Fixed LPF...does this exist?

beggar98 · #1 03-16-2009, 09:37 PM

I was playing around with my POG the other night and got some very cool tones with only the dry signal going through the LPF slider set very low. No octave down, no +1, +2 or detuned voices at all. Obviously, this is not a good use of this amazing pedal, but I was wondering if a pedal exists that is just a fixed low-pass filter? It could probably be done in a small MXR-sized enclosure with two knobs, one for the filter and one for output level. Keep in mind, I don't want something that is envelope triggered. Too difficult to get a consistent tone. Hope someone knows something...

bongomania · #2 03-16-2009, 09:40 PM

That's a classic use of the DOD FX25, among other envelope filters. Set the sensitivity to zero and you've got a fixed lowpass!

bigchiefbc · #3 03-16-2009, 09:41 PM

Well, the Moog LPF can be fixed, you can turn the envelope portion off. Granted its expensive and its a big friggin pedal, but it will do what you're looking for

thombo · #4 03-16-2009, 09:45 PM

+1 on the moogerfooger mf-101
good graphic eq's can do the same thing if you pull out all higher frequencies.

beggar98 · #5 03-16-2009, 10:41 PM

The Moog is a bit of overkill. I've tried the FX25, but I'll play with it some more now that I have the Q-tron+ for my filter needs.

Jared Lash · #6 03-16-2009, 10:50 PM

Quote:

Originally Posted by bongomania

That's a classic use of the DOD FX25, among other envelope filters. Set the sensitivity to zero and you've got a fixed lowpass!

The two options I would have suggested have already been named. The DOD FX25 works great just by rolling off the sensitivity. My only problem with it is that I really don't know what the cutoff frequency is. When I had mine, I actually ran it i the loop of a blender to get a mostly lowpassed signal with a bit of dry mixed in.

The Moog is the big daddy. I like it for dub (and some electronica stuff) primarily because I can dial in the exact frequency I want. Plus, if you add an expression pedal to the cutoff it opens up a lot more possibilities.

fightthepower · #7 03-17-2009, 02:13 AM

It's kind of big and expensive, but with the Grinder you can turn the envelope generator off and select from 4 different frequency ranges in lowpass, bandpass, or highpass.

That said, I think the FX25 is a great choice.

dannybuoy · #8 03-17-2009, 02:32 AM

Is the FX25 lowpass or bandpass?

fightthepower · #9 03-17-2009, 04:26 AM

bandpass with a low Q I think, but I think that in a blind listening test most would think it was surely a lowpass filter.

beggar98 · #10 03-17-2009, 10:34 AM

So after playing with FX25 a bit, I can't quite get the tone I'm after.

I had set the slider on the POG to right around where the filter starts to open up. The FX25 is too round with the sensitivity off. I know the Moog would do it, but again that's overkill. If I wanted to use a $300+ pedal for this, I could just use my POG.

I guess what I'm asking is how complicated would this pedal be: two knobs, one for volume (not sure if it would be best before the filter, like in the POG, or after as a master volume. Same either way, right?) and one to set the filter? I guess it would be similar to the Dunlop Q-zone, but a LPF instead of BPF and tailored for bass. I don't think it exists yet, but there would definitely be a market for it. So, who do I get to build it for me? I'm thinking Barge...

kevteop · #11 03-17-2009, 10:35 AM

The current BYOC DOD 440 clone has a "fixed wah" switch, you can turn the envelope follower off and set the static filter frequency with a third knob. Could be a good cheap option.

RCCollins · #12 03-17-2009, 10:54 AM

EBS WahOne (and Stanwah?) LPF mode

grovest · #13 03-17-2009, 11:08 AM

http://www.subdecay.com/pm.htm

beggar98 · #14 03-17-2009, 11:38 AM

Quote:

Originally Posted by kevteop

The current BYOC DOD 440 clone has a "fixed wah" switch, you can turn the envelope follower off and set the static filter frequency with a third knob. Could be a good cheap option.

This looks like a winner. I actually just bought a soldering set-up and was looking at some different pedal kits from GGG, but maybe I'll try this one. Anyone with build experience able to comment on how easy/difficult this build might be for a beginner? Link here.

dannybuoy · #15 03-17-2009, 11:50 AM

Not too difficult, there's not many components. These filters sound great, I've been thinking about putting an expression control on my Tonefactor 442 but don't want to ruin it!

Jazz Ad · #16 03-17-2009, 12:51 PM

Ibanez LF-7

megadan · #17 03-17-2009, 01:35 PM

Quote:

Originally Posted by kevteop

The current BYOC DOD 440 clone has a "fixed wah" switch, you can turn the envelope follower off and set the static filter frequency with a third knob. Could be a good cheap option.

I had a BYOC filter and that is exactly correct.

The frequency shift wasn't perfectly smooth, but since it's a BYOC pedal you could probably tweak it a little to get what you're after.