SOUNDusing Powered Mixer/Amplifier

Soundcraft GIGRAC ST-1000

Presented by Tim Eum28 June 2007

At 56th US National SRD ConventionCharlotte, North Carolina

WHY get acommercial mixer/amplifier?

• Turntable not needed• Hilton MA-150 ---------

---------- cost = $895• Hilton MA-500 ---------

---------- cost = $1280• Mono output only• Only 4 inputs• Limited tone control• No effects

• Turntable can be added• GIGRAC 600 -------------

------------ cost = $399• GIGRAC 1000ST --------

------------ cost = $499• Stereo output possible• 8 inputs (4 stereo)• Fuller tone control• Effects possible

WHAT’s a Mixer/Amplifier?Sound Sources

Mix Sources

Amplify Sound

Provide Power

Speaker Output

Stereo vs. Mono• Traditional square/round dance equipment only used mono outputs

and primarily mono inputs (microphone). Later sets could mix stereoinputs into a mono output. They could also record mono music onone track and mono voice onto another track of a stereo recording.

• Laptops, CD Devices, MiniDisc Devices, and other sources of musicnot only play stereo output but can also make stereo recordings.

• It is common in round dancing to record music on the left trackand voice cues on the right track of a stereo recording.

• Some music recorded in stereo will sound distorted if you play onlyone side of it.

• Stereo output (i.e. left side to left speaker and right side to rightspeaker) is not generally used in square/round dancing whereuniform sound is desired in the whole hall. Stereo output is used bybands to hear one instrument on one side, another on the other sideand perhaps the singer just to one side of center.

• Mono output can mix left & right into the main speaker(s) and alsointo the monitor speaker(s).

Hilton MA-150

7 lbs

Types ofPowered Mixer/Amplifiers

FLAT SLANTED VERTICAL

CONSOLE CASED

Examples ofPowered Mixer/Amplifiers

Yorkville M1610

$880

29 lbsSoundcraftGIGRAC 1000ST

$500

26 lbs

PhonicPowerpod 408

$140

16 lbs

Market SurveyPowered Mixer/Amplifiers

Cost Name Face Angle Channels Power Stereo$880 Yorkville M1610 Slanted 10 1600 Yes$800 Mackie 808S Vertical 8 1200 Yes$730 Yorkville M810 Slanted 10 800 Yes$570 Yamaha EMX512SC Slanted 12 1000 Yes$500 Soundcraft GIGRAC1000 Vertical 8 1000 Yes$450 Sampson XM910 Slanted 8 900 Yes$400 Sampson XM610 Slanted 6 600 Yes$360 Phonic Powerpod 865 Slanted 8 600 Yes$350 ALESIS Gigamix 6FX Vertical 6 600 No$250 Nady SPM-6300 Vertical 6 300 Yes$230 Nady SPM-4250 Vertical 4 250 Yes$140 Phonic Powerpod 408 Vertical 4 120 No

Mixer/Amplifier Overview

How to use a Mixer/Amplifier1. Set all volume controls off/low.2. Plug in power cord.3. Plug in speaker(s).4. Plug in microphone(s).5. Plug in laptop (or other sound source).6. Turn main volume control up half way.7. Turn up volume for other devices.8. Adjust for feedback if necessary.

GIGRAC 1000STRIGHT SIDE10 – Main volume11 – Monitor volume12 – Phantom power13 – Graphic equalizers14 – Power On light15 – Amp clipping lights16 – Amp configuration17 – L & R signal meters18 – Record Outputs19 – Playback Inputs20 – Mute All In but 1921 – Headphones out22 – Main Output23 – Monitor Output24 – FX (effects) Output25 – Submix Input26 – FX Bypass (opt.)27 – FX (effects) on28 – FX to Main control29 – FX to Mon control

INPUT Channel ControlsThe GigRac 1000st has a total of 8 inputchannels. Channels 1-4 are designed tohandle mono microphone or mono linelevel signals only. Channels 5-8 can alsohandle stereo line level signals.

1. Input Connector (XLR or ¼” Jack)2. PAD switch (reduces input 20dB)3. MAIN volume control4. Monitor volume control5. PAN/Balance control6. FX effects control7. Bass control (± 15dB @ 80 Hz)8. Mid control (± 15dB @ 600 Hz)9. Treble control (± 15dB @ 1200 Hz)

Backside of GIGRAC 1000ST

1. This is THE power ON/OFF switch.2. This is where you connect the POWER cable.3. This is where the SPEAKERS are connected. You can use either

Neutrik Speakon connectors or standard ¼” Jack connectors.

Connecting SpeakersSet output

configurationfor left and

rightchannels to

be combinedinto amp 1

and monitorchannel on

amp 2.

You couldinstead setleft channelto amp1 andright channel

to amp 2.

The GIGRAC1000ST has

combination inputsockets that take

either an XLR or ajack plug.