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APPENDIX 2 - INTERNAL JUMPER SETTINGS

Mono Input CHANNELS

The Mono Input channels are provided with three selectable options, using push-on jumpers on the circuit board.

To change the settings, simply pull off the jumper and replace on the adjacent pair of pins. The default settings are shown
as shaded on the diagram below.

Auxiliary Pre Source

Default is POST-EQ, optionally Pre-EQ

Direct Output Source

Default is POST-FADE, optionally Pre-fade

Direct Output Pre Source

Default is POST-EQ, optionally pre-EQ

The diagram below shows the location of the jumpers on the circuit board, and with care can be changed without

removing the circuit board from the mixer.

MONO INPUT PCB SC3638

AUX
PRE

SOURCE

DEFAULT POSITION SHOWN AS SHADED

DIRECT

SOURCE

DIRECT

PRE

SOURCE

SW4

R41

R57

APREQ

APSEQ

DPREQ

DPSEQ

DPRE

DPST

R99

R100

R33

L14

L15

IC1

D15

Summary of Contents for SPIRIT 8

Page 1: ......

Page 2: ...edicated stereo inputs Each stereo input comprises two separate input sections one provided with comparable facilities to the mono inputs and one more basic input for a cassette or CD player which rou...

Page 3: ...ive feature of the mixer They have a similar effect on the frequency response of the input channel as the tone controls on a hi fi system but with much greater precision and allow particular character...

Page 4: ...on caused by Clipping when the signal becomes so high that it would exceed the power supply rail voltages and is as a result limited This commonly occurs where gain settings are incorrectly set or whe...

Page 5: ...to avoid invalidation of the warranty please read this section carefully The SPIRIT 8 mixer must only be connected through the Power Supply supplied The wires in the mains lead are coloured in accorda...

Page 6: ...Page 5 CONNECTING IT UP MONO STEREO GROUP MASTER...

Page 7: ...e 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 s...

Page 8: ...sert 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 mix fader The mix signal appears on the TIP of the plug and is returne...

Page 9: ...ity of a selected input if a phasing problem is suspected Grounding and Shielding For optimum performance use balanced connections where possible and ensure that all signals are referenced to a solid...

Page 10: ...asic Troubleshooting is a process of applying logical thought to the signal path through the console and tracking down the problem by elimination l Swap input connections to check that the source is r...

Page 11: ...signal from the channel appears on the TIP of the plug and is returned on the RING The insert point allows limiters compressors and other signal processing units to be added as required to particular...

Page 12: ...lisation section when released Alternately pressing and releasing the switch provides an easy way of comparing the equalised and unequalised signals 7 AUXILIARY SENDS These controls route the input ch...

Page 13: ...if required 11 MUTING All outputs from the channel except Inserts may be muted by pressing the MUTE switch and the associated LED illuminates to show that the channel is OFF Alternatively the channel...

Page 14: ...L R meters where it replaces the normal Mix L R signal The PFL AFL ON LED on the master section illuminates to warn that the headphones and the meters are now responding to the PFL AFL selection and t...

Page 15: ...the MUTE switch is pressed 21 BALANCE The BALANCE control sets the amount of the channel signal feeding the Left and Right Mix outputs allowing you to balance the source in the stereo image When the c...

Page 16: ...clockwise when not required If required the Matrix outputs may be used to create an additional stereo output from the console and in this case the Groups may be fed as stereo pairs for instance with G...

Page 17: ...mal Mix L R signal The PFL AFL ON LED on the master section illuminates to warn that the headphones and the meters are now responding to the PFL AFL selection and the PFL LED on the input channel ligh...

Page 18: ...hen the MUTE is active 41 PHONES JACK The PHONES output appears on a 3 pole 1 4 jack suitable for headphones with an impedance of 200W or higher METERBRIDGE A full width Meterbridge provides continuou...

Page 19: ...t out unwanted surrounding sounds allow a lower gain setting on the mixer and avoid feedback Also a well chosen and well placed microphone should not need any appre ciable equalisation There are no ex...

Page 20: ...g the mix and this should be done progressively listening carefully for each component in the mix and watching the meters for any hint of overload If this occurs back off the appropriate Channel Fader...

Page 21: ...ec ondary system fed from the Matrix outputs The illustration shows the flexibility of the inputs to the mixer and how the direct outputs are available as sources for a multitrack tape machine The Aux...

Page 22: ...r the Matrix could be the main Mix or a combination of Mix and Groups The first three Aux sends are used as mono feeds to Effects Units brought back to the Mix on the Stereo Returns Group outputs or D...

Page 23: ...the number of Stereo Inputs to the Mix may be expanded by using the Stereo Returns for sources such as keyboards and drum machines when the normal Stereo input channels are already used Additional sta...

Page 24: ...in requirement is to drive a large number of separate loudspeaker outputs for spot sound effects The Groups Mix Aux Sends and Matrix outputs are all used for this purpose Each could be provided with G...

Page 25: ...sources to be set up in advance including fader positions and muted until required Releasing the respective Master Mute button activates the whole group Pressing the button mutes the selected channel...

Page 26: ...to control a larger number of input channels or to accommodate a separate mixer being used as a submixer Note that the PFL AFL monitoring and Mute buses remain separate MONO STEREO GROUP MASTER MONO...

Page 27: ...cked up equally by the two wires but out of phase resulting in cancellation of the interference signal clipping the onset of severe distortion in the signal path usually caused by the peak signal volt...

Page 28: ...n cancellation polarity a term used to describe the orientation of the positive and negative poles of an audio connection Normally connections are made with positive to positive negative to negative a...

Page 29: ...on to Mix 1 ch routed 101 dB 89 dB Typical Aux Attenuation 88 dB 83 dB Pan Isolation 36ch to Mix L to R 76 dB 68 dB R to L 81 dB 83 dB Adjacent Channel Crosstalk 99 dB 95 dB Routing Isolation 86 dB 86...

Page 30: ...86 1347 53 03 1581 62 24 DIMENSIONS FLIGHT CASE MOUNTING The console is ideal for flight case mounting with all connectors on the top panel The end cheeks may be removed to save space in the flight ca...

Page 31: ...Page 30 APPENDIX 1 TYPICAL CONNECTING LEADS Balanced Unbalanced Insert Leads...

Page 32: ...Page 31 Y Leads Unbalanced Y Leads Balanced Headphone Splitter Headphone Separator...

Page 33: ...m below Auxiliary Pre Source Default is POST EQ optionally Pre EQ Direct Output Source Default is POST FADE optionally Pre fade Direct Output Pre Source Default is POST EQ optionally pre EQ The diagra...

Page 34: ...5 6 7 8 9 10 11 12 13 14 15 20 25 30 35 40 4 3 8 6 12 8 17 0 21 0 25 0 28 7 32 3 35 7 39 0 42 0 45 0 47 6 50 0 52 4 61 4 67 0 70 4 72 4 73 6 8 6 17 4 26 4 35 8 45 6 56 0 67 2 79 3 92 4 107 0 123 0 140...

Page 35: ...ONO CHECK MIX LEFT INSERT INSERT MIX RIGHT MIX LEFT MATRIX A OUT GROUP OUT MATRIX B OUT MATRIX A BUS MATRIX B BUS FADER MATRIX A MATRIX A CONTROL ROOM MATRIX B A A B B FADER AUX1 AUX 2 3 5 6 SIMILAR A...

Page 36: ......

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