HX Stomp - Stereo Output to FOH and mono output to amp on stage. Can it be done?

[bshilkitus]

Hours and hours of searching but I can't figure this out.  It seems like it would be a common setup.

 

I want to......

 

Run a stereo signal out of my HX Stomp with an amp model to the FOH, and a mono signal to my amp on stage without modeling. 

My signal chain is TUNER - TUMNUS - KING OF TONE - TIMELINE- BIGSKY - HX STOMP. 

 

Currently I have the SEND L/R going to the FOH but its a mono signal, because as soon as I put a amp model in the sidechain (path b) , it sums the stereo signal.  And I need path A for my stage amp without modeling.

 

Any ideas?  

[datacommando]

On 1/5/2025 at 10:51 AM, bshilkitus said:

Hours and hours of searching but I can't figure this out.  It seems like it would be a common setup.

 

I want to......

 

Run a stereo signal out of my HX Stomp with an amp model to the FOH, and a mono signal to my amp on stage without modeling. 

My signal chain is TUNER - TUMNUS - KING OF TONE - TIMELINE- BIGSKY - HX STOMP. 

 

Currently I have the SEND L/R going to the FOH but its a mono signal, because as soon as I put a amp model in the sidechain (path b) , it sums the stereo signal.  And I need path A for my stage amp without modeling.

 

Any ideas?  

Hi,

 

I found this in less than 2 minutes - there is even a preset that can play around with and modify to your own ends.

 

Basically, you need a SEND block, which will be the feed to your amp, before the amp block then - that goes to the final output to the FOH.

 

Hope this helps/makes sense.

[bshilkitus]

Thank you for your response, but I still can't get a stereo image from the main L/R outs.  The amp model sums the two channels into mono.

[datacommando]

On 1/5/2025 at 12:25 PM, bshilkitus said:

Thank you for your response, but I still can't get a stereo image from the main L/R outs.  The amp model sums the two channels into mono.

Hi,

 

Well as an amp model is a mono block that is normal, but you didn’t indicate any other blocks that might be stereo and post amp block.

 

For instance, you listed your signal chain is TUNER - TUMNUS - KING OF TONE - TIMELINE- BIGSKY - HX STOMP.
 

Are you using stereo from the Strymon units to feed the HX Stomp? If you are, then they will already be collapsed to mono as soon as the hit the amp block? It sort of defeats the object. Generally most users would have time based effects after the amp section, in order to take advantage of the stereo effects.

I can understand wanting to use “the real thing” with your pedals, but the HX Stomp has a tuner onboard, along with a stack of  overdrive pedals, including a KOT model, and a whole bunch of stereo delays and reverbs. If you are only using the Stomp for the amp model then you will always end up with a mono output.

 

From what I can derive from your current information is that you say -

“Run a stereo signal out of my HX Stomp with an amp model to the FOH, and a mono signal to my amp on stage without modeling”.  You cannot be running a “stereo” signal out of your Stomp, because as you’re already aware, any stereo signal hitting the front of the amp block is automatically collapsed to mono, therefore your output is dual mono. Also, “Currently I have the SEND L/R going to the FOH but its a mono signal, because as soon as I put a amp model…” Again, as you know, this is due to tapping the signal chain after the amp. It’s physics, you cannot change that.

 

You mention paths A and B it would help by posting a copy of the HX Stomp preset you are using for folks to check out. It may make more sense to be able to see the settings. Sadly, it won’t be me, as I cannot get access to the studio right now - currently under 10 inches of fresh snow. Grrrr!

 

EDIT:

Hmm… I have just re-read the OP. Judging by the info supplied you will never get a stereo result. Anything hitting an amp/cab block will be flattened to mono, plus anything going to your stage amp will become mono once it hits the jack socket in, unless of course you have a stereo amp, which I seriously doubt.

[bshilkitus]

On 1/5/2025 at 8:55 AM, datacommando said:

If you are only using the Stomp for the amp model then you will always end up with a mono output.

 

That is exactly what I am doing.

 

Thank you very much for your thorough and well thought out response!

I guess I will need two HX stomps!  HA!

 

 

 

[Schmalle]

You can use amp models stereo:

• Use two instances of the same model in parallel [set up an amp, copy and paste it and put it on Path B].
• Use the Split block in Y-mode balanced 100% left and right.
• Use the Mixer block paned 100% left and right.

