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S2
All auxiliaries =
5.1 SPECIFICATION
Measurements are with 22-22KHz filters unless otherwise stated.
All specifications are in the frequency range 40-15KHz unless otherwise stated.
Measurements specified are with equaliser and dynamics out of circuit.
0dBu = 0.775 volts RMS dBq = CCIR QUASI-PEAK Normal operating level = 0dBu (peak +8dBu or +6dBu)
Inputs
Microphones: Sensitivity = +18dBu to -78dBu
Lines: = +18dBu to -24dBu
Normally fed from source impedance: Mic = 200 Ω
Line = 40 Ω
Maximum input levels: Mic & Line = +24dBu
Input impedance: Mic = 1.2K Ω -24 to -75dBu (Hi gain)
(Electronic balance) = 10K Ω +15 to -18dBu (Lo gain)
Line = 10K Ω
Common mode rejection (CMR)
Mics - hi gain - 200 Ω source = >75dB at 1KHz
>60dB at 15KHz
Mics - lo gain - 200 Ω source = >70dB at 1KHz
& Lines >50dB at 15KHz
Other inputs (Insert Returns, Dir I/Ps) -40 Ω source = >40dB at 1KHz
Outputs
Maximum output levels Principal outputs (transformer) +24dBu into 10K Ω
incl. Main Outputs 1&2 (Stereo & Mono) = +24dBu into 600 Ω at 1KHz
+22dBu into 300 Ω at 1KHz
+23dBu into 600 Ω at 1KHz
+22dBu into 300 Ω
Other outputs (electronic) = +24dBu into 10K Ω
= +23.5dBu into 600 Ω
= +20.5dBu into 300 Ω
Output impedances: Transformer = 25 Ω Main/50 Ω Aux
Electronic = 40 Ω
Output balance: Transformer = -40dB at 1KHz
Electronic = -40dB at 1KHz
Output common mode rejection: Transformer = -70dB
Electronic = -50dB
Outputs can withstand an input of +12dBu from a source impedance of 10 Ω. All main, auxiliary & direct outputs
can withstand phantom power backfeed.
Inputs Headroom
Above any input gain setting up to a max. input of +24dBu: Mics = 36dB with 8dBu auto gain ranging
Other = 28dB
Fader Tolerances
Working range +10dB = +0.5dB
-10 to -30dB = 1dB
Below -30dB = +5dB
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