Surface Getting Started Guide
19
AP10826 Issue 3
6.
Technical specs
Inputs
System
Mic/Line XLR Inputs
Balanced XLR, +48V phantom power
Measured balanced XLR in to XLR out, 20-20kHz, minimum Gain,
Pad out
Mic/Line Preamp
Fully recallable
Dynamic Range
110dB
Input Sensitivity
-60 to +15dBu
System Signal to Noise
-92dB
Analogue Gain
+5 to +60dB, 1dB steps
Frequency Response
20Hz - 30kHz +0/-0.8dB
Pad
-20dB Active PAD
THD+N (analogue in to
out)
0.0015% @ +16dBu output, 1kHz
0dB gain
Maximum Input Level
+30dBu (PAD in)
Headroom
+18dB
Input Impedance
>4kΩ (Pad out), >10kΩ (Pad in)
Internal operating Level
0dBu
Mic EIN
-127dB with 150
Ω
source
dBFS Alignment
+18dBu = 0dBFS (+22dBu at XLR
output)
Phantom Power
indication
Per socket, internal or external
phantom power sensing, triggered at
24V
Meter Calibration
0dB meter = -18dBFS (+4dBu at
XLR out)
Digital Inputs
AES3 2 Ch XLR, 2.5Vpp balanced
terminated 110
Ω
Meter Peak indication
-3dBFS (+19dBu at XLR out)
SRC range 32k - 192kHz, with bypass
option
Sampling Rate
96kHz +/- 20 PPM
Outputs
ADC
24-bit Delta-Sigma
DAC
24-bit Delta-Sigma
Analogue XLR Outputs
Balanced
Latency
0.7 ms (MixRack XLR in to XLR out,
Input to Mix)
Output Impedance
<75Ω
+ 5 samples, Surface to Mixrack
(GigaACE hop)
Nominal Output
+4dBu = 0dB meter reading
+ 8 samples, DX32 to Mixrack (DX
hop)
Maximum Output Level
+22dBu
Residual Output Noise
-92dBu (muted, 20-20kHz)
Operating Temperature
Range
0 deg C to 35 deg C (32 deg F to 95
deg F)
-90dBu (muted, 20-40kHz)
Mains Power
100-240V AC, 50-60Hz, 110W max
Digital Outputs
AES3 2 Ch XLR, 2.5Vpp balanced
terminated 110
Ω
96kHz sampling rate, switchable to
48kHz, 44.1kHz
USB Audio playback
Mono/stereo .WAV files, 16/24bit,
44.1/48/96kHz
USB Audio recording
Stereo .WAV files, 24bit 96kHz
Dimensions and
Weights
Width x Depth x Height x Weight
Boxed
Width x Depth x Height x Weight
C1500
485 x 665 x 325 mm (19"x 26.2"x
12.8") x 18kg (39.7lbs)
C1500
700 x 870 x 480 mm (27.6"x 34.3"x
18.9") x 24.8kg (54.7lbs)
C2500
775 x 665 x 325 mm (30.5"x 26.2"x
12.8") x 24.5kg (54lbs)
C2500
950 x 870 x 480 mm (37.4"x 34.3"x
18.9") x 33kg (72.8lbs)
C3500
885 x 665 x 325 mm (34.8"x 26.2"x
12.8") x 28kg (61.7lbs)
C3500
1060 x 870 x 480 mm (41.7"x 34.3"x
18.9") x 37.5kg (82.7lbs)