172.546 - Mixer Skytec - Free user manual and instructions

Product type	Mixing console
Brand	Skytec
Model	172.546
Power supply	220 Vac / 50 Hz
Input channels	Mono and stereo
Microphone inputs	Balanced with phantom power 48V (switchable)
Line inputs	Unbalanced on 6.3 mm jack
Mono equalizer	3-band (High, Mid, Low) with ±15 dB adjustment
Stereo equalizer	4-band (High, Hi Mid, Lo Mid, Low) with ±15 dB adjustment
High-pass filter	Low Cut at 75 Hz (-3 dB) on mono channels
AUX buses	2 buses (AUX1 pre-fader, AUX2 post-fader)
Routing	Stereo (L/R) or group 1-2
Main outputs	Balanced on XLR and 6.3 mm jack (L/R)
Headphone output	6.3 mm jack with adjustable volume
Control room output	6.3 mm jack for monitor
Indicators	PEAK LED per channel, output VU meter
Signal-to-noise ratio	112 dB
Max output level	+22 dBu (balanced)
Bandwidth (mono)	10 Hz - 60 kHz (±3 dB)
Bandwidth (stereo)	10 Hz - 55 kHz (±3 dB)
Cleaning	Dust with a soft cloth. Do not use sprays.
Safety	Do not open the casing. Connect to earthed outlet. Disconnect before storm.
Repairability	Any repair must be carried out by a specialist.

Frequently Asked Questions - 172.546 Skytec

How to connect a microphone to the mixing console?

Use a balanced microphone input (XLR connector) on a mono channel. Make sure the 48V phantom power is off before connecting the microphone, except for condenser microphones.

When to use 48V phantom power?

48V phantom power is necessary for condenser microphones. Activate it via the switch (35) only when using this type of microphone. Do not activate it with dynamic microphones or unbalanced devices.

What does the red PEAK LED on a channel mean?

The PEAK LED lights up when the signal reaches a level close to clipping. If it stays lit continuously, reduce the channel volume or the TRIM gain to avoid damaging the speakers.

How to use the PFL button?

The PFL (Pre-Fader Listen) button allows you to pre-listen to a specific channel's signal in the headphones, independent of the fader setting. Press PFL to isolate that channel in the headphones.

How to connect an effects device (reverb, delay)?

Connect the effects device to an AUX Send output (AUX1 or AUX2) and its return to an AUX Return input (29). Use the AUX Send level controls on each channel to adjust the effect amount.

What is the difference between AUX1 and AUX2?

AUX1 is pre-fader (independent of channel volume), ideal for a monitor mix. AUX2 is post-fader (dependent on channel volume), used for effects.

How to adjust the equalizer without damaging the speakers?

Always start by setting the EQ knobs to the 0 (flat) position. Adjust gradually while listening, without exceeding limits to avoid clipping.

What to do if the mixing console does not power on?

Check that the power cord is properly connected to an earthed 230V/50Hz outlet. Ensure the main switch (47) is pressed. If the problem persists, consult a specialist.

Can unbalanced cables be used on balanced inputs?

Yes, you can use unbalanced cables on balanced inputs, but this may reduce noise rejection. For best quality, use balanced cables.

How to clean the potentiometers and faders?

Never use cleaning sprays. Dust with a soft, dry cloth. In case of crackling, contact a specialist.

USER MANUAL 172.546 Skytec

Congratulations on the purchase of this SkyTec mixer. Please read this manual carefully prior to using the unit.

