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21
HELIX BOARD 12 PLUS
SPECIFICATIONS
Inputs
Total channels
6
Balanced Mono Mic/Line channel
4
Balanced Stereo Line Channel
2
AUX Return
2 Stereo
2T Input
Stereo RCA
Outputs
Main L/R Stereo
2 x 1/4” TRS, Bal.
ALT 3-4
2 x 1/4” TRS, Bal.
Rec Out with trim control
Stereo RCA
CTRL RM L/R
2 x 1/4” TS
Phones
1
USB 2.0 Interface
10 in & 2 out, 24-bit / 96 kHz
8 in & 2 out, 24-bit / 192 kHz
Channel Strips
6
Insert Points
2
AUX Send
2
Pan/Balance Control
Yes
Volume Controls
Rotary
Master Section
Stereo AUX Returns
2
Effects Return to Monitor
1
Control Room/Phones Level Control
Yes
Faders
Main L/R, 60mm fader
Metering
Number of Channels
2
Segments
8
Phantom Power Supply
+48VDC
Switches
Master
Effect Processor
100 programs plus tap delay;
foot switch (effect on/off, tap)
Frequency Response (Mic input to any output)
20Hz ~ 60KHz
+0/-1 dB
20Hz ~ 100KHz
+0/-3 dB
Crosstalk
(1KHz @ 0dBu, 20Hz to 20KHz bandwidth, channel in to main L/R outputs)
Channel fader down, other channels at unity
<-90 dB
Noise
(20Hz~20KHz; measured at main output, Channels 1-4 unit gain; EQ flat; all channels on main mix;
channels 1/3 as far left as possible, channels 2/4 as far right as possible. Ref6dBu)
Master @ unity, channel fader down
-86.5 dBu
Master @ unity, channel fader @ unity
-84 dBu
S/N ration, ref to +4
>90 dB