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EQ equalizer
To weaken or amplify the respective frequency range.
(5) HI frequency adjuster
Makes the setting of ± 15 dB with a frequency of 12 KHz possible.
(6) MID gain adjuster
Makes the adjustment of ± 15 dB possible, with the frequency adjusted by the MID frequency adjuster (7).
(7) MID frequency adjuster
Semi-parametrical frequency adjuster at the range of 100Hz to 8 KHz and a frequency range of one octave.
(8) LOW frequency adjuster
Makes the adjustment of ± 15 dB at a frequency of 80 Hz possible.
(9) AUX level adjuster
Makes the adjustment of AUX level and AUX sum possible (auxiliary path e.g., such as monitor path).
(10) AUX signal switch
With this switch you can select whether the AUX signal is looped out before or after (pre or post) the chan-
nel fader.
(11) Level adjuster of effect processor
To adjust the effect level on the bus of the digital signal processor.
(12) PAN adjuster
With this adjuster (panorama, balance) the position of the mono signal can be split between the left and the
right stereo MAIN channel.
(13) PFL- (pre fader listening) switch
Switches PFL to this channel. This switch makes pre fader listening of signals possible before the channel
fader. This function is displayed by the PEAK LED.
(14) MUTE switch
Not pressed –
channel is on MAIN MIX bus.
Pressed
–
channel is on ALT3-4 bus. (yellow LED lights up).
(15) Channel fader
To adjust the volume portion of the individual channels. Set all channels which are not used to minimum.
(16) TAPE-in-jacks
(17) TAPE-out-jacks
A recorder for recording and playback can be connected to these chinch jacks.
(18) LINE-IN jacks for channel 7/8
(19) LINE-IN jacks for channel 9/10
(22) LINE-IN jacks for channel 11/12
(23) LINE-IN jacks for channel 13/14
Unsymmetrical (unbalanced) 6.3 jack sockets to connect a line-signal source.
(20) CTRL-ROOM-OUT jacks
Line outputs L/R for secondary signal processing and/or further power amplifiers for the acoustic irradiation
of the control room. The volume of this output is determined via the headphone volume control (21) of the
channel unit and the MAIN MIX fader.
(21) MAIN-OUT jacks
Line outputs L/R for secondary signal processing and/or further power amplifiers.
EQ equalizer
To weaken or amplify the respective frequency range.
(24) HI-MID adjuster
Makes the adjustment of ± 15 dB at a frequency of 3 KHz possible.
(25) LO-MID adjuster
Makes the adjustment of ± 15 dB at a frequency of 500 Hz possible.
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LEFT- / RIGHT OUTPUT jacks SPEAKON ®
+ 1 speaker + (HOT)
- 1 speaker – (COLD)
Connection
Before connecting the power mixer to the signal sources, make sure that the power cord is not
plugged in and that the unit is not switched on. Also switch off all other units which are to be
connected to the power mixer.
Make sure that the voltage selector (16) is set to the standard mains voltage in your
country and that the value of the inserted fuse is in correspondence with the mains volt-
age (see chapter Changing of Fuse).
Connect the speaker cable to the speaker clamps (12)/(13) or with jacks (14)/(15), with the Speakon ® plugs.
Connect your signal sources with the power mixer.
Connect the power cord and insert the power cord into a earthing contact socket which is insulated in
accordance with the rules.
When connecting the music system and putting it into operation you should also observe the regulations
and safety instructions of the manufacturers of other system components.
Cables are the most important connecting links in the system, this is why high-quality and crush-proof
cables with high-quality plugs should be used. Do not lay the input/output cables of the mixing desk direct-
ly next to mains power lines, if necessary cross these cables at a right angle to keep the risk of interference
as low as possible.
Operation
• Check the connections again, if they are correct.
• Turn all volume relevant adjusters to "0".
• Slide all faders to "0".
• Switch on the signal sources with independent power supply.
• Switch on the POWER switch (9) for the mixing desk. The power LED (29) lights up.
• Switch on the power switch (18) for the power amplifier.
• First of all adjust the input level GAIN (4), then the output level via the faders.
To adjust it, press the PRE fader listening switch (13) of the channel to be adjusted, to be able to read the
LED display of the signal level. Adjust the gain adjuster such, that in the case of a signal peak the first yel-
low LED (+2dB) of the modulation indicator just about lights up. Repeat this adjustment with all assigned
channels.
• Make sure that no unit of the system is in overdrive and that the connected speakers are not overloaded.
Under no circumstances must playback be distorted.
If distorted music signals can be heard, although the volume was not set too high and the mixing
desk was set correctly, the mixing desk will need to be switched off straight away and the connec-
tion needs to be checked. If there is no mistake on the connection, please contact an expert.
• Now carry out all other settings and adjustments on the mixing desk.
• To switch off the mixing desk, first of all turn the volume of the headphones and of the fader back to min-
imum.
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