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Manual
Sources
Solo to
Stereo
Stereo
L
C
Input A
Input B
Center
Stereo
Stereo
Solo
Solo
Return A
Return B
M-CH.
M-CH.
Mono
Input A
Input B
L/R
M-CH.
M-CH.
Return A
Return B
M-CH.
M-CH.
Return C
Return D
1
2
-1
0 1
-1
0 1
ø Rev
ø Rev
-2
2
-2
2
-3
3
-3
3
-4
4
-4
4
5
5
-5
-5
-6
6
-6
6
-7
7
-7
7
8
8
-8
-8
-9
9
-9
9
-10
10
-10
10
L
Trim
On
R
Trim
On
3
4
0 1
0 1
-1
-1
2
ø Rev
2
ø Rev
-2
-2
-3
3
-3
3
-4
4
-4
4
-5
5
-5
5
-6
6
-6
6
-7
7
-7
7
-8
8
-8
8
-9
9
-9
9
-10
10
-10
10
Trim
On
Trim
On
C
LFE
5
6
0 1
0 1
-1
-1
ø Rev
ø Rev
-2
2
-2
2
3
3
-3
-3
-4
4
-4
4
-5
5
-5
5
-6
6
-6
6
-7
7
-7
7
-8
8
-8
8
-9
9
-9
9
-10
10
-10
10
LS
Trim
On
Trim
On
RS
7
8
0 1
0 1
-1
-1
ø Rev
ø Rev
-2
2
-2
2
3
3
-3
-3
-4
4
-4
4
-5
5
-5
5
-6
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-6
6
-7
7
-7
7
-8
8
-8
8
9
9
-9
-9
-10
10
-10
10
Trim
On
Trim
On
L
R
t/o
t/o
Input
Multichannel Mastering Console MMC 2
Speaker Management
LFE to
L
R
R
LS
RS
LFE
t/o
t/o
L/C/R
Solo
Solo
Solo
Solo
Solo
Solo
Mono
Mono
Stereo
M-CH.
Operation
LS/RS
Operation
L
t/o
/R
t/o
MMC 2
Multichannel Mastering Console
1
Master Fader
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
L
Trim
3
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
Trim
C
5
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
LS
Trim
7
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
Monitor Level
Trim
L
t/o
Model 2486
Monitors
Dim
Stereo
Dim 1
A
-10 dB
Stereo
Dim 2
-20 dB
B
M-CH.
Dim 3
-30 dB
A
M-CH.
Mute
B
Insert
Return
On
On
Insert
Return
2
0 1
-1
0 1
Fader
Fader
2
-2
2
3
-3
3
On
On
4
-4
4
5
5
-5
6
-6
6
7
-7
7
8
8
-8
9
-9
9
10
-10
10
On
R
Trim
On
4
0 1
0 1
-1
2
Fader
2
Fader
-2
3
-3
3
On
On
4
-4
4
5
-5
5
6
-6
6
7
-7
7
8
-8
8
9
-9
9
10
-10
10
On
Trim
On
LFE
6
0 1
0 1
-1
Fader
Fader
2
-2
2
3
3
On
-3
On
4
-4
4
5
-5
5
6
-6
6
7
-7
7
8
-8
8
9
-9
9
10
-10
10
On
Trim
On
RS
8
0 1
0 1
-1
Fader
Fader
2
-2
2
3
3
On
-3
On
4
-4
4
5
-5
5
6
-6
6
7
-7
7
8
-8
8
9
9
-9
10
-10
10
On
Trim
On
R
t/o
Output
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Summary of Contents for Sound Performance Lab MMC2
- Page 1 Manual Multichannel Mastering Console MMC 2 Sources Speaker Management Solo to Stereo Stereo Input A Input B Center Stereo Stereo Solo Solo Solo Solo Solo Return A Return B M-CH. M-CH. Mono Mono Stereo Input A Input B Operation LS/RS M-CH.
- Page 2 The information in this document has been carefully verifi ed and is assumed to be correct. However Sound Performance Lab (SPL) reserves the right to modify the product described in this manual at any time. Changes without notice. This document is the property of SPL and may not be copied or reproduced in any manner, in part or full without the authorization of SPL.
- Page 3 Fade In ... Signal Flow ... Front Panel ... Control Elements ... Sources, Input Trims ... Insert/Return, Speaker Management, Monitors ... Before you operate the unit, fi rst check carefully whether the local voltage setting corresponds to the setting on the external transformer! Before switching on external transformer and MMC 2, the MMC 2 must be connected to the external transformer with the supplied multicore lead.
- Page 4 Fade In Master Fader The MMC 2 multichannel mastering console completes the range of SPL 120 V mastering consoles. Housed in a 19”/11U rack mount chassis the MMC 2 features the same unique 120 volts rails like the MMC 1 and DMC dual-channel mastering console to achieve the optimum audio performance.
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Page 5: Signal Flow
8 channel bus STEREO INPUTS (balanced) PHASE Balanced REVERSE input switch receivers (passive) M-CH. INPUTS (balanced) STEREO RETURNS (bal. receiver) M-CH. RETURNS (bal. receiver) insert send/ return (bal. drivers and receivers) TRIM ON INSERT TRIM ON switch/ switch/ BYPASS TRIM control switch TRIM control +/- 10 dB... -
Page 6: Front Panel
Front Panel Sources Speaker Management Solo to Stereo Stereo Input A Input B Center Stereo Stereo Solo Solo Solo Solo Return A Return B Mono M-CH. M-CH. Mono Stereo Input A Input B Operation LS/RS M-CH. M-CH. Return A Return B M-CH. -
Page 7: Control Elements
Sources The Sources section provides selection options for several stereo and multichannel input and return sources. The returns are ideally suited to select recorders, DAW, audio players, and so on. All Input buttons allow for switching between the input monitoring mode and the output monitoring mode. - Page 8 Control Elements Insert Return Insert Return Speaker Management Solo to Center Solo Solo Solo Solo Solo Mono Mono Stereo Operation LS/RS Monitors Stereo Dim 1 -10 dB Stereo Dim 2 -20 dB M-CH. Dim 3 -30 dB M-CH. Mute Insert/Return The MMC 2 offers an Insert/Return point after the Input Trims to include external processing equipment into the signal path.