From the manual p40:

Quote

 

Okay, this one’s for the power users: If you move a Split > Y block all the way left, set its BalnceA to “L100” and its BalnceB to “R100,” you can process the L/MONO and RIGHT inputs independently. In addition, if you route the Mixer block to Path B (Send L/R), you can process two instruments simultaneously, each with its own mono input, stereo processing, and stereo outputs!

 

 

[bshilkitus]

Yeah, tried that.  It still summed the stereo to mono.

 

Thanks though!

 

 

[Schmalle]

On 1/5/2025 at 8:34 PM, bshilkitus said:

Yeah, tried that.  It still summed the stereo to mono.

 

Thanks though!

Use Send L for your amp and Out L/R for FOH.

 

The amp on Path A processes the L signal, the amp on Path B the R signal with hard panned split and mixer blocks (see post above):

>---o--[Send L]--[amp]--------o---->
    '-------------------[amp]-'

[bshilkitus]

OK, I thought I tried that but I will give it another shot.....maybe tomorrow.

 

Thank you!!

 

[bshilkitus]

Oh, the amp model on path A sums the L/R to mono.  

[Schmalle]

On 1/5/2025 at 10:15 PM, bshilkitus said:

Oh, the amp model on path A sums the L/R to mono.  

There is something that you don't seem to understand.

 

After the hard left/right balanced Y-Split there is only the L input signal on both channels (L and R) of Path A so the summing of the amp doesn't matter. The hard paned mixer puts that signal on L only and the signal from Path B to R.

 

The lines between the blocks always represent stereo cables. But the signal can effectively be mono if both channels carry the same signal. An amp model sums both input channels, processes it and outputs the same signal on both channels.

[bshilkitus]

I see.

 

I think the problem is that my stereo effects (Timeline and Bigsky) are pre HX Stomp.  Even though they are running into the HX Stomp in stereo, I guessed it is summed right from the beginning?  IDK.  See below

 

On 1/5/2025 at 8:55 AM, datacommando said:

Are you using stereo from the Strymon units to feed the HX Stomp? If you are, then they will already be collapsed to mono as soon as the hit the amp block? It sort of defeats the object. Generally most users would have time based effects after the amp section, in order to take advantage of the stereo effects.

 

And I am.

 

 

[Schmalle]

On 1/5/2025 at 11:43 PM, bshilkitus said:

I think the problem is that my stereo effects (Timeline and Bigsky) are pre HX Stomp.  Even though they are running into the HX Stomp in stereo, I guessed it is summed right from the beginning?

The input signal isn't automatically summed. An empty patch is stereo from input to output. The output gets hardware summed if you only use the left socket.

[bshilkitus]

OK, gonna try it again.  Gonna just use a Flashback delay and go into the L/R Input on the stomp and play with it.  I will post some screen shots.  So thankful for your help!

[bshilkitus]

OK, this works.

 

Getting the stereo delay from my flashback on both L and R outputs. (FOH)

 

Then when I wanna create a send for my stage amp (pre model) like this.........

 

then I lose my stereo signal and it comes out in mono.  FYI, I am using a Ping Pong delay panned hard L/R).

[bshilkitus]

I maintain the stereo field out of the main LRs if I place a "stereo send" before the models instead of a "Send L" to send to my stage amp, but then I only get left channel coming out of my amp because the amp does not have stereo input jack.

 

This is crazy.

[datacommando]

On 1/5/2025 at 10:43 PM, bshilkitus said:

I see.

 

I think the problem is that my stereo effects (Timeline and Bigsky) are pre HX Stomp.  Even though they are running into the HX Stomp in stereo, I guessed it is summed right from the beginning?  IDK.  See below

 

And I am.

Correct!  

The HX Stomp Path A and Path B are stereo. You can feed any stereo effect you like into the front L/R inputs of the HX Stomp and it will travel along Path A and will appear at the L/R out of the Stomp in the identical state, UNLESS you have that stereo input signal pass through a block that is set to mono, eg: an amp block. After that everything is mono UNLESS the signal then passes through a stereo block, eg: a ping pong delay (which can only be stereo). Although, any other effect before the amp will exit the amp in mono and signal will bounce from left to right after the stereo delay block.

 

On 1/5/2025 at 5:08 PM, bshilkitus said:

I guess I will need two HX stomps!  HA!

Ha, ha, ha - yeah double the expense for something that still cannot work how you think it should. It appears that the only reason you are using the HX Stomp is as an amp sim. If that’s the case, this will never work because amps are mono.

Throughout this discourse, you never mentioned what hardware amp you are using? Feeding all your external pedals into your amp must have always been in mono, so now I wonder about this interest in stereo. 
 

