madbeanpedals::forum

Projects => Build Reports => Topic started by: juansolo on May 10, 2013, 03:34:43 PM

Title: Stage Fright
Post by: juansolo on May 10, 2013, 03:34:43 PM
Stage Fright

Madbean's Stage Fright phaser (based on the Maestro). It was well worth the wait this one. Epic phasage.

(http://juansolo.demon.co.uk/stompage/images/stage-o.jpg)

(http://juansolo.demon.co.uk/stompage/images/stage-i.jpg)
Title: Re: Stage Fright
Post by: micromegas on May 10, 2013, 03:41:19 PM
Awesome inside & outside!
Title: Re: Stage Fright
Post by: juansolo on May 10, 2013, 03:46:39 PM
If I'd thought ahead the wiring would have been invisible, But I put the jacks in the wrong way around to allow it :( Saying that, as it is the board is actually removable really easily, it wouldn't have been had I done it the other way.
Title: Re: Stage Fright
Post by: raulduke on May 10, 2013, 03:48:56 PM
Wow... that is a stunner.

Love the graphics and look on this one John.

In fact... is that one of Coles BD's Turqoise Enclosures?

If so my build is going to look very similar to yours!

Going to start building mine this weekend.

That PCB layout looks so neat and tidy too.
Title: Re: Stage Fright
Post by: pickdropper on May 10, 2013, 03:59:47 PM
Just love the graphics on this one.  Brilliant.
Title: Re: Stage Fright
Post by: juansolo on May 10, 2013, 04:03:50 PM
Quote from: raulduke on May 10, 2013, 03:48:56 PM
Wow... that is a stunner.

Love the graphics and look on this one John.

In fact... is that one of Coles BD's Turqoise Enclosures?

If so my build is going to look very similar to yours!

Going to start building mine this weekend.

That PCB layout looks so neat and tidy too.

It is indeed a ColesBD box. It's actually pearl which you can't really catch with the camera (blue/green). We have quite a stash of his boxes now :) We've had none in for months (hence the gap in posting anything), I think there's 40+ kicking around now :)

I had no idea what to do with this one decal-wise. But I was feeling creative and knocked this and Cleggy's Small Clone design out one evening sort of inspired by the original pedals. Really like the way both of them came out. Even though it's not my usual style.
Title: Re: Stage Fright
Post by: Giantsinbloom on May 10, 2013, 04:17:13 PM
This is a truly awesome build. I absolutely love the graphic choice on this, and the contrast between the chrome and pearl blue is eye popping. Also, the guts are insanely neat.

Just out of curiosity, what is the small black 2PDT board with the additional components? I am seeing that pop up in quite a few projects as of late. Is it meant to eliminate switch pop?
Title: Re: Stage Fright
Post by: micromegas on May 10, 2013, 04:21:56 PM
the small black board is the Opto-Tron Optical Bypass Board from 1776effects (sadly discontinued), but he still keeps the BOM on his page and I think you can order them if you place a batch order
Title: Re: Stage Fright
Post by: Stomptown on May 10, 2013, 04:24:54 PM
Pristine build! I love the vintage look of this one and that blue really stands out...
Title: Re: Stage Fright
Post by: midwayfair on May 10, 2013, 04:42:07 PM
Such a beautiful color.
Title: Re: Stage Fright
Post by: juansolo on May 10, 2013, 04:46:19 PM
Quote from: micromegas on May 10, 2013, 04:21:56 PM
the small black board is the Opto-Tron Optical Bypass Board from 1776effects (sadly discontinued), but he still keeps the BOM on his page and I think you can order them if you place a batch order

I admit that we cleaned him out when we found out he was discontinuing them. He'll probably do a batch run for you though if you want a load. I suspect you'd have to source your own H11F1's though (RS in the UK stock them for very sensible money).

We've got just under 40 left. When we get low we'll certainly be wanting a lot if anyone else is interested in getting some and getting the numbers up for Josh for it to be worthwhile.
Title: Re: Stage Fright
Post by: Diamond on May 10, 2013, 05:13:30 PM
Nice! I have a board on the way right now. Have you compared it, soundwise, to other phasers? I myself like the EHX Small Stone, but sometimes think the clean signal doesn't come through enough. I'm hoping this one will fix that but still has a large sweep.
Title: Re: Stage Fright
Post by: jvg13 on May 10, 2013, 05:24:04 PM
.
Title: Re: Stage Fright
Post by: juansolo on May 10, 2013, 05:49:55 PM
Quote from: Diamond on May 10, 2013, 05:13:30 PM
Nice! I have a board on the way right now. Have you compared it, soundwise, to other phasers? I myself like the EHX Small Stone, but sometimes think the clean signal doesn't come through enough. I'm hoping this one will fix that but still has a large sweep.

Haven't got a Small Stone to compare it to sadly. It's very different to a phase 45/90 though. I really like it. Surprising difference between 5/6 stages also. All very useful.

Quote from: jvg13 on May 10, 2013, 05:24:04 PM
Really cool indeed man; pristine looking & great choice of knobs!

Out of curiosity, any reason you've added the pulsing LED to the board (on the inside)?  I didn't think it added to the sound of the effect so left it & associated pair of resistors off.

Stuck the resistors on during the build, so just stuck a LED in as we've got loads. No reason to really. Never planned to have the blinking LED as the Optotron doesn't support it.

