EQ I found

Uncle Krunkus · Posted: Tue May 09, 2006 5:48 am Post subject: EQ I found

I found this 10 band stereo graphic EQ at the recyclers for $5 today. I was wondering whether it's worth modifying it and installing it as part of my synth. It's originally for a car, so it runs off +12V. If I bypass the 30W amps it could be good for contouring the sound. But where to put it? After the VCF? After the VCA? It's got LEDs on the sliders which chase along with the help of a 4017. Could look really good, but will the sound justify the hassle?
Any suggestions?

elektro80 · Posted: Tue May 09, 2006 5:54 am Post subject:

Oh, it is one of those EQ/stero amp jobs??

I guess the EQ itself is quite messy and the pots are probably noisy. If it works why not use it as a portable amp for your soundlab? Very Happy

Uncle Krunkus · Posted: Tue May 09, 2006 6:12 am Post subject:

Yeah that's the kind.
It's a Voxson.
Portable amp would be nice, but my Soundlab isn't really portable anyway. I 'spose at the least I could pull the faders out and use them for some other project.

mi_dach · Joined: Dec 17, 2005 Posts: 133 Location: Sweden

elektro80 · Posted: Tue May 09, 2006 6:26 am Post subject:

Actually, those faders might be scratchy, but you should test the device first and see what you can make of it. Some of those integrated designs are hard to split - ( in your case into a working EQ and a working amp ).
Keep in mind that you can use the box for powering a plastic tube delay or other silly stuff. Silly stuff is what makes the world go around. Very Happy

Hmm, throw in that Voxson, some MDF, some loudspeakers, springs and wires, some microphones and plastic tubes.. some hinges and stuff.. and you can make yourself a doppler ADSR module for the Soundlab. Hmm.. you would need some opamps and stuff too.

elektro80 · Posted: Tue May 09, 2006 6:29 am Post subject:

elektro80 · Posted: Tue May 09, 2006 6:33 am Post subject:

piedwagtail · Posted: Tue May 09, 2006 7:04 am Post subject:

Eq....power amp.....
the words diy PLATE reverb come into my head for some reason.

or sell at the next one for $6 and take a 20% profit.
Smile

Robert

piedwagtail · Posted: Tue May 09, 2006 7:06 am Post subject:

i read recyclers as a boot sale.....
(clearup the incomprehensible!)

zipzap · Posted: Tue May 09, 2006 8:01 am Post subject:

I´ve got a eq like that. The filters i don´t want to use, but those Faders with the leds will make a great sequencer.

Uncle Krunkus · Posted: Tue May 09, 2006 4:15 pm Post subject:

I'm thinking you're right (or ADSR controls) I've got 10 and they're stereo so I figure they're worth alot more than $5 if I was looking for new! If I find another one I'll have enough for a 16 step sequencer. Very nice!

elektro80 · Posted: Tue May 09, 2006 5:53 pm Post subject:

I know I am repeating myself, but do test those slide pots. If that thing has actually been in a car, then it most probably is full of dust and sand and oily goo. Shocked

Those parts are the ones that die first anyway.

Uncle Krunkus · Posted: Tue May 09, 2006 7:47 pm Post subject:

Don't worry Stein I'll check 'em and I'll clean 'em. But when you have the amount of available funds that I do, you get excited about the little things Smile

toppobrillo · Posted: Tue May 09, 2006 8:00 pm Post subject:

dude i have got alotta slide-pots i have salvaged from things. i wish it was easier to cut a nice 'slot' in a panel.

elektro80 · Posted: Tue May 09, 2006 11:23 pm Post subject:

zipzap · Posted: Wed May 10, 2006 12:01 am Post subject:

Uncle Krunkus · Posted: Wed May 10, 2006 6:00 am Post subject:

What I meant is that I have no available funds. So chances are that your viking raiding party may be slow roasted over hot coals and then covered in satay sauce!! Shocked

I reckon the best way to cut a nice slot is with a dremel rotary tool, or if you don't mind a slightly wider one go for a nibbling tool. If you have more than 2 to do then it's gonna get tedious no matter how you do it.
Yeah, ADSR might be better with larger value sliders. Or go through a vactrol. I'm thinking that a sequencer would be the best way to use them. Especially with the LEDs hooked up as step indicators. It could look really professional.

mosc · Posted: Wed May 10, 2006 6:05 am Post subject:

If you are going to use it as a fixed filter bank, then try it in front of the VCF. I found on my Moog that was the most satisfying place to patch such a device. If there is noise in the filters then the VCF will attenuate some of it.

Most probably it is not going to work very well because it has the band frequencies exponentially spaced (every octave or 1/3 octave) for example.

elektro80 · Posted: Wed May 10, 2006 6:17 am Post subject: