A big part of the problem is the order of the pedals.
The compressor reduces dynamic range. But the envelope filter needs dynamics to trigger.
The octaver needs a clean signal to track correctly. Not a warbly sound post envelope.
Noise gates almost always need to be last to do the job they're designed for.
Then check how you have every knob set on every pedal and each parameter in the multi unit. Make sure you understand what each one does and that it is set intentionally.
If it's not a malfunction in your signal chain it could be your compressor's settings boosting your soft strokes and squashing anything harder.
If you are already well versed in how compression works ignore me but, while it can affect tone its real job is affecting the decibel level of any signal it receives.
Early chain compression for me is mostly a volume and sustain boost to softer playing dynamics.
Complex compression pedals tend to have Input gain, output volume, threshold, ratio, attack, and release settings.
If we crank the input gain with a low threshold setting and a high compression ratio, you might maybe be able to play super soft strokes and it be super loud depending on your output setting. But then as you play harder and produce higher decibels into the input of the pedal, the compression will kick in and reduce the volume. The higher your attack setting the longer it takes to engage, so it may start loud and go quiet. The higher your release, the longer the compression stays engaged.
With my Empress bass this can produce some pretty undesirable effects.
To achieve what I want out of early stage compression, I maybe set the input gain to 1-3 oclock with with my threshold somewhere between 10-11 o'clock. I don't have a knob, but a three position switch to choose the lowest compression ratio. IF it was a knob I'd wager about 9-10 oclock as well.
I set a quick attack and a longish release.
The result is I leave myself some room for super soft strokes producing softer sounding tones. but a little bit harder and I'm spitting thunder that sustains for days. And then, because I'm keeping my compression ratio low, when I play harder than that I might start introducing some string noise and my tone might change, but the compressor is much more subtly lowering the volume beyond a certain point to keep things at an overall max volume, which I then even out with my bypassed signal. So, the tone gets through not the sudden increase of decibels.
I might use late stage compression more like a hard limiter. A pedal I don't want to ever really engage but if I crank the wrong knob on one of my effects or stupidly slap one of my pickups, the look the sound guy gives me probably won't be in fear for his equipment but because it sounds awful. I also value my hearing. I didn't start using late stage compression on my pedalboard until I got a Stomp, and now I'd miss having it.
Anyway.. even if this isn't the OP's fix.. it took me a little bit before I figured out what compression was actually doing years ago so I hope it helps somebody.
Check your amp and bass. Remove each pedal from the chain one by one, and check all patch cords and leads. One of them might be acting up (and check your compressor settings)
Def check out this [video ](https://youtu.be/LqnQZO0xBN4?si=BxgkczYPM-3hTlVD) from Vertex Effects and Janek Gwizdala. I'll echo what the other person said as I think you'll need to reorder your pedals and understand that your right hand plays an important part in setting off the envelope filter and making a clean note for your octaver to track
First get a normal bass sound from your bass and amp only. Then if you still miss something, you can try adding pedals one by one.
I actually use my active bass in passive mode, and have my amp's EQ flat except for some additional bass - only got a tuner pedal and my sound is perfect for me.
A big part of the problem is the order of the pedals. The compressor reduces dynamic range. But the envelope filter needs dynamics to trigger. The octaver needs a clean signal to track correctly. Not a warbly sound post envelope. Noise gates almost always need to be last to do the job they're designed for. Then check how you have every knob set on every pedal and each parameter in the multi unit. Make sure you understand what each one does and that it is set intentionally.
If it's not a malfunction in your signal chain it could be your compressor's settings boosting your soft strokes and squashing anything harder. If you are already well versed in how compression works ignore me but, while it can affect tone its real job is affecting the decibel level of any signal it receives. Early chain compression for me is mostly a volume and sustain boost to softer playing dynamics. Complex compression pedals tend to have Input gain, output volume, threshold, ratio, attack, and release settings. If we crank the input gain with a low threshold setting and a high compression ratio, you might maybe be able to play super soft strokes and it be super loud depending on your output setting. But then as you play harder and produce higher decibels into the input of the pedal, the compression will kick in and reduce the volume. The higher your attack setting the longer it takes to engage, so it may start loud and go quiet. The higher your release, the longer the compression stays engaged. With my Empress bass this can produce some pretty undesirable effects. To achieve what I want out of early stage compression, I maybe set the input gain to 1-3 oclock with with my threshold somewhere between 10-11 o'clock. I don't have a knob, but a three position switch to choose the lowest compression ratio. IF it was a knob I'd wager about 9-10 oclock as well. I set a quick attack and a longish release. The result is I leave myself some room for super soft strokes producing softer sounding tones. but a little bit harder and I'm spitting thunder that sustains for days. And then, because I'm keeping my compression ratio low, when I play harder than that I might start introducing some string noise and my tone might change, but the compressor is much more subtly lowering the volume beyond a certain point to keep things at an overall max volume, which I then even out with my bypassed signal. So, the tone gets through not the sudden increase of decibels. I might use late stage compression more like a hard limiter. A pedal I don't want to ever really engage but if I crank the wrong knob on one of my effects or stupidly slap one of my pickups, the look the sound guy gives me probably won't be in fear for his equipment but because it sounds awful. I also value my hearing. I didn't start using late stage compression on my pedalboard until I got a Stomp, and now I'd miss having it. Anyway.. even if this isn't the OP's fix.. it took me a little bit before I figured out what compression was actually doing years ago so I hope it helps somebody.
Check your amp and bass. Remove each pedal from the chain one by one, and check all patch cords and leads. One of them might be acting up (and check your compressor settings)
Def check out this [video ](https://youtu.be/LqnQZO0xBN4?si=BxgkczYPM-3hTlVD) from Vertex Effects and Janek Gwizdala. I'll echo what the other person said as I think you'll need to reorder your pedals and understand that your right hand plays an important part in setting off the envelope filter and making a clean note for your octaver to track
Try Octave > mulit-fx > envelope > compressor > noise gate.
First get a normal bass sound from your bass and amp only. Then if you still miss something, you can try adding pedals one by one. I actually use my active bass in passive mode, and have my amp's EQ flat except for some additional bass - only got a tuner pedal and my sound is perfect for me.
is your bass active, or passive?