Dual Filter Build Sesh

From circuitbending to homebrew stompboxes & synths, keep the DIY spirit alive!

Moderators: Kent, Joe., analogdigital, infradead, lisa, parasitk, plord, sduck

Post Reply
User avatar
Kwote
Voltage Controlled Crackpot
Posts: 3107
Joined: Fri Oct 26, 2007 3:24 pm
Location: SF Bay Area

Dual Filter Build Sesh

Post by Kwote » Mon Apr 21, 2008 12:23 pm

Self expression is as essential as breathing
kwotemusic.com
my other sites

User avatar
Muff Wiggler
wait, what?
Posts: 7815
Joined: Fri Nov 24, 2006 12:19 pm

Post by Muff Wiggler » Mon Apr 21, 2008 12:38 pm

Awesome! Great post, and nice work 8)

Fun filter as well, no? Great to see the DIY skills working out for you!

User avatar
Kwote
Voltage Controlled Crackpot
Posts: 3107
Joined: Fri Oct 26, 2007 3:24 pm
Location: SF Bay Area

Post by Kwote » Mon Apr 21, 2008 1:19 pm

Muff Wiggler wrote:Awesome! Great post, and nice work 8)

Fun filter as well, no? Great to see the DIY skills working out for you!
yeah man. i just ran droans on it. VCO saw and pulse -> Dual Filter(all the suggested patches in the manual) -> Dual VCA

and a filter train: VCO pulse -> Dual Filter A -> Dual Filter B -> Filthy Filtre(Freq VC'd by LFO) -> Dual VCA

smooth man. love that high resonation. Nice and peaky.
Self expression is as essential as breathing
kwotemusic.com
my other sites

User avatar
consumed
International Filter Conspiracy
Posts: 3697
Joined: Fri May 25, 2007 1:38 pm
Location: nor cal

Post by consumed » Mon Apr 21, 2008 3:19 pm

looks good. i have one to build too.
m trying to decide if im going to mod up the FP or just build in a different format.

hey, if you're tricky, you can ground most/all of your jacks by strap wiring the sleeves with a single piece of wire. i recently built a modded quad vca and did this, and ended up with a bunch of leftover wire for other projects, a cleaner build and less soldering to do. ill post a pic later.

User avatar
Kwote
Voltage Controlled Crackpot
Posts: 3107
Joined: Fri Oct 26, 2007 3:24 pm
Location: SF Bay Area

Post by Kwote » Mon Apr 21, 2008 3:42 pm

consumed wrote:looks good. i have one to build too.
m trying to decide if im going to mod up the FP or just build in a different format.

hey, if you're tricky, you can ground most/all of your jacks by strap wiring the sleeves with a single piece of wire. i recently built a modded quad vca and did this, and ended up with a bunch of leftover wire for other projects, a cleaner build and less soldering to do. ill post a pic later.
what mods are you referring to?

definately post that pic. i'd like to see that.
Self expression is as essential as breathing
kwotemusic.com
my other sites

User avatar
Muff Wiggler
wait, what?
Posts: 7815
Joined: Fri Nov 24, 2006 12:19 pm

Post by Muff Wiggler » Mon Apr 21, 2008 4:05 pm

i think he's saying just make a common ground across all ground connectors, then hook it up to the PCB once, makes for easier and neater wiring

basically imagine a bunch of jacks in a row. If you orient them all the exact same way, and put them just right, you can draw a straight line across the ground lugs of each jack.

So, strip a piece of wire that's just as long as your line. Insert it through all the ground lugs of the jacks-in-a-row. Then solder it in place where it passes through each lug.

Now all you have to do is hookup this 'ground bridge' once to the COM spot on the PCB.

if you have two rows of jacks, you can do this along each row, then connect the two rows with once piece of wire, then just take a single wire to ground the whole array to the PCB.

