Author Topic: State variable filter preamp?  (Read 3841 times)

garfo

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State variable filter preamp?
« on: August 09, 2013, 03:51:37 AM »
Has anyone one come arround with an Alembic/Wal type of filtering equalization???
« Last Edit: February 13, 2014, 08:04:44 AM by garfo »

Willybomb

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Re: Bass filter/eQ preamp
« Reply #1 on: September 11, 2013, 06:13:57 PM »
Dunno anything about that, but paulinthelab has a vero layout of the Yamaha ne-1 bass preamp pedal that I'm going to build shortly.  Personally I think Brian should do a pcb for it and call it the "Random Stranger"

RobA

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Re: Bass filter/eQ preamp
« Reply #2 on: September 11, 2013, 07:06:57 PM »
Has anyone one come arround with an Alembic/Wal type of filtering equalization???
Are you talking about onboard preamps or an amp preamp?
Affiliations: Music Unfolding (musicunfolding.com), software based effects and Rock•it Frog (rock.it-frog.com), DIY effects (coming soon).

jimilee

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Re: Bass filter/eQ preamp
« Reply #3 on: September 11, 2013, 09:26:04 PM »
Dunno anything about that, but paulinthelab has a vero layout of the Yamaha ne-1 bass preamp pedal that I'm going to build shortly.  Personally I think Brian should do a pcb for it and call it the "Random Stranger"
I'd totally build this just because of the name.
Pedal building is like the opposite of sex.  All the fun stuff happens before you get in the box.

garfo

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Re: Bass filter/eQ preamp
« Reply #4 on: January 25, 2014, 01:15:45 PM »
Has anyone one come arround with an Alembic/Wal type of filtering equalization???
Are you talking about onboard preamps or an amp preamp?
Hi, sorry for the real late reply.It is an onboard filter based bass preamp as seen on Wal and Alembic basses.It consists of a Volume, a Blend, 2x Mid filter sweep plus boost(stacked) 1 for each pickup, and a treble boost.
So, I found a state variable filter project, and my idea would be having two of these where we could add an active blend control and each filter controls one pickup, both would have a master volume.Guys, is it doable?
http://www.musiker-board.de/attachments/f3-musik-instrumente-know-how//f75-e-gitarren-forum//f39-modifikation-technik-gitarrenbau-e-git//241993d1350756654-lemme-state-variable-filter-sounds-aufnahme-kleiner-test-state-variable-filter_diy-layout-neu.gif
« Last Edit: February 13, 2014, 07:53:25 AM by garfo »

thesameage

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Re: State variable filter preamp?
« Reply #5 on: October 21, 2016, 09:28:11 PM »
Has anyone built this?

Torgoslayer

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Re: Bass filter/eQ preamp
« Reply #6 on: October 22, 2016, 12:43:39 AM »
Dunno anything about that, but paulinthelab has a vero layout of the Yamaha ne-1 bass preamp pedal that I'm going to build shortly.  Personally I think Brian should do a pcb for it and call it the "Random Stranger"
Rullywow has a great pcb project for that called the Canned Yam.

thesameage

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Re: State variable filter preamp?
« Reply #7 on: October 22, 2016, 09:05:47 AM »
I saw that. I'm thinking of building one. It has a high pass filter on it... wonder if it's possible to futz with the values to make it a low pass filter.

HamSandwich

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Re: State variable filter preamp?
« Reply #8 on: October 22, 2016, 10:04:54 AM »
I saw that. I'm thinking of building one. It has a high pass filter on it... wonder if it's possible to futz with the values to make it a low pass filter.

If it's basic enough, you can replace the resistors with caps and caps with resistors.