SPL Marc One User manual
Marc One
MonitoringandRecording Controller
32 Bit/768 kHz AD/DA converter
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N U MBE R One I N SO U N DN U M B E R One I N SO U N D
1
Read the security advices on page 6!
2
Read the installation instructions of the included external
power supply on page 8.
3
Make sure that the Power switch on the rear is set to O
(O = out position / ON = in position).
4
Connect the included power supply to the DC input and
an appropriate mains socket outlet.
5
Connect your speakers to the Speaker Outputs.
You can connect two pairs of active stereo speakers – A and B. The A
Speaker Output has a dedicated Sub Output for an active subwoofer.
6
Connect your headphone to the headphone output.
7
Connect your analog sources to the Line Inputs.
8
Connect your computer or mobile device to USB.
9
Connect the Line Out to your analog audio device.
The Line Out carries the mix (Monitor) between the Line Inputs and
USB playback. The level is unity gain, thus independent of the volume
control.
10
Set the dip switches to your needs.
Dip switch 1 on/down = attenuate the speaker outputs by 10 dB.
Dip switch 2 o/up = USB is recording Line Input 1.
Dip switch 2 on/down = USB is recording the sum of Line Input 1 and 2.
11
Turn down speaker and headphone volume.
12
Switch the on Marc One by pressing the Power button.
13
Choose speaker output A or B.
14
Select a monitoring mode: stereo, mono or L/R swapped.
15
Set the volumes and the crossfeed to taste.
16
Playback your music from the Line Inputs and/or USB.
17
For playback blend between the Line Inputs and USB.
18
Record your music with your DAW via USB.
The OVL leds light up when the AD converter clips.
19
Have fun!
More information: SeriesOne.spl.audio
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Marc One 3
Specications
Analog inputs & outputs; 6.35 mm (1/4") TRS Jack (balanced), RCA
Input gain (max.) +22.5 dBu
Line Input 1 (balanced): Input impedance 20 kΩ
Line Input 1: Common mode rejection < 60 dB
Line Input 2 (unbalanced): Input impedance 10 kΩ
Output gain (max.): Speaker Outputs (600 Ω) +22 dBu
Line Output (unbalanced): Output impedance 75 Ω
Speaker Output 1 (balanced): Output impedance 150 Ω
Sub Output low lter none (full range)
Sub Output (balanced): Output impedance 150 Ω
Speaker Output 2 (unbalanced): Output impedance 75 Ω
Frequency range (-3dB) 10 Hz - 200 kHz
Dynamic range 121 dB
Noise (A-weighted, 600 Ω load) -99 dBu
Total harmonic distortion (0 dBu, 10 Hz – 22 kHz) 0.002 %
Crosstalk (1 kHz) < 75 dB
Fade-out attenuation -93 dB
USB, 32-Bit AD/DA
USB (B), PCM sample rates
USB (B), DSD over PCM (DoP),
sample rates (playback only)
0 dBFS calibrated to 15 dBu
Noise (A-weighted, 44.1/48 kHz
sample rate)
THD + N (-1 dBFS, 10 Hz – 22 kHz) 0.0012 %
Dynamic range (44,1/48 kHz
sample rate)
44.1/48/88.2/96/176.4/192/
352.8/384/705.6/768 kHz
2.8 (DSD64), 5.6 (DSD128), 11.2
(DSD256) MHz
-113 dBFS
113 dB
4 Marc One
Headphones Output; 6.35 mm (1/4") TRS Jack
Internal Power Supply
Wiring
Source impedance 20 Ω
Frequency range (-3 dB) 10 Hz - 200 kHz
Noise (A-weighted, 600 Ω) -97 dBu
THD + N (0 dBu, 10 Hz – 22 kHz, 600 Ω) 0,002 %
THD + N (0 dBu, 10 Hz – 22 kHz, 32 Ω) 0,013 %
Max output power (600 Ω) 2 x 190 mW
Max output power (250 Ω) 2 x 330 mW
Max output power (47 Ω) 2 x 400 mW
Fade-out attenuation (600 Ω) -99 dB
Crosstalk (1 kHz, 600 Ω) -75 dB
Dynamic range 117 dB
Reference: 0 dBu = 0,775V. All specications are subject to change without notice.
Tip = Left, Ring = Right,
Sleeve = GND
Operating voltage for analog audio +/- 17 V
Operating voltage for headphone amplier +/- 19 V
Operating voltage for relays +12 V
Operating voltage for digital audio +3.3 V, +5 V
External Power Supply
AC/DC switching adapter Mean Well GE18/12-SC
DC plug (+) pin 2.1mm; (-) outside ring 5.5mm
Input 100 - 240 V AC; 50 - 60 Hz; 0.7 A
Output 12 V DC; 1.5 A
Dimensions & Weight
W x H x D (width x height incl. feet x depth)
Unit weight 1,45 kg / 3,2 lb
Shipping weight (incl. packaging) 2 kg / 4,4 lb
210 x 49,6 x 220 mm /
8,23 x 1,95 x 8,66 inch
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Marc One 5
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