Warning:

• Read the manual prior to using the unit.
• Keep the manual for future reference.
• Keep the packaging for safer transport in its original packaging
• For indoor use only.
• Prior to the first use, have the unit checked by a qualified person.
• The unit contains voltage carrying parts. DO NOT open the mixer.
• When you unplug the unit from the mains always pull the plug, never the lead.
• Never plug or unplug the unit with wet hands.
  If the plug and/or mains lead are damaged, they need to be repaired by a qualified technician.
• If the unit is damaged to an extent that you can see internal parts, do not plug the unit into a mains outlet.
• Repairs and lamp replacement has to be carried out by a qualified technician.
• Only connect this unit to an earthed mains outlet of 230Vac / 50Hz and 10-16A.
• Do no place the unit near heat sources.
• Always unplug the unit during a thunderstorm or when it is not in use.
• If the unit has not been used for a longer period of time, condensation can occur inside the housing. Please let the unit reach room temperature prior to use.
• Keep out of the reach of children.
• All channel controls and the master volume control must be set to zero prior to switching the unit on.
• Set the channel slider controls slowly. Fast variation can overload the speakers.
• To prevent clipping of the amplifier do not set the volume level too high.

• Switch the amplifier on at latest and switch it off at first.

• Do not use cleaning sprays for the slider controls. The residues of these spray cause dust deposits in the controls. If a problem occurs, please consult a specialist.

MONO INPUT CHANNELS

1. BALANCED INPUT

Electronically balanced input for standard XLR connectors. Features a 48V phantom power (to be switched on via (35))

2. LINE INPUT

This unbalanced input accepts balanced and unbalanced microphones, turntables, keyboard, etc.

3. LOW CUT

This push button improves the use of the microphone. When the low cut function is activated you have fewer problems with noise, interference and pop noises.

4. TRIM

This function allows you to set the input sensitivity of each channel to the constant level of the input signal.

5. HIGH

Sets the high frequencies on each channel. Leave this knob in the "0" position first. Set the signal once the music has started to play in order not to damage the speakers. Turn cw to increase the higher frequencies and ccw to reduce them.

6. FREQUENCY & MID

This equalization function has a "bell" reaction with a fixed Q fader of 1.5. The frequency can be set between 100 & 8000 Hz and the volume between -15 & +15 dB.

7. LOW

This knob sets the low frequency range of each channel. Leave this knob in the "0" position first. Set the signal once the music has started to play in order not to damage the speakers. Turn cw to increase the lower frequencies and ccw to reduce them

8.AUX1

This AUX send control is pre-fade, post-EQ. Therefore the signal is not controlled by the position of the fader and the routing status of the channel. This send function is very convenient to cross monitor signals that have to be controlled separately from the PA installation.

9. AUX 2

This AUX send control is post-fade, post-EQ. Therefore the signal is sensitive to changes in the fader position. It is normally used to feed an audio signal to an effect unit. As the signals are always sent back into the mixer, the fader must be able to control these signals.

10.PAN

The PAN control feeds continuously variable quantities of the post-fader signal to the left or right and G1 or G2 main busses. In the centre position /" the same signal is sent to the left and right and the G1 and G2 main busses.

11. PEAK

A red LED lights up when the peak signal reaches the maximum value that the mixer can handle. If this lasts over a longer period of time, you might damage the unit. The LED lights up at a volume level of 5 dB below clipping.

12. PFL

If this button is pressed, you can monitor the signal via headphones. This applies only to channels where the PFL function is switched on. All other channel can then not be monitored through the headphones

13. STEREO

When this button is pressed, you can use the L-R master faders to allocate a stereo position to the signal of this channel over the output signal.

14. GRPS 1-2

When this button is pressed, you can use the G1-2 master fader. Now, the signal is bundled with all other channels on which this function is activated. The L-R master faders are inactive now.

15.CHANNEL FADER

This slider control sets the volume of that channel. Set it to the "0" position when you connect a signal. Push the slider control upwards until the required output volume is reached. Please note, you can further change the volume of this channel via one of the master faders.

STEREO INPUT CHANNELS

16. LEFT (MONO) / RIGHT

6.3 mm jack input for connection of a Line signal. If L+R are both connected, this channel is stereo. If only the left input is connected, a mono signal is fed to the left and the right bus (the signal is simply spread over the left and the right bus). If you connect only the right input, the signal is fed only to the right bus.

17. HIGH

This knob controls the high frequencies per channel. Set this button always in the "0" position first. Control the signal once the music has started playing in order to prevent damage to the speakers. Turn cw to increase the high frequencies and ccw to reduce them.

