Operation Manual

© 2010
TROUBLESHOOTING
NO OUTPUT -
Check mains power is on
Check leads and connections
Check MASTER LEVEL and mic or channel fader is turned up
Check CROSSFADER by trying the DEFEAT switch
DISTORTED OUTPUT -
Check line input isn't connected to PHONO
Check channel and MASTER faders are not too high
Check volume control of amplifier, active speakers or recording equipment
MICROPHONE FEEDBACK
Eliminate “line-of-sight” between mic(s) and speakers
Check DELAY is not set too high
Adjust Hi or Lo EQ and/or level controls
MICROPHONE OUTPUT
No output – check if mic switched off
No output – check if phantom power source is required
Low output – ensure mic is not switched to “pad” or “Hi Z”
Quiet vocals – ask singer to sing closer to mic.
DELAY EFFECT
Metallic effect but no delay – increase TIME control to produce more natural echo
No delay effect – increase DELAY controls, check nothing is plugged into RETURNS
TOO QUIET -
Check turntable is not connected to line input
Check channel and MASTER faders are not too low
Check for volume control on sound source
SPECIFICATIONS
Parameter Mic Phono Line/CD
Sensitivity -53dBu 46dBu 0dBu
(1.73mV) (4mV) (775mV)
Input Impedance 2K 47K 50K
Max Gain 50dB <-70 to +10dB
S/N Ratio 68dB 73dB > 87dB
Freq Response 25Hz to 30KHz RIAA < 10Hz to 24 KHz
THD 0.042% < 0.005%
Microphone Equalisation
Lo = ± 12dB @ 80Hz
Mid = ± 12dB @ 600Hz
Hi = ± 12dB @ 6KHz
Music Channel Equalisation
Lo = ± 12dB @ 100Hz
Mid = ± 12dB @ 1KHz
Hi = ± 12dB @ 10KHz
Noise Floor
Main L, R Output: < -100dBu
Mic Pre-Amp T.E.I.N. - 118dBu
Headphones
Load: 32 Ohms MIN
Power: 112mV @ 32 Ohms
Freq Response. 11Hz to 25KHz
S/N 81dB
Output
Master L, R Output: Balanced XLR: 0 dBu (775mV rms)
Unbalanced Phono: 0 dBu (775mV rms)
Booth, Aux Outputs: Unbalanced Phono: 0 dBu (775mV rms)
Dimensions: Width: 483mm (19”) Height: 177mm (4U) Depth: 95mm
Weight: 5kg
Cut-out required: Width: 440mm Height: 165mm