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 Post subject: All-analog ReVibe
PostPosted: Wed Mar 05, 2014 2:06 pm 
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Joined: Tue Jul 31, 2012 11:33 pm
Posts: 159
My most challenging build yet - tough, but VERY worth it.
Inspired by the Hoffman ReVibe, it's an all-analog reverb/tremolo combo based on classic Fender versions.

Constituent circuits:
Surfy Bear FET Reverb
Cardinal Tremolo
Custom split/mix circuit for parallel operation
Madbean Bloviator (used as switchable output buffer)
Two 1776 relay bypass boards

Other parts:
Hammond 10" x 6" x 2" amp chassis with walnut sides
Accutronics 8AB2A1B reverb tank (spring unit remounted inside hammond chassis)
Custom faceplate designed by me and laser etched by Mojotone

The Rundown:
The Sufy Bear Reverb uses FETs to emulate the famous 6G15 reverb, with a MOSFET pair driving the tank. I've got this running in a parallel configuration with Midayfair's Cardinal Tremolo, which uses FETs and optocouplers to get a sound similar to Fender tremolos. The modulation settings you see on a rotary switch are Black (blackface/bias), Brown (brown face/harmonic) and Vibe (a univibe-ish sound).
Running in parallel sacrifices the extreme settings of both effects, but the overall lushness of parallel operation was just too good to pass up.
For switching, the soft-touch, momentary switches (thanks to Josh's relay boards) make a big difference because you don't want a hard click clanging the springs. The left switch bypasses the whole unit, while the right switch turns the modulation on & off. I used an Opto Fet to make the Modulation indicator light flash in time with the speed of the effect.
The Bloviator (State variable EQ) on the output is independent and switches on the back. It was on during all the demo samples.

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 Post subject: Re: All-analog ReVibe
PostPosted: Wed Mar 05, 2014 2:11 pm 
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Joined: Sat Sep 10, 2011 5:38 pm
Posts: 1915
Location: Maine
OH MY GOD I WANNA PLAY IT

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 Post subject: Re: All-analog ReVibe
PostPosted: Wed Mar 05, 2014 2:41 pm 
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Joined: Sat Nov 17, 2012 12:16 pm
Posts: 160
Location: Reading MA USA
Yikes! That would get the Leo stamp of approval, for sure.

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 Post subject: Re: All-analog ReVibe
PostPosted: Wed Mar 05, 2014 2:41 pm 
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Joined: Sun Oct 12, 2008 5:18 pm
Posts: 3843
Location: Byron Bay, Australia
Holy Smokes!

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 Post subject: Re: All-analog ReVibe
PostPosted: Wed Mar 05, 2014 2:43 pm 
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Joined: Wed Apr 26, 2006 5:14 pm
Posts: 8633
Location: Truckee, CA
Wow - super cool! And nice demo! :D

Spill the beans on the faceplate please - did you take it to an engraver or something?

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 Post subject: Re: All-analog ReVibe
PostPosted: Wed Mar 05, 2014 3:18 pm 
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Joined: Tue Jul 31, 2012 11:33 pm
Posts: 159
Morgan wrote:
Wow - super cool! And nice demo! :D

Spill the beans on the faceplate please - did you take it to an engraver or something?


I made the graphics in photoshop, converted it to a vector graphic in illustrator with distance & hole sizes marked and sent it to Mojotone. They did a reverse etch on some plexi and backfilled with white. It was $53 for the laserage, but worth it. Really top-notch work. I recommend Mojo for anything. They've exceeded my expectations every time I've ever dealt with them.


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 Post subject: Re: All-analog ReVibe
PostPosted: Wed Mar 05, 2014 4:12 pm 
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Joined: Sun Aug 06, 2006 2:12 pm
Posts: 3528
Location: Raleigh NC
Wowzers that is Nice!


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 Post subject: Re: All-analog ReVibe
PostPosted: Wed Mar 05, 2014 4:29 pm 
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Joined: Fri Jun 22, 2012 9:18 pm
Posts: 804
Looks good, sounds good, that pedal even looks like it feels good.
Jubal you have been building up to this and the payoff is phenomenal. Groundbreaking pedal.

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 Post subject: Re: All-analog ReVibe
PostPosted: Wed Mar 05, 2014 6:46 pm 
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Joined: Thu Mar 15, 2012 9:20 pm
Posts: 1707
Epic! Beautiful build and great demo, too.

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 Post subject: Re: All-analog ReVibe
PostPosted: Wed Mar 05, 2014 7:36 pm 
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Joined: Sun Mar 10, 2013 6:06 pm
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Location: noth cackalacky
That is absolutely beautiful in every way!

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 Post subject: Re: All-analog ReVibe
PostPosted: Thu Mar 06, 2014 8:07 am 
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Joined: Tue Nov 23, 2010 8:19 am
Posts: 1350
Location: Cullman, AL
Stunning. Impressive. Intimidating.

At a loss for further adjectives, I decided to explain my reaction to the pics/vid with this simple equation:





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 Post subject: Re: All-analog ReVibe
PostPosted: Thu Mar 06, 2014 3:40 pm 
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Joined: Wed Nov 14, 2012 9:07 pm
Posts: 792
It looks just like it sounds.
What an accomplishment, building something like that.

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 Post subject: Re: All-analog ReVibe
PostPosted: Thu Mar 06, 2014 4:37 pm 
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Joined: Mon Dec 01, 2008 8:39 am
Posts: 1374
Location: Midwest, USA
And the "Pedal of the Month" award for the entire planet Earth goes to the All Analog ReVibe.

Wow.

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 Post subject: Re: All-analog ReVibe
PostPosted: Thu Mar 06, 2014 4:49 pm 
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Joined: Mon Feb 04, 2013 8:28 pm
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Location: Richland, WA.
Scott C wrote:
And the "Pedal of the Month" award for the entire planet Earth goes to the All Analog ReVibe.

Wow.


With a $25 gift certificate to the earth store of your choice. Just let us know the email you use to log in and we'll get that applied for you.



note: offer not good outside of the planet, and cannot be applied to indigenous inhabitants or protected species. Other restrictions may apply, for complete rules and restrictions, please visit http://earf2buy.com/badassbuild/theballs.htm

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 Post subject: Re: All-analog ReVibe
PostPosted: Thu Mar 06, 2014 6:58 pm 
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Joined: Thu Aug 25, 2011 7:24 pm
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Location: Rouyn-Noranda, Qc
Like if the BubbaFET was'nt enough...... :shock:

You've overdone yourself again! Brillant!

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 Post subject: Re: All-analog ReVibe
PostPosted: Thu Mar 06, 2014 7:58 pm 
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Joined: Tue Jul 31, 2012 11:33 pm
Posts: 159
Thanks for the kudos, guys. I've been dreaming this one up for about two years, since I discovered the ReVibe over at EL34World.

Weber has a kit for the all-tube version for $500 and I REALLY thought I should just do that, but it's a full-size amp head and I just thought it'd be great to have this in a portable form factor easy to plug in anywhere. It all really started to take shape last year when SurfyBear posted his reverb and Jon came up with the Cardinal.


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