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    FX Loop question

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    trifonius

    Posts : 11
    Join date : 2015-08-28

    Re: FX Loop question

    Post by trifonius on Mon Oct 05, 2015 5:11 am

    Thanks a lot. I'll take it to a tech guy.
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    bordonbert

    Posts : 749
    Join date : 2015-01-28
    Age : 97
    Location : Southern England

    Re: FX Loop question

    Post by bordonbert on Wed Oct 07, 2015 4:34 am

    That's really interesting Jeff. Thanks for posting. At first sight it seems a really simple way of getting round the problem and hats off to the Herren at H&K for coming up with it.

    Ideally, before I would feel comfortable with it as an absolute problem free cure, I would like to see what is before and after that point. You could possibly run into impedance matching problems if it isn't being driven effectively or it feeds back into an awkward impedance. I know I poohpooh "tone suck" but that is only in the light of today's understanding of the problem and correctly designing to prevent it. The designers have given this fix the thumbs up but it has not been a feature they would have anticipated and designed into the original circuit. It's really a well thought out hack and should be treated with a little caution until heavily tested!

    It may pay to make sure the first pedal that new loop sees is a very high impedance, almost all will be of course but some well loved (but let's be honest shagged out) "classic" models may not, also that the final one before the return has a really good drive capability.

    I would keep an ear open for any signs of instability and noise/radio breakthrough too.
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    Raf0419

    Posts : 50
    Join date : 2015-12-25
    Location : Usually bw a rock and a hard place...in NC

    Re: FX Loop question

    Post by Raf0419 on Mon Jan 04, 2016 11:46 am

    "So you use a switching jack here. It taps into the outermost wire on the ribbon shown. Took me about 15 minute to get it to functioning condition. I still need to devise a permanent mount for the jack but it does work. "

    Hi Jeff. I know I'm a little late to the conversation as I've just stumbled across this, but I have a few questions.

    1. How are you using it?
    2. The op was wanting to use a looper sans effects. Does this mod allow you to for example: loop a clean tone and then play over it with a crunch tone or can you simply add effects like chorus trem delay to the tone you are using to playing over the loop while staying in the same channel? Put another way can you loop one channel and play over with another?
    3. Did you install the permanent jack and if so, do you have any images of your install?

    Thanks in advance!
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    VoodooJeff

    Posts : 170
    Join date : 2015-07-17
    Age : 43
    Location : dfw, tx

    Re: FX Loop question

    Post by VoodooJeff on Mon Jan 04, 2016 1:28 pm


    I use the new FX loop exclusively. originally it was to facilitate the growing frequency of solo guitar shows I was getting, but now it`s just the way I use it all the time. No need to swap back and forth. The only downside is that you lose footswitch control over the loop on/off, but that`s so minor it`s hardly worth mentioning. All I did was program my H9 to go into bypass when I`m on a preset that doesn`t use it.

    Yep, either loop allows you to loop one channel and play over it on another. The problem with the original FX loop is that it changes the effects on the looped sample. For instance, I run a short, subtle delay on my clean tones. I make a rhythm to loop, using the built in effects. When I switch to my lead channel, the looped sample is run through the built in effects now with the longer and more pronounced delay I use there. The modded loop fixes that .

    I did not get a permanent mount, but not without reason. I`m going to be running two GM36`s in stereo soon, and I`ll be making a custom panel, almost like a miniature patch bay to simplify and clean up the wiring between the two amps and my Eventide. It would go just above the DI socket, on the little flat panel, center of the chassis, otherwise. There is precious little open real estate inside the amp!
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    Raf0419

    Posts : 50
    Join date : 2015-12-25
    Location : Usually bw a rock and a hard place...in NC

    Re: FX Loop question

    Post by Raf0419 on Mon Jan 04, 2016 6:25 pm

    Thank you!
    A frustration I've had has been the looped rhythm having effects added. So much so I AB'd my GM 36 to an old Line 6, just to get the two tones I wanted. Looks like this would solve it and I can clean up all the extra wiring plus pedals!
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    Raf0419

    Posts : 50
    Join date : 2015-12-25
    Location : Usually bw a rock and a hard place...in NC

    Re: FX Loop question

    Post by Raf0419 on Wed Jan 13, 2016 5:36 pm

    Jeff,

    While I plan to have capable amp tech perform this mod, I'm interested in learning more. Two more questions.

    1. You mention a "switching jack". Does this mean your TRS stereo jack has a manual inline switch in addition to the TRS stereo mount?
    2. Since this is a stereo connection am I correct in assuming you use a TRS stereo to Y cable to make the loop?

    Thank you in advance.
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    VoodooJeff

    Posts : 170
    Join date : 2015-07-17
    Age : 43
    Location : dfw, tx

    Re: FX Loop question

    Post by VoodooJeff on Thu Jan 14, 2016 12:16 am

    Raf0419 wrote:Jeff,

    While I plan to have capable amp tech perform this mod, I'm interested in learning more. Two more questions.

    1. You mention a "switching jack". Does this mean your TRS stereo jack has a manual inline switch in addition to the TRS stereo mount?
    2. Since this is a stereo connection am I correct in assuming you use a TRS stereo to Y cable to make the loop?

    Thank you in advance.

    Man, thanks for asking. I left out a HUGE detail: It`s not a trs jack/y cable setup. A switching jack is really nothing fancier than one that closes the circuit when nothing is plugged into it, effectively bypassing the jack.

    And nope, the "send" will be the 1/4" line out on the back of the amp. (you know, that thing that we never use for anything anyway LOL).
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    Raf0419

    Posts : 50
    Join date : 2015-12-25
    Location : Usually bw a rock and a hard place...in NC

    Re: FX Loop question

    Post by Raf0419 on Thu Jan 14, 2016 11:54 am

    Ah!! That makes sense to me now. Thank you so much for clarifying!
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    Zybler

    Posts : 6
    Join date : 2014-06-20
    Location : Sweden

    Re: FX Loop question

    Post by Zybler on Sun Apr 10, 2016 1:09 pm

    Hi, is there anyone else that has done this mod? Where did you put the new switch jack? I don't like the idea to have it hanging out oft the amp.

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