User avatar
Muff Wiggler
wait, what?
Posts: 7815
Joined: Fri Nov 24, 2006 12:19 pm

Post by Muff Wiggler » Mon Apr 21, 2008 4:06 pm

lots of manufacturers and builders do this, look inside your modules and you'll probably see this once or twice

User avatar
consumed
International Filter Conspiracy
Posts: 3697
Joined: Fri May 25, 2007 1:38 pm
Location: nor cal

Post by consumed » Mon Apr 21, 2008 4:33 pm

Kwote wrote:
consumed wrote:looks good. i have one to build too.
m trying to decide if im going to mod up the FP or just build in a different format.

hey, if you're tricky, you can ground most/all of your jacks by strap wiring the sleeves with a single piece of wire. i recently built a modded quad vca and did this, and ended up with a bunch of leftover wire for other projects, a cleaner build and less soldering to do. ill post a pic later.
what mods are you referring to?

definately post that pic. i'd like to see that.
the mod for the quad vca involved changing it to sweep with a 5v input instead of requiring 10v to fully 'open'.

User avatar
Kwote
Voltage Controlled Crackpot
Posts: 3107
Joined: Fri Oct 26, 2007 3:24 pm
Location: SF Bay Area

Post by Kwote » Mon Apr 21, 2008 5:18 pm

Muff Wiggler wrote:lots of manufacturers and builders do this, look inside your modules and you'll probably see this once or twice
indeed. some of my Blacet modules have that setup.
Self expression is as essential as breathing
kwotemusic.com
my other sites

User avatar
Kwote
Voltage Controlled Crackpot
Posts: 3107
Joined: Fri Oct 26, 2007 3:24 pm
Location: SF Bay Area

Post by Kwote » Mon Apr 21, 2008 5:20 pm

consumed wrote:
Kwote wrote:
consumed wrote:looks good. i have one to build too.
m trying to decide if im going to mod up the FP or just build in a different format.

hey, if you're tricky, you can ground most/all of your jacks by strap wiring the sleeves with a single piece of wire. i recently built a modded quad vca and did this, and ended up with a bunch of leftover wire for other projects, a cleaner build and less soldering to do. ill post a pic later.
what mods are you referring to?

definately post that pic. i'd like to see that.
the mod for the quad vca involved changing it to sweep with a 5v input instead of requiring 10v to fully 'open'.
oh. should've known. i remember you were talking about running one with your motm on modsynth.net before.

and of course Blacet offers the assembled one with that mod.
Self expression is as essential as breathing
kwotemusic.com
my other sites

User avatar
Kwote
Voltage Controlled Crackpot
Posts: 3107
Joined: Fri Oct 26, 2007 3:24 pm
Location: SF Bay Area

Post by Kwote » Tue Apr 22, 2008 1:57 am

Self expression is as essential as breathing
kwotemusic.com
my other sites

User avatar
J.w.M.
Analog Addict
Posts: 426
Joined: Sat Nov 25, 2006 12:03 am
Location: LA

Post by J.w.M. » Tue Apr 22, 2008 2:39 pm

Now that, sir, is a quality drone.

User avatar
Kwote
Voltage Controlled Crackpot
Posts: 3107
Joined: Fri Oct 26, 2007 3:24 pm
Location: SF Bay Area

Post by Kwote » Tue Apr 22, 2008 3:55 pm

J.w.M. wrote:Now that, sir, is a quality drone.
thanks, but i wouldn't classify that a drone at all. way too much going on.
Self expression is as essential as breathing
kwotemusic.com
my other sites

User avatar
consumed
International Filter Conspiracy
Posts: 3697
Joined: Fri May 25, 2007 1:38 pm
Location: nor cal

Post by consumed » Tue Apr 22, 2008 8:54 pm

Image

User avatar
Kwote
Voltage Controlled Crackpot
Posts: 3107
Joined: Fri Oct 26, 2007 3:24 pm
Location: SF Bay Area

Post by Kwote » Tue Apr 22, 2008 9:12 pm

cool. looks like some of my Blacet's. so you strip the wire completely feed it through the commons and then the last in the chain is your go to. right on.

looks like you got a few pieces of wire for that angle though. had to solder the corner i see.

thanks for the flick.
Self expression is as essential as breathing
kwotemusic.com
my other sites

User avatar
consumed
International Filter Conspiracy
Posts: 3697
Joined: Fri May 25, 2007 1:38 pm
Location: nor cal

Post by consumed » Wed Apr 23, 2008 9:12 am

yeah, i guess i didnt mean "one and only one wire".
anyway, it really makes the process a lot easier.

Post Reply

Return to “Music Tech DIY”