SM Pro Audio Q-Pre: 4 channel microphone preamp - Manual (Page 7)

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11. Q-DI Back panel
11.1 Balanced XLR outputs
Balanced signal output to connect to a mixer, stage box, etc.
11.2 Unbalanced RCA MIX output
Your own independent mix for monitoring.
12. APPLICATION
12.1 Using the Q-DI as a DI Box
Connect the signal you would like to convert from unbalanced to balanced to the
Q-DI via a 1/4 inch unbalanced jack to one of the channel inputs on the front panel of
the unit. Connect an XLR balanced cable to the corresponding channel output on the
rear of the Q-DI and connect to your chosen destination. If the input signal strength
is too high you can depress the 20dB PAD. If there is an earth loop hum you can
remove by depressing the earth lift switch.
12.2 Using the Q-DI as a line mixer
You can mix volume & pan of all input signals to a single stereo pair of RCA con-
nections on the rear of the Q-DI. This enables use of the unit as a fully functional
line mixer. Just connect the RCA stereo master outputs on the rear to your chosen
destination and adjust the individual volume and pan controls for each individual
channel on the front of the Q-DI to suit your needs.
13. SPECIFICATIONS
AUDIO INPUTS: Connectors 1/4“ jack
Type TRS balanced
Impedance 47k Ohms
Min Sensitivity -20dB
Peak input level +16dB
STEREO LINE MIXER OUTPUTS:
Connectors RCA
Impedance 600Ohms
Max. output level +2dB (peak level +18.5 dB)
XLR BALANCED OUTPUTS:
Connectors XLR
Type balanced
Min. output impedance 600Ohms
Max. output level 0dB (peak level +18.5dB)
DIST, FREQ, S/N RATIO & CROSSTALK:
Frequency response 20Hz~20kHz, 0dB~-2B
Distortion 0.02%
S/N Ratio better than 74dB
Crosstalk rejection >80dB@1kHz;-20dB input
POWER SUPPLY: ~ 100-120 V AC, ~ 200-240 V AC, 50-60 Hz
Power consumption 11.5VA
Fuse 100-120 V AC: 630 mA (slow-blow)
200-220 V AC: 315 mA (slow-blow)
PHYSICAL: Dimension 1 3/4“ (44.5 mm) * 8“ (230.6 mm) * 8 1/2“ (217 mm)
Net weight approx. 1.75 kg