Maestro - MPF-1

Steven_M · Post by **Steven_M** » 06 Dec 2010, 04:00

http://www.buildyourownclone.com/paraeq.html

Saw this today and thought this might solve a lot of problems for people wanting parametric eq's and don't really care to wait for a project to become available.

Ugly box layout though.

Visualdistortion · Post by **Visualdistortion** » 09 Apr 2011, 08:51

Found this, can be interesting:

Visualdistortion · Post by **Visualdistortion** » 09 Apr 2011, 08:52

Strangeamps · Post by **Strangeamps** » 14 Sep 2012, 18:39

If anyone is still interested, here's a quick n dirty cleanup of the trace side of the pcb, and a sloppy vero version I threw together. I can verify that I built the vero version and it works, but if anyone sees any errors in it or the pcb artwork please let me know.

Visualdistortion · Post by **Visualdistortion** » 14 Sep 2012, 22:26

OH MY GOD! Thanks a lot!

Strangeamps · Post by **Strangeamps** » 18 Sep 2012, 08:09

You're welcome! Enjoy!

Strangeamps · Post by **Strangeamps** » 21 Sep 2012, 03:34

Quick crappy video demo of the vero version

Sorry for the poor quality and one handed playing, but should be enough to qualify the layout as verified working.

DrNomis · Post by **DrNomis** » 21 Sep 2012, 05:45

Sounds cool, you can really hear the amount of resonance the pedal is capable of......

Strangeamps · Post by **Strangeamps** » 22 Sep 2012, 05:15

DrNomis wrote:Sounds cool, you can really hear the amount of resonance the pedal is capable of......

Totally. Though I see now why there's no broad setting with the fuzz in the original. You really could eliminate the broad setting, 'cause even in clean mode its not real pronounced, and even more so in fuzz mode. Next one I build may just have a toggle or another foot switch to choose between sharp and med. I'm about halfway through a more compact pcb layout for this which I'll post here when its done, as well as notes on using trimpots in a couple spots, cause there are multiple ways to coax more resonance, fuzz, and volume out of this circuit. My ultimate goal is to get it to fit in a wah enclosure.

Strangeamps · Post by **Strangeamps** » 29 Sep 2012, 05:52

aha. i forgot to put and indication that the height pot center lug goes to the very bottom right corner track.

rockain · Post by **rockain** » 23 Oct 2012, 08:52

hello,

i will make some more switchable Q´s like the PDF. What kind of resistor values a need to put in the circuit? I realy don´t understand the Q-section!

Help please?

thanks

Strangeamps · Post by **Strangeamps** » 30 Oct 2012, 21:25

rockain wrote:hello,

i will make some more switchable Q´s like the PDF. What kind of resistor values a need to put in the circuit? I realy don´t understand the Q-section!

Help please?

thanks

Sorry I don't quite understand your English. The resistor values are all listed on the vero layout.

Visualdistortion · Post by **Visualdistortion** » 30 Oct 2012, 23:23

Can you indicate on the veroboard where the different pins of the switch are solder?
Because I don't understand the different position (Pin 1, 2, 3, center etc).

Thanks a lot.

sta.papad · Post by **sta.papad** » 31 Oct 2012, 23:05

Hi, I have a problem with the 2P3T connections too..

I see 6 wires on vero but my switch has 10. Can anybody explain how to do that.?

Dirk_Hendrik · Post by **Dirk_Hendrik** » 05 Nov 2012, 17:57

sta.papad wrote:Hi, I have a problem with the 2P3T connections too.. I see 6 wires on vero but my switch has 10. Can anybody explain how to do that.?

If you post a picture of your switch we might be able to determine how to connect it. A switch with 10 connections in not that common.

sta.papad · Post by **sta.papad** » 05 Nov 2012, 18:25

Hi

thanks for the responding.! I bought it from here.:
http://www.musikding.de/Switches/Rotary ... :3464.html

Dirk_Hendrik · Post by **Dirk_Hendrik** » 05 Nov 2012, 18:31

oh my.... (thanks for the pic)
Is there anyone who can post a schem with the vero layout?
The original is a 2P5T and seemingly someone "improved that"

Or,
Is there any form of identification on that switch? Since musikding does not seem to link to a datasheet.

sta.papad · Post by **sta.papad** » 05 Nov 2012, 18:46

i think that musikding send me a 2p4t instead of the 2p3t

, but i think i can use it as a 2p3t leaving 2 pins out. Even though i can't find a way to use only 6 pins according to vero layout. Can anybody, who built it from vero, help.? Sorry for my bad English.

Strangeamps · Post by **Strangeamps** » 06 Nov 2012, 17:09

I picked up a huge lot of universal 3p12t plastic rotaries for cheap, and they come with a keyed washer that can adjust it from 2 throws to 12, and as a single pole it's up to 12 positions, two poles 6 pos, or 3 poles four positions. Pretty handy. Sorry I haven't gotten around to posting the specifics on wiring the switch, I'll do that today, just need to crack the pedal open. I'll make sure to take a pic of the switch and wiring too.

Strangeamps · Post by **Strangeamps** » 06 Nov 2012, 17:47

Oh, and I totally keep forgetting to mention, you don't really need a 2P3T, a DPDT center-off toggle switch will work too, cheaper and easier to find. I would even suggest eliminating the "broad" setting and just using a DPDT toggle or footswitch.