Finished this last night. Got an old Vox V847 for $20. Refinished the bottom in hammertone verde green. Etched a faceplate for it too. External frequency pot. Uses two 2n2925's that Tim hooked it up with; they have gain of about 200. Haven't been able to test it yet, its going to be a long day at work knowing this is waiting for me :D I decided to call it the Waffle; a little play on Whipple and Wah-Ful ::)
(http://i693.photobucket.com/albums/vv299/pnordeen/20120123_233434.jpg)
(http://i693.photobucket.com/albums/vv299/pnordeen/20120123_233453.jpg)
(http://i693.photobucket.com/albums/vv299/pnordeen/20120123_233508.jpg)
Nice, looks awesome. Can't wait to read your impressions and maybe hear your demo ;)
Quote from: jimmybjj on January 24, 2012, 03:43:49 PM
Nice, looks awesome. Can't wait to read your impressions and maybe hear your demo ;)
Thanks Jim, Ill try and get a demo recorded this weekend. I should also say that this uses the C4 = 330n mod. I did this mod on my Wizard spec wah and I really like it over the stock value.
This looks awesome! I can't wait for mine now. I like the hammertone finish, gives it a two tone look with the chrome pedal. Can't wait to hear it as well.
ooo so nice... :o
Josh
Neato!
I've always wanted to get one of those blank wah shells from SB and do it up large with some crazy colour and a little laser etched plate on the front.
It sucks that I don't like using Wah though.
Jacob
That's what I'm talking about! Great, Paul! Awesome paint job! Nicely done! I've seen this finish in John Lyons' (Basic Audio) builds and I was wondering what the heck is this paint! You opened my eyes! ;D So, thanks! Really, everyday I'm learning new things on the forums!
Thanks guys! I am dying at work right now, must go home and play guitar :'( waaaah.
Don't forget to post a demo! ::) ;)
Woop! Or should I say, yok yok!
Awesome build man... love the name too!
Siiiiiiiiiiiick bro! Love the hammertone. I noticed you moved the freq knob outside but left the peak in - just curious if there's any reason to move the peak out as well?
Also, for the external freq knob - did you need a pot with a longer shaft to get through the thicker enclosure, or is a standard pot ok?
Quote from: eldanko on January 24, 2012, 08:18:14 PM
Siiiiiiiiiiiick bro! Love the hammertone. I noticed you moved the freq knob outside but left the peak in - just curious if there's any reason to move the peak out as well?
I asked Brian and he said the frequency was more useful than the peak. Used detent pot and it feels really cool. Standard shaft size works well, I had to chop the top of the shaft to get this knob to far enough down but that is just cosmetic.
Your board must be looking great with all these new additions...
Seriously man, I have moved a few to the floor because there is no room on my boards anymore. I was thinking about selling a few but couldn't find one I didn't like enough to get rid of. Time to build another pedal board... :D
Hmm, I think I might have wired something up wrong here. I am definitely getting wah but it is pretty subtle. I barely notice it is on when engaged. Ill go through and double check everything. Another thing that makes me think it is a little off is that in buffered output mode the volume drops below unity by a fair amount. It is definitely not subtle at the far end of the frequency pot though, sounds like an envelope filter :D
Sounds like something isn't right. It looks like you have those trannies in the right way considering the ECB pinout. Do you have the schematic for the pcb? I checked earlier today and the build doc wasn't up yet.
The build docs went up few hours ago, so double check your components and values. I don't think there were any changes in component numbering from the schematic published a couple of weeks ago. Also, check transistor orientation.
The wah will be more subtle with the freq pot at max, but there should be a huge range over the travel, so if it's subtle at all settings something is amiss.
The only thing I can think of as a potential problem could be the buffer switch. This was a last minute addition and was the only thing that wasn't tested. Maybe the output is getting loaded down since the SPDT switches from the output only, rather than fully bypassing the buffer/non-buffer. But, I don't see why that would be the case. Hmmm. That would be a pretty easy fix, but do check all the other stuff first before we get to that point.
Also, just to be sure: are you positive it's the buffered output that seems lower and not the non-buffered? That could be easy to mix up. The non-buffered output is the right-most pad on SW1 an buffered is the left-most pad.
Thanks guys you know what it was, I swapped the R15 and R14 positions which was giving me a lower buffered output volume; easy fix. I also figured out why it wasn't as extreme as I was expecting. I used the 100n input cap to start. This was letting lots of bass through which made the treble end of the pedal sweep sound less bright. I was testing mostly with fuzz which likes to see large changes in the amount of bass going through the circuit to give a more extreme sounding wah. Changed it to 10n and used the 47k input resistor too; much, much better with fuzz now. Before it was nice but very mellow and bassy. Now I just need to adjust the "bias" on the rack and pinion to get that inflection point where I like it.
Cool, glad it's working Paul.
You're just reinforcing my soap box though... CHECK YOUR PARTS FIRST!
Jacob