Author Topic: ELANTRIC - Roland US-20 "Magic Box Mod"- I/O External FX Loop, and Remote S1/S2  (Read 6446 times)

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Offline Rhcole

I used to own a US-20, sold it and rebought recently for the combo of the VG and the GR. It's about to go off to Elantric for mods.

When I owned it before, it precisely switched between the Axon and the Gr-33 I had at the time. One, the other, or both. No surprises. I used a Godin LGXT back then.

Now, whatever guitar sound is selected for the A pedal plays through whether I'm using the VG or the GR. So, if I have, say, a strat on the VG A voice and B is a COSM synth, and then the GR is a nylon string with a synth, the strat plays on all selections unless I switch the VG A voice off, either with a switch or volume pedal. This assumes that the VG is the box powering the US-20. If the GR is the lead dog, it Uses both COSM and mags as the sound that plays constantly.

I don't think the US-20 is broken, I think the Carvin may be wired differently than the Godin. Or is it something else? I suppose I never thought about the LGXT one way or the other back then, because it was the only guitar variable. I downloaded the US-20 manual, which most certainly is written in "Engrish" and didn't clarify matters for me.
I don't geddit...
« Last Edit: March 23, 2016, 05:45:27 PM by Elantric »

Offline Elantric

Read this thread for details of this standard US-20 behavior

http://www.vguitarforums.com/smf/index.php?topic=3494.msg23360#msg23360


Quote
Has anyone experimented with sending their normal guitar pickup signal out to any processing or gear BEFORE running it into the GR55 and let the 55 output be a final buffer stage to the amp rig???


Many options to achieve External FX processing for GR-55  ( like adding an FX Loop) is listed on this thread

GR-55 F.A.Q.
http://www.vguitarforums.com/smf/index.php?topic=4006.0

If you prefer to leave your GR-55 stock  - you can insert any FX between your normal guitar out and the 1/4" input on GK-3

This can prove unwieldily for live use


I do these Mods to your Roland US-20 A/B/Y Selector ( this goes between your Guitar the GR-55 )


for $80 includes return shipping within the Continental US
Direct Guitar Out/in and External FX Mod for Roland US-20 - place up stream in front of the stock GR-55 /VG-99 13 pin Input
send me a PM (Elantric) for a shipping address
http://www.vguitarforums.com/smf/index.php?topic=3664.0








Gundy Keller (of Roland Germany) likes his
(me on the left, Gundy on the right)






http://www.rolandmusik.de/termine/aktuelles/gitarre/index.php
« Last Edit: January 31, 2015, 10:18:27 AM by Elantric »

Offline Rhcole

Thanks, Elantric.

US-20 went to UPS today, it'll reach you on Tuesday, so they say.
« Last Edit: June 05, 2014, 02:05:25 PM by Elantric »

Offline Rhcole

BTW,

Elantric's US-20 Mod is a great solution for quickly expanding the controls of your VG or GR unit. It's saved me from having to buy outboard MIDI controllers.
« Last Edit: June 05, 2014, 02:05:15 PM by Elantric »

Offline Elantric

Thanks for the positive feedback!
More details on the US-20 Mods are here:
http://www.vguitarforums.com/smf/index.php?topic=2940.msg20799#msg20799
« Last Edit: June 05, 2014, 02:05:04 PM by Elantric »

Offline Bill Ruppert

I just received the "Magic Box" US-20  from Steve Conrad. (aka "Elantric")
It allows you to plug any 1/4 cable into the GR-55 as well as add a foot switch to change GK button functions.
It works like a dream.
Steve modifies the Roland US-20 to add these features and his work is flawless.
Steve is the owner of this forum.
I will up load pics and info this week.
Bill Ruppert
« Last Edit: June 05, 2014, 02:04:53 PM by Elantric »

Offline Elantric

Bill,
Thanks for the endorsement!
« Last Edit: June 05, 2014, 02:07:00 PM by Elantric »

Offline cedric

Wow! Can you help me to reach him... adress??

That seems a nice box for me!

Thank you very much!

Cédric ;-)
« Last Edit: June 05, 2014, 02:04:24 PM by Elantric »

Offline gumbo

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Wow! Can you help me to reach him... adress??

That seems a nice box for me!

Thank you very much!

Cédric ;-)

Send a PM to Elantric, and he'll no doubt explain things to you..

Cheers!
« Last Edit: June 05, 2014, 02:04:07 PM by Elantric »
Read slower!!!   ....I'm typing as fast as I can...

Offline Elantric

Cedric,
Your Inbox is full, so I can not send you details

Also you are in Canada, and at this time I only perform the US-20 mod to USA residents due to shipping/customs issues  -although that may change.
« Last Edit: June 05, 2014, 02:03:48 PM by Elantric »

Offline cedric

Ok. My inbox is ready now... Well,  don't see why it's a problem to send to canada... I bought many from the USA...

Customs is never a problem...

« Last Edit: June 05, 2014, 02:03:36 PM by Elantric »

Offline Elantric

Check your Inbox

« Last Edit: June 05, 2014, 02:03:25 PM by Elantric »

Offline JXWILL

Guys, what address should I use to send my us-20 for modifications?
Thanks, James



Bill,
Thanks for the endorsement.

