So I received a SubT last month and I'm also getting the Synth voice "bleed" into the Octave down voice....this is annoying. Does anyone have a SubT with a CLEAN octave voice, or is this a characteristic of the pedal?
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So I received a SubT last month and I'm also getting the Synth voice "bleed" into the Octave down voice....this is annoying. Does anyone have a SubT with a CLEAN octave voice, or is this a characteristic of the pedal?

That was my finding with the deluxe too, only I started with the resonance maxed on 4pole... about crapped my pants.. it is an intense and powerful pedal.So I got the Xerograph Deluxe from the post office this morning. Stared at it for half the day since I didn't have much to do at work.
Finally got to plug my Dingwall Super J in it and the first impression was :
Definitely not an intuitive "plug-and-play" pedal, I found the controls to be very interractive which I never understood why builders use it as a marketing argument.
Kinda turned knobs and switches at random but after a few minutes I was reassured : the sounds are there! Just need to spend a few more hours taming the beast I guess - it's not coming to tomorrow's gig!
The Octave never sounds totally "clean" per se- much like an OC-2, but I don't hear any bleed-over of the synth voices on mine.
Top knobs (synth voices) are off, switches don't matter, Octave voice at noon, Octave "tone" at noon, Clean at noon. Doesn't really matter which settings though, at any point where the synth voices are off, I can still hear them.
So I got the Xerograph Deluxe from the post office this morning. Stared at it for half the day since I didn't have much to do at work.
Finally got to plug my Dingwall Super J in it and the first impression was :
Definitely not an intuitive "plug-and-play" pedal, I found the controls to be very interractive which I never understood why builders use it as a marketing argument.
Kinda turned knobs and switches at random but after a few minutes I was reassured : the sounds are there! Just need to spend a few more hours taming the beast I guess - it's not coming to tomorrow's gig!
My OC-2 is MUCH cleaner sounding than this. It is clearly the synth voices I hear bleeding through, I don't get this kind of noise on my OC-2. I'm talking when you have the Octave up, the filter completely CCW, then just mute the strings. I hear the synth voice.
I guess I keep bringing this up because I've read other people have heard this too. Some members said this was a defect with the very first run, which is why I'm confused as to why I hear it on a month old pedal...
I think you misunderstand the way the pedal works. The expression pedal sweeps the frequency control, which sets the bottom frequency of the envelope's sweep. The envelope still works when you have an expression pedal attached unless you turn the sensitivity control all the way down. If you want a footswitch to change between manual sweeps and envelope sweeps, you will need to make a footswitch that effectively turns the Sensitivity control off.
Sunbeast has it right. The expression jack is not switched, there is no sensing. The onboard Freq knob, expression pedal, and envelope all add together. To "turn off" the expression pedal, simply set the heel down - this is equivalent to not having an expression pedal plugged in. To turn off the envelope follower, set Sensitivity down all the way. Electronically one could add a jack to which you could connect an external footswitch to enable/disable sensitivity, but there isn't any place to actually put this jack as the XD is already maxed out in internal space.
The cool thing about the expression on the Xerograph (and most filter pedals that have expression capabilities) is that it allows you to set the bottom reach of the expression sweep with the Frequency knob on the pedal rather than leaving a chunk of unuseable sub range on your expression sweep that you have to avoid. Then if you use a Moog expression or any other that has a knob to set the top range of the pedal, you can define the whole range of the sweep- very cool!
Right- but "normal" in this case is still filtered, the cutoff frequency is just set at wherever you have the Frequency knob on the pedal (you can think of the expression pedal as just turning up the Frequency knob from wherever you have it set, with the lowest frequency at the bottom of the sweep being set by the knob).ok I'll try slightly increasing the Freq then (it's annoying because the pedal is not at home...)
just to make sure: for me expression pedal "open" = low pass filter, and "closed" = normal
Right- but "normal" in this case is still filtered, the cutoff frequency is just set at wherever you have the Frequency knob on the pedal (you can think of the expression pedal as just turning up the Frequency knob from wherever you have it set, with the lowest frequency at the bottom of the sweep being set by the knob).
When you are using the envelope with the expression pedal you are still setting the start frequency of the sweep, but if you have the Sensitivity set too high then your playing will always be triggering the filter above that starting point, limiting the sweep- to get the widest/deepest sweep I always set the Sensitivity to where the envelope only triggers when I play moderately hard (though if you are a cleaner/lighter player than me or have a compressor you can get away with a higher Sensitivity). Once you find the best Sensitivity setting you can readjust the Frequency knob to get the bottom of the sweep where you want it.
Lebowsky, I'm kind of confused about your terminology so I'm having trouble writing a direct response. It can clarify if we use "heel down" and "toe down" since both directions could be called "down". Your signal is being lowpass filtered whenever the LED on the XD is lit and the filter volume is not at minimum. But if the cutoff frequency is higher than all of the harmonic content of your signal, then I think this is what you're referring to as "normal".
I think maybe the issue you're having is this, correct me if I'm wrong. The "meaningful" part of the expression sweep, in which sound goes from bassy to full-range, occupies only a fraction of the mechanical throw of the expression pedal.
Here's how you tune it. Set the heel down, then use the XD's Freq control to set the "heel frequency" where you want it. Now, to set the toe frequency, normally an attenuator knob as on the Moog expression pedal is used to keep the frequency sweeping way higher than the highest harmonic in your signal. I'm certain the Expressionator can be programmed to do this, hopefully someone more expert on that unit can explain the steps.
Your expression unit may be able to do this since you mention a range knob, but because of the terminology I'm not sure if that knob is limiting the minimum or maximum extent. Some units like the Roland exp. pedals do the former, which won't help as it's equivalent to the XD's onboard Freq knob.
Ah, I think I had your terminology backwards- so it is the top end of the frequency range (treble) that isn't getting much audible action from the sweep? If so then you are correct- the pedal is probably just sweeping through high end that is barely present in your signal (this happens on my Moog expression pedal too if I leave the sweep control at max). So adjusting the Range in your Expressionator should help you reign in the top end of your sweep to an audible range!ok, so if I understand correctly, let's say that I like both my heel down and toe down sounds. I probably should just fiddle with the expression pedal range knob. If I set it to 0, then the setup will always "sound like heel down". So I can probably linearise my sweep by reducing the range? (like I said it's annoying since I can't test live with Talkbass next to me)
yeah, whether the pedal be halfway or completely toe down, the top end sounds exactly the same.