2 GCX doing the exact same thing

Q & A for building and interfacing your rack gear with Ground Control Pro and GCX-based systems.
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mikhael47@gmail.com
Posts: 24
Joined: Wed Apr 04, 2012 4:35 pm

2 GCX doing the exact same thing

Post by mikhael47@gmail.com »

I have two GCX. The first one takes my "pedal" in from my GCX. From it's Midi out, I have the 2nd's "pedal in" connected. They are both activating the exact same loops when I click a preset. What gives?

mikhael47@gmail.com
Posts: 24
Joined: Wed Apr 04, 2012 4:35 pm

Re: 2 GCX doing the exact same thing

Post by mikhael47@gmail.com »

I have some more info here. My two gcx are quite a bit different. One is quite old, where the other one is newer. Not sure if this makes a difference.

I have a GCP plugged in, and Yes I have enabled GCX 2 in the expanders section. I have setup IA 3 to turn on and off GCX 2 - loop2. I have not saved that loop enabled in a preset.

I have the GCP connected to the "pedal in" of GCX 1. I have the midi out of GCX1 going to the pedal in of GCX2. I have Midi Out on GCX2 going to a TC Electronic Gmajor2.

Everything works perfect this way, but GCX 2 lights up the same loops as GCX1.

If I swap the midi cables, so that GCP is connected to GCX2 and GCX1 now becomes the slave, it behaves differently. It does not light up anything on the new slave but it does pass midi through to the Gmajor2 and the "active" light blinks on it.

If I understand it correctly, when the gcx boots it checks to see if there is a slave, and if there is, it will translate all the midi messages to different values that the slave will act on.

I am really stumped. Perhaps my two gcx are not compatible? Maybe they need to be flashed? I tried different boot sequences, no joy.

Mike

nyteowl
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Joined: Mon Jan 25, 2010 8:53 am

Re: 2 GCX doing the exact same thing

Post by nyteowl »

I'm not 100% sure about this, but it sounds like you may not have configured any GCX2 Loops as being on or off within your presets, so it is echoing the loop status of GCX1.
For Sale: Original DMC GCX in Excellent Condition ($275) and a far more versatile SoundSculpture GL also in Excellent Condition ($1750). Free CONUS Shipping.

mikhael47@gmail.com
Posts: 24
Joined: Wed Apr 04, 2012 4:35 pm

Re: 2 GCX doing the exact same thing

Post by mikhael47@gmail.com »

Thanks Nyteowl, I'll check that out when I get home... it's baffling for sure. One of my friends has almost the exact same setup. He said he just connected his, added GcX 2 in the expanders section and he was rocking and rolling.

JohnClark
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Joined: Tue May 05, 2009 2:33 pm
Location: The Lab

Re: 2 GCX doing the exact same thing

Post by JohnClark »

I suspect the older GCX has the original v1 Firmware installed. When you first power up your GCX units the LEDs scroll from one side to the other.

-Scrolling from Left to Right indicates v1 Firmware.
-Scrolling from Right to Left indicates v2 Firmware.

Only GCX units with v2 Firmware will work correctly in a multi GCX setup. Feel free to give us a call or write to info@voodoolab.com for current pricing and availability on getting any v1 GCX units updated.
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mikhael47@gmail.com
Posts: 24
Joined: Wed Apr 04, 2012 4:35 pm

Re: 2 GCX doing the exact same thing

Post by mikhael47@gmail.com »

yuk, i think they BOTH scroll left to right :( bulk discount perhaps? LOL

I'll check tonight! I was talking to Ben for a bit and he gave me some troubleshooting tips.

Thanks John!

mikhael47@gmail.com
Posts: 24
Joined: Wed Apr 04, 2012 4:35 pm

Re: 2 GCX doing the exact same thing

Post by mikhael47@gmail.com »

I tested it like you said and yes, one of them is the old firmware. I have spoken to ben and will arrange a replacement chip sent. You guys have support that is 2nd to none! I work in a support driven environment and you guys always go above and beyond! Thanks!

Mike

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