madbeanpedals::forum

Projects => Build Reports => Topic started by: nzCdog on July 28, 2011, 02:01:52 AM

Title: The Poindexter P90 Killer
Post by: nzCdog on July 28, 2011, 02:01:52 AM
I killed a p90 with this pedal, literally :(  

Shorted the 9V to guitar input by accident when checking some voltages with my meter.  Learn from me, thankfully I have a spare pickup lying around but it was pretty gut-ripping when I found out my mistake.  Unplug the guitar when you are prodding a circuit that has volts in it  :'(


(http://i757.photobucket.com/albums/xx219/nzCdog/airforcemuseumvisit05400.jpg)
(http://i757.photobucket.com/albums/xx219/nzCdog/airforcemuseumvisit060.jpg)

So this is a little different than stock... tweaking things made me very happy with the sound of this pedal.

*Added 470pF cap across lugs 1-3 of gain to reduce a lot of radio interference

*Added a presence control to the output... thats the trimpot in next to the 3PDT... to take a little hair off the top end without changing the sound too much, making it fit in with my normal clean channel sound and my other pedals better.

*Settled on 1N4148 and 1N34A as the diodes... went thru a whole lot including LEDs and other clippers... these two seem to strike a nice combo

*Rather insanely I put a multicolor flashing LED in here too... It has a 220uF Electrolytic in parallel with it to filter any noise... looks cool and suits the chaotic sounds this pedal can make!

*(Edit) Forgot that I changed the value of R25 to 1K.  Drops it down to about 8 Volts... The effect is less gain and more of a 'gated' attack.

Its an addictive pedal, very playable with noth neck and bridge pups, with both my strat and my PRS p90 guitars.  
Title: Re: The Poindexter P90 Killer
Post by: cjkbug on July 28, 2011, 02:18:18 AM
cool build. that's my octave fuzz of choice these days. how is the presence control mod done?










Title: Re: The Poindexter P90 Killer
Post by: bigmufffuzzwizz on July 28, 2011, 02:22:49 AM
Im super into it! I got one of these boards also cause it just seems like its fun to play with. Your graphic is very fitting! Too bad about the pickup... :-\
Title: Re: The Poindexter P90 Killer
Post by: nzCdog on July 28, 2011, 02:35:37 AM
thanks guys. :)

Quote from: cjkbug on July 28, 2011, 02:18:18 AM
cool build. that's my octave fuzz of choice these days. how is the presence control mod done?

Take a parallel feed of the output > Lug 2 of a 10KB trimpot.  Lug 3 connects to a 22n Cap > Ground.
You can see it in the gut shot, the switch is wired Madbean method with the two extra wires going to the perfboard. :)
Title: Re: The Poindexter P90 Killer
Post by: nzCdog on July 28, 2011, 02:41:57 AM
Quote from: bigmufffuzzwizz on July 28, 2011, 02:22:49 AM
Im super into it! I got one of these boards also cause it just seems like its fun to play with. Your graphic is very fitting! Too bad about the pickup... :-\

Thanks man... I actually had a lot of problems with this pedal, not just pickup-killing.   The Graphics bled colour under the lacquer, which didn't happen last time but I went to a different printshop and ended up having an argument with the staff there who charged a bomb for a poor quality job.  >:(

My daughter said to me, "I like how he's glowing Dad."  So the problem = the solution; Poindexter is glowing from drinking his crazy potion!  So I just decided to finish it and be done.  ::)
Title: Re: The Poindexter P90 Killer
Post by: cjkbug on July 28, 2011, 02:43:42 AM
so it's a treble attenuator, I got it. the bleeding graphics don't look bad in the photos.
Title: Re: The Poindexter P90 Killer
Post by: nzCdog on July 28, 2011, 02:48:45 AM
Yea it really works a charm...  and the pedal still sounds like it should. Thanks bro...  :)
Title: Re: The Poindexter P90 Killer
Post by: mgwhit on July 28, 2011, 03:53:02 AM
Did you really cram two 1/4" jacks and a power jack in the top side of a 1590B.  If so, you're my hero.