- Page 9 Monitor Level The Monitor Level is controlled with a custom-made eight-tiered potentiometer. The MMC 2 does not employ DACs, step ladders or VCAs for this function, and the specifi ca- tions of this potentiometer are substantially better than either of these other options ever could be –...
- Page 10 Option: Master Bay MasterBay Sequence Processor Position Selection Processor Processor Processor Processor Processor Processor Processor Processor The MMC 2 can optionally be complemented with an automated insert box called MasterBay. The MasterBay consists of an 8U insert box and a remote control panel. Up to eight 8-channel processors can be connected to the insert box, which is operated by the MasterBay remote panel.
- Page 11 CANADA CANADA CANADA CANADA CANADA M-CH. METERING OUT CANADA 516-38 CANADA 516-38 M-CH. RETURN D EDAC EDAC INSERT RETURN INSERT SEND M-CH. RETURN C M-CH. RETURN B CANADA CANADA CANADA CANADA Rear Panel/XLR Wiring/Metering Out PUSH 516-38 Pin Wiring XLR Inputs EDAC 1 = Ground, 2 = hot (+), 3 = cold (-) 516-38...
- Page 12 Measurements Audio Precision INPUT/OUTPUT PHASE vs FREQUENCY MMC2 Channel 1 Direct,Pre,Insert,Return to Monitor Out Measures phase difference between Input to DUT and Output from DUT. Optimize to see the entire range. SPL IN-OUT PHASE.at2c Audio Precision INPUT/OUTPUT PHASE vs FREQUENCY MMC2 Channel 3 Direct,Pre,Insert,Return to Monitor Out Measures phase difference between Input to DUT and Output from DUT.
- Page 13 Audio Precision INPUT/OUTPUT PHASE vs FREQUENCY MMC2 Channel 5 Direct,Pre,Insert,Return to Monitor Out Measures phase difference between Input to DUT and Output from DUT. Optimize to see the entire range. SPL IN-OUT PHASE.at2c Audio Precision INPUT/OUTPUT PHASE vs FREQUENCY MMC2 Channel 7 Direct,Pre,Insert,Return to Monitor Out Measures phase difference between Input to DUT and Output from DUT.
- Page 14 100k Audio Precision INPUT/OUTPUT PHASE vs FREQUENCY MMC2 Input to REC Out Channel 1-2 4 X L/R Measures phase difference between Input to DUT and Output from DUT. Optimize to see the entire range. SPL IN-OUT PHASE.at2c THD+N vs AMPLITUDE...
- Page 15 Audio Precision MASTER FADER GAIN - FREQUENCY RESPONSE MMC2 MONITOR GAIN CH 1-8 L R Frequency Response from 20k to 20 Hz. F4 first to set 0 dBr at 1kHz. The 2 Ch Ampl Function Reading meter BW is set to <10 Hz >500kHz so the bandwidth is the same as the Level meter. Optimize for detail.
- Page 16 Audio Precision MASTER FADER GAIN - FREQUENCY RESPONSE MMC2 MASTER FADER SET 0,-12,+6 dB CH 1-8 Frequency Response from 20k to 20 Hz. F4 first to set 0 dBr at 1kHz. The 2 Ch Ampl Function Reading meter BW is set to <10 Hz >500kHz so the bandwidth is the same as the Level meter.
- Page 17 Audio Precision GAIN - FREQUENCY RESPONSE MMC2 PRE TRIM/POT CH 1-8 +17.5 +12.5 +7.5 +2.5 -2.5 -7.5 -12.5 -17.5 Frequency Response from 20k to 20 Hz. F4 first to set 0 dBr at 1kHz. The 2 Ch Ampl Function Reading meter BW is set to <10 Hz >500kHz so the bandwidth is the same as the Level meter.
- Page 18 Measurements Audio Precision MASTER MONITOR GAIN - FREQUENCY RESPONSE MMC2 MONITOR GAIN CH 1-2 PAD 10,20,30dB L R -2.5 -7.5 -12.5 -17.5 -22.5 -27.5 Frequency Response from 20k to 20 Hz. F4 first to set 0 dBr at 1kHz. The 2 Ch Ampl Function Reading meter BW is set to <10 Hz >500kHz so the bandwidth is the same as the Level meter.
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Page 19: Specifi Cations/Power Supply
Dynamic Range ›130 dB Max. input level ›30 dBu (Audio Precision generator limit +30 dBu) THD & Noise (+24 dBu) Recording Out: ›110 dBu Monitor Out: ›108 dBu Send: ›110 dBu Input impedance (balanced): 20 kOhm (Welwyn precision resistors, transformerless) Output impedance (balanced): ‹75 Ohm (CMR trimmers, transformerless) -
Page 20: Warranty
Warranty SPL electronics GmbH (SPL) products are warranted only in the country where purchased, through the authorized SPL distributor in that country, against defects in material or workman- ship. The specifi c period of this limited warranty shall be that which is described to the original retail purchaser by the authorized SPL dealer or distributor at the time of purchase.
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