When I put Boss DM-2 in effects loop, the effect is almost imperceptible. When I put it in front of amp, it works fine. I’ve tried everything, but I can’t get it to work.
Hi Johnny,
Welcome to the forum!
Have you tried changing the effects loop level on the PS-100?
Thank You,
Terry
Do you mean the high/low button? Yes, although the manual says use low for guitar pedals.
Perfect. How do you set the amplifier? Also, do you have a two button footswitch to see if the loop is bypassed?
Thank You,
Terry
I have changed all cables, changed power sources to pedalboard, gave delay isolated power, tried both ground button settings. As soon as U put the pedal in front of the Vibroverb, works like a charm. Put it back in effects loop and I get about 10 seconds of normal delay, then it fades out to al.ost non-existent. The delay is boss DM-2w (waza). I’ve also tried unplugging footswitch, but still no change.
My rig is Custom Vibroverb. When I want clean, I set volume at 3. When I want the SRV sound, I crank it to 7-10 (which is why I purchased PS-100, so I don’t have to go deaf to enjoy the amp)
So, what I’m reading is the delay goes away but you still have the amps signal correct? Have you tried plugging just a cable as a jumper into the effects loop? The issue I’m having is that the signal is still passing through without delay. Either there’s an issue with the delay itself or the effects loop is switching off 10 seconds in to your playing. Do you have another delay or reverb or anything so we can troubleshoot that? If we know it’s not the issue, it’ll be much easier moving forward.
Thank You,
Terry
I go through compressor into distortion and then to amp. The effects loop send goes to chorus pedal, then dimension C, then delay, then reverb pedal, then to effects return. All pedals work fine in the loop except delay. As soon as i put delay in front of amp, it works perfectly. So the loop seems to be working properly. If the pedal was defective, why does it work in front of the amp? All pedals are BOSS.
It sounds like that particular pedal is sensitive to something. Let’s try putting the pedal at the very end of the chain and then the very front. It doesn’t mean you’ll run it like that, we’re just checking.
Thank You,
Terry
One step ahead of you. I removed all loop pedals except delay. Send into pedal and return out. Same problem.
So, it looks like that pedal has had some issues. There’s a good amount of forum posts where someone is having a similar issue and others don’t. I would contact Boss in this situation. Especially since the other pedals don’t have this issue and they are from the same manufacturer. The signal coming out of the guitar is very different than the signal from the effects send. Even after going through a couple other Boss buffers, it’s still not liking that signal.
Thank You,
Terry
Is there no way it can be the PS-100? I really have doubts that it is the pedal.
So, every pedal works with the unit… except the delay. All of them are from the same manufacturer. There is nothing crazy going on in the loop of the PS-100. No wild design, just the two jacks. Everything else is working with the PS-100 except the pedal that other people have been having a similar issue with, but with multiple amplifiers.
The fact that everything else works just fine lets me know the PS-100 is working perfectly.
I hope this helps! Sounds like it’s a cool setup!
Thank You,
Terry
Hi Terry,
Prior to all this, i.e. not using Fryette PS-100, I was using a PSA-120 (500 mA) with a daisy chain. Everything worked fine, even when I was pushing the 500 mA limit. It made sense to start using PSB- 1U for my daisy chain, since it has 2000 mA. That left me a lot of room. Then I hooked up my Fryette PS-100 and the effects loop problem started. I thought it could be power source, so I purchased the newer PSB-120, which again is 2000 mA. Problem persisted. Finally, I thought I would isolate the delay pedal AND use an isolated power, in this case, my old PSA-120. Problem solved. Then I hooked up reverb pedal with another old PSA-120. Still perfect. For the Chorus and Dimension pedals, I popped in batteries to test all 4 pedals in the PS-100 effects loop. Perfect.
Unfortunately, I’m a chemical engineer, and not electrical, so I’m not really able to understand why the daisy chained system, with plenty of power available (2000 mA) somehow disrupts, and/or sucks down the signal in the effects loops to a point where there is simply not enough for the Fryette power station to work with.
I’m super chuffed that the system is now working. Of course I am biased, but I think a Vibroverb with a Fryette PS-100, is as good as its ever going to get. The sound is perfect even with the Vibroverb dimed.
I very much appreciate your help with this, particularly the turnaround speed. Perhaps you can run this past the big boss to see what he has to say.
Thanks again.
Johnny O’Connell, P.Eng.
Hi Johnny,
So first thing I would say is this isn’t an effects loop issue, it’s definitely a pedal issue. The pedal is having an issue with the buffered signal it’s receiving, or with the low impedance of that signal. Since it works in front of the amp, it doesn’t seem to have an issue with a high impedance signal. The reason I had stated you should contact Boss is due to the forum posts I’ve read in researching this issue. Like I said before, it happens to some people with certain amps, yet others don’t have the issue with the same amplifiers.
It may just be a component that Boss purchased from a supplier that had a problem. You don’t recall an entire group of products when it can just be fixed or replaced for the few people that experience the issue. I would contact Boss if it’s past the return/exchange date of the dealer, and go from there.
I’m sorry you’re going through this and I hope you get everything going.
Thank You,
Terry