18. HI MID & LO MID

This knob controls the medium range frequencies per channel. Set this button always in the "0" position first. Control the signal once the music has started playing in order to prevent damage to the speakers. Turn cw to increase the medium frequencies and ccw to reduce them.

19. LOW

This knob controls the low frequencies per channel. Set this button always in the "0" position first. Control the signal once the music has started playing in order to prevent damage to the speakers. Turn cw to increase the low frequencies and ccw to reduce them.

20.AUX1

This AUX send control is pre-fade, post-EQ. Therefore the signal is not influenced by the position of the fader and the routing status of the channel. This send function is very convenient to cross monitor signals that have to be controlled separately from the PA installation.

21.AUX 2

This AUX send control is post-fade, post-EQ. Therefore the signal is sensitive to changes in the fader position. It is normally used to feed an audio signal to an effect unit. As the signals are always send back into the mixer, the fader must be able to control these signals.

22. BAL

The BAL control feeds continuously variable quantities of the post-fader signal to the left or right and G1 or G2 main busses. In the centre position "∞" the same signal is sent to the left and right and the G1 and G2 main busses.

23.PFL

If this button is pressed, you can monitor the signal via headphones. This applies only to channels where the PFL function is switched on. All other channel can then not be listened to through the headphones

24. STEREO

When this button is pressed, you can use the L-R master faders to allocate a stereo position to the signal of this channel over the output signal. The L-R master faders are inactive in that case.

25. GRPS 1-2

When this button is pressed, you can use the G1-2 master fader. Now, the signal is bundled with all other channels on which this function is activated. The L-R master faders are inactive now.

26. CHANNEL FADER

This slider control sets the volume of that channel. Set it to the "0" position when you connect a signal. Push the slider control upwards until the required output volume is reached. Please note: you can further change the volume of this channel via one of the master faders.

MASTER SECTION

27. TAPE LEVEL

This knob changes the volume level of the TAPE IN if this input is connected. Turn cw to increase the level and ccw to reduce it

28. AUX 1-2 SENDS

This knob changes the volume level of the AUX Send if this output is connected. Turn cw to increase the level and ccw to reduce it

29. AUX RETURN 1-2

This knob changes the volume level of the AUX Return input signal. Turn cw to increase the level and ccw to reduce it

30. ST/G1-2

If this switch is not pressed, the return signal will be sent to the stereo output. If the switch is pressed in, the return signal will be sent to the G1-2 output.

31. ST/G1-2

If this switch is pressed, the G1-2 mix output signal is sent to the stereo bus. Thus the G1-2 busses can mix two mono subgroups into a single output signal when no stereo sound is required.

32. GRPS 1-2 OUTPUT FADER

This slider control sets the volume level of the G1-2 bus.

33. OUTPUT LEVEL INDICATOR (VUMETER)

This VU-meter displays the output levels of the lift and right channels, GPRS1-2, headphones and control room so that you can monitor the output condition of the signal.

34. ON/OFF & PHANTOM LEDs

The LEDs light up when their functions are switched on.

35. PHANTOM POWER SWITCH

If you press this button all balanced microphone inputs are powered by 48V which allows the use of condenser microphones.

36. HEADPHONE / CONTROL ROOM LEVEL

This single volume control sets the volume level of the headphones and of the monitors. Turn cw to increase the volume and ccw to lower it.

37. HEADPHONE SWITCH

If the L-R / G1-2 PFL button is not pressed in, the output signal is sent in stereo to the monitors. If the buttons are pressed in, the signal is sent via the headphones. The G1-2 fader allows you to determine the volume level of the headphones.

It's the master fader control of the volume level of a stereo signal. Left and right are controlled separately.

1. STEREO AUX RETURNS & SENDS

To be connected to all kinds of effect units

1. TAPE INPUT JACK

Connect this jack to a cassette deck for playback

1. RECORD PIN JACK

This jack has to be connected to a cassette deck for recording of the output signal.

1. GRPS 1-2 OUTPUT JACK

Connect this jack to an amplifier to reproduce the G1-2 signal.