Have you tried this: - Guitar > HX Stomp IN > Minotaur > Tone Sovereign > US Princess+Cab > Ping Pong Delay > Dynamic Hall Reverb > HX Stomp Out L/R > Stereo Powered Monitors HX Stomp Phones Out. Result - glorious stereo from a HX Stomp.

[datacommando]

On 1/6/2025 at 12:43 AM, bshilkitus said:

OK, this works.

 

Getting the stereo delay from my flashback on both L and R outputs. (FOH)

 

Then when I wanna create a send for my stage amp (pre model) like this.........

 

OK! Here we go again.

 

Forget the SEND, and instead of connecting path B back to Path A drag it down to create another output that goes out on the SEND sockets. Of course you don’t want 2 amp/cab blocks in this preset. See the HX Stomp 3.8 Owner’s Manual > Page 18 > Setting Path B’s Output for details of this.

https://line6.com/data/6/0a00051afdda673cccdb61c9c/application/pdf/HX Stomp 3.80 Owner's Manual - English .pdf
 

Hope this helps/makes sense.

 

 

[Schmalle]

On 1/6/2025 at 2:38 AM, datacommando said:

OK! Here we go again.

 

Forget the SEND, and instead of connecting path B back to Path A drag it down to create another output that goes out on the SEND sockets. Of course you don’t want 2 amp/cab blocks in this preset. See the HX Stomp 3.8 Owner’s Manual > Page 18 > Setting Path B’s Output for details of this.

https://line6.com/data/6/0a00051afdda673cccdb61c9c/application/pdf/HX Stomp 3.80 Owner's Manual - English .pdf
 

Hope this helps/makes sense.

 

 

It doesn't. You didn't get the goal which is a dry out for the physical amp while processing a stereo signal with stereo amp modeling for FOH.

[Schmalle]

On 1/6/2025 at 2:16 AM, bshilkitus said:

I maintain the stereo field out of the main LRs if I place a "stereo send" before the models instead of a "Send L" to send to my stage amp, but then I only get left channel coming out of my amp because the amp does not have stereo input jack.

 

This is crazy.

1. You didn't do what I proposed which putting the Send L after the Split. With that the signal isn't summed to mono. It's the left channel only though for your amp.

 

2. You never specified what your amp is nor that you wanted the stereo sum for your amp. To do that you need to use the Stereo Send and external summing. There is no way to do that in the Stomp.

[bshilkitus]

On 1/5/2025 at 8:38 PM, datacommando said:

Forget the SEND, and instead of connecting path B back to Path A drag it down to create another output that goes out on the SEND sockets. Of course you don’t want 2 amp/cab blocks in this preset. See the HX Stomp 3.8 Owner’s Manual > Page 18 > Setting Path B’s Output for details of this.

https://line6.com/data/6/0a00051afdda673cccdb61c9c/application/pdf/HX Stomp 3.80 Owner's Manual - English .pdf
 

Hope this helps/makes sense.

 

Yes, tried that.  The main L/R outputs then are in mono.

[datacommando]

On 1/6/2025 at 6:48 AM, Schmalle said:

2. You never specified what your amp is nor that you wanted the stereo sum for your amp. To do that you need to use the Stereo Send and external summing. There is no way to do that in the Stomp.

Hi,

 

This is my point entirely - he has not mentioned what amp he is using, and/or if it has a fx loop (which may or may not help here), because the way I read this is the OP has never heard his gear in stereo. It would appear that all those expensive, stereo fx are slammed into the front of whatever mono amp he happens to be using. 
 

Using the HX Stomp he could put his fancy drive boxes in front of it, and then patch the Timeline and Big Sky in the Stomp’s FX Loop after any Amp/Cab block of choice, then go to stereo out. Although, other than headphones, which he also didn’t mention, it seems there is no apparent method of monitoring, or hearing, this “holy grail” of stereo that he wants to achieve, simply to go to FOH. I really don’t understand what the point of this would be, especially without knowing how it sounds in stereo. 

 

It appears to me to be an exercise in futility, because every time an amp/cab block is added to the end of the signal chain it defeats the object. Right at the start the OP told us -  “I want to...”, BUT never told us WHY? We are chasing our own tails on this one, I think.

 

Right, now I’m back to clearing snow!

[datacommando]

On 1/6/2025 at 12:23 PM, bshilkitus said:

 

Yes, tried that.  The main L/R outputs then are in mono.

Hi, again.