Quote from: jvg13 on May 10, 2013, 05:24:04 PMAlso, how did you find biasing this?  Mine worked the entire sweep of the pot, I got none of the oscillation that Brian referred to... it just altered the tone a bit (made things less trebly in general).

I spent a bit of time trying different quad op amps I've got (and other matched BJT npn/ pnp pairs).

Never thought I'd say this, & contradicting a post I think I made in here, but I was kind of left with the feeling the 74 may not be as good as dual or single op amp versions of the same thing... Oh no I sound a bit like one of those audiophiles  :-[ :-X  ;)

Similar. The trim pot worked all the way round and tweaking it altered the depth of the sweep. I just set it to it's deepest setting. Didn't get noise anywhere (apart from the usual swooshing). Nice and easy to dial in.
Title: Re: Stage Fright
Post by: gtr2 on May 10, 2013, 05:54:36 PM
I had no interest in building one of these until I see this inspiring build!

Must resist, to little time, must resist...

Josh
Title: Re: Stage Fright
Post by: jvg13 on May 10, 2013, 06:00:39 PM
Quote from: juansolo on May 10, 2013, 05:49:55 PM

Stuck the resistors on during the build, so just stuck a LED in as we've got loads. No reason to really. Never planned to have the blinking LED as the Optotron doesn't support it.

That's good to read, wondered if you'd found that the LED somehow subtly affected the LFO in a beneficial fashion
Title: Re: Stage Fright
Post by: marauder on May 10, 2013, 06:07:15 PM
Quote from: jvg13 on May 10, 2013, 06:00:39 PM
That's good to read, wondered if you'd found that the LED somehow subtly affected the LFO in a beneficial fashion

Will find out tomorrow as mine will be finished, and I haven't bothered with the resistors or LED.
I'll get Juan to bring is round to compare.
Title: Re: Stage Fright
Post by: jubal81 on May 10, 2013, 06:56:22 PM
Badass! Love the style.

Still need to box mine up. Great, great phaser.
Title: Re: Stage Fright
Post by: Bret608 on May 10, 2013, 08:36:12 PM
Wow, this is sweet! I was reading about the Keeley phaser yesterday, and it said something about being "the only six-stage OTA-based phaser." Brian just may have beaten them to the punch!

Really beautiful color. Krylon makes something similar called Bahama Breeze if I remember correctly. Earthquaker uses that color on occasion for limited runs.

I had a fairly pristine Bad Stone years back. I stupidly sold it trying to score something high-end (I think Roger Mayer was the fixation at the time). This makes me miss that sound! Would love a demo...
Title: Re: Stage Fright
Post by: jvg13 on May 10, 2013, 09:00:35 PM
.
Title: Re: Stage Fright
Post by: jubal81 on May 10, 2013, 09:05:35 PM
Only six stage? Keely?

I wants me a Moogerfooger - 6 or 12 stage.
Title: Re: Re: Stage Fright
Post by: gingataff on May 11, 2013, 09:42:10 AM
nice take on the original design.

now only if you could straighten up that ceramic cap;D

nah I'm kidding
sweet build.

Sent from my SC-02B using Tapatalk 2
Title: Re: Stage Fright
Post by: Parra on May 11, 2013, 03:04:38 PM
friggin cool, guts and look.
Title: Re: Stage Fright
Post by: hammerheadmusicman on May 11, 2013, 04:34:21 PM
Looking slick! I have 20+ of those blue pearl boxes kicking about too, so our build are all going to look the same! Stunning colour in the light though!

George
Title: Re: Stage Fright
Post by: juansolo on May 11, 2013, 04:47:57 PM
Quote from: jvg13 on May 10, 2013, 09:00:35 PM
Quote from: marauder on May 10, 2013, 06:07:15 PM
Quote from: jvg13 on May 10, 2013, 06:00:39 PM
That's good to read, wondered if you'd found that the LED somehow subtly affected the LFO in a beneficial fashion

Will find out tomorrow as mine will be finished, and I haven't bothered with the resistors or LED.
I'll get Juan to bring is round to compare.


Cheers!  Only if you've the inclination yourself though man, I can't imagine it'll make any difference...  I'd just wanted to be sure I'd not missed a trick  :D. I got a little caught up in the adjustment/subtle differences of this effect, as I've wanted to get hold of one or build one for a couple of years now.

Look forward to seeing your build, esp after seeing Juan's!   :)

His looks very similar ;) (though silver and he's hidden the wires)

LED and resistors not required.
Title: Re: Stage Fright
Post by: madbean on May 11, 2013, 04:48:35 PM
Quote from: jvg13 on May 10, 2013, 06:00:39 PM
Quote from: juansolo on May 10, 2013, 05:49:55 PM

Stuck the resistors on during the build, so just stuck a LED in as we've got loads. No reason to really. Never planned to have the blinking LED as the Optotron doesn't support it.

That's good to read, wondered if you'd found that the LED somehow subtly affected the LFO in a beneficial fashion

You know, I've been 'scoping LFOs this week and I've found that adding an LED to the output on some can affect the waveform a bit. I haven't tried it on the Stage Fright, though. Just an interesting find.
Title: Re: Stage Fright
Post by: juansolo on May 11, 2013, 04:49:49 PM
Oh interesting. They were subtly different, I just put it down to being differently biased. Nothing in it really though.