Question about Soundcraft GigRac 1000ST 8-Channel 1000-Watt Portable Powered Live Sound Mixer

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Soundcraft Gigrac Powered Mixer won't turn on

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Posted on Jan 02, 2017

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SOURCE: Please help. Cannot turn the

Check the fuse. If it has blown, do NOT replace it without taking for service first. Additional damage often occurs when users replace fuses that have blown due to internal failures in equipment.

Also check that the power cord is fully seated... sometimes they don't quite make it...

Posted on Feb 05, 2011

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SOURCE: Soundcraft GIGRAC 600 pre-amp power

The resistor is acting as a fuse and will continue to blow until you fix the REAL problem. LIKELY the filter capacitor(s) beyond the bridge rectifier are failing. One needs to use test equipment to measure the current through the resistor and see if it is reasonable. The capacitors can heal briefly and then start to short. One should also check the rectifier in operation with an oscilloscope as one diode could intermittently short.

Posted on May 04, 2011

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SOURCE: Soundcraft Gigrac 1000st distortion in

You should be using Dynamic mics such as a Shure SM58. They go into the first FOUR channels and if there is excessive gain and distortion, push in thee Pad button below the connector for those four channels. Inexpensive consumer microphones used with some Karaoke home systems are not suitable for this unit. You should be using XLR cables on the mics (balanced lines). The Pad buttons reduce the gain by a fixed amount of -20 Db for mics that have too much output to be controlled by the gain controls right above the connector. Ideally those should be no less than 12 o'cloock for good signala to noise ratio. Additional channels beyond the first four do not have as much gain and they do not have the -20 Db pad option.

Posted on May 15, 2011

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1 Answer

Why does my gigrac power down after a few seconds?


Your unit is telling you that there is something wrong. This can be in two places, your power supply is shutting down (thermal) because of a component fault, and or your Amp(s) are overheating due to also a component fault. My guess, for what it's worth, is one of the amps has a bad final so I would disconnect the power supply from the amps and see if the unit keeps running. If it does than re-connect one amp at the time and see what happens. This should get you a fair way in to finding the fault. Have fun.

Aug 14, 2014 | Soundcraft Gigrac 600 Powered Mixer

1 Answer

Can I connect a Soundcraft Efx12 to a speaker without using an amplifier?


Yes, but it could be pointless.
Headphones are just small speakers so it is usually possible to drive a small pair of "computer/iPod" type speakers from the headphone output.
True balanced outputs should have a fair amount of drive so try connecting a speaker between pins 2 and 3. The higher the impedance of the speakers the better.
Ultimately, the results will be very quiet and the cost of a small amp or powered speakers for low level use is quite reasonable.

Apr 24, 2014 | Soundcraft Efx12 Mixer 12 Channel Mixer...

1 Answer

Gigrac 600 turns off, displays the Amp 2 clip light then turns off. All volume knobs are turned down. All external items are disconnected and it still turns off. My only complaint about these units is...


There is a bad amp in that divice that is causing an overload. The device then shuts down. This is not something that you can fix yourself. IT requires special diagnostic tools and troubleshooting as well as soldering ability.

Aug 17, 2013 | Soundcraft Gigrac 600 Powered Mixer

1 Answer

Why is there no output from one of the speaker jacks?


You seem to have answered your own question but it is possible that the speaker jack is defective

Jan 22, 2013 | Soundcraft Gigrac 600 Powered Mixer

1 Answer

Soundcraft Gigrac 1000st distortion in the mic inputs. The rca line in is fine and clean. No effects on the mic pre sounds like its breaking up at any volume level. really dissapointing.


You should be using Dynamic mics such as a Shure SM58. They go into the first FOUR channels and if there is excessive gain and distortion, push in thee Pad button below the connector for those four channels. Inexpensive consumer microphones used with some Karaoke home systems are not suitable for this unit. You should be using XLR cables on the mics (balanced lines). The Pad buttons reduce the gain by a fixed amount of -20 Db for mics that have too much output to be controlled by the gain controls right above the connector. Ideally those should be no less than 12 o'cloock for good signala to noise ratio. Additional channels beyond the first four do not have as much gain and they do not have the -20 Db pad option.

May 15, 2011 | Soundcraft GigRac 1000st Powered Mixer...

1 Answer

Soundcraft GIGRAC 600 pre-amp power supply keep blowing the low valve resistor 1ohm. they are the resistor just before the bridge rectifier, for the low voltage feed. Once resistors replaced the unit...


The resistor is acting as a fuse and will continue to blow until you fix the REAL problem. LIKELY the filter capacitor(s) beyond the bridge rectifier are failing. One needs to use test equipment to measure the current through the resistor and see if it is reasonable. The capacitors can heal briefly and then start to short. One should also check the rectifier in operation with an oscilloscope as one diode could intermittently short.

May 04, 2011 | Soundcraft Gigrac 600 Powered Mixer

1 Answer

I need to purchase a fuse for my gigrac 600 amp and can't find one...ceramic, 10 amp 250v


Checkout Tools2Parts:
http://www.tools2parts.com/Bussman-ABC-10BC-p/1031-1710.htm

Apr 07, 2011 | Soundcraft Gigrac 600 Powered Mixer

1 Answer

Please help. Cannot turn the soundcraft gigrac 600 on.


Check the fuse. If it has blown, do NOT replace it without taking for service first. Additional damage often occurs when users replace fuses that have blown due to internal failures in equipment.

Also check that the power cord is fully seated... sometimes they don't quite make it...

Feb 04, 2011 | Soundcraft Gigrac 600 Powered Mixer

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