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How to hook up an LS-2 as a Wet/Dry Blend

Discount Saint

Discount Saint

Bassist for the music in my head
Jan 26, 2007
1,613
1,055
Victoria, BC, Canada
#1
So, I've read multiple threads about the fact that the Boss LS-2 (Line Selector) can be used as a Wet/Dry blend, but I've been having a bit of trouble getting it to work that way.

Currently, I have my bass + tuner pedal running into the "Input" of the LS-2, and the "Output" goes out to my amp. All of my pedals are running on effects loop "A", and effects loop "B" I have left empty.

On the "A+B Mix" setting, this should produce a clean blend, however I'm not entirely sure how to achieve this. My "A" channel volume knob obviously increases the volume given that my entire chain runs through it, however the "B" channel volume, which I had assumed would be my clean channel, doesn't SEEM to be affecting the sound, and when I turn the "A" volume off, there is no sound at all.

Do I need to have something in the "B" channel (like a tuner?) in order to use the "A+B" mix this way?

Any help?
 
#4
It's done like this for wet/dry blend (the blend is being sent into my VT Bass in this photo):
proxy.php?image=http%3A%2F%2Fi279.photobucket.com%2Falbums%2Fkk159%2Funderthing%2Feffects.png
 
#7
Discount Saint said:
full?d=1452714332.png


Here's my board.. I thought about just connecting a patch cable to Loop B, but it seems weird that this would be necessary.
Click to expand...

You don't need a patch cord in B and when you turn the A volume down you should be hearing clean B. I think something is wrong. Your B volume is off in the pic. Are you sure you have the cables routed properly? Send goes to input. Return to output. I don't think you're dumb or anything, just an easy mistake to make.
 
#8
CHILDISHGAMBINO said:
You don't need a patch cord in B and when you turn the A volume down you should be hearing clean B. I think something is wrong. Your B volume is off in the pic. Are you sure you have the cables routed properly? Send goes to input. Return to output. I don't think you're dumb or anything, just an easy mistake to make.
Click to expand...

Hmmm.. I have my bass going to my tuner, and from there into the "Input" on the LS-2, then I have my pedal chain looping from the "Send" and back into the "Return" on Channel A. Then, the "Output" from the LS-2 goes to my amp. Is that wrong?
 
#9
CHILDISHGAMBINO said:
You don't need a patch cord in B and when you turn the A volume down you should be hearing clean B. I think something is wrong. Your B volume is off in the pic. Are you sure you have the cables routed properly? Send goes to input. Return to output. I don't think you're dumb or anything, just an easy mistake to make.
Click to expand...

I did have channel B turned off in that picture, but only because it didn't seem to be doing anything. When I tested channel A off and B on, there was no sound at all.
 
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#10
Discount Saint said:
Hmmm.. I have my bass going to my tuner, and from there into the "Input" on the LS-2, then I have my pedal chain looping from the "Send" and back into the "Return" on Channel A. Then, the "Output" from the LS-2 goes to my amp. Is that wrong?
Click to expand...

Nope that's right. Just worth checking. It's easy to mess stuff like that up. I have done it a few times.
 
#12
CHILDISHGAMBINO said:
Just noticed you're in Victoria. I used to live there. Maybe pop into LMQ and try it out with a sales person and if it's toast get a new one.
Click to expand...
I do, indeed! My bass guy at L&M is ordering in an Empress Compression for me that he's going to give me some pointers on, so maybe I'll get him to check the LS-2 out with me as well.. kinda weird.

I mean, I assume that cranking up the B Channel should either be noticeably louder and/or noticeably change the sound of the output.. and it does neither. And I guess the fact that nothing comes out of B by itself is evidence enough that something ain't working right.
 
#15
The entire chain is in loop A? Maybe there's a polarity inversion/phase mismatch somewhere?

Try using one pedal at a time in the blend to trouble shoot. A pain, I know, but if what I've described is the problem, this will knock it out.
 
#16
I know it's now 2024 but I can see that this thread perhaps hasn't been resolved. Maybe not important for you now as you may have sorted it but just thinking about visits from others.
You have your effects in Loop 'A'.
Then you need to link the send of 'B' to the return of 'B'. This is your Dry that you can balance with your effects loop 'A' and will be output to your Amp.
The input from your Bass will go to the OUTPUT and the two SENDs.
When you select A+B MIX, both of the RETURNs are routed to the OUTPUT and you can balance them at the LEVEL knobs.

I have my own problem which I'll post separately but I'm guessing that in my own configuration, I'll have to but a 2nd LS-2
 
#19
I think that it's not working because there is no 'B RETURN'
The way I see it is that you can mix 'A' and 'B' only if both loops are used. If there is no return to 'B', there is nothing to mix with Loop 'A'.
My LS-2 will arrive hopefully tomorrow and I'll be able to fully rest it for real.
 

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