Insert
To connect a signal processor to the MCR-61 microphone signal(s),
use an insert plug, or cable wired.
Connect the Main Right and Left outputs to the power amplifiers.
The MCR-61 output jacks will accommodate balanced or
unbalanced connections. For unbalanced operation use1/4 Tip
Sleeve jacks, for balanced operation use 1/4 Tip Ring Sleeve
jacks. If a 1/4 TRS to XLR cable is needed, wire the Tip of the 1/4
jack to pin 2 of the XLR, the Ring to pin 3, and the Sleeve to pin 1 or the shield.
OPERATION
After proper microphone, source, insert and remote volume control
connections have been made, connect the MCR-61 to a properly
grounded AC outlet.
DIP SWITCH SETTINGS
If a microphone requires phantom power, move the Mic channel's
corresponding PHAN DIP switch to the down position. This applies
12 volts dc phantom power to the indicated microphone.

Talkover switch 1 (T.O. 1), when in the down position, all program material on
all Source inputs will be ducked or muted when a signal is present at Mic 1.
This function is used for paging. When a person talks into Mic 1, and the
Talkover 1 switch is on(down), all source signals will be muted.
Talkover switch 2 (T.O. 2), when in the down position, Source 1,2, and 3 will
be ducked or muted by the signals at Source 4.
This function is for jukebox priority. With a jukebox connected to Source input
4, and the Talkover switch 2 on (down), the other Source input signals such as
background music, will be muted and only the jukebox will be heard.
The Mono/Stereo switch selects the output mode. When the switch is down,
the unit is in stereo mode. When the switch is up, the stereo signals are mixed
to mono and sent to both the Right and Left Main output jacks. Either jack can
be used as a mono output.
Move the Power switch to the on position so the red portion of the switch is
showing to apply power to the MCR-61.
Adjust the Microphone levels for maximum input signal without clipping, and
for a comfortable listening level. Adjust each Source level for a desired
listening level.
SPECIFICATIONS
Input Impedance: Mic: 600 Ohms XLR balanced
Line: 22K Ohms
Source: 22K Ohms gold plated RCA
Mic Insert: 22K Ohms 1/4 TS unbalanced.
Max Input Level: Mic: -14dBV Mic level
+20dB line level
Source: 24 dBV
In/Out Connector: XLR 3, Stereo RCA 4,
1/4 TRS 3, 1/4 TS 1
Phantom Power: +12 VDC
Output Level: +17 dBV max
Output Impedance: 51 Ohms
Max Gain: Mic: 60 dB
Source: 26 dB
Tone Controls: +/- 12 dB 100 Hz Bass
+/- 12 dB 11K Treble
Nose Floor: - 80 dB, THD: <.025%, S/N Ratio: 96 dB
Size:
Weight:
2.2 Kg
19LX 1.75H(inch)
6WX