Spirit FOLIO SX mixer manual Wiring UP, MIC Input, Line Input, Insert Point

Balanced Mic

XLR

2. Hot(+ve)

3. Cold(-ve)

1. Screen

WIRING UP

Please refer to pages 27/28 for additional wiring details.

MIC INPUT

The mic input accepts XLR-type connectors and is designed to suit a wide range of BALANCED or UNBALANCED low-level signals, whether from delicate vocals requiring the best low-noise performance or close-miked drum kits needing maximum headroom. Professional dynamic, condenser or ribbon mics are best because these will be LOW IMPEDANCE. While you can use low-cost HIGH IMPEDANCE mics, you do not get the same degree of immunity to interference on the microphone cable and as a result the level of background noise may be higher. If you turn the PHAN- TOM POWER on, the socket provides a suitable powering voltage for professional condenser mics.

Unbalanced Mic

XLR

2. Hot(+ve)

Link	3
to	1	1. Screen

Balanced		Unbalanced
3 pole Jack		3 pole Jack
Hot	(+ve)	Signal
Cold	(-ve)	Gnd/Screen
Gnd/Screen		Gnd/Screen

Tip

Ring Sleeve

Inserts

Signal Send

Signal Return

Gnd/Screen

Tip

Ring Sleeve

DO NOT use UNBALANCED sources with the phantom power switched on. The voltage on pins 2 & 3 of the XLR connector may cause serious damage.

BALANCED dynamic mics may normally be used with phantom power switched on (contact your microphone manufacturer for guidance).

The input level is set using the input SENS knob.

The LINE input offers the same gain range as the MIC input, but at a higher input impedance. This is suitable for most line level sources, and provides the gain needed for lower level keyboards and high impedance microphones.

WARNING - Start with the input SENS knob turned fully anticlockwise when

plugging high level sources into the LINE input to avoid overloading the

input channel or giving you a very loud surprise!

LINE INPUT

Accepts 3-pole `A’ gauge jacks, or 2-pole mono jacks which will automatically ground the ‘cold’ input. Use this input for sources other than mics, such as keyboards, drum machines, synths, tape machines or guitars. The input is BALANCED for low noise and immunity from interference, but you can use UNBALANCED sources by wiring up the jacks as shown, although you should then keep cable lengths as short as possible to minimise interference pick-up on the cable. Note that the ring must be grounded if the source is unbalanced. Set the input level using the SENS knob, starting with the knob turned fully anticlockwise. Unplug any MIC connection when using the LINE input.

INSERT POINT

The unbalanced, pre-EQ insert point is a break in the channel signal path, allowing limiters, compressors, special EQ or other signal processing units to be added in the signal path. The Insert is a 3-pole ‘A’ gauge jack socket which is normally bypassed. When a jack is inserted, the signal path is broken, just before the EQ section.

The signal from the channel appears on the TIP of the plug and is returned on the RING, with the sleeve as a common ground.

The Send may be tapped off as an alternative pre-fade, pre-EQ direct output if required, using a lead with tip and ring shorted together so that the signal path is not interrupted.

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