1. STEREO OUTPUT JACK (LEFT/RIGHT)

This allows you to connect the output signal to an amplifier via 6.3mm jacks or XLR connectors

1. CONTROL ROOM OUTPUT JACK

For connection to a monitor (active speaker or amplifier)

1. HEADPHONE JACK

To be connected to headphones in order to monitor on each channel the PFL or the L/R and the G1-2.

REAR PANEL

46. POWER JACK

Mains power inlet.

47. MAINS SWITCH

Press this button to switch the mixer ON or OFF. The LED (29) lights up when this switch is in ON position.

48. INSERT

To feed the input signals into effect units, electrical instruments, etc.

INSTALLATION

Do not mix up the cable in order to avoid wrong connections. Connect the leads one by one and not all leads on one side first and then all on the other side. In the worst case, you might permanently damage the unit. Figure 2 shows an example of possible connections.

Prior to connecting the mixer, set all controls to "0". You can connect microphone or line units to the mono channels, all kinds of line units to the stereo channels and effect units to the AUX Return. You can also connect Midi instruments to the AUX Return.

If you connect a microphone, make sure that the phantom power is switched OFF. DO NOT use unbalanced units when the phantom power is switched on. Do not short-circuit the 48V circuit of the phantom power to the ground. You might heavily damage the unit.

CONNECTIONS

On a balanced in/output, always use balanced equipment. You can use either balanced or unbalanced equipment on an unbalanced in/output. See the drawings below for the equipment that you can use:

If possible, connect the balanced outputs to other balanced units to avoid interference.

SPECIFICATIONS

Mono inputs

Mic input: electronically balanced, discrete input configuration

Frequency response: 10 Hz - 20 kHz (±3 dB)

Distortion: <0,01% @ +4 dBu (± 1 kHz)

Input impedance: 150 Ohm @ -129.5 dB

TRIM range: +10 dB - +60 dB

Line input: electronically balanced

Frequency response: 10 Hz - 20 kHz (± 3 dB)

Distortion: <0,01% @ +4 dBu (± 1 kHz)

Line level range: +10 dBu -40 dBu

Equalizer.

High: 12 kHz (±-15 dB)

Mid: 100 Hz - 8 kHz (± -15 dB)

Low: 80 Hz (±-15 dB)

Stereo inputs

Line input: unbalanced

Frequency response: 10 Hz - 20 kHz (±3 dB)

Distortion: <0,01% @ +4 dBu (± 1 kHz)

Equalizer.

High: 12 kHz (±-15 dB)

Mid bell: 100 Hz - 8 kHz (± -15 dB)

Low: 80 Hz (±-15 dB)

Low cut (high pass) filter: 75 Hz @ -3 dB

Master section

Max output level: +22 dBu, balanced

AUX send max output level: +22 dBu unbalanced

Control room output level: +22 dBu unbalanced

Signal/Noise ratio: >112 dB

Power supply: 230 Vac, 50 Hz

• Specifications and design subject to changes without prior notice.

Do not attempt to make any repairs yourself. This would invalid your warranty.

Do not make any changes to the unit. This would also invalid your warranty.

The warranty is not applicable in case of accidents or damages caused by inappropriate use or disrespect of the warnings contained in this manual.

SkyTronic UK cannot be held responsible for personal injuries caused by a disrespect of the safety recommendations and warnings. This is also applicable to all damages in whatever form.

Low cut (high pass) filter: 75 Hz @ -3 dB

Master sectie

Distorsion: 0,01% @ +4 dBu (± 1 kHz)

Impedance d'entree: 150 Ohms @ -129,5 dB

Distorsion: 0,01% @ +4 dBu (± 1 kHz)

Distorsion: 0,01% @ +4 dBu (± 1 kHz)

Equalizer.

High: 12 kHz (±-15 dB)

Mi belld: 100 Hz -8 kHz (± -15 dB)

Low: 80 Hz (±-15 dB)

1. GRPS 1-2 AUSGANGSBUCHSE