Allen&Heath WZ 20S SERVICE MANUAL - Manual (Page 6)

WZ20S S ERVICE M ANUAL 5
Specifications
0dBu = 0.775 Volts rms +4dBu = 1.23V rms
0dBV = 1 Volt rms -10dBV = 316mV rms
INTERNAL HEADROOM:
....................................... Channels ........................ +21dB
....................................... Mix to output ................... +23dB
MAXIMUM OUTPUT LEVEL:
XLR ..........................................+26dBu into >2k ohm load
TRS jack ...................................+21dBu into >2k ohm load
PEAK INDICATORS:..............Turn on 5dB before clipping
METERS:
........... MIX 1,2 / MONITOR Peak reading 12 led 3 colour
FREQUENCY RESPONSE:
......................................................20Hz to 50kHz +0/-1dB
DISTORTION: THD+noise @ +14dBu 1kHz
............................................................................ < 0.006%
CROSSTALK: Channel shutoff measured at 1kHz
................................................................................ < 90dB
NOISE: Measured rms 22Hz to 22kHz
MIC EIN: referred to 150 ohm source
................................................................................-128dB
RESIDUAL OUTPUT NOISE:
........................................... XLR -90dBu (-94dB S/N)
........................................... TRS jack -94dBu (-94dB S/N)
MIX NOISE, CH ROUTED:
........................................... XLR -86dBu (-90dB S/N)
........................................... TRS jack -90dBu (-90dB S/N)
POWER SUPPLY: 100 to 240V AC @ 50/60Hz
Internal switch mode power unit with auto sensing mains
input.
Power Consumption ............................................35W max
Mains fuse rating 100-240VAC .................T500mA 20mm
Connections
INPUTS:
Mic in...................... XLR.....................pin 2 hot, 3 cold, balanced ..............................2k Ohm......... variable –60 to -20dBu
Line in..................... TRS jack .............tip hot, ring cold, balanced ..............................>10k Ohm..... variable –30 to +10dBu
Stereo Ch in A........ RCA PHONO ......unbalanced......................................................>10k Ohm..... variable –20 to +10dBu
Stereo Ch in B........ TRS jack .............tip hot, ring cold balanced ...............................>10k Ohm..... variable –20 to +10dBu
EXT in 1-2 .............. TRS jack .............tip hot, ring cold balanced ...............................>10k Ohm..... variable –10dBV (+4dBu option)
OUTPUTS:
Direct out 1-4.......... TRS jack .............tip hot, ring cold, impedance balanced..........<75 Ohm ........ 0dBu
Mix out 1-2 ............. XLR.....................pin 2 hot, 3 cold, balanced ............................<75 Ohm ........ +4dBu
Mix out 2................. TRS jack .............tip hot, ring cold, impedance balanced..........<75 Ohm ........ -2dBu
Mono out ................ XLR.....................pin 2 hot, 3 cold, balanced ............................<75 Ohm ........ +4dBu
Aux out 1-6............. TRS jack .............tip hot, ring cold, impedance balanced..........<75 Ohm ........ -2dBu
Phones out 1, 2 ...... TRS jack .............tip left, ring right.............................................for stereo headphones 75 to 600 Ohms
INSERTS:
Mono Channel:
Send....................... TRS jack .............tip send, ring return, unbalanced...................<75 Ohm ........ 0dBu
Return .................... TRS jack .............tip send, ring return, unbalanced...................>3k Ohm
Mix out 1-2:
Send....................... TRS jack .............tip send, ring return, unbalanced...................<75 Ohm ........ -2dBu
Return .................... TRS jack .............tip send, ring return, unbalanced...................>7k Ohm