 

I woke up about 3am and nearly screamed out loud - WHY?

 

Every time you have an Amp/Cab block last in the signal path, then the resulting output will be (dual) mono, that’s just the way it works.

 

How the hell are you monitoring this stuff as it appears all you have is a single guitar amp (mono)

[bshilkitus]

Sorry to cause you distress at 3AM!

 

So here is my situation.

 

I play for a large church every Sunday.  They have a stereo sound system.  My rig is as follows:

 

GUITAR - TUNER - KOT - TUMNUS - TIMELINE - BIGSKY - HX STOMP - DUAL SHOWMAN (on stage)

 

I thought it would be nice to send a stereo signal to the board so the sound guy could pan my ambient delays and reverbs (which come from the Strymons) left and right so the congregation could hear the effect.  I now believe the only way to do it is to insert a "stereo send" on the stomp before the path split.  Put an AMP model on paths A and B after the split and send that to the board via the main LR outputs.  Then from the send jack, I would need a TRS cable to an external mono sum adapter, then to my Showman via standard instrument cable.

 

I realize all this could be solved by putting the Strymons after the STOMP or using the stomps effects instead after the models.  But I love the Strymons were they are.

 

So, not worth it.  They can imagine.

 

Thanks for your help.

 

[bshilkitus]

On 1/6/2025 at 9:08 AM, bshilkitus said:

I realize all this could be solved by putting the Strymons after the STOMP or using the stomps effects instead after the models.  But I love the Strymons were they are

Well, actually not.

[Schmalle]

On 1/6/2025 at 3:08 PM, bshilkitus said:

Sorry to cause you distress at 3AM!

 

So here is my situation.

 

I play for a large church every Sunday.  They have a stereo sound system.  My rig is as follows:

 

GUITAR - TUNER - KOT - TUMNUS - TIMELINE - BIGSKY - HX STOMP - DUAL SHOWMAN (on stage)

 

I thought it would be nice to send a stereo signal to the board so the sound guy could pan my ambient delays and reverbs (which come from the Strymons) left and right so the congregation could hear the effect.  I now believe the only way to do it is to insert a "stereo send" on the stomp before the path split.  Put an AMP model on paths A and B after the split and send that to the board via the main LR outputs.  Then from the send jack, I would need a TRS cable to an external mono sum adapter, then to my Showman via standard instrument cable.

 

I realize all this could be solved by putting the Strymons after the STOMP or using the stomps effects instead after the models.  But I love the Strymons were they are.

 

So, not worth it.  They can imagine.

 

Thanks for your help.

 

Right.

 

The minimal sum adapter that works with the Stereo Send (I tested it) is a modified TRS male -> TRS female cable (stereo plug -> stereo socket).

For the mod you need two 4.7 kOhm resistors (1/4 W or more, 10 kOhm should work, too):

plug L -> 4.7kOhm -> socket L

plug R -> 4.7kOhm -> socket L (yes, L!)

plug GND -> socket R + socket GND

 

So you open up the socket, cut both the L and the R lead at the end, solder in the resistors and solder GND to R.

 

That is an easy job for someone who can solder.

 

Hope that helps.

[datacommando]

On 1/6/2025 at 2:08 PM, bshilkitus said:

I thought it would be nice to send a stereo signal to the board so the sound guy could pan my ambient delays and reverbs (which come from the Strymons) left and right so the congregation could hear the effect. 

Hi again,

 

Can I suggest that you go and watch this video and then see if you have a better understanding of how to get to what you’re trying to achieve. You should be able to figure a way to make your gear get a similar result simply by where you position the split and the amp/cab block. This guy does it all with HX Stomp running stereo FX. 

 

 

Note:- there are several other videos on YouTube featuring similar ways of approaching this - for example this guy using mono  effects. 

 

 

Oh, and this guy uses this set up on HX Stomp for his P&W rig.

 

 

Go on - experiment - it may be way better that you expected.
 

Hope this helps/makes sense.

[bshilkitus]

Hmm,

 

 https://www.amazon.com/Hosa-GPP-290-TRS-TS-Adaptor/dp/B000068O4M?gQT=1

[bshilkitus]

On 1/6/2025 at 12:15 PM, datacommando said:

Can I suggest that you go and watch this video and then see if you have a better understanding of how to get to what you’re trying to achieve. You should be able to figure a way to make your gear get a similar result simply by where you position the split and the amp/cab block. This guy does it all with HX Stomp running stereo FX. 

Thanks, I will tonight.