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DIYstompboxes.com  |  DIY Stompboxes  |  Building your own stompbox  |  VOX V847 mods? 0 Members and 1 Guest are viewing this topic. « previous next »
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Author Topic: VOX V847 mods?  (Read 3052 times)
Funky_Tomo
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VOX V847 mods?
« on: November 04, 2006, 08:37:22 PM »

What are some good mods for this pedal. I got a good condition VOX V847 my dad got for me other in UK and it sounds alright, still cool, but i want to blow the crowd out of the water with it.

Ive seen some mods for range here http://www.diyguitarist.com/DIYStompboxes/WahFAQ.htm (about half way down the page) and it looks pretty cool, replacing the 0.01uf to a 0.0015 uf or a .22uf for added range. Have any of you tried this??
Thanks guys.
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Funky_Tomo
Guest
Re: VOX V847 mods?
« Reply #1 on: November 04, 2006, 08:47:11 PM »

or a 0.0022uf*
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jonathan perez
Posts: 2827


Jonathan E. Perez-Sacramento CA


Re: VOX V847 mods?
« Reply #2 on: November 04, 2006, 08:53:02 PM »

.015, and .022 for more lows/less highs. big fat almost bass like sound.

not .22 or .0015
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no longer the battle of midway...(i left that band)...

i hate signatures with gear lists/crap for sale....

i am a wah pervert...ask away...
boogietube
Posts: 635


Sean Harris Ottawa, Canada


Re: VOX V847 mods?
« Reply #3 on: November 04, 2006, 09:10:44 PM »

.022 is great ! I just did it today to a friend's 847. I also added an led , true bypass,vocal mod, midrange mod, and a power jack.
Here's a page you should check out:
http://homepage.ntlworld.com/s.castledine/greenfuz/wah.html
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Pedals Built- Morley ABC Box, Fultone A/B Box, DIY Stompboxes True Bypass box, GGG Drop in Wah, AMZ Mosfet Boost, ROG Flipster, ROG Tonemender, Tonepad Big Muff Pi.
On the bench:  Rebote 2.5,  Dr Boogie, TS808
Gila_Crisis
Posts: 428



WWW
Re: VOX V847 mods?
« Reply #4 on: November 05, 2006, 02:54:10 AM »

i modded my vox wah too!
so replaced the 68k with a 47k (more volume), true bypass, the stock 500k with a 470k (little more bass), the 1k5 with a 2k2 (for mids, but i tried a 4k7 as well and was cool too Tongue), the 33k with a 100k pot and putted in a 5 rotary switch for the sweep with .01 .022 .033 .047 .068 uF condensators
pics here: www.putfile.com/gila_crisis
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Funky_Tomo
Guest
Re: VOX V847 mods?
« Reply #5 on: November 05, 2006, 04:11:00 AM »

Awesome. I just put in the bypass mod, sounds great and i removed the top rubber stoppers, way easier to get in and out of my wahage. I had to get rid of them because i couldnt get the hieght of the last switch with the one i got. Does the mids mod make it sound better? Cause mods wahs have bass and treb but sh*t all mids.
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boogietube
Posts: 635


Sean Harris Ottawa, Canada


Re: VOX V847 mods?
« Reply #6 on: November 05, 2006, 07:47:27 AM »

The mid mod is great . You could use 2 or 2.2k as I remember. I used 2.2k. It helped in the mids and smoothed out the transition between low and high.
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Pedals Built- Morley ABC Box, Fultone A/B Box, DIY Stompboxes True Bypass box, GGG Drop in Wah, AMZ Mosfet Boost, ROG Flipster, ROG Tonemender, Tonepad Big Muff Pi.
On the bench:  Rebote 2.5,  Dr Boogie, TS808
B Tremblay
Posts: 1539

runoffgroove.com


WWW
Re: VOX V847 mods?
« Reply #7 on: November 05, 2006, 10:19:47 AM »

http://home-wrecker.com/wahmods.html
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B Tremblay
runoffgroove.com
petemoore
Posts: 18699


As Yet Unrated


Re: VOX V847 mods?
« Reply #8 on: November 05, 2006, 10:43:45 AM »

  good mileage wrought out when socketting the transistors.
  IIRC that first MPSA18 was..a nuisance
  If course when talking about modded transistors, we're ACerainly talking about 'this' transistor with 'Those' mods -subtexts...}where to start?
  Who knows, transistor gain change and a BC transistor changed the sound.
  This V847's got the other mods on it too...Y Fasel...tuned caps.
  Took time to figure/chain/test/refigure/mod/chain/test.
  You may have a wacky match of sweep range to pot taper..been so long since I've studied that schem...there's a small cap...which when made bigger tames the highs...messing about with the circuits frequency range while turning the wah pot with your fingers [loosen the rack gear] you may be able to find a portion of the pot where the taper matches the [modable] circuit response.
  The pot taper can also be altered using testclipped wires and resistor[s,
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Convention creates following, following creates convention.
JHS
Posts: 345


Re: VOX V847 mods?
« Reply #9 on: November 05, 2006, 04:35:11 PM »

It's one of the best sounding wahs around, a switch and a mod for choosing between McCoy and 847 mode is really cool, also converting it to Colorsound Wah specs.  I would make a clone of the board and mod the cloneboard and leave the original board intact.

JHS


« Last Edit: November 05, 2006, 04:42:00 PM by JHS » Logged
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