Pedal looks great, even with the bleeding.  I assumed it was intentional.
Title: Re: The Poindexter P90 Killer
Post by: chip46 on July 28, 2011, 04:21:25 AM
Looks like a 125B to me
Title: Re: The Poindexter P90 Killer
Post by: nzCdog on July 28, 2011, 05:15:23 AM
Quote from: mgwhit on July 28, 2011, 03:53:02 AM
Did you really cram two 1/4" jacks and a power jack in the top side of a 1590B.  If so, you're my hero.

Pedal looks great, even with the bleeding.  I assumed it was intentional.

Thanks bro... yeah its a 1590B but not a hammond, some cheap clone.  The jacks were some cheapos from effectsconnection, I'm sure they're a tad smaller than the switchcrafts... it was tight!
Title: Re: The Poindexter P90 Killer
Post by: chip46 on July 28, 2011, 05:17:48 AM
How tall is it? Looks deep for a 1590
Title: Re: The Poindexter P90 Killer
Post by: nzCdog on July 28, 2011, 10:07:37 AM
32mm, cheers
Title: Re: The Poindexter P90 Killer
Post by: mgwhit on July 28, 2011, 02:45:38 PM
Yeah, Hammond says 27mm for the inside height of a 1590B.  Bummer.  Cool for you, though.  That extra 5mm is a game changer.  I'll bet that on a pedal board that probably takes up almost as little space as a 1590A once you consider that you really have to side mount your jacks on the 1590A.  (Unless maybe you have the world's thinnest 90° angle plugs.)
Title: Re: The Poindexter P90 Killer
Post by: jimmybjj on July 28, 2011, 03:32:04 PM
Great lookig build, inlikethe graphics. If you don't mind me asking where did you get the enclosure?
Title: Re: The Poindexter P90 Killer
Post by: bigmufffuzzwizz on July 28, 2011, 04:09:21 PM
Thanks for the mod suggestion. I'll have to try it on my Octane. I agree I think the graphics look cool with the bleed over. I actually thought you did it on purpose. What are printing on material-wise (waterslides?) that you can get a print shop to do it for you? Everytime I take decal film (waterslide) to a shop or staples they refuse to put it through the printer.
Title: Re: The Poindexter P90 Killer
Post by: gtr2 on July 28, 2011, 05:21:43 PM
The theme is great!  It really turned out nice regardless!

Josh
Title: Re: The Poindexter P90 Killer
Post by: nzCdog on July 28, 2011, 08:42:40 PM
Quote from: mgwhit on July 28, 2011, 02:45:38 PM
Yeah, Hammond says 27mm for the inside height of a 1590B.  Bummer.  Cool for you, though.  That extra 5mm is a game changer.  I'll bet that on a pedal board that probably takes up almost as little space as a 1590A once you consider that you really have to side mount your jacks on the 1590A.  (Unless maybe you have the world's thinnest 90° angle plugs.)
Sorry I didn't measure inside height because I didn't think it was a big deal.  Fyi External height is 30mm not 32mm. My bad, see the link below, thanks.  :)

Quote from: jimmybjj on July 28, 2011, 03:32:04 PM
Great lookig build, inlikethe graphics. If you don't mind me asking where did you get the enclosure?
Hey man thanks, here's the link but its in New Zealand ;)
http://www.jaycar.co.nz/productView.asp?ID=HB5062&keywords=aluminium+enclosure&form=KEYWORD (http://www.jaycar.co.nz/productView.asp?ID=HB5062&keywords=aluminium+enclosure&form=KEYWORD)

Quote from: bigmufffuzzwizz on July 28, 2011, 04:09:21 PM
Thanks for the mod suggestion. I'll have to try it on my Octane. I agree I think the graphics look cool with the bleed over. I actually thought you did it on purpose. What are printing on material-wise (waterslides?) that you can get a print shop to do it for you? Everytime I take decal film (waterslide) to a shop or staples they refuse to put it through the printer.

I bought some Laser Printer sticker paper for this one... they were reluctant and the first place I went to butchered about 3 sheets so I can see why lol.

Quote from: gtr2 on July 28, 2011, 05:21:43 PM
The theme is great!  It really turned out nice regardless!

Josh

THANKS Josh! :)