I do these Mods to your Roland US-20 for $80 includes return shipping within the Continental US
(Image removed from quote.)


Gundy likes his
(Image removed from quote.)

(Image removed from quote.)

http://www.rolandmusik.de/termine/aktuelles/gitarre/index.php
« Last Edit: June 05, 2014, 02:03:07 PM by Elantric »

Offline gumtown

Guys, what address should I use to send my us-20 for modifications?
Thanks, James
You need to send a P.M. to Elantric
Click on his name below to send a message.
« Last Edit: June 05, 2014, 02:02:46 PM by Elantric »
Free "GR-55 FloorBoard" editor software from http://sourceforge.net/projects/grfloorboard/

Offline Elantric

JXWill

Check your Inbox
« Last Edit: June 05, 2014, 02:02:33 PM by Elantric »

Offline damienmcgauley

Anyone in the UK supply modified US-20s?
« Last Edit: June 05, 2014, 02:02:18 PM by Elantric »

Offline celestmark

I'm still waiting on a reply if the GK-Expander is still available, but if its too long a wait I'll look at the US-20 mod option.

If I decide to go with Elantric's work, could I simply PayPal you (Elantric) the entire amount to purchase a US-20, get it  modded and then have it shipped to me? That would save some time and money.

Thanks!
« Last Edit: June 05, 2014, 02:02:06 PM by Elantric »

Offline mojo thorne

With this mod, is it safe to assume that the normal guitar input / FX loop is buffered?  I.e. - could I plug a non-GK guitar straight in to use the GR-55 amp and effects models without any signal loss?
« Last Edit: June 05, 2014, 02:01:50 PM by Elantric »

Offline Elantric

Quote
With this mod, is it safe to assume that the normal guitar input / FX loop is buffered?  I.e. - could I plug a non-GK guitar straight in to use the GR-55 amp and effects models without any signal loss?

No - you must use a separate Buffer between your passive guitar and the "Guitar input" on the modified US-20 - for example any Boss pedal will function as the required buffer.


Quote
If I decide to go with Elantric's work, could I simply PayPal you (Elantric) the entire amount to purchase a US-20, get it  modded and then have it shipped to me? That would save some time and money.

My Free Time is very sparse as well. Currently only doing mods on user owned US-20 that the user sends to me for the mod.
« Last Edit: June 05, 2014, 02:01:38 PM by Elantric »

Offline mojo thorne

Thanks for the quick reply!  I'll start checking for US-20's.  Seems like they can be had for around $100-120 pretty easily.  I'll send you a PM if that's the route that I decide to go.

« Last Edit: June 05, 2014, 02:01:24 PM by Elantric »

Offline KeldAmpworks (bassetrox)

Hi - Just a quick note to the lady or gent who wanted a US-20 mod in the UK - I'm happy to do this, I run an amp repair shop part time - I'll post a link to the website through which you can contact me - if the mods don't mind?

Elantric, hope I'm not stepping on any toes here, but I'm not likely to be offering this to anyone in North America! Feel free to object! :)

Is the US-20 case steel or Ali?

I'd really like to put something together for DIYers to make a breakout box with filters and 6 string insert loop, similar to billbax's great offerings (but without the cool videos). I need this for my own live rig, but I haven't got round to drawing a schematic. I'll start a new thread and share everything if/when I finally do.
« Last Edit: June 05, 2014, 02:00:59 PM by Elantric »

Offline admsustainiac

Bassetrox,

I actually think this is a great idea, as I always wanted to have a community with "open source" hardware.
I have seen the cost of many desirable electronic hardware adapters get doubled when the global shipping costs and import tariffs get tallying up,   

If you read all the posts here (as I have) - we have already have a wealth of info, and a smart electronics tech/engineer can interpret and implement a local solution.


« Last Edit: June 05, 2014, 02:00:47 PM by Elantric »

Offline gregjon

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Can you send this to me in Guam, USA zipcode 96921 ?

You could send it USPS Priority. Just fill out a simple customs form.

Thanks

Gregjon
« Last Edit: June 05, 2014, 02:00:35 PM by Elantric »
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Offline Elantric

The hurdle is I'm selling a mod to your existing device - not a whole product.

It's best you contact others who sell similar type products as I only do this mod on  a customer supplied Roland US-20. I have none to sell.

Others are listed here

http://www.vguitarforums.com/smf/index.php?board=127.0

http://www.vguitarforums.com/smf/index.php?topic=9143.0

http://www.vguitarforums.com/smf/index.php?topic=9692.0

http://www.vguitarforums.com/smf/index.php?topic=9165.0
« Last Edit: June 05, 2014, 02:00:23 PM by Elantric »

Offline Rhcole

Hey Elantric,

Didn't PM because I thought this would be of interest to the group. Will your modded US-20 provide an FX loop for the COSM sounds on the GP-10? I would like to add a Slow Gear, it's a shame Roland left that out.
« Last Edit: July 14, 2014, 12:33:48 PM by Elantric »

 

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