adding a sequencer or an envelope filter to a phaser?

Started by daverdave, May 19, 2009, 05:40:53 PM

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daverdave

Yeah, that's a point. I read a post by mark hammer on mods for the ross phaser. One that he suggested was reducing the 10k resistor from the lfo to the stages to 2.2k and that would give a wider sweep, I might try reducing the 10k and 20k resistors at either side of the ldr to see if that helps. There were some other mods for the phaser as well, one was to get more regeneration, I think it was to reduce the 27k resistor in the feedback loop to 22k, I can't find the post though at the moment, I could do with reading it again.

daverdave

Just lowered the resistor values on each side of the ldr, not sure it did much, maybe the sweep is slightly better. On thing I've just realised is the value of the cap I used in the input of the envelope detector. I used a 470n cap, the meatball has a switch for bandwidth here, it uses a 22n, then a 470n and then it's a disconnection to turn off the envelope.
I'm trying to think whether the 470n was for full bandwidth or whether the 22n is.

Also the intensity control seems to be most effective when the pot is set to 0 (with the wiper nearest 1), I'm wondering if increasing the value of the pot would make a difference.